                               SEQUENCE LISTING

<110> REGENERON PHARMACEUTICALS, INC.
 
<120> ELECTRON TRANSFER DISSOCIATION AND MASS SPECTROMETRY FOR IMPROVED
      PROTEIN SEQUENCING OF MONOCLONAL ANTIBODIES

<130> 070816-02162

<140> PCT/US2022/017935
<141> 2022-02-25

<150> 63/153,886
<151> 2021-02-25

<160> 6     

<170> PatentIn version 3.5

<210> 1
<211> 453
<212> PRT
<213> Artificial Sequence

<220>
<223> Description of Artificial Sequence: Synthetic
      polypeptide

<400> 1
Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Glu Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Gly Ser Gly Phe Thr Phe Arg Asp Tyr 
            20                  25                  30          


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


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


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


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


Ala Lys Asp Arg Leu Ser Ile Thr Ile Arg Pro Arg Tyr Tyr Gly Leu 
            100                 105                 110         


Asp Val Trp Gly Gln Gly Thr Thr Val Thr Val Ser Ser Ala Ser Thr 
        115                 120                 125             


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


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


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


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


Val Val Thr Val Pro Ser Ser Ser Leu Gly Thr Lys Thr Tyr Thr Cys 
        195                 200                 205             


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


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


Gly Gly Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu 
                245                 250                 255     


Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser 
            260                 265                 270         


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


Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Phe Asn Ser Thr 
    290                 295                 300                 


Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn 
305                 310                 315                 320 


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


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


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


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


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


Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Arg Leu 
                405                 410                 415     


Thr Val Asp Lys Ser Arg Trp Gln Glu Gly Asn Val Phe Ser Cys Ser 
            420                 425                 430         


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


Leu Ser Leu Gly Lys 
    450             


<210> 2
<211> 219
<212> PRT
<213> Artificial Sequence

<220>
<223> Description of Artificial Sequence: Synthetic
      polypeptide

<400> 2
Asp Ile Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly 
1               5                   10                  15      


Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Leu Tyr Ser 
            20                  25                  30          


Ile Gly Tyr Asn Tyr Leu Asp Trp Tyr Leu Gln Lys Ser Gly Gln Ser 
        35                  40                  45              


Pro Gln Leu Leu Ile Tyr Leu Gly Ser Asn Arg Ala Ser Gly Val Pro 
    50                  55                  60                  


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


Ser Arg Val Glu Ala Glu Asp Val Gly Phe Tyr Tyr Cys Met Gln Ala 
                85                  90                  95      


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


Arg Thr Val Ala Ala Phe Ser Val Phe Ile Phe Pro Pro Ser Asp Glu 
        115                 120                 125             


Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe 
    130                 135                 140                 


Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp His Ala Leu Gln 
145                 150                 155                 160 


Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser 
                165                 170                 175     


Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr Glu 
            180                 185                 190         


Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser Ser 
        195                 200                 205             


Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 


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

<220>
<223> Description of Artificial Sequence: Synthetic
      polypeptide

<400> 3
Gly Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met 
1               5                   10                  15      


Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Ser His 
            20                  25                  30          


Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val 
        35                  40                  45              


His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr 
    50                  55                  60                  


Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly 
65                  70                  75                  80  


Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile 
                85                  90                  95      


Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val 
            100                 105                 110         


Tyr Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser 
        115                 120                 125             


Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu 
    130                 135                 140                 


Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro 
145                 150                 155                 160 


Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val 
                165                 170                 175     


Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met 
            180                 185                 190         


His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser 
        195                 200                 205             


Pro Gly 
    210 


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

<220>
<223> Description of Artificial Sequence: Synthetic
      polypeptide

<400> 4
Asp Ile Gln Met Thr Gln Ser Pro Ser Thr Leu Ser Ala Ser Val Gly 
1               5                   10                  15      


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


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


Asp Thr Ser Lys Leu Ala Ser Gly Val Pro Ser Arg Phe Ser Gly Ser 
    50                  55                  60                  


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


Asp Phe Ala Thr Tyr Tyr Cys Phe Gln Gly Ser Gly Tyr Pro Phe Thr 
                85                  90                  95      


Phe Gly Gly Gly Thr Lys Val Glu Ile Lys Arg Thr Val Ala Ala Pro 
            100                 105                 110         


Ser Val Phe Ile Phe Pro Pro Ser Asp Glu Gln Leu Lys Ser Gly Thr 
        115                 120                 125             


Ala Ser Val Val Cys Leu Leu Asn Asn Phe Tyr Pro Arg Glu Ala Lys 
    130                 135                 140                 


Val Gln Trp Lys Val Asp Asn Ala Leu Gln Ser Gly Asn Ser Gln Glu 
145                 150                 155                 160 


Ser Val Thr Glu Gln Asp Ser Lys Asp Ser Thr Tyr Ser Leu Ser Ser 
                165                 170                 175     


Thr Leu Thr Leu Ser Lys Ala Asp Tyr Glu Lys His Lys Val Tyr Ala 
            180                 185                 190         


Cys Glu Val Thr His Gln Gly Leu Ser Ser Pro Val Thr Lys Ser Phe 
        195                 200                 205             


Asn Arg Gly Glu Cys 
    210             


<210> 5
<211> 239
<212> PRT
<213> Artificial Sequence

<220>
<223> Description of Artificial Sequence: Synthetic
      polypeptide

<400> 5
Gln Val Thr Leu Arg Glu Ser Gly Pro Ala Leu Val Lys Pro Thr Gln 
1               5                   10                  15      


Thr Leu Thr Leu Thr Cys Thr Phe Ser Gly Phe Ser Leu Ser Thr Ala 
            20                  25                  30          


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


Trp Leu Ala Asp Ile Trp Trp Asp Asp Lys Lys His Tyr Asn Pro Ser 
    50                  55                  60                  


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


Val Leu Lys Val Thr Asn Met Asp Pro Ala Asp Thr Ala Thr Tyr Tyr 
                85                  90                  95      


Cys Ala Arg Asp Met Ile Phe Asn Phe Tyr Phe Asp Val Trp Gly Gln 
            100                 105                 110         


Gly Thr Thr 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 
225                 230                 235                 


<210> 6
<211> 4
<212> PRT
<213> Artificial Sequence

<220>
<223> Description of Artificial Sequence: Synthetic
      peptide

<400> 6
Cys Pro Pro Cys 
1               


