Brd4 and JMJD6-associated anti-pause enhancers in regulation of transcriptional pause release.

Brd4 and JMJD6-associated anti-pause enhancers in regulation of transcriptional pause release.
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DOI:
10.1016/j.cell.2013.10.056
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发表时间:
2013-12-19
期刊:
影响因子:
64.5
通讯作者:
Rosenfeld MG
Rosenfeld MG
中科院分区:
生物学1区
文献类型:
--
作者:
Liu W;Ma Q;Wong K;Li W;Ohgi K;Zhang J;Aggarwal A;Rosenfeld MG

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Distal enhancers characterized by H3K4me1 mark play critical roles in developmental and transcriptional programs. However, potential roles of specific distal regulatory elements in regulating RNA Polymerase II (Pol II) promoter-proximal pause release remain poorly investigated. Here we report that a unique cohort of jumonji C domain-containing protein 6 (JMJD6) and bromodomain-containing protein 4 (Brd4) co-bound distal enhancers, termed anti-pause enhancers (A-PEs), regulate promoter-proximal pause release of a large subset of transcription units via long-range interactions. Brd4-dependent JMJD6 recruitment on A-PEs mediates erasure of H4R3me2(s), which is directly read by 7SK snRNA, and decapping/demethylation of 7SK snRNA, ensuring the dismissal of the 7SKsnRNA/HEXIM inhibitory complex. The interactions of both JMJD6 and Brd4 with the P-TEFb complex permit its activation and pause release of regulated coding genes. The functions of JMJD6/ Brd4-associated dual histone and RNA demethylase activity on anti-pause enhancers have intriguing implications for these proteins in development, homeostasis and disease.
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