Journal
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
Volume 96, Issue 1, Pages 45-50Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsbmb.2005.01.027
Keywords
p450 aromatase; promoter; estradiol; sex differentiation
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Investigation by RQ-RT-PCR revealed that transcription of the p450 aromatase gene is activated at stage 50, when sex determination of the female begins, and that aromatase gene expression is also activated by exogenously administrated estradiol. In order to determine the molecular basis underlying the specific activation of aromatase gene expression during sex differentiation and in response to exogenous estradiol, we isolated the 5'-flanking fragment of the gene and characterized the promoter sequence. We demonstrated binding sequences to a specific trans-activating factor upstream of the p450 aromatase promoter 11, the cAMP response element binding protein/activating transcription factor family, and steroidogenic factor- 1. An estrogen response element half-site sequence that recognize an estrogen receptors, was also found. (c) 2005 Elsevier Ltd. All rights reserved.
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