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  • Title: Ferredoxin-Sepharose 4B as a tool for the purification of ferredoxin-NADP+ reductase.
    Author: Shin M, Oshino R.
    Journal: J Biochem; 1978 Feb; 83(2):357-61. PubMed ID: 632227.
    Abstract:
    Ferredoxin immobilized on Sepharose 4B was prepared by reaction of CNBr-Sepharose 4B with spinach ferredoxin. The ferredoxin-Sepharose 4B conjugated ferredoxin-NADP+ reductase (NADPH: ferredoxin oxidoreductase, [EC 1.6.7.1]) in dilute buffer solution and released it in high salt concentrations. A novel method of preparation for the reductase was established by a combination of affinity adsorption on the ferredoxin-Sepharose 4B column with usual purification procedures. It was found using the new method, that there are two forms of ferredoxin-NADP+ reductase, FNR I and FNR II, in spinach. Comparative studies of the two components suggest that FNR I may be a dimer of FNR II.
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