Beta-ureidopropionase is an enzyme that in humans is encoded by the UPB1gene.[1][2]
This gene encodes a protein that belongs to the CN hydrolase family. Beta-ureidopropionase catalyzes the last step in the pyrimidine degradation pathway. The pyrimidine bases uracil and thymine are degraded via the consecutive action of dihydropyrimidine dehydrogenase (DHPDH), dihydropyrimidinase (DHP) and beta-ureidopropionase (UP) to beta-alanine and beta-aminoisobutyric acid, respectively. UP deficiencies are associated with N-carbamyl-beta-amino aciduria and may lead to abnormalities in neurological activity.[2]
Interactive pathway map
Click on genes, proteins and metabolites below to link to respective articles.[§ 1]
↑Vreken P, van Kuilenburg AB, Hamajima N, Meinsma R, van Lenthe H, Gohlich-Ratmann G, Assmann BE, Wevers RA, van Gennip AH (Dec 1999). "cDNA cloning, genomic structure and chromosomal localization of the human BUP-1 gene encoding beta-ureidopropionase". Biochim Biophys Acta. 1447 (2–3): 251–7. doi:10.1016/s0167-4781(99)00182-7. PMID10542323.
Thomas HR, Ezzeldin HH, Guarcello V, et al. (2008). "Genetic regulation of beta-ureidopropionase and its possible implication in altered uracil catabolism". Pharmacogenet. Genomics. 18 (1): 25–35. doi:10.1097/FPC.0b013e3282f2f134. PMID18216719.
Thomas HR, Ezzeldin HH, Guarcello V, et al. (2008). "Genetic regulation of dihydropyrimidinase and its possible implication in altered uracil catabolism". Pharmacogenet. Genomics. 17 (11): 973–87. doi:10.1097/FPC.0b013e3282f01788. PMID18075467.
van Kuilenburg AB, Meinsma R, Assman B, et al. (2007). "Genetic analysis of the first 4 patients with beta-ureidopropionase deficiency". Nucleosides Nucleotides Nucleic Acids. 25 (9–11): 1093–8. doi:10.1080/15257770600956870. PMID17065070.
van Kuilenburg AB, Meinsma R, Beke E, et al. (2006). "beta-Ureidopropionase deficiency: an inborn error of pyrimidine degradation associated with neurological abnormalities". Hum. Mol. Genet. 13 (22): 2793–801. doi:10.1093/hmg/ddh303. PMID15385443.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
Sakamoto T, Sakata SF, Matsuda K, et al. (2002). "Expression and properties of human liver beta-ureidopropionase". J. Nutr. Sci. Vitaminol. 47 (2): 132–8. doi:10.3177/jnsv.47.132. PMID11508704.
Naguib FN, el Kouni MH, Cha S (1985). "Enzymes of uracil catabolism in normal and neoplastic human tissues". Cancer Res. 45 (11 Pt 1): 5405–12. PMID3931905.
