核酸酶 nuclease

互联网2013-11-14

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　　作用于核酸及其分解物核苷酸和核苷的酶之总称。分为：（ 1）在核酸酶和脱氧核酸酶中，水解高分子量核酸的多聚核苷酸酶；（ 2）水解核苷酸的核苷酸酶；（ 3）水解核苷或磷酸分解的核苷酶（包括核苷磷酸化酶）；（ 4）脱掉核苷酸碱基中氨基的核酸脱氨酶等。多聚核苷酸酶的反应机理与外切核酸酶和内切核酸酶有明显的区别。

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