Open AccessPost-transcriptional regulation of auxin transport proteins: cellular trafficking, protein phosphorylation, protein maturation, ubiquitination, and membrane composition
Author(s) -
Boosaree Titapiwatanakun,
Angus S. Murphy
Publication year - 2008
Publication title -
journal of experimental botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.616
H-Index - 242
eISSN - 1460-2431
pISSN - 0022-0957
DOI - 10.1093/jxb/ern240
Subject(s) - polar auxin transport , microbiology and biotechnology , auxin , transport protein , phosphorylation , ubiquitin , membrane protein , membrane transport protein , axoplasmic transport , membrane transport , biology , protein phosphorylation , biochemistry , chemistry , arabidopsis , gene , membrane , protein kinase a , mutant
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.