                         SEQUENCE LISTING

<110>  BRISTOL-MYERS SQUIBB COMPANY
 
<120>  METHOD OF MAKING PROTEIN

<130>  3338.205PC02

<150>  US 63/066,127
<151>  2020-08-14

<150>  US 63/199,547
<151>  2021-01-07

<160>  9     

<170>  PatentIn version 3.5

<210>  1
<211>  124
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  CTLA4 Extracellular Domain

<400>  1

Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly Ile 
1               5                   10                  15      


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


Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val Cys 
        35                  40                  45              


Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp Ser 
    50                  55                  60                  


Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile Gln 
65                  70                  75                  80  


Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu Leu 
                85                  90                  95      


Met Tyr Pro Pro Pro Tyr Tyr Leu Gly Ile Gly Asn Gly Thr Gln Ile 
            100                 105                 110         


Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp 
        115                 120                 


<210>  2
<211>  383
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  CTLA4A29YL104E-Ig amino acid sequence

<400>  2

Met Gly Val Leu Leu Thr Gln Arg Thr Leu Leu Ser Leu Val Leu Ala 
1               5                   10                  15      


Leu Leu Phe Pro Ser Met Ala Ser Met Ala Met His Val Ala Gln Pro 
            20                  25                  30          


Ala Val Val Leu Ala Ser Ser Arg Gly Ile Ala Ser Phe Val Cys Glu 
        35                  40                  45              


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


Gln Ala Asp Ser Gln Val Thr Glu Val Cys Ala Ala Thr Tyr Met Met 
65                  70                  75                  80  


Gly Asn Glu Leu Thr Phe Leu Asp Asp Ser Ile Cys Thr Gly Thr Ser 
                85                  90                  95      


Ser Gly Asn Gln Val Asn Leu Thr Ile Gln Gly Leu Arg Ala Met Asp 
            100                 105                 110         


Thr Gly Leu Tyr Ile Cys Lys Val Glu Leu Met Tyr Pro Pro Pro Tyr 
        115                 120                 125             


Tyr Glu Gly Ile Gly Asn Gly Thr Gln Ile Tyr Val Ile Asp Pro Glu 
    130                 135                 140                 


Pro Cys Pro Asp Ser Asp Gln Glu Pro Lys Ser Ser Asp Lys Thr His 
145                 150                 155                 160 


Thr Ser Pro Pro Ser Pro Ala Pro Glu Leu Leu Gly Gly Ser Ser Val 
                165                 170                 175     


Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr 
            180                 185                 190         


Pro Glu Val Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu 
        195                 200                 205             


Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys 
    210                 215                 220                 


Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val Ser 
225                 230                 235                 240 


Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu Tyr Lys 
                245                 250                 255     


Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys Thr Ile 
            260                 265                 270         


Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro 
        275                 280                 285             


Pro Ser Arg Asp Glu Leu Thr Lys Asn Gln Val Ser Leu Thr Cys Leu 
    290                 295                 300                 


Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn 
305                 310                 315                 320 


Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser 
                325                 330                 335     


Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg 
            340                 345                 350         


Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu Ala Leu 
        355                 360                 365             


His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly Lys 
    370                 375                 380             


<210>  3
<211>  359
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 25-383 of SEQ ID NO: 2

<400>  3

Met Ala Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg 
1               5                   10                  15      


Gly Ile Ala Ser Phe Val Cys Glu Tyr Ala Ser Pro Gly Lys Tyr Thr 
            20                  25                  30          


Glu Val Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu 
        35                  40                  45              


Val Cys Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp 
    50                  55                  60                  


Asp Ser Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr 
65                  70                  75                  80  


Ile Gln Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val 
                85                  90                  95      


Glu Leu Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr 
            100                 105                 110         


Gln Ile Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu 
        115                 120                 125             


Pro Lys Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro 
    130                 135                 140                 


Glu Leu Leu Gly Gly Ser Ser Val Phe Leu Phe Pro Pro Lys Pro Lys 
145                 150                 155                 160 


