SEQRES 1 V 51 SER SER VAL ALA CYS ASN THR CYS LEU LYS ILE ILE ARG SEQRES 2 V 51 ASN ASP SER PHE HIS CYS THR LYS CYS PHE ASP PHE ASP SEQRES 3 V 51 VAL CYS ARG ASP CYS TYR ALA LYS GLN ALA PHE LEU HIS SEQRES 4 V 51 PRO CYS PRO LYS PRO HIS PHE VAL LEU VAL ARG SER