2b2s | pdb_00002b2s

Crystal structure of an oxoferryl species of catalase-peroxidase KATG at pH7.5

spinqualitylabelsall models 2b2s, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2b2s is a 2 chain structure with sequence from Burkholderia pseudomallei. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: HEM, NA, O Related: 1mwv, 2b2r, 2b2q, 2b2o Gene: katG (Burkholderia pseudomallei) Activity: Catalase, with EC number 1.11.1.6 Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The catalase reaction of catalase-peroxidases involves catalase-specific features built into a peroxidase core. An arginine, 20 A from the active-site heme, acts as a molecular switch moving between two conformations, one that activates heme oxidation and one that activates oxoferryl heme reduction by H(2)O(2), facilitating the catalatic pathway in a peroxidase. The influence of the arginine is imparted to the heme through its association with or dissociation from a tyrosinate that modulates reactivity through a Met-Tyr-Trp crosslinked adduct and a pi electron interaction of the heme with the adduct Trp. A molecular switch and electronic circuit modulate catalase activity in catalase-peroxidases.,Carpena X, Wiseman B, Deemagarn T, Singh R, Switala J, Ivancich A, Fita I, Loewen PC EMBO Rep. 2005 Dec;6(12):1156-62. PMID:16211084 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Catalase

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