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PGC-1 and PERC, coactivators of the estrogen receptor-related receptor γ
被引:62
作者:
Hentschke, M
[1
]
Süsens, U
[1
]
Borgmeyer, U
[1
]
机构:
[1] Univ Hamburg, Inst Entwicklungsneurobiol, Zentrum Mol Neurobiol, D-20246 Hamburg, Germany
关键词:
transcription factor;
ERR3;
NR3B3;
nuclear localization;
EGFP;
transactivation;
pull down;
D O I:
10.1016/S0006-291X(02)02753-5
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The mouse nuclear receptor ERRgamma (estrogen receptor-related receptor 7) is highly expressed in heart, skeletal muscle, kidney, and brain, as well as in the developing nervous system. We found that the expression of the coactivators PGC-1 (PGC-1alpha) and PERC (PGC-1beta) in mammalian cells augmented potently the transcriptional activation by ERRgamma. The constitutive activation function 2 (AF-2) of the orphan receptor was important for the synergistic enhancement. Functional receptor truncation analysis revealed an additional amino-terminal activation function, specific for the ERRgamma2 isoform and PGC-1. In vitro experiments showed a direct interaction of ERRgamma with both coactivators. Our findings suggest distinct regulatory functions for PGG-1 and PERC as tissue-specific coactivators for ERRgamma. (C) 2002 Elsevier Science (USA). All rights reserved.
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页码:872 / 879
页数:8
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