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Cited by 207

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Structure of a bacterial enzyme regulated by phosphorylation, isocitrate dehydrogenase.

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Hurley, J H, Thorsness, P E, Ramalingam, V, Helmers, N H, Koshland, D E, Stroud, R M·1989·Proceedings of the National Academy of Sciences

Abstract

The structure of isocitrate dehydrogenase [threo-DS-isocitrate: NADP+ oxidoreductase (decarboxylating), EC 1.1.1.42] from Escherichia coli has been solved and refined at 2.5 A resolution and is topologically different from that of any other dehydrogenase. This enzyme, a dimer of identical 416-residue subunits, is inactivated by phosphorylation at Ser-113, which lies at the edge of an interdomain pocket that also contains many residues conserved between isocitrate dehydrogenase and isopropylmalate dehydrogenase. Isocitrate dehydrogenase contains an unusual clasp-like domain in which both polypeptide chains in the dimer interlock. Based on the structure of isocitrate dehydrogenase and conservation with isopropylmalate dehydrogenase, we suggest that the active site lies in an interdomain pocket close to the phosphorylation site.

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Metadata

Authors
Hurley, J. H., Thorsness, P. E., Ramalingam, V, Helmers, N. H., Koshland, D. E., & Stroud, R. M.
Venue
Proceedings of the National Academy of Sciences
Published
1989-11
Volume
86
Issue
22
Pages
8635-8639
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1966463163
Cited by
207
References
0
FWCI
6.33
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Structure of a bacterial enzyme regulated by phosphorylation, isocitrate dehydrogenase. https://app.cochat.ai/papers/10.1073/pnas.86.22.8635
The paper
Hurley, J. H., Thorsness, P. E., Ramalingam, V, Helmers, N. H., Koshland, D. E., & Stroud, R. M. (1989). Structure of a bacterial enzyme regulated by phosphorylation, isocitrate dehydrogenase. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.86.22.8635

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