Journal
MOLECULAR PLANT
Volume 6, Issue 5, Pages 1388-1404Publisher
CELL PRESS
DOI: 10.1093/mp/sst005
Keywords
E3 ligases; plant development; plant physiology; ubiquitin proteasome pathway
Categories
Funding
- National Science Foundation (NSF) [MCB-1020673]
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [1020673] Funding Source: National Science Foundation
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E3 ligases comprise a highly diverse and important group of enzymes that act within the 26S ubiquitin proteasome pathway. They facilitate the transfer of ubiquitin moieties to substrate proteins which may be marked for degradation by this step. As such, they serve as central regulators in many cellular and physiological processes in plants. The review provides an update on the multitude of different E3 ligases currently known in plants, and illustrates the central role in plant biology of specific examples.Since its discovery in the late 1970s, the ubiquitin proteasome pathway appears to be omnipresent in many research fields. Although originally discovered in animals, the pathway has a very central role in plants, which may be correlated to their sessile lifestyle. E3 ligases function as flexible and highly diverse key regulators within the pathway by targeting substrate proteins for ubiquitylation, and often proteolytic degradation via the 26S proteasome. This review provides a concise overview on the most common classes of E3 ligases so far described in plants, and emphasizes recent findings regarding these interesting and flexible enzymes and their diverse functions in plant biology.
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