A vast array of small, non-peptide, organic compounds that are biologically active. Products include receptor antagonists, molecular probes, metabolites, GPCR ligands, neurotransmitters, ion channel modulators, and signaling activators and inhibitors.
The synthetic steroid hormone dexamethasone binds to the glucocorticoid receptor, producing a steroid-receptor complex that then localizes in the nucleus and regulates gene transcription.