Auxin binds to its receptor within a ubiquitin ligase complex and promotes the binding and degradation of transcriptional repressors. The discovery of a cyclophilin isomerase enzyme critical in this process adds a new twist to auxin signalling.
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Su, SH., Gray, W. & Masson, P. Auxin: Shape matters. Nature Plants 1, 15097 (2015). https://doi.org/10.1038/nplants.2015.97
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DOI: https://doi.org/10.1038/nplants.2015.97