The polycomb group mutant esc leads to augmented levels of paused Pol II in the Drosophila embryo.
The polycomb group mutant esc leads to augmented levels of paused Pol II in the Drosophila embryo.
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DOI:
10.1016/j.molcel.2011.05.009
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发表时间:
2011-06-24
期刊:
影响因子:
16
通讯作者:
Levine M
中科院分区:
文献类型:
--
作者:
Chopra VS;Hendrix DA;Core LJ;Tsui C;Lis JT;Levine M
Many developmental control genes contain paused RNA Polymerase II (Pol II) and are thereby “poised” for rapid and synchronous activation in the early Drosophila embryo. Evidence is presented that Polycomb group (PcG) repressors can influence paused Pol II. ChIP-Seq and GRO-Seq assays were used to determine the genome-wide distributions of Pol II, H3K27me3 and H3K4me3 in extra sex combs (esc) mutant embryos. ESC is a key component of the Polycomb Repressive complex 2 (PRC2), which mediates H3K27me3 modification. Enhanced Pol II occupancy is observed for thousands of genes in esc mutant embryos, including genes not directly regulated by PRC2. Thus, it would appear that silent genes lacking promoter-associated paused Pol II in wild-type embryos are converted into “poised” genes with paused Pol II in esc mutants. We suggest that this conversion of silent genes into poised genes might render differentiated cell types susceptible to switches in identity in PcG mutants.
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DOI:
10.1016/j.cub.2009.02.055
发表时间:
2009-04-28
期刊:
Current biology : CB
影响因子:
--
作者:
Chopra VS;Hong JW;Levine M
通讯作者:
Levine M
DOI:
10.1126/science.1181421
发表时间:
2010-01-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Nechaev S;Fargo DC;dos Santos G;Liu L;Gao Y;Adelman K
通讯作者:
Adelman K
影响因子:
64.5
作者:
Czermin, B;Melfi, R;Pirrotta, V
通讯作者:
Pirrotta, V
影响因子:
11.8
作者:
Oktaba, Katarzyna;Gutierrez, Luis;Mueller, Juerg
通讯作者:
Mueller, Juerg
影响因子:
7
作者:
Enderle, Daniel;Beisel, Christian;Paro, Renato
通讯作者:
Paro, Renato