SHMT1 (Serine Hydroxymethyltransferase 1): SHMT1 catalyzes the conversion of serine and tetrahydrofolate to glycine and methylenetetrahydrofolate, crucial for nucleotide synthesis and methylation reactions. Its function is vital for DNA replication and repair, impacting cell proliferation and genetic stability. SHMT1's role in folate metabolism links it to cancer risk and neurological disorders....