Dominant Negative Regulation by c-Jun of Transcription of the Uncoupling Protein-1 Gene through a Proximal cAMP-Regulatory Element: A Mechanism for Repressing Basal and Norepinephrine-Induced Expression of the Gene before Brown Adipocyte Differentiation

Abstract excerpt

The brown fat uncoupling protein-1 (ucp-1) gene is regulated by the sympathetic nervous system, and its transcription is stimulated by norepinephrine, mainly through cAMP-mediated pathways. Overexpression of the catalytic subunit of protein kinase A stimulated a chloramphenicol acetyltransferase expression vector driven by the 4.5-kb 5'-region of the rat ucp-1 gene. Mutant deletion analysis indicated the presence...

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