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5u5s

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Solution structures of Brd2 second bromodomain in complex with stat3 peptide

Structural highlights

5u5s is a 2 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	Solution NMR, 20 models
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

BRD2_HUMAN May play a role in spermatogenesis or folliculogenesis (By similarity). Binds hyperacetylated chromatin and plays a role in the regulation of transcription, probably by chromatin remodeling. Regulates transcription of the CCND1 gene. Plays a role in nucleosome assembly.^[1]

Publication Abstract from PubMed

The BET proteins are major transcriptional regulators and have emerged as new drug targets, but their functional distinction has remained elusive. In this study, we report that the BET family members Brd2 and Brd4 exert distinct genomic functions at genes whose transcription they co-regulate during mouse T helper 17 (Th17) cell differentiation. Brd2 is associated with the chromatin insulator CTCF and the cohesin complex to support cis-regulatory enhancer assembly for gene transcriptional activation. In this context, Brd2 binds the transcription factor Stat3 in an acetylation-sensitive manner and facilitates Stat3 recruitment to active enhancers occupied with transcription factors Irf4 and Batf. In parallel, Brd4 temporally controls RNA polymerase II (Pol II) processivity during transcription elongation through cyclin T1 and Cdk9 recruitment and Pol II Ser2 phosphorylation. Collectively, our study uncovers both separate and interdependent Brd2 and Brd4 functions in potentiating the genetic program required for Th17 cell development and adaptive immunity.

Distinct Roles of Brd2 and Brd4 in Potentiating the Transcriptional Program for Th17 Cell Differentiation.,Cheung KL, Zhang F, Jaganathan A, Sharma R, Zhang Q, Konuma T, Shen T, Lee JY, Ren C, Chen CH, Lu G, Olson MR, Zhang W, Kaplan MH, Littman DR, Walsh MJ, Xiong H, Zeng L, Zhou MM Mol Cell. 2017 Mar 16;65(6):1068-1080.e5. doi: 10.1016/j.molcel.2016.12.022. Epub, 2017 Mar 3. PMID:28262505^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ LeRoy G, Rickards B, Flint SJ. The double bromodomain proteins Brd2 and Brd3 couple histone acetylation to transcription. Mol Cell. 2008 Apr 11;30(1):51-60. doi: 10.1016/j.molcel.2008.01.018. PMID:18406326 doi:10.1016/j.molcel.2008.01.018
↑ Cheung KL, Zhang F, Jaganathan A, Sharma R, Zhang Q, Konuma T, Shen T, Lee JY, Ren C, Chen CH, Lu G, Olson MR, Zhang W, Kaplan MH, Littman DR, Walsh MJ, Xiong H, Zeng L, Zhou MM. Distinct Roles of Brd2 and Brd4 in Potentiating the Transcriptional Program for Th17 Cell Differentiation. Mol Cell. 2017 Mar 16;65(6):1068-1080.e5. doi: 10.1016/j.molcel.2016.12.022. Epub, 2017 Mar 3. PMID:28262505 doi:http://dx.doi.org/10.1016/j.molcel.2016.12.022