胰蛋白酶把蛋白质分解成多肽,为什么不是氨基酸?

2025-03-24 19:27:46
推荐回答(4个)
回答1:

胰蛋白酶的分解是有选择性的,就是说只能在特定的位置。
胰蛋白酶主要作用于精氨酸或赖氨酸羧基端的肽键,所以不能分解所有肽键,就只能得到多肽而不是氨基酸。

回答2:

酶具有专一性,蛋白酶只能水解蛋白质形成短肽,如果要将蛋白质彻底水解为氨基酸,还需要肽酶。

回答3:

酶的作用是特异性的。胰蛋白酶Trypsin (Parenzyme) 为蛋白酶的一种,在脊椎动物中,作为消化酶而起作用。在胰脏是作为酶的前体胰蛋白酶原而被合成的。作为胰液的成分而分泌,受肠激酶,或胰蛋白酶的限制分解成为活化胰蛋白酶,是肽链内切酶,它能把多肽链中赖氨酸和精氨酸残基中的羧基侧切断。它不仅起消化酶的作用,而且还能限制分解糜蛋白酶原、羧肽酶原、磷脂酶原等其它酶的前体,起活化作用。是特异性最强的蛋白酶,

回答4:

蛋白酶只能把蛋白质分解成多肽,分解成氨基酸要对多肽使用肽酶

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