H-SER-ALA-LYS-LEU-CYS-PRO-GLY-GLY-ASN-CYS-VAL-OH

SER-ALA-LYS-LEU-CYS-PRO-GLY-GLY-ASN-CYS-VAL SEA URCHIN

ser-ala-lys-leu-cys-pro-gly-gly-asn-cys-val [disulfide bridge: 5-10]

Ser-Ala-Alloresact, Ser-Ala-SperM-activating peptide A (Glyptocidaris crenularis egg jelly coat), Peptide serine-alanine-SAP-IIB (Glyptocidaris crenularis)