1r4u

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{{STRUCTURE_1r4u| PDB=1r4u | SCENE= }}
{{STRUCTURE_1r4u| PDB=1r4u | SCENE= }}
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'''URATE OXIDASE FROM ASPERGILLUS FLAVUS COMPLEXED WITH ITS INHIBITOR OXONIC ACID'''
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===URATE OXIDASE FROM ASPERGILLUS FLAVUS COMPLEXED WITH ITS INHIBITOR OXONIC ACID===
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==Overview==
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High-resolution X-ray structures of the complexes of Aspergillus flavus urate oxidase (Uox) with three inhibitors, 8-azaxanthin (AZA), 9-methyl uric acid (MUA) and oxonic acid (OXC), were determined in an orthorhombic space group (I222). In addition, the ligand-free enzyme was also crystallized in a monoclinic form (P2(1)) and its structure determined. Higher accuracy in the three new enzyme-inhibitor complex structures (Uox-AZA, Uox-MUA and Uox-OXC) with respect to the previously determined structure of Uox-AZA (PDB code 1uox) leads to a reversed position of the inhibitor in the active site of the enzyme. The corrected anchoring of the substrate (uric acid) allows an improvement in the understanding of the enzymatic mechanism of urate oxidase.
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(as it appears on PubMed at http://www.pubmed.gov), where 14993669 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14993669}}
==About this Structure==
==About this Structure==
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[[Category: Tunnel-shaped protein]]
[[Category: Tunnel-shaped protein]]
[[Category: Uric acid degradation]]
[[Category: Uric acid degradation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:04:35 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 04:49:46 2008''

Revision as of 01:49, 29 July 2008

Image:1r4u.png

Template:STRUCTURE 1r4u

URATE OXIDASE FROM ASPERGILLUS FLAVUS COMPLEXED WITH ITS INHIBITOR OXONIC ACID

Template:ABSTRACT PUBMED 14993669

About this Structure

1R4U is a Single protein structure of sequence from Aspergillus flavus. Full crystallographic information is available from OCA.

Reference

Complexed and ligand-free high-resolution structures of urate oxidase (Uox) from Aspergillus flavus: a reassignment of the active-site binding mode., Retailleau P, Colloc'h N, Vivares D, Bonnete F, Castro B, El-Hajji M, Mornon JP, Monard G, Prange T, Acta Crystallogr D Biol Crystallogr. 2004 Mar;60(Pt 3):453-62. Epub 2004, Feb 25. PMID:14993669

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