Which B-vitamin complex components function as coenzymes in energy metabolism?

The components of the B-vitamin complex that function as coenzymes in energy metabolism are primarily involved in the biochemical pathways that convert nutrients into energy. Thiamine (vitamin B1) plays a crucial role in carbohydrate metabolism by acting as a coenzyme in the decarboxylation of pyruvate, which is essential for the conversion of glucose into energy. Riboflavin (vitamin B2) contributes to energy production by serving as a coenzyme for flavoproteins, which participate in electron transport and energy production in the Krebs cycle. Niacin (vitamin B3) is vital for the formation of NAD and NADPH, which are key coenzymes in the energy-producing processes including glycolysis and the Krebs cycle.

Together, these three vitamins work collaboratively in the energy conversion processes, making them essential for maintaining optimal energy levels and metabolic function in the body.