MMUT (Methylmalonyl-CoA mutase): MMUT is a critical enzyme involved in the metabolism of branched-chain amino acids and fatty acids. Specifically, MMUT catalyzes the conversion of methylmalonyl-CoA to succinyl-CoA, an essential step in the breakdown of certain amino acids and lipids for energy production. This process occurs within the mitochondria, where MMUT helps maintain cellular energy balance and provides substrates for the citric acid cycle. Deficiencies in MMUT activity, often due to mutations in the MMUT gene, can lead to methylmalonic acidemia (MMA), a rare inherited metabolic disorder characterized by the accumulation of methylmalonic acid and its metabolites in the body. MMA...