3rva

Crystal structure of organophosphorus acid anhydrolase from Alteromonas macleodii

spinqualitylabelsall models 3rva, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3rva is a 1 chain structure with sequence from Altma. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MN, NI, PO4 NonStd Res: CSO Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The bacterial enzyme organophosphorus acid anhydrolase (OPAA) is able to catalyze the hydrolysis of both proline dipeptides (Xaa-Pro) and several types of organophosphate (OP) compounds. The full three-dimensional structure of the manganese-dependent OPAA enzyme is presented for the first time. This enzyme, which was originally isolated from the marine bacterium Alteromonas macleodii, was prepared recombinantly in Escherichia coli. The crystal structure was determined at 1.8 A resolution in space group C2, with unit-cell parameters a = 133.8, b = 49.2, c = 97.3 A, beta = 125.0 degrees . The enzyme forms dimers and their existence in solution was confirmed by dynamic light scattering and size-exclusion chromatography. The enzyme shares the pita-bread fold of its C-terminal domain with related prolidases. The binuclear manganese centre is located in the active site within the pita-bread domain. Moreover, an Ni(2+) ion from purification was localized according to anomalous signal. This study presents the full structure of this enzyme with complete surroundings of the active site and provides a critical analysis of its relationship to prolidases. Organophosphorus acid anhydrolase from Alteromonas macleodii: structural study and functional relationship to prolidases.,Stepankova A, Duskova J, Skalova T, Hasek J, Koval' T, Ostergaard LH, Dohnalek J Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Apr 1;69(Pt 4):346-54., doi: 10.1107/S1744309113002674. Epub 2013 Mar 28. PMID:23545636 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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