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J Exp Bot. 2009;60(4):1093-107. doi: 10.1093/jxb/ern240. Epub 2008 Sep 29.

Post-transcriptional regulation of auxin transport proteins: cellular trafficking, protein phosphorylation, protein maturation, ubiquitination, and membrane composition.

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  • 1Department of Horticulture, Purdue University, West Lafayette, Indiana 47907-2010, USA.

Abstract

Auxin concentration gradients, established by polar transport of auxin, are essential for the establishment and maintenance of polar growth and morphological patterning. Three families of cellular transport proteins, PIN-formed (PIN), P-glycoprotein (ABCB/PGP), and AUXIN RESISTANT 1/LIKE AUX1 (AUX1/LAX), can independently and co-ordinately transport auxin in plants. Regulation of these proteins involves intricate and co-ordinated cellular processes, including protein-protein interactions, vesicular trafficking, protein phosphorylation, ubiquitination, and stabilization of the transporter complexes on the plasma membrane.

PMID:
18824505
[PubMed - indexed for MEDLINE]
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