4unp

Mtb TMK in complex with compound 34

spinqualitylabelsall models 4unp, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4unp is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: TXW Related: 4unn, 4unq, 4unr, 4uns Activity: dTMP kinase, with EC number 2.7.4.9 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [KTHY_MYCTO] Catalyzes the reversible phosphorylation of deoxythymidine monophosphate (dTMP) to deoxythymidine diphosphate (dTDP), using ATP as its preferred phosphoryl donor. Situated at the junction of both de novo and salvage pathways of deoxythymidine triphosphate (dTTP) synthesis, is essential for DNA synthesis and cellular growth (By similarity). Publication Abstract from PubMed M. tuberculosis thymidylate kinase (Mtb TMK) has been shown in vitro to be an essential enzyme in DNA synthesis. In order to identify novel leads for Mtb TMK, we performed a high throughput biochemical screen and an NMR based fragment screen through which we discovered two novel classes of inhibitors, 3-cyanopyridones and 1,6-naphthyridin-2-ones, respectively. We describe three cyanopyridone subseries that arose during our hit to lead campaign, along with cocrystal structures of representatives with Mtb TMK. Structure aided optimization of the cyanopyridones led to single digit nanomolar inhibitors of Mtb TMK. Fragment based lead generation, augmented by crystal structures and the SAR from the cyanopyridones, enabled us to drive the potency of our 1,6-naphthyridin-2-one fragment hit from 500 muM to 200 nM while simultaneously improving the ligand efficiency. Cyanopyridone derivatives containing sulfoxides and sulfones showed cellular activity against M. tuberculosis. To the best of our knowledge, these compounds are the first reports of non-thymidine-like inhibitors of Mtb TMK. Structure guided lead generation for M. tuberculosis thymidylate kinase (Mtb TMK): discovery of 3-cyanopyridone and 1,6-naphthyridin-2-one as potent inhibitors.,Naik M, Raichurkar A, Bandodkar BS, Varun BV, Bhat S, Kalkhambkar R, Murugan K, Menon R, Bhat J, Paul B, Iyer H, Hussein S, Tucker JA, Vogtherr M, Embrey KJ, McMiken H, Prasad S, Gill A, Ugarkar BG, Venkatraman J, Read J, Panda M J Med Chem. 2015 Jan 22;58(2):753-66. doi: 10.1021/jm5012947. Epub 2014 Dec 23. PMID:25486447 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Thymidylate kinase

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