A new transport protein is found to undergo a cycle of phosphorylation-dephosphorylation during the movement of selenium ion into cells. To which of the following would you expect the sequence of this protein to be related ?

Question

Quizplus · Accepted Answer

The cycle of phosphorylation-dephosphorylation is characteristic of P-type ATPases, such as the Ca2+ ATPase (represented in the choices as Ca²⁺- ATPase), which actively transport ions across membranes using ATP hydrolysis to drive the transport.

A New Transport Protein Is Found to Undergo a Cycle