2w7w

The crystal structure of iron superoxide dismutase from Aliivibrio salmonicida.

spinqualitylabelsall models 2w7w, resolution 1.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2w7w is a 2 chain structure with sequence from Alisl. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: FE Activity: Superoxide dismutase, with EC number 1.15.1.1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [B6ENP9_ALISL] Destroys radicals which are normally produced within the cells and which are toxic to biological systems (By similarity). 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 Superoxide dismutases (SODs) are metalloenzymes that catalyse the dismutation of the superoxide radical anion into O(2) and H(2)O(2) in a two-step reaction. The crystal structure of the iron superoxide dismutase from the cold-adapted and fish-pathogenic bacterium Aliivibrio salmonicida (asFeSOD) has been determined and refined to 1.7 A resolution. The protein has been characterized and compared with the closely related homologous iron superoxide dismutase from the mesophilic Escherichia coli (ecFeSOD) in an attempt to rationalize its environmental adaptation. ecFeSOD shares 75% identity with asFeSOD. Compared with the mesophilic FeSOD, the psychrophilic FeSOD has distinct temperature differences in residual activity and thermostability that do not seem to be related to structural differences such as intramolecular or intermolecular ion bonds, hydrogen bonds or cavity sizes. However, an increased net negative charge on the surface of asFeSOD may explain its lower thermostability compared with ecFeSOD. Activity measurements and differential scanning calorimetry measurements revealed that the psychrophilic asFeSOD had a thermostability that was significantly higher than the optimal growth temperature of the host organism. The first structure of a cold-adapted superoxide dismutase (SOD): biochemical and structural characterization of iron SOD from Aliivibrio salmonicida.,Pedersen HL, Willassen NP, Leiros I Acta Crystallogr Sect F Struct Biol Cryst Commun. 2009 Feb 1;65(Pt, 2):84-92. Epub 2009 Jan 31. PMID:19193992 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Superoxide Dismutase

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