Cited by 120Protein Kinase Regulation and GTPase SignalingSignaling Pathways in DiseaseNeuroscience and Neuropharmacology Research

Intersubunit capture of regulatory segments is a component of cooperative CaMKII activation

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Chao, Luke H, Pellicena, Patricia, Deindl, Sebastian, Barclay, Lauren A, Schulman, Howard, Kuriyan, John·2010·Nature Structural & Molecular Biology

Abstract

The dodecameric holoenzyme of calcium-calmodulin-dependent protein kinase II (CaMKII) responds to high-frequency Ca(2+) pulses to become Ca(2+) independent. A simple coincidence-detector model for Ca(2+)-frequency dependency assumes noncooperative activation of kinase domains. We show that activation of CaMKII by Ca(2+)-calmodulin is cooperative, with a Hill coefficient of approximately 3.0, implying sequential kinase-domain activation beyond dimeric units. We present data for a model in which cooperative activation includes the intersubunit 'capture' of regulatory segments. Such a capture interaction is seen in a crystal structure that shows extensive contacts between the regulatory segment of one kinase and the catalytic domain of another. These interactions are mimicked by a natural inhibitor of CaMKII. Our results show that a simple coincidence-detection model cannot be operative and point to the importance of kinetic dissection of the frequency-response mechanism in future experiments.

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Crossref · 10.1038/nsmb.1751

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  • A CaMKIIN peptide binds across the CaMKII surface groove at docking sites designated A, B, and C.

    “The structure of a CaMKIIN peptide to CaMKII shows it to bind across the surface groove, with docking sites designated as A, B, and C (3 oval indentations in FIGURE 2) (62).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [62]

  • The requirements for clustering are consistent with the subunit capture conformation seen in a crystal structure of CaMKII truncated after a portion of the regulatory segment and lacking the CaM binding domain and the remaining COOH-terminal end of the protein.

    “The requirements for clustering are consistent with the subunit capture conformation seen in a crystal structure of CaMKII truncated after a portion of the regulatory segment and lacking the CaM binding domain and the remaining COOH-terminal end of the protein (62).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [62]

  • In the crystal structure, monomeric units form a repeating chain in which the regulatory segment of one monomer is bound to the kinase groove of a second monomer and the regulatory segment of that second monomer is bound across the kinase groove of a third monomer, and so on.

    “The monomeric units form a repeating chain of regulatory segment of one bound to the kinase groove of a second monomer and regulatory segment of that second monomer bound across the kinase groove of a third monomer, and so on.”

    From Synaptic memory and CaMKII (2023) · cites this paper as [62]

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Authors
Chao, L. H., Pellicena, P., Deindl, S., Barclay, L. A., Schulman, H., & Kuriyan, J.
Affiliations
  • University of California, Berkeley (US)
  • QB3 (US)
Corresponding author
Kuriyan, John
Venue
Nature Structural & Molecular Biology
Published
2010-02-07
Volume
17
Issue
3
Pages
264-272
ISSN
  • 1545-9985 (ISSN-L)
  • 1545-9993
OpenAlex
W1993504559
Cited by
119
References
49
Citations by year
2026: 1 · 2025: 2 · 2024: 10 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 7 · 2019: 10 · 2018: 15 · 2017: 6 · 2016: 4 · 2015: 6 · 2014: 8 · 2013: 11 · 2012: 9
FWCI
4.56
Type
journal article
Language
en
Open access
Locations
  • Nature Structural & Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
CaMKII, calcium/calmodulin-dependent protein kinase II, intersubunit interactions, Hill coefficient, coincidence detection, CaMKII inhibitor, crystal structure, kinase domain, frequency response
MeSH terms
Animals, Binding Sites, Calcium, Calmodulin, Humans, Models, Biological, Phosphorylation, Protein Binding, Caenorhabditis elegans, Protein Structure, Secondary, Crystallography, X-Ray, Caenorhabditis elegans Proteins, Calcium-Calmodulin-Dependent Protein Kinase Type 2

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