1obf

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{{STRUCTURE_1obf| PDB=1obf | SCENE= }}
{{STRUCTURE_1obf| PDB=1obf | SCENE= }}
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'''THE CRYSTAL STRUCTURE OF GLYCERALDEHYDE 3-PHOSPHATE DEHYDROGENASE FROM ALCALIGENES XYLOSOXIDANS AT 1.7 RESOLUTION.'''
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===THE CRYSTAL STRUCTURE OF GLYCERALDEHYDE 3-PHOSPHATE DEHYDROGENASE FROM ALCALIGENES XYLOSOXIDANS AT 1.7 RESOLUTION.===
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==Overview==
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The enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) from the Gram-negative denitrifying bacterial species Alcaligenes xylosoxidans was purified and crystallized as a contaminant protein during purification of nitrous oxide reductase. This is the first structure of a GAPDH from a denitrifying species. The crystal structure was solved at 1.7 A resolution by molecular replacement using the structure of GAPDH from Bacillus stearothermophilus as a starting model. The quality of the structure enabled the amino-acid sequence of the A. xylosoxidans GAPDH to be assigned. The structure is that of the apo-enzyme, lacking the NAD+ cofactor and with the active-site residue Cys154 oxidized. The global structure of the enzyme has a homotetrameric quaternary structure similar to that observed for its bacterial and eukaryotic counterparts. The essential role of Cys154 in the enzyme activity has been confirmed. In monomer O two half-occupancy sulfate ions were found at the active site, which are analogous to the substrate and the "attacking" phosphate seen in B. stearothermophilus. One half-occupancy sulfate ion is also located in the substrate-binding site of monomer P.
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(as it appears on PubMed at http://www.pubmed.gov), where 12777799 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12777799}}
==About this Structure==
==About this Structure==
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[[Category: Glycolytic pathway]]
[[Category: Glycolytic pathway]]
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 03:37:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 10:28:27 2008''

Revision as of 07:28, 28 July 2008

Image:1obf.png

Template:STRUCTURE 1obf

THE CRYSTAL STRUCTURE OF GLYCERALDEHYDE 3-PHOSPHATE DEHYDROGENASE FROM ALCALIGENES XYLOSOXIDANS AT 1.7 RESOLUTION.

Template:ABSTRACT PUBMED 12777799

About this Structure

1OBF is a Single protein structure of sequence from Achromobacter xylosoxidans. Full crystallographic information is available from OCA.

Reference

The structure of glyceraldehyde 3-phosphate dehydrogenase from Alcaligenes xylosoxidans at 1.7 A resolution., Antonyuk SV, Eady RR, Strange RW, Hasnain SS, Acta Crystallogr D Biol Crystallogr. 2003 May;59(Pt 5):835-42. Epub 2003, Apr 25. PMID:12777799

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