                         SEQUENCE LISTING

<110>  Igenica Biotherapeutics, Inc.
 
<120>  NOVEL ANTIBODY-DRUG CONJUGATES AND RELATED COMPOUNDS, 
       COMPOSITIONS, AND METHODS OF USE

<130>  13390-031-228

<140>  To be assigned
<141>  2015-10-19

<150>  US 62/066,357
<151>  2014-10-20

<150>  US 62/069,826
<151>  2014-10-28

<150>  US 62/106,211
<151>  2015-01-21

<160>  26    

<170>  PatentIn version 3.5

<210>  1
<211>  120
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  heavy chain variable region sequence of an exemplary 
       anti-HER2 antibody trastuzumab 

<400>  1

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Asn Ile Lys Asp Thr 
            20                  25                  30          


Tyr Ile His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Ala Arg Ile Tyr Pro Thr Asn Gly Tyr Thr Arg Tyr Ala Asp Ser Val 
    50                  55                  60                  


Lys Gly Arg Phe Thr Ile Ser Ala Asp Thr Ser Lys Asn Thr Ala Tyr 
65                  70                  75                  80  


Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Arg Trp Gly Gly Asp Gly Phe Tyr Ala Met Asp Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser 
        115                 120 


<210>  2
<211>  107
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  light chain variable region sequence of an exemplary 
        anti-HER2 antibody trastuzumab

<400>  2

Asp Ile Gln Met Thr Gln Ser Pro Ser Ser Leu Ser Ala Ser Val Gly 
1               5                   10                  15      


Asp Arg Val Thr Ile Thr Cys Arg Ala Ser Gln Asp Val Asn Thr Ala 
            20                  25                  30          


Val Ala Trp Tyr Gln Gln Lys Pro Gly Lys Ala Pro Lys Leu Leu Ile 
        35                  40                  45              


Tyr Ser Ala Ser Phe Leu Tyr Ser Gly Val Pro Ser Arg Phe Ser Gly 
    50                  55                  60                  


Ser Arg Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser Ser Leu Gln Pro 
65                  70                  75                  80  


Glu Asp Phe Ala Thr Tyr Tyr Cys Gln Gln His Tyr Thr Thr Pro Pro 
                85                  90                  95      


Thr Phe Gly Gln Gly Thr Lys Val Glu Ile Lys 
            100                 105         


<210>  3
<211>  135
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  heavy chain variable region sequence of an exemplary 
       anti-CD98 antibody designated as IGN523

<400>  3

Met Glu Trp Ser Trp Val Phe Leu Phe Phe Leu Ser Val Thr Thr Gly 
1               5                   10                  15      


Val His Ser Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys 
            20                  25                  30          


Pro Gly Ser Ser Val Lys Val Ser Cys Lys Ala Ser Gly Asn Ala Phe 
        35                  40                  45              


Thr Asn Tyr Leu Ile Glu Trp Val Arg Gln Ala Pro Gly Gln Gly Leu 
    50                  55                  60                  


Glu Trp Met Gly Val Ile Asn Pro Gly Ser Gly Ile Thr Asn Tyr Asn 
65                  70                  75                  80  


Glu Lys Phe Lys Gly Lys Ala Thr Ile Thr Ala Asp Lys Ser Thr Ser 
                85                  90                  95      


Thr Ala Tyr Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val 
            100                 105                 110         


Tyr Tyr Cys Ser Gly Ser Ala Asn Trp Phe Ala Tyr Trp Gly Gln Gly 
        115                 120                 125             


Thr Leu Val Thr Val Ser Ser 
    130                 135 


<210>  4
<211>  133
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  light chain variable region sequence of an exemplary 
       anti-CD98 antibody designated as IGN523

<400>  4

Met Ser Val Pro Thr Gln Val Leu Gly Leu Leu Leu Leu Trp Leu Thr 
1               5                   10                  15      


Asp Ala Arg Cys Asp Ile Val Met Thr Gln Ser Pro Asp Ser Leu Ala 
            20                  25                  30          


