Article
Use of a photoactivated ruthenium dimer complex to measure electron transfer between the Rieske iron-sulfur protein and cytochrome c(1) in the cytochrome bc(1) complex.
Biochemistry - 18 Apr 2000
Sadoski R C, Engstrom G, Tian H, Zhang L, Yu C A, Yu L, Durham B, Millett F
Abstract excerpt
Electron transfer between the Rieske iron-sulfur protein (Fe(2)S(2)) and cytochrome c(1) was studied using the ruthenium dimer, Ru(2)D, to either photoreduce or photooxidize cytochrome c(1) within 1 micros. Ru(2)D has a charge of +4, which allows it to bind with high affinity to the cytochrome bc(1) complex. Flash photolysis of a solution containing beef cytochrome bc(1), Ru(2)D, and a sacrificial donor resulted...
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