On the enzymic mechanism of oxidative phosphorylation.
نویسندگان
چکیده
منابع مشابه
Studies on the Mechanism of Oxidative Phosphorylation
Kinetic and nucleotide binding studies have shown that submitochondrial particles from bovine heart possess three exchangeable binding sites for ADP or GDP. In order of decreasing affinity at neutral pH, these sites will be referred to as sites I, II, and III, and their respective dissociation constants as KI, KIr, and KIII. In oxidative phosphorylation experiments in the presence of saturating...
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The kinetics of the synthesis of ATP from ADP and Pi by beef heart submitochondrial particles were examined. When Pi was the variable substrate positive cooperativity was observed, whereas if ADP was varied, linear double reciprocal plots were obtained. The analog of Pi, thiophosphate, was a noncompetitive inhibitor of ATP synthesis with respect to ADP, while the analog of ADP, AMP (CH2)P, was ...
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Incubation of 6-phosphogluconate dehydrogenase from Candida utilis with either acetyl phosphate, 1,3-diphosphoglycerate or carbamoyl phosphate results in the phosphorylation of the protein. The binding of one phosphate residue per enzyme subunit does not affect significantly the kinetic properties, but makes the enzyme less reactive toward thiol reagents, trypsin and pyridoxal 5'-phosphate. We ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1982
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.79.4.1064