Val Ser Leu Gly Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser 
        35                  40                  45              


Leu Leu Tyr Ser Ser Asn Gln Lys Asn Tyr Leu Ala Trp Tyr Gln Gln 
    50                  55                  60                  


Lys Pro Gly Gln Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg 
65                  70                  75                  80  


Asp Ser Gly Val Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp 
                85                  90                  95      


Phe Thr Leu Thr Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr 
            100                 105                 110         


Tyr Cys Gln Arg Tyr Tyr Gly Tyr Pro Trp Thr Phe Gly Gly Gly Thr 
        115                 120                 125             


Lys Val Glu Ile Lys 
    130             


<210>  5
<211>  121
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  heavy chain variable region sequence of an exemplary 
       anti-C16orf54 antibody designated as IGN786

<400>  5

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Asp 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Ala Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Val Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser 
        115                 120     


<210>  6
<211>  112
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  light chain variable region sequence of an exemplary 
       anti-C16orf54 antibody designated as IGN786

<400>  6

Asp Ile Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Val Thr Leu Asn Cys Lys Ser Ser Gln Asn Leu Leu Tyr Ser 
            20                  25                  30          


Thr Asn Gln Lys Asn Tyr Leu Ala Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Val Gln Ala Glu Asp Leu Ala Val Tyr Tyr Cys Gln Gln 
                85                  90                  95      


Tyr Tyr Ser Tyr Arg Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 
            100                 105                 110         


<210>  7
<211>  445
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the IGN523 wild-type heavy chain

<400>  7

Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ser 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Asn Ala Phe Thr Asn Tyr 
            20                  25                  30          


Leu Ile Glu Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 
        35                  40                  45              


Gly Val Ile Asn Pro Gly Ser Gly Ile Thr Asn Tyr Asn Glu Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Ile Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Gly Ser Ala Asn Trp Phe Ala Tyr Trp Gly Gln Gly Thr Leu Val 
            100                 105                 110         


Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu Ala 
        115                 120                 125             


Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys Leu 
    130                 135                 140                 


Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser Gly 
145                 150                 155                 160 


Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser Ser 
                165                 170                 175     


Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser Leu 
            180                 185                 190         


Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys Pro Ser Asn Thr 
        195                 200                 205             


Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp Lys Thr His Thr 
    210                 215                 220                 


Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly Pro Ser Val Phe 
225                 230                 235                 240 


Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro 
                245                 250                 255     


Glu Val Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu Val 
            260                 265                 270         


Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr 
        275                 280                 285             


Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val Ser Val 
    290                 295                 300                 


Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys 
305                 310                 315                 320 


Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys Thr Ile Ser 
                325                 330                 335     


Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro 
            340                 345                 350         


Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val 
        355                 360                 365             


Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly 
    370                 375                 380                 


Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser Asp 
385                 390                 395                 400 


Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg Trp 
                405                 410                 415     


Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu His 
            420                 425                 430         


Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445 


<210>  8
<211>  445
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN523 single C226A heavy 
       chain mutant 

<400>  8

Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ser 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Asn Ala Phe Thr Asn Tyr 
            20                  25                  30          


Leu Ile Glu Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 
        35                  40                  45              


Gly Val Ile Asn Pro Gly Ser Gly Ile Thr Asn Tyr Asn Glu Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Ile Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Gly Ser Ala Asn Trp Phe Ala Tyr Trp Gly Gln Gly Thr Leu Val 
            100                 105                 110         


Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu Ala 
        115                 120                 125             


Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys Leu 
    130                 135                 140                 


Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser Gly 
145                 150                 155                 160 


Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser Ser 
                165                 170                 175     


Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser Leu 
            180                 185                 190         


Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys Pro Ser Asn Thr 
        195                 200                 205             


Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp Lys Thr His Thr 
    210                 215                 220                 


Ala Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly Pro Ser Val Phe 
225                 230                 235                 240 


Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro 
                245                 250                 255     


Glu Val Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu Val 
            260                 265                 270         


Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr 
        275                 280                 285             


Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val Ser Val 
    290                 295                 300                 


Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys 
305                 310                 315                 320 


Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys Thr Ile Ser 
                325                 330                 335     


Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro 
            340                 345                 350         


Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val 
        355                 360                 365             


Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly 
    370                 375                 380                 


Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser Asp 
385                 390                 395                 400 


Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg Trp 
                405                 410                 415     


Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu His 
            420                 425                 430         


Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445 


<210>  9
<211>  445
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN523 single C229A heavy 
       chain mutant 

<400>  9

Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ser 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Asn Ala Phe Thr Asn Tyr 
            20                  25                  30          


Leu Ile Glu Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 
        35                  40                  45              


Gly Val Ile Asn Pro Gly Ser Gly Ile Thr Asn Tyr Asn Glu Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Ile Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Gly Ser Ala Asn Trp Phe Ala Tyr Trp Gly Gln Gly Thr Leu Val 
            100                 105                 110         


Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu Ala 
        115                 120                 125             


Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys Leu 
    130                 135                 140                 


Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser Gly 
145                 150                 155                 160 


Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser Ser 
                165                 170                 175     


Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser Leu 
            180                 185                 190         


Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys Pro Ser Asn Thr 
        195                 200                 205             


Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp Lys Thr His Thr 
    210                 215                 220                 


Cys Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly Pro Ser Val Phe 
225                 230                 235                 240 


Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro 
                245                 250                 255     


Glu Val Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu Val 
            260                 265                 270         


Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr 
        275                 280                 285             


Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val Ser Val 
    290                 295                 300                 


Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys 
305                 310                 315                 320 


Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys Thr Ile Ser 
                325                 330                 335     


Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro 
            340                 345                 350         


Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val 
        355                 360                 365             


Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly 
    370                 375                 380                 


Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser Asp 
385                 390                 395                 400 


Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg Trp 
                405                 410                 415     


Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu His 
            420                 425                 430         


Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445 


<210>  10
<211>  445
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN523 double C226A-C229A 
       heavy chain mutant

<400>  10

Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ser 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Asn Ala Phe Thr Asn Tyr 
            20                  25                  30          


Leu Ile Glu Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 
        35                  40                  45              


Gly Val Ile Asn Pro Gly Ser Gly Ile Thr Asn Tyr Asn Glu Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Ile Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Gly Ser Ala Asn Trp Phe Ala Tyr Trp Gly Gln Gly Thr Leu Val 
            100                 105                 110         


Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val Phe Pro Leu Ala 
        115                 120                 125             


Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys Leu 
    130                 135                 140                 


Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser Gly 
145                 150                 155                 160 


Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser Ser 
                165                 170                 175     


Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser Ser Ser Leu 
            180                 185                 190         


Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys Pro Ser Asn Thr 
        195                 200                 205             


Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp Lys Thr His Thr 
    210                 215                 220                 


Ala Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly Pro Ser Val Phe 
225                 230                 235                 240 


Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr Pro 
                245                 250                 255     


Glu Val Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu Val 
            260                 265                 270         


Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys Thr 
        275                 280                 285             


Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val Ser Val 
    290                 295                 300                 


Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys Cys 
305                 310                 315                 320 


Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys Thr Ile Ser 
                325                 330                 335     


Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro 
            340                 345                 350         


Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val 
        355                 360                 365             


Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn Gly 
    370                 375                 380                 


Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser Asp 
385                 390                 395                 400 


Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg Trp 
                405                 410                 415     


Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu His 
            420                 425                 430         


Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445 


<210>  11
<211>  240
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence of the IGN523 wild-type light chain

<400>  11

Met Ser Val Pro Thr Gln Val Leu Gly Leu Leu Leu Leu Trp Leu Thr 
1               5                   10                  15      


Asp Ala Arg Cys Asp Ile Val Met Thr Gln Ser Pro Asp Ser Leu Ala 
            20                  25                  30          


Val Ser Leu Gly Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser 
        35                  40                  45              


Leu Leu Tyr Ser Ser Asn Gln Lys Asn Tyr Leu Ala Trp Tyr Gln Gln 
    50                  55                  60                  


