Protamine P1 (human sperm reduced),9-L-lysine-14-L-cysteine-15-L-arginine-17-L-arginine-19-L-arginine-21-L-cysteine-28-L-cysteine-30-L-arginine-31-L-arginine-35-L-arginine-36-L-cysteine-37-L-cysteine-38-L-arginine-39-L-arginine-41-L-arginine-42-L-serine-4