title: A four-iron ferredoxin from Desulfovibrio desulfuricans.
abstract: Ferredoxin from Desulfovibrio desulfuricans was isolated, purified and crystallized. It contains four iron atoms and four sulphido or ;acid-labile' sulphur atoms for a molecule of 6000 daltons. The absorption spectrum in the u.v.-visible region and the electron-paramagnetic-resonance signals of the reduced protein are similar to those observed for other four-iron ferredoxins. The amino acid composition is different from that of Desulfovibrio gigas ferredoxin. The redox potential of -0.33V at pH7.0 was determined by dye techniques.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D003901:Desulfovibrio / Q000032:analysis*; D004589:Electrophoresis, Disc; D005288:Ferredoxins / Q000302:isolation & purification*; D007501:Iron / Q000032:analysis; D008970:Molecular Weight; D013057:Spectrum Analysis; D013455:Sulfur / Q000032:analysis
chemical_list: D000596:Amino Acids; D005288:Ferredoxins; D013455:Sulfur; D007501:Iron