Asp Thr Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val 
                165                 170                 175     


Asp Val Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp 
            180                 185                 190         


Gly Val Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr 
        195                 200                 205             


Asn Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp 
    210                 215                 220                 


Trp Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu 
225                 230                 235                 240 


Pro Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg 
                245                 250                 255     


Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys 
            260                 265                 270         


Asn Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp 
        275                 280                 285             


Ile Ala Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys 
    290                 295                 300                 


Thr Thr Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser 
305                 310                 315                 320 


Lys Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser 
                325                 330                 335     


Cys Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser 
            340                 345                 350         


Leu Ser Leu Ser Pro Gly Lys 
        355                 


<210>  4
<211>  358
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 26-383 of SEQ ID NO: 2

<400>  4

Ala Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly 
1               5                   10                  15      


Ile Ala Ser Phe Val Cys Glu Tyr Ala Ser Pro Gly Lys Tyr Thr Glu 
            20                  25                  30          


Val Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val 
        35                  40                  45              


Cys Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp 
    50                  55                  60                  


Ser Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile 
65                  70                  75                  80  


Gln Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu 
                85                  90                  95      


Leu Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr Gln 
            100                 105                 110         


Ile Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu Pro 
        115                 120                 125             


Lys Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro Glu 
    130                 135                 140                 


Leu Leu Gly Gly Ser Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp 
145                 150                 155                 160 


Thr Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp 
                165                 170                 175     


Val Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly 
            180                 185                 190         


Val Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn 
        195                 200                 205             


Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp 
    210                 215                 220                 


Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro 
225                 230                 235                 240 


Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu 
                245                 250                 255     


Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys Asn 
            260                 265                 270         


Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile 
        275                 280                 285             


Ala Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr 
    290                 295                 300                 


Thr Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys 
305                 310                 315                 320 


Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys 
                325                 330                 335     


Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu 
            340                 345                 350         


Ser Leu Ser Pro Gly Lys 
        355             


<210>  5
<211>  357
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 27-383 of SEQ ID NO: 2

<400>  5

Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly Ile 
1               5                   10                  15      


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


Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val Cys 
        35                  40                  45              


Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp Ser 
    50                  55                  60                  


Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile Gln 
65                  70                  75                  80  


Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu Leu 
                85                  90                  95      


Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr Gln Ile 
            100                 105                 110         


Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu Pro Lys 
        115                 120                 125             


Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro Glu Leu 
    130                 135                 140                 


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


Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val 
                165                 170                 175     


Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val 
            180                 185                 190         


Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser 
        195                 200                 205             


Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu 
    210                 215                 220                 


Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala 
225                 230                 235                 240 


Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro 
                245                 250                 255     


Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys Asn Gln 
            260                 265                 270         


Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala 
        275                 280                 285             


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


Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu 
305                 310                 315                 320 


Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser 
                325                 330                 335     


Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser 
            340                 345                 350         


Leu Ser Pro Gly Lys 
        355         


<210>  6
<211>  358
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 25-382 of SEQ ID NO: 2

<400>  6

Met Ala Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg 
1               5                   10                  15      


Gly Ile Ala Ser Phe Val Cys Glu Tyr Ala Ser Pro Gly Lys Tyr Thr 
            20                  25                  30          


Glu Val Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu 
        35                  40                  45              


Val Cys Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp 
    50                  55                  60                  


Asp Ser Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr 
65                  70                  75                  80  


Ile Gln Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val 
                85                  90                  95      


Glu Leu Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr 
            100                 105                 110         


Gln Ile Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu 
        115                 120                 125             


Pro Lys Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro 
    130                 135                 140                 


Glu Leu Leu Gly Gly Ser Ser Val Phe Leu Phe Pro Pro Lys Pro Lys 
145                 150                 155                 160 


Asp Thr Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val 
                165                 170                 175     


Asp Val Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp 
            180                 185                 190         


Gly Val Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr 
        195                 200                 205             


Asn Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp 
    210                 215                 220                 


