When DNA Polymerases Multitask: Functions Beyond Nucleotidyl Transfer.

When DNA Polymerases Multitask: Functions Beyond Nucleotidyl Transfer.
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DOI:
10.3389/fmolb.2021.815845
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发表时间:
2021
影响因子:
5
通讯作者:
Doublié S
Doublié S
中科院分区:
生物学3区
文献类型:
--
作者:
Carvajal-Maldonado D;Drogalis Beckham L;Wood RD;Doublié S

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DNA聚合酶催化核苷酸转移,这是DNA多核苷酸链合成的中心反应。它们不仅在DNA复制中起作用,而且在DNA修复和重组的各个方面也起作用。一些DNA聚合酶可以进行跨损伤DNA合成,促进损伤耐受性并导致诱变。除了这些功能之外,许多DNA聚合酶还进行生物化学上不同的反应。本文介绍了DNA聚合酶的例子,进行核酸酶(3 ′-5′核酸外切酶,5′核酸酶,或末端修剪核酸酶)或裂解酶(5′ dRP裂解酶)课外活动。讨论强调了DNA聚合酶如何具有操纵DNA链的非凡能力,有时涉及相对较大的分子内运动。
DNA polymerases catalyze nucleotidyl transfer, the central reaction in synthesis of DNA polynucleotide chains. They function not only in DNA replication, but also in diverse aspects of DNA repair and recombination. Some DNA polymerases can perform translesion DNA synthesis, facilitating damage tolerance and leading to mutagenesis. In addition to these functions, many DNA polymerases conduct biochemically distinct reactions. This review presents examples of DNA polymerases that carry out nuclease (3ʹ—5′ exonuclease, 5′ nuclease, or end-trimming nuclease) or lyase (5′ dRP lyase) extracurricular activities. The discussion underscores how DNA polymerases have a remarkable ability to manipulate DNA strands, sometimes involving relatively large intramolecular movement.
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