passages.id: split_5_test_515_passage
passages.type: progene_text
passages.text: The rat HDL receptor promoter contains a steroidogenic factor-1 ( SF-1 ) - binding site ( SFBd ; 5'-TCAAGGCC-3' ) through which SF-1 protein binds and activates transcription of this gene in both human HTB9 bladder carcinoma and mouse Y1 tumor cells , an effect that is enhanced by cAMP .