6kec

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Crystal structure of BRD4 bromodomain 1 (BD1) in complex with 4-ethoxy-5,16-dimethoxy-11-methyl-2-oxa-11-azatetracyclo[8.6.1.03,8.013,17]heptadeca-1(17),3,5,7,9,13,15-heptaen-12-one

Structural highlights

6kec 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 1.35Å
Ligands:D9C, FMT
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

Epigenetic regulation is known to play a key role in progression of anti-cancer therapeutics. Lysine acetylation is an important mechanism in controlling gene expression. There has been increasing interest in bromodomain owing to its ability to modulate transcription of various genes as an epigenetic 'reader.' Herein, we report the design, synthesis, and X-ray studies of novel aristoyagonine (benzo[6,7]oxepino[4,3,2-cd]isoindol-2(1H)-one) derivatives and investigate their inhibitory effect against Brd4 bromodomain. Five compounds 8ab, 8bc, 8bd, 8be, and 8bf have been discovered with high binding affinity over the Brd4 protein. Co-crystal structures of these five inhibitors with human Brd4 bromodomain demonstrated that it has a key binding mode occupying the hydrophobic pocket, which is known to be the acetylated lysine binding site. These novel Brd4 bromodomain inhibitors demonstrated impressive inhibitory activity and mode of action for the treatment of cancer diseases.

Synthesis and Structure-Activity Relationships of Aristoyagonine Derivatives as Brd4 Bromodomain Inhibitors with X-ray Co-Crystal Research.,Yoo M, Park TH, Yoo M, Kim Y, Lee JY, Lee KM, Ryu SE, Lee BI, Jung KY, Park CH Molecules. 2021 Mar 17;26(6). pii: molecules26061686. doi:, 10.3390/molecules26061686. PMID:33802888[3]

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

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Citations
1 reviews cite this structure
Bromodomain inhibitors and therapeutic applications.
Gajjela et al. (2023)
0 more
3 other articles
No citations found

See Also

References

  1. ↑ 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
  2. ↑ 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
  3. ↑ Yoo M, Park TH, Yoo M, Kim Y, Lee JY, Lee KM, Ryu SE, Lee BI, Jung KY, Park CH. Synthesis and Structure-Activity Relationships of Aristoyagonine Derivatives as Brd4 Bromodomain Inhibitors with X-ray Co-Crystal Research. Molecules. 2021 Mar 17;26(6). pii: molecules26061686. doi:, 10.3390/molecules26061686. PMID:33802888 doi:http://dx.doi.org/10.3390/molecules26061686

Contents


PDB ID 6kec

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OCA

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