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EC Number Metals/Ions Commentary Reference
Display the word mapDisplay the reaction diagram Show all sequences 1.8.7.2Fe2+ ferredoxin:thioredoxin reductase is a [4Fe-4S] protein 703527
Display the word mapDisplay the reaction diagram Show all sequences 1.8.7.2Fe2+ nature, properties, and function of the Fe-S cluster in spinach FTR, overview. [4Fe-4S]2+ cluster covalently attached through a cluster sulfide to a cysteine-based thiyl radical formed on one of the active-site thiols, and at least partial cluster oxidation to the [4Fe-4S]3+ state. Proposed canonical structures for the Fe-S cluster in N-ethylmaleimide-modified spinach FTR, overview. Detailed spectroscopic analysis 702192
Display the word mapDisplay the reaction diagram Show all sequences 1.8.7.2Iron presence of an S = 0 [4Fe-4S]2+ cluster with complete cysteinyl-S coordination that cannot be reduced at potentials down to -650 mV, but can be oxidized by ferricyanide to an S = 1/2 [4Fe-4S]3+ state. The midpoint potential for the [4Fe-4S]3+/2+ couple is estimated to be +420 mV versus NHE. Results argue against a role for the cluster in mediating electron transport from ferredoxin to the active-site disulfide and suggest an alternative role for the cluster in stabilizing the one-electron-reduced intermediate. A mechanistic scheme is proposed involving sequential one-electron redox processes with the role of the [4Fe-4S]2+ cluster being to stabilize the thiyl radical formed by the initial one-electron reduction of the active-site disulfide 702192
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