Lys Pro Gly Gln Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg 
65                  70                  75                  80  


Asp Ser Gly Val Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp 
                85                  90                  95      


Phe Thr Leu Thr Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr 
            100                 105                 110         


Tyr Cys Gln Arg Tyr Tyr Gly Tyr Pro Trp Thr Phe Gly Gly Gly Thr 
        115                 120                 125             


Lys Val Glu Ile Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe 
    130                 135                 140                 


Pro Pro Ser Asp Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys 
145                 150                 155                 160 


Leu Leu Asn Asn Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val 
                165                 170                 175     


Asp Asn Ala Leu Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln 
            180                 185                 190         


Asp Ser Lys Asp Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser 
        195                 200                 205             


Lys Ala Asp Tyr Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His 
    210                 215                 220                 


Gln Gly Leu Ser Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
225                 230                 235                 240 


<210>  12
<211>  449
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence of the trastuzumab wild-type heavy chain 

<400>  12

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Asn Ile Lys Asp Thr 
            20                  25                  30          


Tyr Ile His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Ala Arg Ile Tyr Pro Thr Asn Gly Tyr Thr Arg Tyr Ala Asp Ser Val 
    50                  55                  60                  


Lys Gly Arg Phe Thr Ile Ser Ala Asp Thr Ser Lys Asn Thr Ala Tyr 
65                  70                  75                  80  


Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Arg Trp Gly Gly Asp Gly Phe Tyr Ala Met Asp Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  13
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the trastuzumab single C226A 
       heavy chain mutant 

<400>  13

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Asn Ile Lys Asp Thr 
            20                  25                  30          


Tyr Ile His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Ala Arg Ile Tyr Pro Thr Asn Gly Tyr Thr Arg Tyr Ala Asp Ser Val 
    50                  55                  60                  


Lys Gly Arg Phe Thr Ile Ser Ala Asp Thr Ser Lys Asn Thr Ala Tyr 
65                  70                  75                  80  


Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Arg Trp Gly Gly Asp Gly Phe Tyr Ala Met Asp Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  14
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the trastuzumab single C229A 
       heavy chain mutant 

<400>  14

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Asn Ile Lys Asp Thr 
            20                  25                  30          


Tyr Ile His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Ala Arg Ile Tyr Pro Thr Asn Gly Tyr Thr Arg Tyr Ala Asp Ser Val 
    50                  55                  60                  


Lys Gly Arg Phe Thr Ile Ser Ala Asp Thr Ser Lys Asn Thr Ala Tyr 
65                  70                  75                  80  


Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Arg Trp Gly Gly Asp Gly Phe Tyr Ala Met Asp Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  15
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the trastuzumab double C226A C229A 
       heavy chain mutant 

<400>  15

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Asn Ile Lys Asp Thr 
            20                  25                  30          


Tyr Ile His Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Ala Arg Ile Tyr Pro Thr Asn Gly Tyr Thr Arg Tyr Ala Asp Ser Val 
    50                  55                  60                  


Lys Gly Arg Phe Thr Ile Ser Ala Asp Thr Ser Lys Asn Thr Ala Tyr 
65                  70                  75                  80  


Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ser Arg Trp Gly Gly Asp Gly Phe Tyr Ala Met Asp Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  16
<211>  107
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the trastuzumab wild-type light 
       chain

<400>  16

Asp Ile Gln Met Thr Gln Ser Pro Ser Ser Leu Ser Ala Ser Val Gly 
1               5                   10                  15      


Asp Arg Val Thr Ile Thr Cys Arg Ala Ser Gln Asp Val Asn Thr Ala 
            20                  25                  30          


Val Ala Trp Tyr Gln Gln Lys Pro Gly Lys Ala Pro Lys Leu Leu Ile 
        35                  40                  45              


Tyr Ser Ala Ser Phe Leu Tyr Ser Gly Val Pro Ser Arg Phe Ser Gly 
    50                  55                  60                  


Ser Arg Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser Ser Leu Gln Pro 
65                  70                  75                  80  


