title: The effect of urea on the expression of the cysteine regulon.
abstract: Urea inhibits the expression of those cysteine genes which are regulated by the cysB gene products. It has no effect, however, on the constitutively expressed cysE gene.
mesh_terms: D003545:Cysteine / Q000235:genetics*; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000235:genetics*; D005786:Gene Expression Regulation / Q000187:drug effects; D009876:Operon; D014508:Urea / Q000494:pharmacology*; D001616:beta-Galactosidase / Q000235:genetics
chemical_list: D014508:Urea; D001616:beta-Galactosidase; D003545:Cysteine