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Understanding the MTHFR Gene: Functions, Variants, and Implications

The MTHFR (Methylenetetrahydrofolate Reductase) gene is a key player in a critical metabolic process known as methylation, which is essential for DNA synthesis, repair, and overall cellular function. The enzyme produced by the MTHFR gene converts 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, the active form of folate. This active folate is crucial for converting homocysteine into methionine, an amino acid necessary for many biological functions, including the synthesis of proteins and neurotransmitters.