Major Mo(V) EPR signature of Rhodobacter sphaeroides periplasmic nitrate reductase arising from a dead-end species that activates upon reduction. Relation to other molybdoenzymes from the DMSO reductase family.

Abstract excerpt

Enzymes of the DMSO reductase family use a mononuclear Mo-bis(molybdopterin) cofactor (MoCo) to catalyze a variety of oxo-transfer reactions. Much functional information on nitrate reductase, one of the most studied members of this family, has been gained from EPR spectroscopy, but this technique is not always conclusive because the signature of the MoCo is heterogeneous, and which signals correspond to active...

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