Cited by 117Protein Kinase Regulation and GTPase SignalingWnt/β-catenin signaling in development and cancerSignaling Pathways in Disease

Glycogen synthase kinase 3β is tyrosine phosphorylated by PYK2

Hartigan, Judith A., Xiong, Wen-Cheng, Johnson, Gail V.W.·2001·Biochemical and Biophysical Research Communications

Abstract

Glycogen synthase kinase 3beta (GSK3beta) is a Ser/Thr kinase that is involved in numerous cellular activities. GSK3beta is activated by tyrosine phosphorylation. However, very little is known about the tyrosine kinases that are responsible for phosphorylating GSK3beta. In this report, we investigated the ability of the calcium-dependent tyrosine kinase, proline-rich tyrosine kinase 2 (PYK2) to tyrosine phosphorylate GSK3beta. In transfected CHO cells, it was demonstrated that PYK2 tyrosine phosphorylates GSK3beta in situ. The two kinases also coimmunoprecipitated. Furthermore, GSK3beta was tyrosine phosphorylated in vitro by an active, wild type PYK2, but not by the inactive, kinase dead form of PYK2. Therefore, this study is the first to demonstrate that GSK3beta is a substrate of PYK2 both in vitro and in situ.

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Crossref · 10.1006/bbrc.2001.4986

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Authors
Hartigan, J. A., Xiong, W.-C., & Johnson, G. V. W.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Johnson, Gail V.W.
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2001-06
Volume
284
Issue
2
Pages
485-489
ISSN
0006-291X (ISSN-L)
OpenAlex
W2003720538
Cited by
117
References
29
Citations by year
2026: 7 · 2025: 2 · 2024: 2 · 2023: 7 · 2022: 10 · 2021: 4 · 2020: 3 · 2019: 2 · 2018: 6 · 2017: 4 · 2016: 2 · 2015: 1 · 2014: 4 · 2013: 8 · 2012: 6
FWCI
1.87
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ns035060-07)
  • National Institute of Neurological Disorders and Stroke (NS35060)
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 › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
Keywords
glycogen synthase kinase-3β, Pyk2, tyrosine phosphorylation, tyrosine kinase, kinase substrates, protein-protein interaction
MeSH terms
Animals, Enzyme Activation, Cricetinae, Isoenzymes, Mutation, Phosphorylation, Precipitin Tests, Protein-Tyrosine Kinases, Substrate Specificity, Transfection, Tyrosine, Immunoblotting, CHO Cells, Calcium-Calmodulin-Dependent Protein Kinases, Glycogen Synthase Kinases, Glycogen Synthase Kinase 3, Focal Adhesion Kinase 2

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