Heme b in cytochrome b
5
Heme b
Half-cell reaction:
ferrocytochrome b ==> ferricytochrome b
+
+ e
-
Midpoint redox potential: E
m, pH 7
= -250 - +400 mV, depending on cytochrome
No. of electrons: z=1
No. of protons: n=0 or 1, depending on protein, pH, pK
©
Copyright
1996, Antony Crofts,
University of Illinois at Urbana-Champaign
,
a-crofts@uiuc.edu
