Conversion of 5-Methylcytosine to 5-Hydroxymethylcytosine in Mammalian DNA by the MLL Partner TET1
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Conversion of 5-Methylcytosine to 5-Hydroxymethylcytosine in Mammalian DNA by the MLL Partner TET1
| Title: | Conversion of 5-Methylcytosine to 5-Hydroxymethylcytosine in Mammalian DNA by the MLL Partner TET1 |
| Author: |
Tahiliani, Mamta V.; Koh, Kian Peng; Shen, Yinghua; Pastor, William Abraham; Bandukwala, Hozefa S; Brudno, Yevgeny; Agarwal, Suneet; Iyer, Lakshminarayan M.; Liu, David Ruchien; Aravind, L; Rao, Anjana
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Tahiliani, Mamta, Kian Peng Koh, Yinghua Shen, William A. Pastor, Hozefa Bandukwala, Yevgeny Brudno, Suneet Agarwal, Lakshminarayan M. Iyer, David R. Liu, L. Aravind, and Anjana Rao. 2009. Conversion of 5-methylcytosine to 5-hydroxymethylcytosine in mammalian DNA by MLL partner TET1. Science 324(5929): 930-935. |
| Full Text & Related Files: |
Tahiliani_Conversion5methylcytosine.pdf (2.741Mb; PDF) 
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| Abstract: | DNA cytosine methylation is crucial for retrotransposon silencing and mammalian development. In a computational search for enzymes that could modify 5-methylcytosine (5mC), we identified TET proteins as mammalian homologs of the trypanosome proteins JBP1 and JBP2, which have been proposed to oxidize the 5-methyl group of thymine. We show here that TET1, a fusion partner of the MLL gene in acute myeloid leukemia, is a 2-oxoglutarate (2OG)- and Fe(II)-dependent enzyme that catalyzes conversion of 5mC to 5-hydroxymethylcytosine (hmC) in cultured cells and in vitro. hmC is present in the genome of mouse embryonic stem cells, and hmC levels decrease upon RNA interference–mediated depletion of TET1. Thus, TET proteins have potential roles in epigenetic regulation through modification of 5mC to hmC. |
| Published Version: | http://dx.doi.org/10.1126/science.1170116 |
| Other Sources: | http://evolve.harvard.edu/55-hmC-Science.pdf |
| Terms of Use: | This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:3415331 |
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