主权项 |
1. A polypeptide comprising the amino acid sequence:
Xaa1-Xaa2-Xaa3-Cys4-Xaa5-Xaa6-Cys7-Xaa8-Xaa9-Xaa10-Ala11-Cys12-Xaa13-Xaa14-Cys15-Xaa16-Xaa17-Xaa18 [SEQ ID NO: 22] wherein Xaa1 is Gly, Asn, Pro, Gln, Ser, Thr, Ala, Val, Leu, Ile, Met, Phe, Trp, Tyr or is absent; Xaa2 is Asp, Glu, Gly, His, Asn, Ser, Gln, Thr or is absent; Xaa3 is Thr, Glu, Asp, or Ser; Xaa5 is P-Ser, P-Thr, P-homo-Ser, 4-hydroxyvaline phosphate, P-homo-Thr, P-Cys or P-Tyr Xaa6 is Ile or Leu; Xaa8 is Val, Ile, Ala, or Leu; Xaa9 is Asn, Tyr, Phe, or Gln; Xaa10 is Val, Ile, Ala, Leu or Pro; Xaa13 is Ala, Ser or Thr; Xaa14 is Gly or Ala; Xaa16 is Leu, Ile, Phe, Trp, Tyr, or is absent; Xaa17 is Arg, Lys, Ala, Leu, Val, Ile, Ser, Thr, Met, Phe, Trp, Tyr, Asp, Glu, Gln, Asn or is absent; and Xaa18 is Arg, Lys, Ala, Leu, Val, Ile, Ser, Thr, Met, Phe, Trp, Tyr, Asp, Glu, Gln, Asn or is absent. |