1pzb | pdb_00001pzb

THE CRYSTAL STRUCTURES OF REDUCED PSEUDOAZURIN FROM ALCALIGENES FAECALIS S-6 AT TWO PH VALUES

spinqualitylabelsall models 1pzb, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1pzb is a 1 chain structure with sequence from Alcfa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CU Related: 1pza, 1paz Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [AZUP_ALCFA] This soluble electron transfer copper protein is required for the inactivation of copper-containing nitrite reductase in the presence of oxygen. Serves as a direct electron donor to the nitrite reductase. 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 structures of the reduced (Cu1+) blue-copper protein pseudoazurin from Alcaligenes faecalis strain S-6 are refined at pH 7.8 and 4.4 using X-ray diffraction data to 1.8 A resolution. The final R-factors for the high and low pH structures are 0.178 and 0.177, respectively. Comparing the reduced pseudoazurin at pH 7.8 with the oxidised (Cu2+) molecule, small changes are observed in the vicinity of the copper site and on the protein surface. At pH 4.4 the copper substituent imidazole of His81 rotates away from the metal with a concurrent movement of the latter towards the plane of the remaining three ligands (S gamma-Cys78, N delta 1-His40 and S delta-Met86) thus the geometry of the copper site becomes planar trigonal. The crystal structures of reduced pseudoazurin from Alcaligenes faecalis S-6 at two pH values.,Vakoufari E, Wilson KS, Petratos K FEBS Lett. 1994 Jun 27;347(2-3):203-6. PMID:8034003 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pseudoazurin

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