期刊
TRENDS IN PLANT SCIENCE
卷 9, 期 6, 页码 302-308出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2004.04.003
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资金
- PHS HHS [NIH 43644] Funding Source: Medline
Auxin regulates many aspects of plant growth and development. Auxin is known to regulate gene expression through degradation of the AUX/IAA proteins, short-lived nuclear proteins that regulate gene transcription. The AUX/IAA proteins are degraded through the action of a ubiquitin protein ligase called SCFTIR1. Auxin promotes the interaction between AUX/IAA proteins and SCFTIR1 in a soluble extract, suggesting that the auxin receptor is a soluble factor. These studies also indicate that the auxin-induced AUX/IAA-SCFTIR1 interaction does not depend on phosphorylation or hydroxylation of AUX/IAA proteins. Although the mechanism of auxin-induced AUX/IAA-SCFTIR1 interaction is not yet clear, auxin might induce a modification in TIR1, AUX/IAA proteins or an adaptor protein that is required for the interaction.
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