Title : Interaction domain for the reaction of cytochrome c with the radical and the oxyferryl heme in cytochrome c peroxidase compound I.

Pub. Date : 1994 Jul 26

PMID : 8038158






10 Functional Relationships(s)
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1 Interaction domain for the reaction of cytochrome c with the radical and the oxyferryl heme in cytochrome c peroxidase compound I. Site-directed mutants of cytochrome c peroxidase (CcP) were created to modify the interaction domain between CcP and yeast iso-1-cytochrome c (yCC) seen in the crystal structure of the CcP-yCC complex [Pelletier & Kraut (1992) Science 258, 1748-1755]. Adenosine Monophosphate cytochrome-c peroxidase Saccharomyces cerevisiae S288C
2 Interaction domain for the reaction of cytochrome c with the radical and the oxyferryl heme in cytochrome c peroxidase compound I. Site-directed mutants of cytochrome c peroxidase (CcP) were created to modify the interaction domain between CcP and yeast iso-1-cytochrome c (yCC) seen in the crystal structure of the CcP-yCC complex [Pelletier & Kraut (1992) Science 258, 1748-1755]. Adenosine Monophosphate cytochrome-c peroxidase Saccharomyces cerevisiae S288C
3 Interaction domain for the reaction of cytochrome c with the radical and the oxyferryl heme in cytochrome c peroxidase compound I. Site-directed mutants of cytochrome c peroxidase (CcP) were created to modify the interaction domain between CcP and yeast iso-1-cytochrome c (yCC) seen in the crystal structure of the CcP-yCC complex [Pelletier & Kraut (1992) Science 258, 1748-1755]. Adenosine Monophosphate cytochrome-c peroxidase Saccharomyces cerevisiae S288C
4 In the crystalline CcP-yCC complex, two acidic regions of CcP contact lysine residues on yCC. Lysine cytochrome-c peroxidase Saccharomyces cerevisiae S288C
5 In the crystalline CcP-yCC complex, two acidic regions of CcP contact lysine residues on yCC. Lysine cytochrome-c peroxidase Saccharomyces cerevisiae S288C
6 Stopped-flow experiments carried out in 310 mM ionic strength buffer at pH 7 revealed that yCC initially reduced the indole radical on Trp-191 of the parent CcP compound I with a bimolecular rate constant ka = 2.5 x 10(8) M-1 s-1. indole radical cytochrome-c peroxidase Saccharomyces cerevisiae S288C
7 Stopped-flow experiments carried out in 310 mM ionic strength buffer at pH 7 revealed that yCC initially reduced the indole radical on Trp-191 of the parent CcP compound I with a bimolecular rate constant ka = 2.5 x 10(8) M-1 s-1. Tryptophan cytochrome-c peroxidase Saccharomyces cerevisiae S288C
8 CcP mutants D34N and E290N that are closest to a complementary yCC lysine residue in the crystalline CcP-yCC complex gave the lowest values for ka and kb, which were 25-50% of the values of the CcP parent. Lysine cytochrome-c peroxidase Saccharomyces cerevisiae S288C
9 CcP mutants D34N and E290N that are closest to a complementary yCC lysine residue in the crystalline CcP-yCC complex gave the lowest values for ka and kb, which were 25-50% of the values of the CcP parent. Lysine cytochrome-c peroxidase Saccharomyces cerevisiae S288C
10 CcP mutants D34N and E290N that are closest to a complementary yCC lysine residue in the crystalline CcP-yCC complex gave the lowest values for ka and kb, which were 25-50% of the values of the CcP parent. Lysine cytochrome-c peroxidase Saccharomyces cerevisiae S288C