NCBI Accession #
NP_177250.1
NCBI GenBank Nucleotide #
NM_105762.3
NCBI Official Full Name
Auxin efflux carrier family protein
NCBI Official Symbol
PIN3
NCBI Official Synonym Symbols
ARABIDOPSIS PIN-FORMED 3; ATPIN3; F15H11.14; F15H11_14; PIN-FORMED 3
NCBI Protein Information
Auxin efflux carrier family protein
NCBI Summary
A regulator of auxin efflux and involved in differential growth. PIN3 is expressed in gravity-sensing tissues, with PIN3 protein accumulating predominantly at the lateral cell surface. PIN3 localizes to the plasma membrane and to vesicles. In roots, PIN3 is expressed without pronounced polarity in tiers two and three of the columella cells, at the basal side of vascular cells, and to the lateral side of pericycle cells of the elongation zone. PIN3 overexpression inhibits root cell growth. Protein phosphorylation plays a role in regulating PIN3 trafficking to the plasma membrane.
UniProt Synonym Gene Names
AtPIN3
UniProt Protein Name
Auxin efflux carrier component 3
UniProt Primary Accession #
Q9S7Z8
UniProt Related Accession #
Q9S7Z8
UniProt Comments
Acts as a component of the auxin efflux carrier. Seems to be involved in the lateral auxin transport system and mediates tropic growth. Coordinated polar localization of PIN3 is directly regulated by the vesicle trafficking process.