The Molybdenum Site of Nitrogenase . Preliminary Structural Evidence from X-Ray Absorption Spectroscopy

Abstract

One of the two protein components of the nitrogenase enzyme system (the so-called MoFe protein) contains two Mo atoms and 24 -32 Fe atoms per 220-270 000 molecular weight. Despite many hypotheses about the Mo site and its involvement in dinitrogen reduction, there has been no spectroscopic means of unambiguously probing the state of Mo. I n this paper, the… (More)

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