Abstract
Pyruvate dehydrogenase, isocitrate dehydrogenase, and a-ketoglutarate dehydrogenase of the mitochondrial matrix have been shown to have increased activities in the presence of Ca2+ ions in vitro (Denton and McCormack, 1985; Hansford, 1985). However, these studies were conducted modulating isolated enzyme activity, and show increases in substrate affinity, but not universally in maximum ve…