Molecular Endocrinology Study Questions Study Guide Rated A+

Beta/gamma dimer {Ans: Components of GPCR activation loop, not always shown in diagrams}Vasodilation {Ans: Result of cGMP production by guanylyl cyclase activation}Ferroportin {Ans: Regulated by hepcidin, controls iron release from cells}CREB {Ans: cAMP response element binding protein, enhances transcription when phosphorylated}Primary Messengers {Ans: Stimulate guanylyl cyclase, membrane-bound and soluble forms}Cholera toxin {Ans: Blocks GTPase activity of Gα subunit, leading to constant cAMP stimulation}