oxidation-reduction titrations of cytochromes c-550 ( acidic ) and c-550 ( basic ) showed them to exhibit nernst values of n = 1 , with single redox centres in the cytochromes , and to have midpoint redox potentials at ph 7.0 ( em,7 ) of 290 and 260 mv , respectively .
C0030012
redox
C0010798
cytochromes