Protein Information

Name GT1
Synonyms B4GAL T1; GTB; GT1; UDP Gal; B4GALT1; B4GALT1 protein; Beta4Gal T1; GGTB 2…

Compound Information

Name 1-naphthol
CAS 1-naphthalenol

Reference List

PubMed Abstract RScore(About this table)
3091034 Finley BL, Ashley PJ, Neptune AG, Yost GS: Substrate-selective induction of rabbit hepatic UDP-glucuronyltransferases by ethanol and other xenobiotics. Biochem Pharmacol. 1986 Sep 1;35(17):2875-81.

Hepatic microsomes from treated and control animals were incubated with the GT1-type substrates, p-nitrophenol and 1-naphthol; the GT2-type substrate, morphine; and the steroid substrate, estrone.
81(1,1,1,1) Details
6807317 Bock KW, Lilienblum W, Pfeil H: Functional heterogeneity of UDP-glucuronosyltransferase activities in C57BL/6 and DBA/2 mice. Biochem Pharmacol. 1982 Apr 1;31(7):1273-7.

Functional heterogeneity of liver microsomal UDP-glucuronosyltransferase activities towards 1-naphthol, 4-methylumbelliferone or 3-hydroxybenzo (a) pyrene (UDP-GT1 activities) and morphine or 4-hydroxybiphenyl (UDP-GT2 activities) was studied in two inbred strains of mice which are genetically responsive (C57BL/6) or non-responsive (DBA/2) to 3-methylcholanthrene-induction of drug metabolizing enzymes. 3-Methylcholanthrene preferentially induced UDP-GT1 activities in C57BL/6 mice.
33(0,1,1,3) Details
2139521 Pandey A, Hassen AM, Benedict DR, Fitzpatrick DW: Effect of UDP-glucuronyltransferase induction on zearalenone metabolism. . Toxicol Lett. 1990 Apr;51(2):203-11.

In competitive enzyme assays, the activity of rat liver UDP-GT towards Z was inhibited by 1-naphthol (NA), a GT1 substrate, and 4-hydroxybiphenyl (HB), a GT2 substrate.
32(0,1,1,2) Details
3096339 Koster AS, Schirmer G, Bock KW: Immunochemical and functional characterization of UDP-glucuronosyltransferases from rat liver, intestine and kidney. Biochem Pharmacol. 1986 Nov 15;35(22):3971-5.

GT1 activities (1-naphthol, benzo (a) pyrene-3,6-quinol) are induced by 3MC in liver microsomes and are present in all tissues investigated.
8(0,0,1,3) Details
6179609 Bock KW, Lilienblum W, Pfeil H, Eriksson LC: Increased uridine diphosphate-glucuronyltransferase activity in preneoplastic liver nodules and Morris hepatomas. Cancer Res. 1982 Sep;42(9):3747-52.


This enzyme form, operationally termed UDP-GT1, accepts 1-naphthol,4-methylumbelliferone, and 3-hydroxybenzo (a) pyrene as substrates and is chiefly inducible in liver by 3-methylcholanthrene-type inducers.
4(0,0,0,4) Details
3341022 Souhaili-el Amri H, Fargetton X, Benoit E, Totis M, Batt AM: Inducing effect of albendazole on rat liver drug-metabolizing enzymes and metabolite pharmacokinetics. Toxicol Appl Pharmacol. 1988 Jan;92(1):141-9.

Although a range of imidazole derivatives, including benzimidazole itself, were commonly reported as inhibitors of monooxygenase activities, ABZ behaved as an inducer of cytochrome P-448, GT1, and epoxide hydrolase.
UDP-glucuronosyltransferase (GT) type 1 activities (1-naphthol, 7-hydroxycoumarin, 4-nitrophenol, and 4-methylumbelliferone) were significantly higher than in control microsomes (3- to 4-fold), while GT type 2 activities and bilirubin-GT remained unchanged.
1(0,0,0,1) Details
6805477 Lilienblum W, Walli AK, Bock KW: Differential induction of rat liver microsomal UDP-glucuronosyltransferase activites by various inducing agents. Biochem Pharmacol. 1982 Mar 15;31(6):907-13.


The selectivity of various inducers of UDP-glucuronosyltransferase was investigated in rat liver microsomes and compared with their effect on monooxygenase reactions. (1) Similar to 3-methyl-cholanthrene beta-naphthoflavone selectively stimulated the glucuronidation of 1-naphthol and 4-methylumbelliferone (GT1 substrates). (2) In contrast, DDT preferentially enhanced the glucuronidation of morphine, 4-hydroxybiphenyl (GT2 substrates) and bilirubin, similar to phenobarbital. (3) Colfibric acid and bezafibrate selectively enhanced bilirubin glucuronidation without affecting GT1 and GT2 reactions. (4) Similar to ethoxyquin and Aroclor 1254, trans-stilbene oxide enhanced both GT1 and GT2 activities but not bilirubin glucuronidation. (5) In contrast to 3-methylcholanthrene-type inducers which induce both cytochrome P-450MC and GT1, probably through a common receptor protein, ethoxyquin and trans-stilbene oxide markedly induced GT1 reactions without affecting benzo [a] pyrene monooxygenase.
0(0,0,0,0) Details