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Pyrimidine Biosynthesis Pathway
- Molecular classification
- Enzyme pathways
01
Overview
The Pyrimidine Biosynthesis Pathway is a biochemical pathway essential for the production of pyrimidine nucleotides, which are critical for DNA and RNA synthesis. It involves key enzymes like carbamoyl phosphate synthetase II, aspartate carbamoyltransferase, dihydroorotate dehydrogenase, and orotate phosphoribosyltransferase. This pathway is crucial for cell proliferation and is targeted therapeutically in conditions like cancer and autoimmune diseases by drugs that inhibit specific enzymes within the pathway.
- Other names
- Pyrimidine De Novo Synthesis PathwayPyrimidine Anabolic Pathway
02
Mechanism of action
Inhibition of key enzymes: Targeting enzymes like DHODH disrupts nucleotide synthesis, impacting cell proliferation
03
Biological functions
Nucleotide synthesis: Essential for DNA and RNA productionCell proliferation: Necessity for cell growth and replicationMembrane synthesis: Involvement in producing phospholipids
04
Disease associations
Cancer: Pathway dysregulation contributes to tumor initiation and progressionNeurodegenerative disease: Altered pathway expression observed in conditions like Alzheimer's diseaseOther: Potential roles in rheumatoid arthritis, psoriatic arthritis, and multiple sclerosis
05
Safety considerations
Toxicity from excessive inhibition: Overinhibition of pyrimidine biosynthesis can impact cell growth and function
06
Interacting drugs
Leflunomide: Inhibits dihydroorotate dehydrogenase (DHODH)
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