Effect of pyridoxal phosphate on the formation of cytochrome c1-c and cytochrome c-cytochrome oxidase complexes
Kim, C.H.; King, T.E.
Biochemistry International 24(2): 255-262
1991
ISSN/ISBN: 0158-5231 PMID: 1656982 Document Number: 387084
The cytochrome c-cytochrome oxidase complex is formed when c reacts with cytochrome oxidase (Kuboyama et al. (1962) Biochem. Biophys. Res. Commun. 9, 534) and the cytochrome c1-cytochrome c complex is formed when c reacts with cytochrome c1 in the presence of the hinge protein (Kim, C.H. and King, T.E. (1981) Biochem. Biophys. Res. Commun. 101, 607). Both complexes are considered to be possible intermediates in electron transfer reaction between these cytochromes. Triply substituted modified cytochrome c by pyridoxal phosphate at lysine residues (Lys-79, 86 and one to be identified) abolishes both complex formations and electron transfer activity with succinate cytochrome c reductase or cytochrome oxidase.