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  • Title: Predicted structure and possible ionmotive mechanism of the sodium-linked NADH-ubiquinone oxidoreductase of Vibrio alginolyticus.
    Author: Rich PR, Meunier B, Ward FB.
    Journal: FEBS Lett; 1995 Nov 13; 375(1-2):5-10. PubMed ID: 7498478.
    Abstract:
    Two groups have now published sequences of the six genes contained in the operon coding for the sodium-linked NADH-ubiquinone oxidoreductase of Vibrio alginolyticus. Sequence analyses indicate that this enzyme is unrelated to other known respiratory NADH dehydrogenases. A search for cofactor motifs suggests that the enzyme contains only one FAD, a ferredoxin-type iron sulphur centre, and the NADH-binding site. These are all located on NqrF, a subunit that can be recognized as a new member of a large diverse family of NAD(P)H-oxidizing flavoenzymes. A possible model of ion-coupling is presented, based upon this new information.
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