Catalytic Space Engineering as a Strategy to Activate C-H Oxidation on 5-Methylcytosine in Mammalian Genome.
Catalytic Space Engineering as a Strategy to Activate C-H Oxidation on 5-Methylcytosine in Mammalian Genome.
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催化空间工程作为哺乳动物基因组中激活5-甲基胞嘧啶C-H氧化的策略。
DOI:
10.1021/jacs.1c03815
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发表时间:
2021-08-11
影响因子:
15
通讯作者:
Islam, Kabirul
中科院分区:
文献类型:
--
作者:
Sappa, Sushma;Dey, Debasis;Sudhamalla, Babu;Islam, Kabirul
Conditional remodeling of enzyme catalysis is a formidable challenge in protein engineering. Herein, we have undertaken a unique active site engineering tactic to command catalytic outcome. With ten-eleven translocation (TET) enzyme as a paradigm, we show that variants with an expanded active site significantly enhance multi-step C-H oxidation in 5-methylcytosine (5mC) whereas a crowded cavity leads to a single-step catalytic apparatus. We further identify an evolutionarily conserved residue in the TET family with a remarkable catalysis-directing ability. The activating variant demonstrated its prowess to oxidize 5mC in chromosomal DNA for potentiating expression of genes including tumor suppressors silenced in human neoplasia.
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