期刊
CURRENT OPINION IN PLANT BIOLOGY
卷 7, 期 6, 页码 677-686出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2004.09.009
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In eukaryotes, the ubiquitin-proteasome system participates in the control of signal transduction events by selectively eliminating regulatory proteins. E3 ubiquitin ligases specifically bind degradation substrates and mediate their polyubiquitylation, a prerequisite for their degradation by the 26S proteasome. On the basis of the analysis of the Arabidopsis genome sequence, it is predicted that there are more than 1000 E3 ubiquitin ligases in plants. Several types of E3 ubiquitin ligases have already been characterized in eukaryotes. Recently, some of these E3 enzymes have been implicated in specific plant signaling pathways.
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