title: Transcriptional regulation of the genes encoding the cytochrome P-450 steroid hydroxylases.
abstract: Steroid hormone biosynthesis requires the concerted action of a related group of cytochrome P-450 steroid hydroxylases. In recent years considerable effort has been directed toward defining the molecular basis for the cell-selective expression of these genes and their transcriptional regulation by trophic hormones. The orphan nuclear receptor SF-1, acting through a conserved element found in the proximal promoter regions of all steroid hydroxylase genes, seems to be a major, but not exclusive, determinant of cell-selective gene expression. In contrast, the coordinate responses of the steroid hydroxylases to trophic hormones apparently involves an interplay of multiple proteins that collectively lead to a synchronous induction of gene expression. In some instances these interactions apparently involve transcription factors that also contribute to the cell-selective expression of these genes.
mesh_terms: D000818:Animals; D017362:Cyclic AMP Response Element-Binding Protein; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D004268:DNA-Binding Proteins; D051717:Fushi Tarazu Transcription Factors; D005786:Gene Expression Regulation; D018398:Homeodomain Proteins; D006801:Humans; D009928:Organ Specificity; D000075062:Pre-B-Cell Leukemia Transcription Factor 1; D011518:Proto-Oncogene Proteins; D018160:Receptors, Cytoplasmic and Nuclear; D013250:Steroid Hydroxylases / Q000235:genetics*; D054339:Steroidogenic Factor 1; D013256:Steroids / Q000096:biosynthesis; D014157:Transcription Factors; D014158:Transcription, Genetic
chemical_list: D017362:Cyclic AMP Response Element-Binding Protein; D004268:DNA-Binding Proteins; D051717:Fushi Tarazu Transcription Factors; D018398:Homeodomain Proteins; D000075062:Pre-B-Cell Leukemia Transcription Factor 1; D011518:Proto-Oncogene Proteins; D018160:Receptors, Cytoplasmic and Nuclear; D054339:Steroidogenic Factor 1; D013256:Steroids; D014157:Transcription Factors; C083400:PBX1 protein, human; D003577:Cytochrome P-450 Enzyme System; D013250:Steroid Hydroxylases