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TIRs of joy: new receptors for auxin

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Abstract

Back-to-back papers have described the identification of a family of receptors for the plant hormone auxin.((1,2)) Most developmental processes in plants are dependent on auxin signalling making this discovery a landmark in the search for the mechanism of auxin action. The TIR1 gene translates into a protein with recognised motifs including an F-box domain and TIR1 forms part of an important ubiquitination complex that tags other proteins for degradation.((3)) Specific amongst the targets of TIR1 are a set of auxin-regulated transcription factors.((4)) The latest work has shown that TIR1 itself is also the binding site for auxin making it an auxin receptor with no requirement for a biochemical signalling cascade

Topics: QD, QH301
Publisher: JOHN WILEY & SONS INC
OAI identifier: oai:wrap.warwick.ac.uk:34247
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