| prov:value
| - mino acids comprise WZ2 Z3 Z4 GZ1 W (SEQ ID NO: 4) where Z1 is L or I; Z2 is D, S, or T; Z3 is D, E, or T; and Z4 is D, H, N, R, or T. An especially preferred embodiment is one having the substitution patterns just described, but comprising 8, 10, or 12 amino acid residues.
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