NCBI Accession #
NP_189528.1
NCBI GenBank Nucleotide #
NM_113807.3
NCBI Official Full Name
ATP binding cassette subfamily B19
NCBI Official Symbol
ABCB19
NCBI Official Synonym Symbols
Arabidopsis thaliana ATP-binding cassette B19; ATABCB19; ATMDR1; ATMDR11; ATP binding cassette subfamily B19; ATP BINDING CASSETTE SUBFAMILY B19; ATP-binding cassette B19; ATPGP19; MDR1; MDR11; MULTIDRUG RESISTANCE PROTEIN 11; P-GLYCOPROTEIN 19; PGP19
NCBI Protein Information
ATP binding cassette subfamily B19
NCBI Summary
Encodes a member of the ATP-binding cassette (ABC) transporter family that is involved in auxin transport and is involved in postembryonic organ separation. Also known as AtMDR11 and PGP19. Possibly regulates auxin-dependent responses by influencing basipetal auxin transport in the root. Acts upstream of phyA in regulating hypocotyl elongation and gravitropic response. Exerts nonredundantly overlapping functions with the ABC transporter encoded by AtPGP1.
UniProt Synonym Gene Names
MDR1; MDR11; PGP19; ABC transporter ABCB.19; AtABCB19
UniProt Protein Name
ABC transporter B family member 19
UniProt Synonym Protein Names
Multidrug resistance protein 11; P-glycoprotein 19
UniProt Primary Accession #
Q9LJX0
UniProt Secondary Accession #
Q8GZ77; Q8H6F5
UniProt Related Accession #
Q9LJX0
UniProt Comments
Auxin efflux transporter that acts as a negative regulator of light signaling to promote hypocotyl elongation. Mediates the accumulation of chlorophyll and anthocyanin, as well as the expression of genes in response to light. Participates in auxin efflux and thus regulates the polar auxin basipetal transport (from auxin-producing leaves to auxin-sensitive tissues, and from root tips to root elongating zone). Involved in diverse auxin-mediated responses including gravitropism, phototropism and lateral root formation.