Fatty Acid Activation of the Peroxisome Proliferator Activated Receptor, a Member of the Nuclear Receptor Gene Superfamily ,

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Abstract
The peroxisome proliferator activated receptor is a member of the steroid receptor gene superfamily, sharing amino acid sequence homology with other receptors and also showing similarities at the level of gene structure. This receptor is activated both by xenobiotic compounds that induce peroxisome proliferation and by fatty acids at physiological concentrations. Upon activation the receptor mediates transcription of responsive genes through binding to peroxisome proliferator response elements. These genes include those encoding peroxisomal enzymes and members of the cytochrome P450 family of drug metabolizing enzymes. It is therefore possible that the peroxisome proliferator activated receptor may play a crucial role in regulating lipid homeostasis.