Unlocking the sugar "steric gate" of DNA polymerases.
Unlocking the sugar "steric gate" of DNA polymerases.
复制标题
解锁 DNA 聚合酶的糖“空间门”。
DOI:
10.1021/bi101915z
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发表时间:
2011-02-22
期刊:
影响因子:
2.9
通讯作者:
Suo Z
中科院分区:
文献类型:
--
作者:
Brown JA;Suo Z
To maintain genomic stability, ribonucleotide incorporation during DNA synthesis is controlled predominantly at the DNA polymerase level. A steric clash between the 2′-hydroxyl of an incoming ribonucleotide and a bulky active site residue, known as the ‘steric gate’, establishes an effective mechanism for most DNA polymerases to selectively insert deoxyribonucleotides. Recent kinetic, structural, and in vivo studies have illuminated novel features about ribonucleotide exclusion and the mechanistic consequences of ribonucleotide misincorporation on downstream events, such as the bypass of a ribonucleotide in a DNA template and the subsequent extension of the DNA lesion bypass product. These important findings are summarized in this review article.
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