5igl

Crystal structure of the second bromodomain of human TAF1L in complex with bromosporine (BSP)

spinqualitylabelsall models 5igl, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5igl 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 2.1Å Ligands: BMF Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TAF1L_HUMAN May act as a functional substitute for TAF1/TAFII250 during male meiosis, when sex chromosomes are transcriptionally silenced. Publication Abstract from PubMed Bromodomains (BRDs) have emerged as compelling targets for cancer therapy. The development of selective and potent BET (bromo and extra-terminal) inhibitors and their significant activity in diverse tumor models have rapidly translated into clinical studies and have motivated drug development efforts targeting non-BET BRDs. However, the complex multidomain/subunit architecture of BRD protein complexes complicates predictions of the consequences of their pharmacological targeting. To address this issue, we developed a promiscuous BRD inhibitor [bromosporine (BSP)] that broadly targets BRDs (including BETs) with nanomolar affinity, creating a tool for the identification of cellular processes and diseases where BRDs have a regulatory function. As a proof of principle, we studied the effects of BSP on leukemic cell lines known to be sensitive to BET inhibition and found, as expected, strong antiproliferative activity. Comparison of the modulation of transcriptional profiles by BSP after a short exposure to the inhibitor resulted in a BET inhibitor signature but no significant additional changes in transcription that could account for inhibition of other BRDs. Thus, nonselective targeting of BRDs identified BETs, but not other BRDs, as master regulators of context-dependent primary transcription response. Promiscuous targeting of bromodomains by bromosporine identifies BET proteins as master regulators of primary transcription response in leukemia.,Picaud S, Leonards K, Lambert JP, Dovey O, Wells C, Fedorov O, Monteiro O, Fujisawa T, Wang CY, Lingard H, Tallant C, Nikbin N, Guetzoyan L, Ingham R, Ley SV, Brennan P, Muller S, Samsonova A, Gingras AC, Schwaller J, Vassiliou G, Knapp S, Filippakopoulos P Sci Adv. 2016 Oct 12;2(10):e1600760. eCollection 2016 Oct. PMID:27757418 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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