prov:value
| - , Asp, and Asn; M is selected from the group consisting of Phe, Pro, Hypro, Tyr, Ala, Val, Leu, Ile, Ser, Thr, Asp, Asn, Glu, and Gln; and R3 is a hydroxyl group, an amino group, or a peptide of the sequence -Gly-Arg-Arg-Arg-Arg-Asp-Leu-Gln-Ala, -Gly-Arg-Arg-Arg-Arg, or -Gly-Lys-Lys-Arg; (b) a peptide having the formula of (a) in which up to 10 amino acids of the C-terminal end of the peptide are
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