Cited by 371Neuroscience and Neuropharmacology ResearchProtein Kinase Regulation and GTPase SignalingPhosphodiesterase function and regulation

Anchoring of protein kinase A is required for modulation of AMPA/kainate receptors on hippocampal neurons

Rosenmund, Christian, Carr, Daniel W., Bergeson, Susan E., Nilaver, Gajanan, Scott, John D., Westbrook, Gary L.·1994·Nature

Abstract

Phosphorylation of molecules involved in synaptic transmission by multifunctional protein kinases modulates both pre- and post-synaptic events in the central nervous system. The positioning of kinases near their substrates may be an important part of the regulatory mechanism. The A-kinase-anchoring proteins (AKAPs; ref. 3) are known to bind the regulatory subunit of cyclic AMP-dependent protein kinase A with nanomolar affinity. Here we show that anchoring of protein kinase A by AKAPs is required for the modulation of alpha-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid (AMPA)/kainate channels. Intracellular perfusion of cultured hippocampal neurons with peptides derived from the conserved kinase binding region of AKAPs prevented the protein kinase A-mediated regulation of AMPA/kainate currents as well as fast excitatory synaptic currents. This effect could be overcome by adding the purified catalytic subunit of protein kinase. A control peptide lacking kinase-binding activity had no effect. To our knowledge, these results provide the first evidence that anchoring of protein kinase A is crucial in the regulation of synaptic function.

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Crossref · 10.1038/368853a0

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Authors
Rosenmund, C., Carr, D. W., Bergeson, S. E., Nilaver, G., Scott, J. D., & Westbrook, G. L.
Affiliations
  • Salk Institute for Biological Studies (US)
  • Oregon Health & Science University (US)
Venue
Nature
Published
1994-04
Volume
368
Issue
6474
Pages
853-856
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1969039665
Cited by
371
References
29
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 3 · 2017: 1 · 2016: 4 · 2015: 6 · 2014: 9 · 2013: 5 · 2012: 13
FWCI
8.79
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Phosphodiesterase function and regulation
Keywords
protein kinase A anchoring, A-kinase anchoring proteins, non-NMDA receptors, protein kinase A, hippocampal neurons, synaptic transmission, synaptic modulation
MeSH terms
Animals, Carrier Proteins, Cells, Cultured, Colforsin, Hippocampus, Humans, Membrane Potentials, Neurons, Peptide Fragments, Phosphorylation, Proteins, Synapses, Cyclic AMP-Dependent Protein Kinases, Receptors, AMPA, Kainic Acid Receptors, Adaptor Proteins, Signal Transducing, Rats, A Kinase Anchor Proteins

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