Question

identify the coenzyme forms of the following b vitamins that function in energy metabolism. thiamin (click to select) riboflavin (click to select) niacin tpp vitamin b - 6 fad pantothenic acid nad plp coa

Explanation:

• Thiamin: Its coenzyme form is Thiamin pyrophosphate (TPP). It is involved in decarboxylation reactions in energy metabolism.
• Riboflavin: The coenzyme forms are Flavin adenine dinucleotide (FAD) and Flavin mononucleotide (FMN). FAD is a common coenzyme in oxidation - reduction reactions in energy - related pathways like the citric acid cycle.
• Niacin: The coenzyme forms are Nicotinamide adenine dinucleotide (NAD⁺) and Nicotinamide adenine dinucleotide phosphate (NADP⁺). NAD⁺ is crucial in many redox reactions in glycolysis, the citric acid cycle, etc.
• Vitamin B - 6: The coenzyme form is Pyridoxal phosphate (PLP). It is involved in amino acid metabolism which is connected to energy metabolism as amino acids can be used for energy production.
• Pantothenic acid: The coenzyme form is Coenzyme A (CoA). CoA is involved in the transfer of acyl groups, for example, in the formation of acetyl - CoA from pyruvate (a key step in connecting glycolysis to the citric acid cycle for energy production).

Answer:

Thiamin: TPP
Riboflavin: FAD
Niacin: NAD
Vitamin B - 6: PLP
Pantothenic acid: CoA