Inhibitory Effect of Bicarbonate on ATP Levels and Cholesterol Biosynthesis in Liver Homogenates.

Abstract
Bicarbonate is a potent inhibitor of a system essential for maintenance of ATP levels that are required for conversion of mevalonic acid to non-saponifiable material (largely cholesterol) by liver homogenates. This bicarbonate inhibition, over a narrow range of concentration, is reversed by trypsin-ized protamine or by amino acids of the urea cycle or by canavanine.