1b0p

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{{STRUCTURE_1b0p| PDB=1b0p | SCENE= }}
{{STRUCTURE_1b0p| PDB=1b0p | SCENE= }}
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'''CRYSTAL STRUCTURE OF PYRUVATE-FERREDOXIN OXIDOREDUCTASE FROM DESULFOVIBRIO AFRICANUS'''
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===CRYSTAL STRUCTURE OF PYRUVATE-FERREDOXIN OXIDOREDUCTASE FROM DESULFOVIBRIO AFRICANUS===
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==Overview==
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Oxidative decarboxylation of pyruvate to form acetyl-coenzyme A, a crucial step in many metabolic pathways, is carried out in most aerobic organisms by the multienzyme complex pyruvate dehydrogenase. In most anaerobes, the same reaction is usually catalyzed by a single enzyme, pyruvate:ferredoxin oxidoreductase (PFOR). Thus, PFOR is a potential target for drug design against certain anaerobic pathogens. Here, we report the crystal structures of the homodimeric Desulfovibrio africanus PFOR (data to 2.3 A resolution), and of its complex with pyruvate (3.0 A resolution). The structures show that each subunit consists of seven domains, one of which affords protection against oxygen. The thiamin pyrophosphate (TPP) cofactor and the three [4Fe-4S] clusters are suitably arranged to provide a plausible electron transfer pathway. In addition, the PFOR-pyruvate complex structure shows the noncovalent fixation of the substrate before the catalytic reaction.
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(as it appears on PubMed at http://www.pubmed.gov), where 10048931 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10048931}}
==About this Structure==
==About this Structure==
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[[Category: Pyruvate catabolism]]
[[Category: Pyruvate catabolism]]
[[Category: Tpp-dependent enzyme]]
[[Category: Tpp-dependent enzyme]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 17:59:47 2008''

Revision as of 14:59, 30 June 2008

Image:1b0p.png

Template:STRUCTURE 1b0p

CRYSTAL STRUCTURE OF PYRUVATE-FERREDOXIN OXIDOREDUCTASE FROM DESULFOVIBRIO AFRICANUS

Template:ABSTRACT PUBMED 10048931

About this Structure

1B0P is a Single protein structure of sequence from Desulfovibrio africanus. Full crystallographic information is available from OCA.

Reference

Crystal structures of the key anaerobic enzyme pyruvate:ferredoxin oxidoreductase, free and in complex with pyruvate., Chabriere E, Charon MH, Volbeda A, Pieulle L, Hatchikian EC, Fontecilla-Camps JC, Nat Struct Biol. 1999 Feb;6(2):182-90. PMID:10048931

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