NCBI Accession #
NP_001321426.1
NCBI GenBank Nucleotide #
NM_001331589.1
NCBI Official Full Name
Chitinase family protein
NCBI Official Symbol
POM1
NCBI Official Synonym Symbols
ATCTL1; CHITINASE-LIKE PROTEIN 1; CTL1; ECTOPIC DEPOSITION OF LIGNIN IN PITH; ECTOPIC DEPOSITION OF LIGNIN IN PITH 1; ECTOPIC ROOT HAIR 2; ELP; ELP1; ERH2; HOT2; POM-POM1; SENSITIVE TO HOT TEMPERATURES 2; T20M3.12; T20M3_12
NCBI Protein Information
Chitinase family protein
NCBI Summary
Encodes an endo chitinase-like protein AtCTL1. Essential for tolerance to heat, salt and drought stresses. Also involved in root hair development, cell expansion and response to cytokinin. Allelic to erh2. 11 alleles described in Hauser (1995). Mutant is defective in acquired thermotolerance, appears semidwarf throughout its life cycle and has extra lateral branches. There are two EMS alleles. Expression of AtHSP101 is not affected in the mutants.
UniProt Synonym Gene Names
ARM; ELP1; ERH2; HOT2; POM1; AtCTL1
UniProt Protein Name
Chitinase-like protein 1
UniProt Synonym Protein Names
Protein ANION ALTERED ROOT MORPHOLOGY; Protein ECTOPIC DEPOSITION OF LIGNIN IN PITH 1; Protein ECTOPIC ROOT HAIR 2; Protein POM-POM1; Protein SENSITIVE TO HOT TEMPERATURES 2
UniProt Primary Accession #
Q9MA41
UniProt Secondary Accession #
Q42042; C0SUT2
UniProt Related Accession #
Q9MA41
UniProt Comments
No chitinase activity. Essential for normal plant growth and development. Regulates cell expansion extent and differentiation at least in roots and hypocotyls. Prevents lignin accumulation in the pith. May modulate ethylene-mediated regulation during development. Probably required to establish thermotolerance acclimation. Plays a role for controlled anisotropic cell expansion in the regulation of waving during root gravitropism and thigmotropism. Involved in the root system architecture adaptation to multiple environmental conditions such as nitrate. Contributes to salt tolerance and possibly to drought by preventing the overaccumulation of sodium ions.