Searching for enzyme using NAD(P)H and ADP ---> NAD(P)+ and ATP

[Karl Fischer]

  I am searching
> for a *single* enzyme which catalyzes a reaction ultimately converting
> ADP to ATP (presumably using NAD(P)H.

David,

According to the volume of Stryer's Biochemistry I have before me,
nucleoside diphosphokinase is able to transfer the phosphoryl group from
GTP to ADP to yield GDP and ATP.

Hope this helped.

Karl the hepB guy

-- 
Karl Fischer
tyr-2 at bones.biochem.ualberta.ca