| Literature DB >> 1249069 |
T L Poulos, R A Alden, S T Freer, J J Birktoft, J Kraut.
Abstract
1. A detailed study of cytochrome C oxidse activity with Keilin-Hartree particles and purified beef heart enzyme, at low ionic strength and low cytochrome C concentrations, showed biphasic kinetics with apparent Km1 = 5 x 10(-8) M, and apparent Km2 = 0.35 to 1.0 x 10(-6) M. Direct binding studies with purified oxidase, phospholipid-containing as well as phospholipid-depleted, demonstrated two sites of interaction of cytochrome c with the enzyme, with KD2 less than or equal to 10(-7) M, and KD2 = 10(-6) M. 2...Entities:
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Year: 1976 PMID: 1249069
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157