Enables several functions, including nucleotide binding activity; oxidoreductase activity, acting on the CH-CH group of donors, NAD or NADP as acceptor; and protein homodimerization activity. Involved in several processes, including pyrimidine nucleobase metabolic process; response to glucocorticoid; and response to nutrient. Located in cytosol. Used to study colorectal cancer. Biomarker of liver disease. Human ortholog(s) of this gene implicated in acute lymphoblastic leukemia; dihydropyrimidine dehydrogenase deficiency; and pancreatic cancer. Orthologous to human DPYD (dihydropyrimidine dehydrogenase). [provided by Alliance of Genome Resources, Apr 2022]