Protein Information

Name UGT1A3
Synonyms GNT1; UGT 1; UGT1; GNT1; UDPGT; UDP glycosyltransferase 1 family polypeptide A3; UDP glucuronosyltransferase 1 3; UDP glucuronosyltransferase 1 3 precursor…

Compound Information

Name 1-naphthol
CAS 1-naphthalenol

Reference List

PubMed Abstract RScore(About this table)
17636046 Kubota T, Lewis BC, Elliot DJ, Mackenzie PI, Miners JO: Critical roles of residues 36 and 40 in the phenol and tertiary amine aglycone substrate selectivities of UDP-glucuronosyltransferases 1A3 and 1A4. Mol Pharmacol. 2007 Oct;72(4):1054-62. Epub 2007 Jul 17.

UGT1A3 glucuronidates the planar phenols 1-naphthol (1-NP) and 4-methylumbelliferone (4-MU), whereas UGT1A4 converts the tertiary amines lamotrigine (LTG) and trifluoperazine (TFP) to quaternary ammonium glucuronides.
88(1,1,1,8) Details
15788539 Di Marco A, D'Antoni M, Attaccalite S, Carotenuto P, Laufer R: Determination of drug glucuronidation and UDP-glucuronosyltransferase selectivity using a 96-well radiometric assay. Drug Metab Dispos. 2005 Jun;33(6):812-9. Epub 2005 Mar 23.

The major UGT isoforms identified were UGT1A6, UGT1A7, and UGT1A9 for 4-methylumbelliferone; UGT1A6 and UGT1A8 for 1-naphthol; UGT2B7 for naloxone; UGT1A3 and UGT2B7 for ketoprofen; and UGT1A4 for trifluoperazine.
6(0,0,1,1) Details
10901286 Sabolovic N, Magdalou J, Netter P, Abid A: Nonsteroidal anti-inflammatory drugs and phenols glucuronidation in Caco-2 cells: identification of the UDP-glucuronosyltransferases UGT1A6, 1A3 and 2B7. Life Sci. 2000;67(2):185-96.

Glucuronidation of phenols (1-naphthol, 4-methylumbelliferone) and nonsteroidal anti-inflammatory drugs (NSAIDs) such as ketoprofen, naproxen and carprofen was investigated in human colon carcinoma Caco-2 cell clones.
RT-PCR experiments indicated that the PD-7 and TC-7 clones expressed the UDP-glucuronosyltransferase (UGT) isoforms UGT1A6, UGT1A3 and UGT2B7, which could account for the glucuronidation of phenols and carboxylic acids observed.
2(0,0,0,2) Details
18004206 Udomuksorn W, Elliot DJ, Lewis BC, Mackenzie PI, Yoovathaworn K, Miners JO: Influence of mutations associated with Gilbert and Crigler-Najjar type II syndromes on the glucuronidation kinetics of bilirubin and other UDP-glucuronosyltransferase 1A substrates. Pharmacogenet Genomics. 2007 Dec;17(12):1017-29.


This work compared the effects of (a) the individual UGT1A1 mutations on the glucuronidation kinetics bilirubin, beta-estradiol, 4-methylumbelliferone (4MU) and 1-naphthol (1NP), and (b) the Y486 mutation, which occurs in the conserved carboxyl terminal domain of UGT1A enzymes, on 4MU, 1NP and naproxen glucuronidation by UGT1A3, UGT1A6 and UGT1A10.
2(0,0,0,2) Details