4apa

Crystal structure of Mycobacterium tuberculosis fumarase (Rv1098c) S318A in apo form

spinqualitylabelsall models 4apa, resolution 2.04Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4apa is a 4 chain structure with sequence from Mycobacterium tuberculosis H37Rv. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.04Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function FUMC_MYCTU Catalyzes the reversible addition of water to fumarate to give L-malate. Publication Abstract from PubMed rv1098c, an essential gene in Mycobacterium tuberculosis, codes for a class II fumarase. We describe here the crystal structure of Rv1098c in complex with l-malate, fumarate or the competitive inhibitor meso-tartrate. The models reveal that substrate binding promotes the closure of the active site through conformational changes involving the catalytic SS-loop and the C-terminal domain, which likely represents a general feature of this enzyme superfamily. Analysis of ligand-enzyme interactions as well as site-directed mutagenesis suggest Ser318 as one of the two acid-base catalysts. STRUCTURED SUMMARY OF PROTEIN INTERACTIONS: Rv1098c and Rv1098c bind by X-ray crystallography (View interaction). Conformational changes upon ligand binding in the essential class II fumarase Rv1098c from Mycobacterium tuberculosis.,Mechaly AE, Haouz A, Miras I, Barilone N, Weber P, Shepard W, Alzari PM, Bellinzoni M FEBS Lett. 2012 Jun 4;586(11):1606-11. Epub 2012 May 3. PMID:22561013 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Fumarase

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