Enzymes involved in folate metabolism and DNA synthesis

Enzymes involved in folate metabolism and DNA synthesis comprise a group of metabolic proteins essential for generating nucleotides required for both de novo purine and thymidylate biosynthesis. Key examples include phosphoribosylglycinamide formyltransferase, phosphoribosylaminoimidazolecarboxamide formyltransferase, 5-methyltetrahydrofolate-homocysteine S-methyltransferase, methionine adenosyl transferase, and others. These enzymes support the production of adenine and guanine precursors as well as thymidine monophosphate—critical building blocks for DNA replication and repair. They also generate S‐adenosylmethionine, which is vital for methylation reactions including epigenetic regulation via DNA methylation. Disruption or inhibition of these pathways can lead to genome instability, increased cancer risk, birth defects such as neural tube defects, and other diseases related to one-carbon metabolism. Note: This entry refers collectively to a group rather than a single molecular entity; it is not standard practice to treat "enzymes involved in folate metabolism and DNA synthesis" as one canonical target but rather as several distinct targets with overlapping functions. For structured data purposes or drug development efforts, it is preferable to specify individual enzyme names such as "Dihydrofolate reductase," "Thymidylate synthase," etc., each with their own unique properties.

Other names

Folate pathway enzymesOne-carbon metabolism enzymesThymidylate synthesis enzymesPurine biosynthesis enzymes

Inhibition of nucleotide biosynthesis by blocking folate-dependent enzymatic steps, leading to impaired DNA replication and cell division.