Glu Asp Phe Ala Thr Tyr Tyr Cys Gln Gln His Tyr Thr Thr Pro Pro 
                85                  90                  95      


Thr Phe Gly Gln Gly Thr Lys Val Glu Ile Lys 
            100                 105         


<210>  17
<211>  449
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the IGN786 wild-type heavy chain

<400>  17

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Asp 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Ala Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Val Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  18
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786 single C226A heavy 
       chain mutant 

<400>  18

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Asp 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Ala Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Val Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  19
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786 single C229A heavy 
       chain mutant 

<400>  19

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Asp 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Ala Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Val Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  20
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786 double C226A-C229A 
       heavy chain mutant 

<400>  20

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Asp 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Ala Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Val Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  21
<211>  112
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the IGN786 wild-type light chain

<400>  21

Asp Ile Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Val Thr Leu Asn Cys Lys Ser Ser Gln Asn Leu Leu Tyr Ser 
            20                  25                  30          


Thr Asn Gln Lys Asn Tyr Leu Ala Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Val Gln Ala Glu Asp Leu Ala Val Tyr Tyr Cys Gln Gln 
                85                  90                  95      


Tyr Tyr Ser Tyr Arg Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 
            100                 105                 110         


<210>  22
<211>  449
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the IGN786-B wild-type heavy chain 

<400>  22

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Gln 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Thr Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Ala Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  23
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786-B single C226A heavy 
       chain mutant 

<400>  23

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Gln 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Thr Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Ala Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Cys Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  24
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786-B single C229A heavy
       chain mutant 

<400>  24

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Gln 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Thr Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Ala Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  25
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acid sequence for the IGN786-B double C226A-C229A 
       heavy chain mutant 

<400>  25

Gln Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro Ser Gln 
1               5                   10                  15      


Thr Leu Ser Leu Thr Cys Thr Val Ser Gly Tyr Ser Ile Thr Ser Asp 
            20                  25                  30          


Tyr Ala Trp Asn Trp Ile Arg Gln Pro Pro Gly Lys Gly Leu Glu Trp 
        35                  40                  45              


Met Gly Tyr Ile Ser Tyr Ser Gly Ser Ile Arg Tyr Asn Pro Ser Leu 
    50                  55                  60                  


Lys Ser Arg Ile Thr Ile Ser Arg Asp Thr Ser Lys Asn Gln Phe Ser 
65                  70                  75                  80  


Leu Lys Leu Ser Ser Val Thr Ala Ala Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Glu Lys Tyr Asp Asn Tyr Tyr Tyr Ala Met Asp Tyr Trp Gly 
            100                 105                 110         


Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser 
        115                 120                 125             


Val Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala 
    130                 135                 140                 


Ala Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val 
145                 150                 155                 160 


Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala 
                165                 170                 175     


Val Leu Gln Ser Ser Gly Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Arg Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Ala Pro Pro Ala Pro Ala Pro Glu Leu Leu Gly Gly 
225                 230                 235                 240 


Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 
                245                 250                 255     


Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 
            260                 265                 270         


Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 
        275                 280                 285             


Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 
    290                 295                 300                 


Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 
305                 310                 315                 320 


Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 
                325                 330                 335     


Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr 
            340                 345                 350         


Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu 
        355                 360                 365             


Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 
    370                 375                 380                 


Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 
385                 390                 395                 400 


Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 
                405                 410                 415     


Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His 
            420                 425                 430         


Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 
        435                 440                 445             


Gly 
    


<210>  26
<211>  112
<212>  PRT
<213>  Homo sapiens

<220>
<223>  amino acid sequence for the IGN786-B wild-type light chain

<400>  26

Asp Ile Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Val Thr Leu Asn Cys Lys Ser Ser Gln Asn Leu Leu Tyr Ser 
            20                  25                  30          


Thr Asn Gln Lys Asn Tyr Leu Ala Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Val Gln Ala Glu Asp Leu Ala Val Tyr Tyr Cys Gln Gln 
                85                  90                  95      


Tyr Tyr Ser Tyr Arg Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 
            100                 105                 110         


