7dn4

From Proteopedia

The crystal structure of Cpd8 in complex with BPTF bromodomain

Structural highlights

7dn4 is a 6 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 2.841Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

BPTF_HUMAN Histone-binding component of NURF (nucleosome-remodeling factor), a complex which catalyzes ATP-dependent nucleosome sliding and facilitates transcription of chromatin. Specifically recognizes H3 tails trimethylated on 'Lys-4' (H3K4me3), which mark transcription start sites of virtually all active genes. May also regulate transcription through direct binding to DNA or transcription factors.

Publication Abstract from PubMed

Bromodomain and PHD finger containing transcription factor (BPTF) is a multidomain protein that regulates the transcription of chromatin and is related to many cancers. Herein, we report the screening-based discovery of Cpd1, a compound with micromolar affinity to the BPTF bromodomain. Through structure-guided optimization, we synthesized a variety of new inhibitors. Among these compounds, Cpd8 and Cpd10 were highly potent and selective inhibitors, with KD values of 428 nM and 655 nM in ITC assays, respectively. The high activity was explained by the cocrystal structure of Cpd8 in complex with the BPTF bromodomain protein. Cpd8 and Cpd10 were able to stabilize the BPTF bromodomain protein in cells in a cellular thermal shift assay (CETSA). Cpd8 downregulated c-MYC expression in A549 cells. All experiments prove that these two compounds are potential BPTF inhibitors.

Discovery of selective BPTF bromodomain inhibitors by screening and structure-based optimization.,Xiong L, Mao X, Guo Y, Zhou Y, Chen M, Chen P, Yang S, Li L Biochem Biophys Res Commun. 2021 Mar 19;545:125-131. doi:, 10.1016/j.bbrc.2021.01.067. Epub 2021 Feb 3. PMID:33548625^[1]

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

References

↑ Xiong L, Mao X, Guo Y, Zhou Y, Chen M, Chen P, Yang S, Li L. Discovery of selective BPTF bromodomain inhibitors by screening and structure-based optimization. Biochem Biophys Res Commun. 2021 Mar 19;545:125-131. PMID:33548625 doi:10.1016/j.bbrc.2021.01.067