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. 1979 Oct 10;548(1):161-5.
doi: 10.1016/0005-2728(79)90197-x.

Intramolecular electron transfer and binding constants in iron hexacyanide-cytochrome c complexes as studied by pulse radiolysis

Y Ilan, A Shafferman

Intramolecular electron transfer and binding constants in iron hexacyanide-cytochrome c complexes as studied by pulse radiolysis

Y Ilan et al. Biochim Biophys Acta. .

Abstract

Internal oxidation and reduction rates of horse cytochrome c in the complexes CII . Fe(III)(CN)6(3)- and CIII . Fe(II)(CN)6(4)-, are 4.6 . 10(4)s-1 and 3.3 . 10(2)s-1, respectively. The binding site of the iron hexacyanide ions on either CII or CIII are kinetically almost indistinguishable; binding constants range from 0.87 . 10(3) to 2 . 10(3)M-1. The present pulse radiolytic kinetic data is compared with that from NMR, T-jump and equilibrium dialysis studies.

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