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Cofactor for L-methylmalonyl-coenzyme A mutase 5-Deoxyadenosylcobalamin is required by the enzyme that catalyzes the conversion of L-methylmalonyl-coenzyme A to succinyl-coenzyme A (succinyl-CoA), which then enters the citric acid cycle ( Figure 2 )

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Funding This work was partially supported by the National Key Research and Development Program of China (2020YFA0908300), the Jiangsu Provincial Natural Science Foundation (No