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Cited by 291

The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.

Sites of phosphorylation on pyruvate dehydrogenase from bovine kidney and heart

Yeaman, Stephen J., Hutcheson, Eldridge T., Roche, Thomas E., Pettit, Flora H., Brown, James R., Reed, Lester J., Watson, David C., Dixon, Gordon H.·1978·Biochemistry

Abstract

The highly purfied pyruvate dehydrogenase complex (EC 1.2.4.1) and uncomplexed pyruvate dehydrogenase from bovine kidney and heart mitochondria were phosphorylated and inactivated with pyruvate dehydrogenase kinase and [gamma-32P]ATP. Tryptic digestion of the phosphorylated pyruvate dehydrogenase yielded three phosphopeptides, a mono- (site 1) and a di- (sites 1 and 2) phosphorylated tetradecapeptide and a monophosphorylated nonapeptide (site 3). The amino acid sequences of the three phosphopeptides were established to be Tyr-His-Gly-His-Ser(P)-Met-Ser-Asn-Pro-Gly-Val-Ser-Tyr-Arg, Tyr-His-Gly-His-Ser(P)-Met-Ser-Asn-Pro-Gly-Val-Ser(P)-Tyr-Arg, and Tyr-Gly-Met-Gly-Thr-Ser(P)-Val-Glu-Arg. Phosphorylation proceeded markedly faster at site 1 than at sites 2 and 3, and phosphorylation at site 1 correlated closely with inactivation of pyruvate dehydrogenase. Complete inactivation of pyruvate dehydrogenase was associated with incorporation at site 1 of 1.0--1.6 mol of phosphoryl groups per mol of enzyme. Since pyruvate dehydrogenase is a tetramer (alpha2beta2) and since phosphorylation occurs only on the alpha subunit, the possibility of half-site reactivity is considered.

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Metadata

Authors
Yeaman, S. J., Hutcheson, E. T., Roche, T. E., Pettit, F. H., Brown, J. R., Reed, L. J., Watson, D. C., & Dixon, G. H.
Venue
Biochemistry
Published
1978-06-13
Volume
17
Issue
12
Pages
2364-2370
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2011646732
Cited by
291
References
15
FWCI
5.18
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Sites of phosphorylation on pyruvate dehydrogenase from bovine kidney and heart. https://app.cochat.ai/papers/10.1021/bi00605a017
The paper
Yeaman, S. J., Hutcheson, E. T., Roche, T. E., Pettit, F. H., Brown, J. R., Reed, L. J., Watson, D. C., & Dixon, G. H. (1978). Sites of phosphorylation on pyruvate dehydrogenase from bovine kidney and heart. Biochemistry. https://doi.org/10.1021/bi00605a017

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