4OGJ

Crystal Structure of the first bromodomain of human BRD4 in complex with the inhibitor TG-101348

Summary for 4OGJ

• Entry DOI: 10.2210/pdb4ogj/pdb
• Related: 4OGI
• Descriptor: Bromodomain-containing protein 4, 1,2-ETHANEDIOL, N-tert-butyl-3-{[5-methyl-2-({4-[2-(pyrrolidin-1-yl)ethoxy]phenyl}amino)pyrimidin-4-yl]amino}benzenesulfonamide, ... (4 entities in total)
• Functional Keywords: bromodomain, bromodomain containing protein 4, jak2 kinase inhibitor, flt3 kinase inhibitor, structural genomics, structural genomics consortium, sgc, transcription-inhibitor complex, transcription/inhibitor
• Biological source: Homo sapiens (human)
• Total number of polymer chains: 2
• Total formula weight: 31434.32

Authors

Filippakopoulos, P.,Picaud, S.,Jose, B.,Martin, S.,Fedorov, O.,von Delft, F.,Arrowsmith, C.H.,Edwards, A.M.,Bountra, C.,Knapp, S.,Structural Genomics Consortium (SGC) (deposition date: 2014-01-16, release date: 2014-02-26, Last modification date: 2023-09-20)

Primary citation

Ciceri, P.,Muller, S.,O'Mahony, A.,Fedorov, O.,Filippakopoulos, P.,Hunt, J.P.,Lasater, E.A.,Pallares, G.,Picaud, S.,Wells, C.,Martin, S.,Wodicka, L.M.,Shah, N.P.,Treiber, D.K.,Knapp, S.
Dual kinase-bromodomain inhibitors for rationally designed polypharmacology.
Nat.Chem.Biol., 10:305-312, 2014

PubMed Abstract: Concomitant inhibition of multiple cancer-driving kinases is an established strategy to improve the durability of clinical responses to targeted therapies. The difficulty of discovering kinase inhibitors with an appropriate multitarget profile has, however, necessitated the application of combination therapies, which can pose major clinical development challenges. Epigenetic reader domains of the bromodomain family have recently emerged as new targets for cancer therapy. Here we report that several clinical kinase inhibitors also inhibit bromodomains with therapeutically relevant potencies and are best classified as dual kinase-bromodomain inhibitors. Nanomolar activity on BRD4 by BI-2536 and TG-101348, which are clinical PLK1 and JAK2-FLT3 kinase inhibitors, respectively, is particularly noteworthy as these combinations of activities on independent oncogenic pathways exemplify a new strategy for rational single-agent polypharmacological targeting. Furthermore, structure-activity relationships and co-crystal structures identify design features that enable a general platform for the rational design of dual kinase-bromodomain inhibitors.

PubMed: 24584101
DOI: 10.1038/nchembio.1471

Experimental method

X-RAY DIFFRACTION (1.65 Å)