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  • Title: Kidney and adrenal mitochondria contain two forms of NADPH-adrenodoxin reductase-dependent iron-sulfur proteins. Isolation of the two porcine renal ferredoxins.
    Author: Driscoll WJ, Omdahl JL.
    Journal: J Biol Chem; 1986 Mar 25; 261(9):4122-5. PubMed ID: 2419339.
    Abstract:
    Two NADPH-adrenodoxin reductase-dependent iron-sulfur proteins were detected in both porcine kidney and bovine adrenal mitochondria by using high resolution polyacrylamide electrophoresis. Adrenodoxin (Mr = 12,000) constituted the major ferredoxin activity in adrenal mitochondria and a similarly sized protein (Mr = 11,500) was isolated as the major renal ferredoxin activity. A second, higher molecular weight ferredoxin was observed in both adrenal (Mr = 13,300) and kidney (Mr = 13,000) mitochondria. The two renal ferredoxins were isolated by the use of ion exchange, gel exclusion, and preparative electrophoretic techniques. An absorption spectrum typical of [2Fe-2S] ferredoxins was obtained for each protein; however, the larger renal molecule had an unusually high 276 nm absorbance. Immunologic studies revealed a significant degree of antigenic commonality between the two renal proteins as well as specific cross-reactivity of adrenodoxin with antiserum raised against the renal proteins. A possible precursor-product relationship between the paired renal and adrenal ferredoxins is discussed.
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