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  • Title: Plausible structure of the iron-molybdenum cofactor of nitrogenase.
    Author: Madden MS, Krezel AM, Allen RM, Ludden PW, Shah VK.
    Journal: Proc Natl Acad Sci U S A; 1992 Jul 15; 89(14):6487-91. PubMed ID: 1631147.
    Abstract:
    A plausible structure of the iron-molybdenum cofactor of nitrogenase [reduced ferredoxin:dinitrogen oxidoreductase (ATP-hydrolyzing), EC 1.18.6.1] is presented based on altered substrate reduction properties of dinitrogenase containing homocitrate analogs within the cofactor. Alterations on each carbon of the four-carbon homocitrate backbone were correlated with altered substrate reduction properties of dinitrogenase containing these analogs. Altered substrate reduction properties are the basis for a model in which homocitrate is oriented about two cubane metal clusters.
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