Patent ID: 8034773

Claim:
A substantially purified polypeptide consisting of an amino acid sequence according to formula 1: B1-[X1-Q-X2-X3-X4-X5-X6-X7-X8-X9-X10-X11]-B2; wherein X1 is selected from the group consisting of V, E, and A, or is absent; X2 is selected from the group consisting of A, N, and G; X3 is any amino acid; X4 is selected from the group consisting of P and Q; X5 is selected from the group consisting of S, R, and C; X6 is selected from the group consisting of N, L, G, and K; X7 is selected from the group consisting of Q, A, S, and H; X8 is selected from the group consisting of H, L, and A; X9 is selected from the group consisting of S and T; X10 is selected from the group consisting of P and A; X11 is selected from the group consisting of R, G, and P; and wherein B1 and B2 are independently 1-5 amino acids, or are absent.