7k6h

From Proteopedia

Crystal structure of the first bromodomain (BD1) of human BRD4 bound to XMD8-92

Structural highlights

7k6h is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.5Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

BRD4_HUMAN Note=A chromosomal aberration involving BRD4 is found in a rare, aggressive, and lethal carcinoma arising in midline organs of young people. Translocation t(15;19)(q14;p13) with NUT which produces a BRD4-NUT fusion protein.^[1] ^[2]

Function

BRD4_HUMAN Plays a role in a process governing chromosomal dynamics during mitosis (By similarity).

Publication Abstract from PubMed

BRD4 and other members of the bromodomain and extraterminal (BET) family of proteins are promising epigenetic targets for the development of novel therapeutics. Among the reported BRD4 inhibitors are dihydropteridinones and benzopyrimidodiazepinones originally designed to target the kinases PLK1, ERK5, and LRRK2. While these kinase inhibitors were identified as BRD4 inhibitors, little is known about their binding potential and structural details of interaction with the other BET bromodomains. We comprehensively characterized a series of known and newly identified dual BRD4-kinase inhibitors against all eight individual BET bromodomains. A detailed analysis of 23 novel cocrystal structures of BET-kinase inhibitor complexes in combination with direct binding assays and cell signaling studies revealed significant differences in molecular shape complementarity and inhibitory potential. Collectively, the data offer new insights into the action of kinase inhibitors across BET bromodomains, which may aid the development of drugs to inhibit certain BET proteins and kinases differentially.

Differential BET Bromodomain Inhibition by Dihydropteridinone and Pyrimidodiazepinone Kinase Inhibitors.,Karim RM, Bikowitz MJ, Chan A, Zhu JY, Grassie D, Becker A, Berndt N, Gunawan S, Lawrence NJ, Schonbrunn E J Med Chem. 2021 Nov 11;64(21):15772-15786. doi: 10.1021/acs.jmedchem.1c01096., Epub 2021 Oct 28. PMID:34710325^[3]

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

References

↑ French CA, Miyoshi I, Kubonishi I, Grier HE, Perez-Atayde AR, Fletcher JA. BRD4-NUT fusion oncogene: a novel mechanism in aggressive carcinoma. Cancer Res. 2003 Jan 15;63(2):304-7. PMID:12543779
↑ French CA, Miyoshi I, Aster JC, Kubonishi I, Kroll TG, Dal Cin P, Vargas SO, Perez-Atayde AR, Fletcher JA. BRD4 bromodomain gene rearrangement in aggressive carcinoma with translocation t(15;19). Am J Pathol. 2001 Dec;159(6):1987-92. PMID:11733348 doi:10.1016/S0002-9440(10)63049-0
↑ Karim RM, Bikowitz MJ, Chan A, Zhu JY, Grassie D, Becker A, Berndt N, Gunawan S, Lawrence NJ, Schonbrunn E. Differential BET Bromodomain Inhibition by Dihydropteridinone and Pyrimidodiazepinone Kinase Inhibitors. J Med Chem. 2021 Nov 11;64(21):15772-15786. doi: 10.1021/acs.jmedchem.1c01096., Epub 2021 Oct 28. PMID:34710325 doi:http://dx.doi.org/10.1021/acs.jmedchem.1c01096