Premium
Localization of the nuclear receptor CAR at the cell membrane of mouse liver
Author(s) -
Koike Chika,
Moore Rick,
Negishi Masahiko
Publication year - 2005
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2005.10.070
Subject(s) - constitutive androstane receptor , microbiology and biotechnology , cytoplasm , cell , nuclear receptor , receptor , cell membrane , cell nucleus , transcription factor , chemistry , nucleus , cell surface receptor , biology , biochemistry , gene
The nuclear receptor constitutive active/androstane receptor CAR is a drug‐sensing transcription factor. Upon activation by various drugs such as phenobarbital (PB), CAR translocates from the cytoplasm into the nucleus to regulate the genes that encode enzymes and proteins involved in hepatic metabolism. Here, we have shown the presence of CAR at the cell membrane of mouse livers, using Car +/+ and Car −/− mice. Levels of the cell membrane CAR increased after PB treatment. The CAR exists as a large approximately 160 kDa complex. Thus, CAR undergoes PB‐induced translocation to the cell membrane, indicating that CAR may exert a non‐genomic action.