2fxl | pdb_00002fxl

Urate oxidase from aspergillus flavus complexed with allantoin

spinqualitylabelsall models 2fxl, resolution 1.76Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2fxl is a 1 chain structure with sequence from Aspfl. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 2AL NonStd Res: SAC Related: 1r4s, 1r4u, 1r51, 1r56 Gene: uaZ, uox (ASPFL) Activity: Factor independent urate hydroxylase, with EC number 1.7.3.3 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [URIC_ASPFL] Catalyzes the oxidation of uric acid to 5-hydroxyisourate, which is further processed to form (S)-allantoin. 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 Urate oxidase from Aspergillus flavus catalyzes the degradation of uric acid to [S]-allantoin through 5-hydroxyisourate as a metastable intermediate. The second degradation step is thought either catalyzed by another specific enzyme, or spontaneous. The structure of the enzyme was known at high resolution by X-ray diffraction of I222 crystals complexed with a purine-type inhibitor (8-azaxanthin). Analyzing the X-ray structure of urate oxidase treated with an excess of urate, the natural substrate, shows unexpectedly that the active site recaptures [S]-allantoin from the racemic end product of a second degradation step. Recapture of [S]-allantoin, the product of the two-step degradation of uric acid, by urate oxidase.,Gabison L, Chiadmi M, Colloc'h N, Castro B, El Hajji M, Prange T FEBS Lett. 2006 Apr 3;580(8):2087-91. Epub 2006 Mar 10. PMID:16545381 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Urate Oxidase

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