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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/09%3A_Regulation_of_Gene_ExpressionThis page discusses gene expression regulation in E. coli and eukaryotes, highlighting the tryptophan operon in bacteria and mechanisms like transcription, RNA processing, steroid response elements, a...This page discusses gene expression regulation in E. coli and eukaryotes, highlighting the tryptophan operon in bacteria and mechanisms like transcription, RNA processing, steroid response elements, and epigenetics in eukaryotes. It mentions techniques such as footprinting and chromatin immunoprecipitation for studying DNA-binding proteins and covers specialized topics, including cell-specific gene expression, imprinted genes, and ribozymes.
- https://bio.libretexts.org/Bookshelves/Biochemistry/Fundamentals_of_Biochemistry_(Jakubowski_and_Flatt)/Unit_IV_-_Special_Topics/28%3A_Biosignaling_-_Capstone_Volume_I/28.11%3A_Signaling_by_Steroid_HormonesThe page outlines learning goals for understanding steroid hormones and their action mechanisms, emphasizing their lipid-soluble nature, ability to cross cell membranes, and binding to intracellular r...The page outlines learning goals for understanding steroid hormones and their action mechanisms, emphasizing their lipid-soluble nature, ability to cross cell membranes, and binding to intracellular receptors. It describes how these complexes modulate gene transcription, implying broader physiological and pathological impacts.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/09%3A_Regulation_of_Gene_Expression/9.04%3A_Steroid_Response_ElementsThis page presents a stereoscopic view of the glucocorticoid response element and its receptor, focusing on the structural features of DNA and the glucocorticoid receptor, a zinc-finger transcription ...This page presents a stereoscopic view of the glucocorticoid response element and its receptor, focusing on the structural features of DNA and the glucocorticoid receptor, a zinc-finger transcription factor important for gene regulation.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.06%3A_Hormones/15.6.01%3A_Human_Hormones/15.6.1.08%3A_ProgesteroneThis page discusses progesterone, a hormone essential for preparing the body for pregnancy and maintaining it post-conception, primarily secreted by the corpus luteum and later the placenta. It highli...This page discusses progesterone, a hormone essential for preparing the body for pregnancy and maintaining it post-conception, primarily secreted by the corpus luteum and later the placenta. It highlights the role of progestins, synthetic derivatives used in various medical applications, including birth control.
- https://bio.libretexts.org/Bookshelves/Biochemistry/Fundamentals_of_Biochemistry_(Jakubowski_and_Flatt)/02%3A_Unit_II-_Bioenergetics_and_Metabolism/21%3A_Lipid_Biosynthesis/21.05%3A_Biosynthesis_of_Cholesterol_and_SteroidsThis section examines cholesterol and steroid biosynthesis. It details how acetyl-CoA is converted through enzyme-driven steps into cholesterol—the precursor for essential steroid hormones. Key interm...This section examines cholesterol and steroid biosynthesis. It details how acetyl-CoA is converted through enzyme-driven steps into cholesterol—the precursor for essential steroid hormones. Key intermediates and regulatory mechanisms are highlighted to explain their roles in membrane structure and cellular signaling.
