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Retinoid X receptor alpha transactivates the hepatitis B virus enhancer 1 element by forming a heterodimeric complex with the peroxisome proliferator-activated receptor.

Publication Date
  • Research Article
  • Medicine


The hepatitis B virus enhancer 1 contains a retinoic acid responsive element (RARE). We have previously demonstrated that retinoid X receptor alpha (RXR alpha) transactivates enhancer 1 by binding to the RARE. The present study has revealed that a heterodimeric complex composed of RXR alpha and peroxisome proliferator-activated receptor (PPAR) interacts with the hepatitis B virus RARE. Transient transfection studies, in conjunction with in vitro DNA binding data, support the hypothesis that the RXR alpha-PPAR heterodimer transactivates enhancer 1.

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