A temperature-jump study of the reaction between azurin and cytochrome <i>c</i> oxidase from <i>Pseudomonas aeruginosa</i>

Abstract

Temperature-jump studies on the electron-transfer reaction between azurin and cytochrome c-551 clearly reveal two chemical relaxations. The amplitudes of these relaxation processes have identical spectral distributions, but the relaxation times show different dependences on the reactant concentrations. These findings are discussed in terms of possible models.