鱼精蛋白是小分子肽，有些蛋白酶如胰凝乳蛋白酶、胰蛋白酶、木瓜蛋白酶、胃蛋白酶可分解它，使其一级结构受到破坏，从而影响它的抗菌活性。

Being a small peptide molecule, protamine's basic structure can be destroyed and it's antimicrobial efficacy largely affected by some protein enzymes like chymotrypsin, trypsin, papain and pepsin.

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