Which of the following is a correct association?
A) kinase activity and the addition of a tyrosine
B) phosphodiesterase activity and the removal of phosphate groups
C) GTPase activity and hydrolysis of GTP to GDP
D) adenylyl cyclase activity and the conversion of cAMP to AMP

Question

Quizplus · Accepted Answer

GTPase activity refers to the enzymatic hydrolysis of GTP (guanosine triphosphate) to GDP (guanosine diphosphate). This hydrolysis is often used to regulate G-protein signaling pathways in cells. The other choices are incorrect because kinase activity involves the addition of a phosphate group (not a tyrosine), phosphodiesterase activity involves the breakdown of phosphodiester bonds (not the removal of phosphate groups), and adenylyl cyclase activity involves the conversion of ATP to cAMP (not the conversion of cAMP to AMP).

Which of the Following Is a Correct Association