Inducible expression of the gamma-glutamylcysteine synthetase light subunit by t-butylhydroquinone in HepG2 cells is not dependent on an antioxidant-responsive element.

Autor: Galloway DC; Biomedical Research Centre, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, Scotland, U.K., McLellan LI
Jazyk: angličtina
Zdroj: The Biochemical journal [Biochem J] 1998 Dec 15; Vol. 336 ( Pt 3), pp. 535-9.
DOI: 10.1042/bj3360535
Abstrakt: Mutation analysis of putative regulatory elements located in the 5'-flanking region of the gene encoding the regulatory subunit of gamma-glutamylcysteine synthetase (GLCLR) revealed that neither an antioxidant-responsive element (ARE) nor an activator protein-1 (AP-1) site regulates inducible expression by t-butylhydroquinone (tBHQ). The AP-1 site was found to modulate basal expression of GLCLR. A 42 bp region between nucleotides -303 and -344, not containing an ARE, was found to regulate inducible expression of GLCLR by tBHQ.
Databáze: MEDLINE