Tet proteins can convert 5-methylcytosine to 5-formylcytosine and 5-carboxylcytosine.
Tet proteins can convert 5-methylcytosine to 5-formylcytosine and 5-carboxylcytosine.
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DOI:
10.1126/science.1210597
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发表时间:
2011-09-02
期刊:
影响因子:
--
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Ito S;Shen L;Dai Q;Wu SC;Collins LB;Swenberg JA;He C;Zhang Y
5-methylcytosine (5mC) in DNA plays an important role in gene expression, genomic imprinting, and suppression of transposable elements. 5mC can be converted to 5-hydroxymethylcytosine (5hmC) by the Tet proteins. Here we show that, in addition to 5hmC, the Tet proteins can generate 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC) from 5mC in an enzymatic activity-dependent manner. Furthermore, we reveal the presence of 5fC and 5caC in genomic DNA of mouse ES cells and mouse organs. The genomic content of 5hmC, 5fC, and 5caC can be increased or reduced through overexpression or depletion of Tet proteins. Thus, we identify two new cytosine derivatives in genomic DNA as the products of Tet proteins. Our study raises the possibility that DNA demethylation may occur through Tet-catalyzed oxidation followed by decarboxylation.
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DOI:
10.1016/j.jchromb.2009.12.004
发表时间:
2010-02-01
影响因子:
3
作者:
Boysen, Gunnar;Collins, Leonard B.;Swenberg, James A.
通讯作者:
Swenberg, James A.
影响因子:
3.7
作者:
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Carell T
DOI:
10.1126/science.1170116
发表时间:
2009-05-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Tahiliani M;Koh KP;Shen Y;Pastor WA;Bandukwala H;Brudno Y;Agarwal S;Iyer LM;Liu DR;Aravind L;Rao A
通讯作者:
Rao A
影响因子:
64.5
作者:
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通讯作者:
Song H
影响因子:
5.2
作者:
Dai, Qing;He, Chuan
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He, Chuan