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Updated: May 31, 2026

Identification of Novel CK2 Kinase Substrates Using a Versatile Biochemical Approach
11:11

Identification of Novel CK2 Kinase Substrates Using a Versatile Biochemical Approach

Published on: February 21, 2019

Adiponectin receptor 1 interacts with both subunits of protein kinase CK2

Cathleen Juhl1, Karin Mörl, Annette G Beck-Sickinger

  • 1Institute of Biochemistry, Pharmacy and Psychology, Leipzig University, Leipzig, Germany.

Molecular and Cellular Biochemistry
|July 14, 2011
PubMed

Insights

Protein kinase CK2 interacts with adiponectin receptor 1, revealing a key role for CK2 in adiponectin signaling pathways. This discovery aids understanding of adiponectin

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Endocrinology

Background:

  • Adiponectin, an adipose hormone, regulates metabolic syndrome, hypertension, and atherosclerosis.
  • Adiponectin's therapeutic potential necessitates a detailed understanding of its signaling pathways.
  • Adiponectin receptors (AdipoR1/2) mediate adiponectin's biological activities.

Purpose of the Study:

  • To elucidate the detailed molecular mechanisms of adiponectin signaling.
  • To identify specific interaction partners of adiponectin receptor 1 (AdipoR1).
  • To clarify the role of protein kinase CK2 in adiponectin signaling.

Main Methods:

  • Yeast-two-hybrid screening
  • Co-immunoprecipitation assays
  • ELISA experiments
  • Co-localization studies
  • Bimolecular fluorescence complementation (BiFC)
  • Pharmacological inhibition of CK2 activity

Main Results:

  • The beta subunit of protein kinase CK2 was identified as an AdipoR1 interaction partner.
  • CK2 inhibition decreased ACC phosphorylation, implicating CK2 in adiponectin signaling.
  • The catalytic alpha subunit of CK2 also interacts with AdipoR1.
  • Full-length adiponectin did not induce dissociation of the CK2 alpha subunit from AdipoR1.

Conclusions:

  • Adiponectin receptor 1 interacts with the tetrameric complex of protein kinase CK2.
  • Protein kinase CK2 is a crucial component in adiponectin signaling pathways.
  • These findings provide a basis for therapeutic applications targeting adiponectin signaling.

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