3a52

Crystal structure of cold-active alkailne phosphatase from psychrophile Shewanella sp.

spinqualitylabelsall models 3a52, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3a52 is a 2 chain structure with sequence from Shewanella. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MG, SO4, ZN Gene: scap (Shewanella) 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 crystal structure of a cold-active alkaline phosphatase from a psychrophile, Shewanella sp. (SCAP), was solved at 2.2 A. A refined model showed a homodimer with six metal-ligand sites. The arrangement of the catalytic residues resembled those of alkaline phosphatases (APs), suggesting that the reaction mechanism of SCAP was fundamentally identical to those of other APs. SCAP had two distinct structural features: (i) a loop with Arg122 that bound to the phosphate moiety of the substrate suffered no constraints from the linkage to other secondary structures, and (ii) Mg3-ligand His109 was considered to undergo repulsive effect with neighboring Trp228. The local flexibility led by these features might be an important factor in the high catalytic efficiency of SCAP at low temperatures. Crystal structure of cold-active alkaline phosphatase from the psychrophile Shewanella sp.,Tsuruta H, Mikami B, Higashi T, Aizono Y Biosci Biotechnol Biochem. 2010 Jan;74(1):69-74. Epub 2010 Jan 7. PMID:20057143 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Alkaline phosphatase

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