NCBI Accession #
NP_565261.1
NCBI GenBank Nucleotide #
NM_126203.3
NCBI Official Full Name
Auxin efflux carrier family protein
NCBI Official Symbol
PIN4
NCBI Official Synonym Symbols
ARABIDOPSIS PIN-FORMED 4; ATPIN4; AUXIN TRANSPORTER SPLICE VARIANT B; F10A8.27; PIN-FORMED 4
NCBI Protein Information
Auxin efflux carrier family protein
NCBI Summary
Encodes a putative auxin efflux carrier that is localized in developing and mature root meristems. It is involved in the maintenance of embryonic auxin gradients. A role for AtPIN4 in generating a sink for auxin below the quiescent center of the root meristem that is essential for auxin distribution and patterning is proposed. In the root, PIN4 is detected around the quiescent center and cells surrounding it, and localizes basally in provascular cells. PIN4 expression is upregulated in brassinosteroid-insensitive mutant (PMID 16141452).
UniProt Synonym Gene Names
AtPIN4
UniProt Protein Name
Auxin efflux carrier component 4
UniProt Primary Accession #
Q8RWZ6
UniProt Secondary Accession #
Q9M7Q6; Q9MAS3
UniProt Related Accession #
Q8RWZ6
UniProt Comments
Acts as a component of the auxin efflux carrier. Plays a role in generating a sink for auxin into columella cells. Maintains the endogenous auxin gradient, which is essential for correct root patterning.