Each of the following is true for the mechanism of the Na+/K+ ATPase pump except
A) the E2 conformation is open to the outside of the cell and has high affinity for K+.
B) the E1 conformation is open to the inside of the cell and has high affinity for Na+.
C) Na+ triggered phosphorylation of the pump stabilizes the E2 conformation.
D) K+ triggered dephosphorylation of the pump stabilizes the E2 conformation.
E) Each E1-E2 cycle pumps 3 Na+ ions out and 2 K+ ions in.
Answer: D
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