Involved in pyrimidine base degradation. Catalyzes the reduction of uracil and thymine. Also involved the degradation of the chemotherapeutic drug 5-fluorouracil. Homodimer. Found in most tissues with greatest activity found in liver and peripheral blood mononuclear cells. Belongs to the dihydropyrimidine dehydrogenase family. Note: This description may include information from UniProtKB.
Protein type: EC 18.104.22.168; Other Amino Acids Metabolism - beta-alanine; Xenobiotic Metabolism - drug metabolism - other enzymes; Nucleotide Metabolism - pyrimidine; Oxidoreductase; Cofactor and Vitamin Metabolism - pantothenate and CoA biosynthesis
Cellular Component: cytoplasm; cytosol
Molecular Function: protein homodimerization activity; FAD binding; dihydroorotate oxidase activity; 4 iron, 4 sulfur cluster binding; metal ion binding; dihydropyrimidine dehydrogenase (NADP+) activity; NADP binding
Biological Process: pyrimidine nucleoside catabolic process; pyrimidine base metabolic process; nucleobase, nucleoside and nucleotide metabolic process; UMP biosynthetic process; uracil catabolic process; beta-alanine biosynthetic process; thymine catabolic process; purine base catabolic process; thymidine catabolic process; pyrimidine base catabolic process
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.