AP-2 (activating protein 2) and Sp1 (selective promoter factor 1) regulatory elements play distinct roles in the control of basal activity and cyclic adenosine 3',5'-monophosphate responsiveness of the human chorionic gonadotropin-beta promoter.

@article{Johnson1999AP2P,
  title={AP-2 (activating protein 2) and Sp1 (selective promoter factor 1) regulatory elements play distinct roles in the control of basal activity and cyclic adenosine 3',5'-monophosphate responsiveness of the human chorionic gonadotropin-beta promoter.},
  author={Wade B Johnson and Jacqueline Jameson},
  journal={Molecular endocrinology},
  year={1999},
  volume={13 11},
  pages={1963-75}
}
The CG beta-subunit gene (CGbeta) arose evolutionarily from the LH beta-subunit gene (LHbeta) through gene duplication. Although the promoter sequences of the CGbeta and human (h) hLHbeta genes are greater than 90% homologous, their expression patterns are distinct. LHbeta is expressed in pituitary gonadotrope cells and CGbeta is expressed in placental trophoblast cells. The placental specific and cAMP-inducible region within the CGbeta promoter has been mapped to a complex enhancer element… CONTINUE READING

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