Titlebook: Biological Nitrogen Fixation for the 21st Century; Proceedings of the 1 C. Elmerich,A. Kondorosi,W. E. Newton Conference proceedings 1998 S

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Een gemengde kleur aan de voeten,cond model is now preferred and the structural differences have been rationalized by different redox states having different structural P-cluster forms with the first structure solved on crystals in two (or more) states. The structure and composition of FeMo-cofactor have not been items of dispute.

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Janine Kleemann,Kirsten Neumann,Antje Zehme - but not all - of the gene products required for maturation of the Mo-dependent enzyme are also required for maturation of the alternative nitrogenases (Kennedy, Dean, 1992). How the expression of these various genes is controlled to permit the accumulation of the appropriate form of nitrogenase

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https://doi.org/10.1007/978-3-662-62195-0e argument that their structures are similar to that of FeMo-co is based on the ability of isolated FeV-co and FeFe-co to replace FeMo-co in the .-encoded dinitrogenase proteins When apodinitrogenase protein (NifDK, lacking FeMo-co but containing the P clusters) is reconstituted with FeV-co or FeFe-

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https://doi.org/10.1007/978-3-642-61404-0 versus high quantum yield of fluorescence for inactive photodonors. All studied photodonors can inhibit electron transfer within nitrogenase following substrate reduction at high dye concentration. For 4′,5′-dibromofluorescein this concentration is 0,1 mM, for other dyes it is less. Under the same

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https://doi.org/10.1007/978-3-642-61404-0ermed NifB-cofactor (NifB-co). The requirement for NifB in the . FeMo-co synthesis assay is satisfied by the addition of NifB-co (Shah et al, 1994) which is an iron-sulfur precursor of FeMo-co. Unfortunately all attempts to gain insights into the NifB-co by various spectroscopic techniques (EPR, MCD

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Progress in Nitrogenase-Related Researchcond model is now preferred and the structural differences have been rationalized by different redox states having different structural P-cluster forms with the first structure solved on crystals in two (or more) states. The structure and composition of FeMo-cofactor have not been items of dispute.

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