1h0h
From Proteopedia
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==Overview== | ==Overview== | ||
| - | Desulfovibrio gigas formate dehydrogenase is the first representative of a | + | Desulfovibrio gigas formate dehydrogenase is the first representative of a tungsten-containing enzyme from a mesophile that has been structurally characterized. It is a heterodimer of 110 and 24 kDa subunits. The large subunit, homologous to E. coli FDH-H and to D. desulfuricans nitrate reductase, harbors the W site and one [4Fe-4S] center. No small subunit ortholog containing three [4Fe-4S] clusters has been reported. The structural homology with E. coli FDH-H shows that the essential residues (SeCys158, His159, and Arg407) at the active site are conserved. The active site is accessible via a positively charged tunnel, while product release may be facilitated, for H(+) by buried waters and protonable amino acids and for CO(2) through a hydrophobic channel. |
==About this Structure== | ==About this Structure== | ||
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[[Category: Desulfovibrio gigas]] | [[Category: Desulfovibrio gigas]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
| - | [[Category: Raaijmakers, H | + | [[Category: Raaijmakers, H C.A.]] |
[[Category: 2MD]] | [[Category: 2MD]] | ||
[[Category: CA]] | [[Category: CA]] | ||
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[[Category: tungsten selenium formate dehydrogenase]] | [[Category: tungsten selenium formate dehydrogenase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:56:02 2008'' |
Revision as of 10:56, 21 February 2008
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TUNGSTEN CONTAINING FORMATE DEHYDROGENASE FROM DESULFOVIBRIO GIGAS
Overview
Desulfovibrio gigas formate dehydrogenase is the first representative of a tungsten-containing enzyme from a mesophile that has been structurally characterized. It is a heterodimer of 110 and 24 kDa subunits. The large subunit, homologous to E. coli FDH-H and to D. desulfuricans nitrate reductase, harbors the W site and one [4Fe-4S] center. No small subunit ortholog containing three [4Fe-4S] clusters has been reported. The structural homology with E. coli FDH-H shows that the essential residues (SeCys158, His159, and Arg407) at the active site are conserved. The active site is accessible via a positively charged tunnel, while product release may be facilitated, for H(+) by buried waters and protonable amino acids and for CO(2) through a hydrophobic channel.
About this Structure
1H0H is a Protein complex structure of sequences from Desulfovibrio gigas with , , , , and as ligands. Known structural/functional Site: . Full crystallographic information is available from OCA.
Reference
Gene sequence and the 1.8 A crystal structure of the tungsten-containing formate dehydrogenase from Desulfovibrio gigas., Raaijmakers H, Macieira S, Dias JM, Teixeira S, Bursakov S, Huber R, Moura JJ, Moura I, Romao MJ, Structure. 2002 Sep;10(9):1261-72. PMID:12220497
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