Trp Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu 
225                 230                 235                 240 


Pro Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg 
                245                 250                 255     


Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys 
            260                 265                 270         


Asn Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp 
        275                 280                 285             


Ile Ala Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys 
    290                 295                 300                 


Thr Thr Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser 
305                 310                 315                 320 


Lys Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser 
                325                 330                 335     


Cys Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser 
            340                 345                 350         


Leu Ser Leu Ser Pro Gly 
        355             


<210>  7
<211>  357
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 26-382 of SEQ ID NO: 2

<400>  7

Ala Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly 
1               5                   10                  15      


Ile Ala Ser Phe Val Cys Glu Tyr Ala Ser Pro Gly Lys Tyr Thr Glu 
            20                  25                  30          


Val Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val 
        35                  40                  45              


Cys Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp 
    50                  55                  60                  


Ser Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile 
65                  70                  75                  80  


Gln Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu 
                85                  90                  95      


Leu Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr Gln 
            100                 105                 110         


Ile Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu Pro 
        115                 120                 125             


Lys Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro Glu 
    130                 135                 140                 


Leu Leu Gly Gly Ser Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp 
145                 150                 155                 160 


Thr Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp 
                165                 170                 175     


Val Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly 
            180                 185                 190         


Val Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn 
        195                 200                 205             


Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp 
    210                 215                 220                 


Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro 
225                 230                 235                 240 


Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu 
                245                 250                 255     


Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys Asn 
            260                 265                 270         


Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile 
        275                 280                 285             


Ala Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr 
    290                 295                 300                 


Thr Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys 
305                 310                 315                 320 


Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys 
                325                 330                 335     


Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu 
            340                 345                 350         


Ser Leu Ser Pro Gly 
        355         


<210>  8
<211>  356
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  amino acids 27-382 of SEQ ID NO: 2

<400>  8

Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly Ile 
1               5                   10                  15      


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


Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val Cys 
        35                  40                  45              


Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp Ser 
    50                  55                  60                  


Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile Gln 
65                  70                  75                  80  


Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu Leu 
                85                  90                  95      


Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr Gln Ile 
            100                 105                 110         


Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp Gln Glu Pro Lys 
        115                 120                 125             


Ser Ser Asp Lys Thr His Thr Ser Pro Pro Ser Pro Ala Pro Glu Leu 
    130                 135                 140                 


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


Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val 
                165                 170                 175     


Ser His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val 
            180                 185                 190         


Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser 
        195                 200                 205             


Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu 
    210                 215                 220                 


Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala 
225                 230                 235                 240 


Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro 
                245                 250                 255     


Gln Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys Asn Gln 
            260                 265                 270         


Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala 
        275                 280                 285             


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


Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu 
305                 310                 315                 320 


Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser 
                325                 330                 335     


Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser 
            340                 345                 350         


Leu Ser Pro Gly 
        355     


<210>  9
<211>  124
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  CTLA4 Extracellular Domain with A29Y and L104E Mutations

<400>  9

Met His Val Ala Gln Pro Ala Val Val Leu Ala Ser Ser Arg Gly Ile 
1               5                   10                  15      


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


Arg Val Thr Val Leu Arg Gln Ala Asp Ser Gln Val Thr Glu Val Cys 
        35                  40                  45              


Ala Ala Thr Tyr Met Met Gly Asn Glu Leu Thr Phe Leu Asp Asp Ser 
    50                  55                  60                  


Ile Cys Thr Gly Thr Ser Ser Gly Asn Gln Val Asn Leu Thr Ile Gln 
65                  70                  75                  80  


Gly Leu Arg Ala Met Asp Thr Gly Leu Tyr Ile Cys Lys Val Glu Leu 
                85                  90                  95      


Met Tyr Pro Pro Pro Tyr Tyr Glu Gly Ile Gly Asn Gly Thr Gln Ile 
            100                 105                 110         


Tyr Val Ile Asp Pro Glu Pro Cys Pro Asp Ser Asp 
        115                 120                 


