Primary Citation of Related Structures: 2PCB, 2PCC
PubMed Abstract:
The crystal structure of a 1:1 complex between yeast cytochrome c peroxidase and yeast iso-1-cytochrome c was determined at 2.3 A resolution. This structure reveals a possible electron transfer pathway unlike any previously proposed for this extensively studied redox pair ...
The crystal structure of a 1:1 complex between yeast cytochrome c peroxidase and yeast iso-1-cytochrome c was determined at 2.3 A resolution. This structure reveals a possible electron transfer pathway unlike any previously proposed for this extensively studied redox pair. The shortest straight line between the two hemes closely follows the peroxidase backbone chain of residues Ala194, Ala193, Gly192, and finally Trp191, the indole ring of which is perpendicular to, and in van der Waals contact with, the peroxidase heme. The crystal structure at 2.8 A of a complex between yeast cytochrome c peroxidase and horse heart cytochrome c was also determined. Although crystals of the two complexes (one with cytochrome c from yeast and the other with cytochrome c from horse) grew under very different conditions and belong to different space groups, the two complex structures are closely similar, suggesting that cytochrome c interacts with its redox partners in a highly specific manner.
Related Citations:
X-Ray Structures of Recombinant Yeast Cytochrome C Peroxidase and Three Heme-Cleft Mutants Prepared by Site-Directed Mutagenesis Wang, J., Mauro, J.M., Edwards, S.L., Oatley, S.J., Fishel, L.A., Ashford, V.A., Xuong, N.-H., Kraut, J. (1990) Biochemistry 29: 7160
High-Resolution Three Dimensional Structure of Horse Heart Cytochrome C Bushnell, G.W., Louie, G.V., Brayer, G.D. (1990) J Mol Biol 214: 585
Co-Crystals of Yeast Cytochrome C Peroxidase and Horse Heart Cytochrome C Poulos, T.L., Sheriff, S., Howard, A.J. (1987) J Biol Chem 262: 13881
Organizational Affiliation:
Department of Chemistry, University of California, San Diego, La Jolla 92093-0317.
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