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Related Experiment Video

Updated: Jul 10, 2026

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
13:22

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays

Published on: October 23, 2019

A cell-based screening method for specifically detecting kinase activity.

Mikiya Suda1, Tsuyoshi Ishii, Hiroshi Sootome

  • 1GlaxoSmithKline K.K., 43 Wadai, Tsukuba-shi, Ibaraki, 300-4247, Japan.

Analytical and Bioanalytical Chemistry
|November 7, 2007
PubMed
Summary

Researchers developed a new platform to monitor serine/threonine kinase activity in cells. This method uses engineered fusion proteins to detect kinase activity and screen for potential drug inhibitors.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Specific monitoring of diverse kinase catalytic activity in cellular environments remains challenging.
  • Existing methods lack universality for a broad range of kinases.

Purpose of the Study:

  • To develop an innovative platform for detecting autonomous serine/threonine kinase activity within cells.
  • To establish a novel system for cell-based screening of protein kinase inhibitors.

Main Methods:

  • Engineered expression vectors encoding modified substrate kinase fusion proteins.
  • Utilized p53 tumor suppressor protein fused with kinase domains (Chk1, DYRK3, Cdk5) as a surrogate substrate.
  • Transfected cells with fusion proteins and monitored p53 moiety phosphorylation as an indicator of kinase activity.

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Last Updated: Jul 10, 2026

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
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Published on: October 23, 2019

Assaying Protein Kinase Activity with Radiolabeled ATP
08:05

Assaying Protein Kinase Activity with Radiolabeled ATP

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Identification of Kinase-substrate Pairs Using High Throughput Screening
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Identification of Kinase-substrate Pairs Using High Throughput Screening

Published on: August 29, 2015

Main Results:

  • Demonstrated specific induction of p53 phosphorylation by the catalytic activity of kinases within fusion proteins.
  • Confirmed that kinase-inactive mutants blocked p53 phosphorylation, validating the system's specificity.
  • Successfully applied the system for cell-based evaluation of Cyclin-dependent kinase 5 (Cdk5) inhibitors.

Conclusions:

  • The developed platform offers a novel approach for specific, cell-based detection of kinase activity.
  • This method has significant potential for broad application in screening inhibitors for various protein kinases.
  • The system is a valuable tool for drug discovery efforts targeting kinase-related pathways.