Interaction of iron-sulfur flavoprotein with oxygen and hydrogen peroxide.


The dimeric iron-sulfur flavoprotein (Isf) from Methanosarcina thermophila contains one 4Fe-4S center and one FMN per monomer, and is the prototype of a family widely distributed among strictly anaerobic prokaryotes. Although Isf is able to oxidize ferredoxin, the physiological electron acceptor is unknown; thus, the ability of Isf to reduce O2 and H2O2 was… (More)


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