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Modelling the Electron‐Transfer Complex Between Aldehyde Oxidoreductase and Flavodoxin
Author(s) -
Krippahl Ludwig,
Palma P. Nuno,
Moura Isabel,
Moura José J. G.
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600418
Subject(s) - chemistry , flavodoxin , flavin group , oxidoreductase , cofactor , flavin adenine dinucleotide , molybdenum cofactor , electron transfer , aldehyde oxidase , stereochemistry , aldehyde , xanthine dehydrogenase , xanthine oxidase , enzyme , photochemistry , biochemistry , ferredoxin , catalysis
Three‐dimensional protein structures of the xanthine oxidase family show different solutions for the problem of transferring electrons between the flavin adenine dinucleotide (FAD) group and the molybdenum cofactor. In xanthine oxidase all the cofactors lie within domains of the same protein chain, whereas in CO dehydrogenase the Fe–S centres, FAD and Mo cofactors are enclosed in separate chains and the enzyme exists as a stable complex of all three. In aldehyde oxidoreductase, only Fe–S and Mo co‐factors are present in a single protein chain. Flavodoxin is docked to aldehyde oxidoreductase to mimic the flavin component on the intramolecular electron transfer chain of aanthine oxidase and CO dehydrogenase and, remarkably, the main features of the electron‐transfer pathway are observed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)