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Science 16 February 1973:
Vol. 179. no. 4074, pp. 680 - 682
DOI: 10.1126/science.179.4074.680
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Articles

Reaction of Hydrated Electrons with Ferricytochrome c

Norman N. Lichtin 1, Avigdor Shafferman 1, and Gabriel Stein 1

1 Department of Physical Chemistry, Hebrew University, Jerusalem, Israel

The reaction of ferricytochrome c with hydrated electrons produced at pH 6.8 by radiolysis with electron pulses lasting 50 to 1000 nanoseconds has a specific rate constant of 5.5 x 1010 liter mole-1 sec-1 for the formation of the primary adduct. By using appropriate wavelengths, another fast, consecutive process was demonstrated, with the pure first order rate constant 1.0 x 105 sec-1. Its characteristics agree with it being an intramolecular process within the enzyme. Approximately 50 percent of all electrons which add to ferricytochrome c end in forming ferrocytochrome c.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Reduction of Ferricytochrome c by Some Free Radical Agents.
A. Shafferman and G. Stein (1974)
Science 183, 428-430
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