A steroidogenic factor-1-binding site and cyclic adenosine 3',5'-monophosphate response element-like elements are required for the activity of the rat aromatase promoter in rat Leydig tumor cell lines.

Abstract excerpt

Although transcription initiation within CYP19 (cytochrome P450 aromatase) occurs immediately 5' to the initiator methionine (proximal promoter) in two rat Leydig tumor cell lines (R2C and H540) that express high aromatase activity and in rat ovary, the patterns of aromatase expression in the two cell types are distinctive. To define mechanisms controlling different patterns of expression of the rat aromatase...

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