Spermosin
Definition:
EC Tree > 3 Hydrolases > 3.4 Acting on peptide bonds (peptidases) > 3.4.21 Serine endopeptidases > 3.4.21.99 spermosin
Spermosin is an ascidian sperm serine protease in family S1 from Halocynthia roretzi, localised in the sperm head and released during sperm activation, with a proline-rich region involved in binding to the vitelline coat of the egg; it hydrolyses arginyl bonds, preferably with Pro at P2. By digesting the egg vitelline coat it enables ascidian fertilisation.
Spermosin is an ascidian sperm serine protease in family S1 from Halocynthia roretzi, localised in the sperm head and released during sperm activation, with a proline-rich region involved in binding to the vitelline coat of the egg; it hydrolyses arginyl bonds, preferably with Pro at P2. By digesting the egg vitelline coat it enables ascidian fertilisation.
References:
Biomedical Dictionary
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