Sulfite reductase of Escherichia coli is a ferrisiderophore reductase.
A soluble ferrisiderophore reductase activity of Escherichia coli was purified to homogeneity and identified as the sulfite reductase. The pure enzyme catalyzes the reduction of ferric citrate, ferriaerobactin, ferrioxamin, ferricrocin, ferrichrome and ferrifusarinin by NADPH. Free flavins, riboflavin, FMN, FAD were absolutely required, suggesting that this activity resides in the flavin reductase activity of sulfite reductase.
Laboratoire d'Etudes Dynamiques et Structurales de la Sélectivité, Unité de Recherche Associée au Centre National de la Recherche Scientifique n. 332, Université Joseph Fourier, Grenoble, France.
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Coves
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Eschenbrenner
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Fontecave
D002845:Chromatography; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D017886:Durapatite; D004926:Escherichia coli / Q000201:enzymology*; D006882:Hydroxyapatites; D007700:Kinetics; D009247:NADH, NADPH Oxidoreductases / Q000302:isolation & purification / Q000378:metabolism*; D050862:Oxidoreductases Acting on Sulfur Group Donors / Q000302:isolation & purification / Q000378:metabolism*; D013379:Substrate Specificity
D006882:Hydroxyapatites; D017886:Durapatite; D009247:NADH, NADPH Oxidoreductases; C024253:ferrisiderophore reductase; D050862:Oxidoreductases Acting on Sulfur Group Donors