<P> The malate - aspartate shuttle (sometimes also the malate shuttle) is a biochemical system for translocating electrons produced during glycolysis across the semipermeable inner membrane of the mitochondrion for oxidative phosphorylation in eukaryotes . These electrons enter the electron transport chain of the mitochondria via reduction equivalents to generate ATP . The shuttle system is required because the mitochondrial inner membrane is impermeable to NADH, the primary reducing equivalent of the electron transport chain . To circumvent this, malate carries the reducing equivalents across the membrane . </P> <P> The shuttle consists of four protein parts: </P>

What molecule is changed into alpha-ketoglutarate in the malate/aspartate shuttle