6th2

Crystal structure of Mycobacterium smegmatis CoaB in complex with CTP

spinqualitylabelsall models 6th2, resolution 1.84Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6th2 is a 4 chain structure with sequence from Mycolicibacterium smegmatis MC2 155. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.844Å Ligands: ACT, CA, CTP, MES Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function COABC_MYCS2 Catalyzes two sequential steps in the biosynthesis of coenzyme A. In the first step cysteine is conjugated to 4'-phosphopantothenate to form 4-phosphopantothenoylcysteine. In the second step the latter compound is decarboxylated to form 4'-phosphopantotheine.[HAMAP-Rule:MF_02225] Publication Abstract from PubMed Coenzyme A (CoA) is a fundamental co-factor for all life, involved in numerous metabolic pathways and cellular processes, and its biosynthetic pathway has raised substantial interest as a drug target against multiple pathogens including Mycobacterium tuberculosis. The biosynthesis of CoA is performed in five steps, with the second and third steps being catalysed in the vast majority of prokaryotes, including M. tuberculosis, by a single bifunctional protein, CoaBC. Depletion of CoaBC was found to be bactericidal in M. tuberculosis. Here we report the first structure of a full-length CoaBC, from the model organism Mycobacterium smegmatis, describe how it is organised as a dodecamer and regulated by CoA thioesters. A high-throughput biochemical screen focusing on CoaB identified two inhibitors with different chemical scaffolds. Hit expansion led to the discovery of potent and selective inhibitors of M. tuberculosis CoaB, which we show to bind to a cryptic allosteric site within CoaB. Inhibiting Mycobacterium tuberculosis CoaBC by targeting an allosteric site.,Mendes V, Green SR, Evans JC, Hess J, Blaszczyk M, Spry C, Bryant O, Cory-Wright J, Chan DS, Torres PHM, Wang Z, Nahiyaan N, O'Neill S, Damerow S, Post J, Bayliss T, Lynch SL, Coyne AG, Ray PC, Abell C, Rhee KY, Boshoff HIM, Barry CE 3rd, Mizrahi V, Wyatt PG, Blundell TL Nat Commun. 2021 Jan 8;12(1):143. doi: 10.1038/s41467-020-20224-x. PMID:33420031 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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