Question

How are e- transported in the glycerol phosphate shuttle?

Answer 1

The e- in the glycerol phosphate shuttle are transported through a series of chemical reactions in the inner mitochondrial membrane. The shuttle uses two enzyme-catalyzed reactions to move e- from cytosolic NADH to the mitochondrial electron transport chain.

Step-by-step explanation:

The e- in the glycerol phosphate shuttle are transported through a series of chemical reactions in the inner mitochondrial membrane. The shuttle uses two enzyme-catalyzed reactions to move e- from cytosolic NADH to the mitochondrial electron transport chain. Here is the step-by-step process of e- transport in the glycerol phosphate shuttle:

1. Step 1: In the cytosol, NADH transfers its e- to the enzyme glycerol-3-phosphate dehydrogenase, forming glycerol-3-phosphate.
2. Step 2: Glycerol-3-phosphate is then transported across the mitochondrial membrane by a specific protein carrier.
3. Step 3: Once in the mitochondrial matrix, glycerol-3-phosphate is oxidized back to dihydroxyacetone phosphate by another enzyme, glycerol-3-phosphate dehydrogenase.
4. Step 4: The e- released during the oxidation of glycerol-3-phosphate are transferred to the electron transport chain, where they contribute to the production of ATP.