Cited by 82Neuroscience and Neuropharmacology ResearchProtein Kinase Regulation and GTPase SignalingCell Adhesion Molecules Research

Association of an A-Kinase-anchoring Protein Signaling Scaffold with Cadherin Adhesion Molecules in Neurons and Epithelial Cells

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Gorski, Jessica A., Gomez, Lisa L., Scott, John D., Dell'Acqua, Mark L.·2005·Molecular Biology of the Cell

Abstract

A-kinase-anchoring protein (AKAP) 79/150 organizes a scaffold of cAMP-dependent protein kinase (PKA), protein kinase C (PKC), and protein phosphatase 2B/calcineurin that regulates phosphorylation pathways underlying neuronal long-term potentiation and long-term depression (LTD) synaptic plasticity. AKAP79/150 postsynaptic targeting requires three N-terminal basic domains that bind F-actin and acidic phospholipids. Here, we report a novel interaction of these domains with cadherin adhesion molecules that are linked to actin through beta-catenin (beta-cat) at neuronal synapses and epithelial adherens junctions. Mapping the AKAP binding site in cadherins identified overlap with beta-cat binding; however, no competition between AKAP and beta-cat binding to cadherins was detected in vitro. Accordingly, AKAP79/150 exhibited polarized localization with beta-cat and cadherins in epithelial cell lateral membranes, and beta-cat was present in AKAP-cadherin complexes isolated from epithelial cells, cultured neurons, and rat brain synaptic membranes. Inhibition of epithelial cell cadherin adhesion and actin polymerization redistributed intact AKAP-cadherin complexes from lateral membranes to intracellular compartments. In contrast, stimulation of neuronal pathways implicated in LTD that depolymerize postsynaptic F-actin disrupted AKAP-cadherin interactions and resulted in loss of the AKAP, but not cadherins, from synapses. This neuronal regulation of AKAP79/150 targeting to cadherins may be important in functional and structural synaptic modifications underlying plasticity.

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Crossref · 10.1091/mbc.e05-02-0134

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Authors
Gorski, J. A., Gomez, L. L., Scott, J. D., & Dell'Acqua, M. L.
Affiliations
  • University of Colorado Denver (US)
  • Howard Hughes Medical Institute (US)
  • Department of Pharmacology, University of Colorado at Denver and Health Sciences Center, Aurora, CO 80045
Venue
Molecular Biology of the Cell
Published
2005-08
Volume
16
Issue
8
Pages
3574-3590
ISSN
  • 1059-1524 (ISSN-L)
  • 1939-4586
OpenAlex
W2113913008
Cited by
82
References
53
Citations by year
2026: 3 · 2025: 1 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 1 · 2018: 5 · 2017: 3 · 2016: 2 · 2015: 3 · 2014: 8 · 2013: 2 · 2012: 7
FWCI
2.42
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology of the Cell (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • National Institute of General Medical Sciences (R01GM048231, GM-48231, R37GM048231)
  • National Institute of Neurological Disorders and Stroke (R56NS040701, R01NS040701, NS-40701)
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
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
Keywords
AKAP79/150, protein kinase A, protein kinase C, calcineurin, cadherins, β-catenin, F-actin binding, synaptic plasticity, long-term depression, long-term potentiation, adherens junctions, actin depolymerization, protein phosphorylation, synaptic targeting, epithelial cells, neurons
MeSH terms
Actins, Animals, Binding Sites, Cell Adhesion, Cells, Cultured, Dogs, Epithelial Cells, Humans, Neurons, Protein Binding, Signal Transduction, Cadherins, Receptors, N-Methyl-D-Aspartate, Cell Polarity, Calcineurin, Fluorescence Resonance Energy Transfer, Adaptor Proteins, Signal Transducing, Rats, A Kinase Anchor Proteins

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