1v7x: Difference between revisions

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{{STRUCTURE_1v7x|  PDB=1v7x  |  SCENE=  }}  
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'''Crystal structure of Vibrio proteolyticus chitobiose phosphorylase in complex with GlcNAc and sulfate'''
===Crystal structure of Vibrio proteolyticus chitobiose phosphorylase in complex with GlcNAc and sulfate===




==Overview==
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Vibrio proteolyticus chitobiose phosphorylase (ChBP) belongs to glycosyl transferase family 36 (GT-36), and catalyzes the reversible phosphorolysis of chitobiose into alpha-GlcNAc-1-phosphate and GlcNAc with inversion of the anomeric configuration. As the first known structures of a GT-36 enzyme, we determined the crystal structure of ChBP in a ternary complex with GlcNAc and SO(4). It is also the first structures of an inverting phosphorolytic enzyme in a complex with a sugar and a sulfate ion, and reveals a pseudo-ternary complex structure of enzyme-sugar-phosphate. ChBP comprises a beta sandwich domain and an (alpha/alpha)(6) barrel domain, constituting a distinctive structure among GT families. Instead, it shows significant structural similarity with glycoside hydrolase (GH) enzymes, glucoamylases (GH-15), and maltose phosphorylase (GH-65) in clan GH-L. The structural similarity reported here, together with distant sequence similarities between ChBP and GHs, led to the reclassification of family GT-36 into a novel GH family, namely GH-94.
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==About this Structure==
==About this Structure==
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[[Category: Wakagi, T.]]
[[Category: Wakagi, T.]]
[[Category: Beta-sandwich]]
[[Category: Beta-sandwich]]
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Revision as of 02:30, 28 July 2008

File:1v7x.png

Template:STRUCTURE 1v7x

Crystal structure of Vibrio proteolyticus chitobiose phosphorylase in complex with GlcNAc and sulfate

Template:ABSTRACT PUBMED 15274915

About this Structure

1V7X is a Single protein structure of sequence from Vibrio proteolyticus. Full crystallographic information is available from OCA.

Reference

Chitobiose phosphorylase from Vibrio proteolyticus, a member of glycosyl transferase family 36, has a clan GH-L-like (alpha/alpha)(6) barrel fold., Hidaka M, Honda Y, Kitaoka M, Nirasawa S, Hayashi K, Wakagi T, Shoun H, Fushinobu S, Structure. 2004 Jun;12(6):937-47. PMID:15274915

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