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Related Experiment Video

Updated: Apr 13, 2026

Probing High-density Functional Protein Microarrays to Detect Protein-protein Interactions
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Plant protein kinase substrates identification using protein microarrays.

Shisong Ma1, Savithramma P Dinesh-Kumar

  • 1Department of Plant Biology and the Genome Center, College of Biological Sciences, University of California Davis, LSA1009, One Shields Avenue, Davis, CA, 95616, USA, sma@ucdavis.edu.

Methods in Molecular Biology (Clifton, N.J.)
|May 2, 2015
PubMed
Summary

Identifying plant protein kinase substrates is crucial for understanding plant signaling. This study presents a novel method using plant protein microarrays to discover these substrates through in vitro phosphorylation assays.

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Last Updated: Apr 13, 2026

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Area of Science:

  • Plant molecular biology
  • Biochemistry
  • Signaling pathways

Background:

  • Protein kinases are essential regulators of plant signaling pathways through phosphorylation.
  • Despite their importance, the specific substrates for most plant protein kinases remain unidentified.
  • Understanding these interactions is key to deciphering complex plant cellular processes.

Purpose of the Study:

  • To develop and present a robust protocol for identifying plant protein kinase substrates.
  • To leverage newly developed plant protein microarrays for high-throughput substrate discovery.
  • To advance the study of plant kinase signaling networks.

Main Methods:

  • Production of plant protein microarrays containing over 15,000 purified plant proteins.
  • Utilization of in vitro phosphorylation assays performed on these microarrays.
  • Systematic screening of potential kinase-substrate interactions.

Main Results:

  • Demonstration of a feasible protocol for identifying protein kinase substrates using plant protein microarrays.
  • Establishment of a resource for large-scale screening of kinase-substrate interactions.
  • Laying the groundwork for future functional studies of plant kinases.

Conclusions:

  • Plant protein microarrays offer a powerful platform for identifying kinase substrates.
  • This methodology significantly advances the characterization of plant signaling pathways.
  • The developed protocol facilitates a deeper understanding of plant kinase functions.