                               SEQUENCE LISTING

<110> REGENERON PHARMACEUTICALS, INC.
 
<120> HEAVY PEPTIDE APPROACH TO ACCURATELY MEASURE UNPROCESSED 
      C-TERMINAL LYSINE

<130> 070816-02602

<140> PCT/US2021/038136
<141> 2021-06-18

<150> 63/041,015
<151> 2020-06-18

<160> 4     

<170> PatentIn version 3.5

<210> 1
<211> 7
<212> PRT
<213> Artificial Sequence

<220>
<221> source
<223> /note="Description of Artificial Sequence: Synthetic
      peptide"

<400> 1
Ser Leu Ser Leu Ser Leu Gly 
1               5           


<210> 2
<211> 8
<212> PRT
<213> Artificial Sequence

<220>
<221> source
<223> /note="Description of Artificial Sequence: Synthetic
      peptide"

<400> 2
Ser Leu Ser Leu Ser Leu Gly Lys 
1               5               


<210> 3
<211> 7
<212> PRT
<213> Artificial Sequence

<220>
<221> source
<223> /note="Description of Artificial Sequence: Synthetic
      peptide"

<400> 3
Ser Leu Ser Leu Ser Pro Gly 
1               5           


<210> 4
<211> 8
<212> PRT
<213> Artificial Sequence

<220>
<221> source
<223> /note="Description of Artificial Sequence: Synthetic
      peptide"

<400> 4
Ser Leu Ser Leu Ser Pro Gly Lys 
1               5               


