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Updated: Dec 31, 2025

Assaying Proteasomal Degradation in a Cell-free System in Plants
Published on: March 26, 2014
Structural Aspects of Plant Hormone Signal Perception and Regulation by Ubiquitin Ligases
Lior Tal1, M Ximena Anleu Gil1, Angelica M Guercio1
1Department of Plant Biology, University of California Davis, Davis, California 95616.
Abstract:
Hormonal cues regulate many aspects of plant growth and development, facilitating the plant's ability to systemically respond to environmental changes. Elucidating the molecular mechanisms governing these signaling pathways is crucial to understanding how plants function. Structural and functional biology methods have been essential in decoding plant genetic findings and revealing precise molecular actions at the protein level. Past studies of plant hormone signaling have uncovered mechanisms that involve highly coordinated protein turnover to elicit immediate cellular responses. Many phytohormone signaling pathways rely on the ubiquitin (Ub) proteasome system, specifically E3 Ub ligases, for perception and initiation of signaling transduction. In this review, we highlight structural aspects of plant hormone-sensing mechanisms by Ub ligases and discuss our current understanding of the emerging field of strigolactone signaling.
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