METABOLIC DISORDERS OF FOLATE CASCADE PROCESS
Keywords:
folate cycle, vitamin B12, methionine synthases, DNA and RNA.Abstract
The folate cycle is a cascade process of converting folic acid into a derivative available for absorption by the body, 5-methyltetrahydrofolate. The process is controlled by the enzyme methylenetetrahydrofolate reductase (MTHFR). Folate metabolism is a source of one-carbon fragments (methyl group -CH3) for vital cellular processes: purine nucleotide biosynthesis and conversion of uridine monophosphate into thymidylate; DNA and RNA methylation.
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