During G protein signaling, the signaling cascade begins when _______.
A: a phosphate is added to GTP
B: GTP replaces GDP
C: a phosphate is removed from GTP
D: GDP replaces GTP
A: a phosphate is added to GTP
B: GTP replaces GDP
C: a phosphate is removed from GTP
D: GDP replaces GTP
举一反三
- GTP-binding proteins act as _______________: they are in their active conformation when GTP is bound, but they can hydrolyze this GTP to GDP, which releases a phosphate and flips the protein to an inactive conformation.
- 属于活化G蛋白亚单位的是 A: α-GTP B: α-GDP C: β-GTP D: βγ-GDP
- The main storage form of high-energy phosphate in muscle A: ATP B: GTP C: UTP D: Creatine phosphate
- 蛋白质合成所需能量来自 A: ATP，GTP B: ATP C: GTP D: GDP
- The main storage form of high energy phosphate bond in muscle cell is A: ATP B: GTP C: UTP D: CTP E: Creatine phosphate