1b4n

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE

spinqualitylabelsall models 1b4n, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1b4n is a 4 chain structure with sequence from Pyrococcus furiosus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, GUA, PTE, SF4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Crystal structures of formaldehyde ferredoxin oxidoreductase (FOR), a tungstopterin-containing protein from the hyperthermophilic archaeon Pyrococcus furiosus, have been determined in the native state and as a complex with the inhibitor glutarate at 1.85 A and 2. 4 A resolution, respectively. The native structure was solved by molecular replacement using the structure of the homologous P. furiosus aldehyde ferredoxin oxidoreductase (AOR) as the initial model. Residues are identified in FOR that may be involved in either the catalytic mechanism or in determining substrate specificity. The binding site on FOR for the physiological electron acceptor, P. furiosus ferredoxin (Fd), has been established from an FOR-Fd cocrystal structure. Based on the arrangement of redox centers in this structure, an electron transfer pathway is proposed that begins at the tungsten center, leads to the (4Fe:4S) cluster of FOR via one of the two pterins that coordinate the tungsten, and ends at the (4Fe:4S) cluster of ferredoxin. This pathway includes two residues that coordinate the (4Fe:4S) clusters, Cys287 of FOR and Asp14 of ferredoxin. Similarities in the active site structures between FOR and the unrelated molybdoenzyme aldehyde oxidoreductase from Desulfovibrio gigas suggest that both enzymes utilize a common mechanism for aldehyde oxidation. Formaldehyde ferredoxin oxidoreductase from Pyrococcus furiosus: the 1.85 A resolution crystal structure and its mechanistic implications.,Hu Y, Faham S, Roy R, Adams MW, Rees DC J Mol Biol. 1999 Feb 26;286(3):899-914. PMID:10024458 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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