This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin, hormones, and drugs, into water-soluble, excretable metabolites. This gene is part of a complex locus that encodes several UDP-glucuronosyltransferases. The locus includes thirteen unique alternate first exons followed by four common exons. Four of the alternate first exons are considered pseudogenes. Each of the remaining nine 5' exons may be spliced to the four common exons, resulting in nine proteins with different N-termini and identical C-termini. Each first exon encodes the substrate binding site, and is regulated by its own promoter.
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Yea SS, Lee SS, Kim WY, et al. (2008). "Genetic variations and haplotypes of UDP-glucuronosyltransferase 1A locus in a Korean population.". Ther Drug Monit30 (1): 23–34. doi:10.1097/FTD.0b013e3181633824. PMID18223459.
van Es HH, Bout A, Liu J, et al. (1993). "Assignment of the human UDP glucuronosyltransferase gene (UGT1A1) to chromosome region 2q37". Cytogenet. Cell Genet.63 (2): 114–6. doi:10.1159/000133513. PMID8467709.