3sft

Crystal structure of Thermotoga maritima CheB methylesterase catalytic domain

spinqualitylabelsall models 3sft, resolution 2.15Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3sft is a 1 chain structure with sequence from Thermotoga maritima. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.15Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CHEB_THEMA Involved in the modulation of the chemotaxis system; catalyzes the demethylation of specific methylglutamate residues introduced into the chemoreceptors (methyl-accepting chemotaxis proteins) by CheR (By similarity). Publication Abstract from PubMed We have determined 2.2 A resolution crystal structure of Thermotoga maritima CheB methylesterase domain to provide insight into the interaction mode between CheB and chemoreceptors. T. maritima CheB methylesterase domain has identical topology of a modified doubly-wound alpha/beta fold that was observed from the previously reported Salmonella typhimurium counterpart, but the analysis of the electrostatic potential surface near the catalytic triad indicated considerable charge distribution difference. As the CheB demethylation consensus sites of the chemoreceptors, the CheB substrate, are not uniquely conserved between T. maritima and S. typhimurium, such surfaces with differing electrostatic properties may reflect CheB regions that mediate protein-protein interaction. Via the computational docking of the two T. maritima and S. typhimurium CheB structures to the respective T. maritima and Escherichia coli chemoreceptors, we propose a CheB:chemoreceptor interaction mode. An insight into the interaction mode between CheB and chemoreceptor from two crystal structures of CheB methylesterase catalytic domain.,Cho KH, Crane BR, Park S Biochem Biophys Res Commun. 2011 Jul 22;411(1):69-75. doi:, 10.1016/j.bbrc.2011.06.090. Epub 2011 Jun 21. PMID:21722627 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Chemotaxis protein 3D structures

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