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  • Title: Interaction of ferredoxin with ferredoxin:NADP reductase: effects of chemical modification of ferredoxin.
    Author: Vieira BJ, Davis DJ.
    Journal: Arch Biochem Biophys; 1986 May 15; 247(1):140-6. PubMed ID: 3707138.
    Abstract:
    Chemical modification studies have been conducted on spinach ferredoxin to determine the nature of the groups on ferredoxin involved in its interaction with its reaction partners. Modification of a limited number (three or four) carboxyl groups or of the single histidine residue resulted in a decreased ability of ferredoxin to participate in NADP photoreduction but not in cytochrome c photoreduction, suggesting that these groups may be involved in interaction with ferredoxin:NADP reductase but are not involved in interaction with the reducing side of Photosystem I. In contrast, modification of amino groups or the single arginine residue on ferredoxin had little effect on the ability of ferredoxin to participate in NADP photoreduction, suggesting these groups are not involved in the interaction of ferredoxin with either ferredoxin:NADP reductase or the reducing side of Photosystem I. Attempts to modify tyrosine residues on ferredoxin resulted in destruction of the iron-sulfur center of the protein.
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