Nomenclature update for the mammalian UDP glycosyltransferase (UGT) gene superfamily
Abstract
Several novel UDP glycosyltransferase (UGT) genes, mainly UDP glucuronosyltransferases, have been identified in the human, mouse and rat genomes and in other mammalian species. This review provides an update of the UGT nomenclature to include these new genes and prevent the confusion that arises when the same gene is given different names. The new genes are named following previously established recommendations, taking into consideration evolutionary relatedness and the names already in general usage in the literature. The mammalian UGT gene superfamily currently has 117 members that can be divided into four families, UGT1, UGT2, UGT3 and UGT8. The 5-exon genes of the UGT1 family each contain a unique first exon, plus four exons that are shared between the genes; the exons 1 appear to have evolved by a process of duplication, leading to the synthesis of proteins with identical carboxyl-terminal and variable amino-terminal domains. Exon-sharing is also seen with the 6-exon UGT2A1 and UGT2A2 genes. However, UGT2A3 and those of the UGT2B (six exons), UGT3 (seven exons) and UGT8 gene families (five or six exons) do not share exons and most likely were derived by a process of duplication of all exons in the gene. Most UGT1 and UGT8 enzymes have been characterized in detail; however, the catalytic functions of the UGT3A enzymes and several UGT2 enzymes remain to be characterized.
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This represents a very large diversification in these gene families relative to mammals, whose genome contains 13 SULT, 13 UGT, and 17 GST genes.
“This represents a very large diversification in these gene families relative to those in mammals: the human genome contains 13 SULT, 13 UGT and 17 GST genes”
From The chemical defensome: Environmental sensing and response genes in the Strongylocentrotus purpuratus genome (2006) · cites this paper as Mackenzie et al., 2005
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- Authors
- Mackenzie, P. I., Walter Bock, K., Burchell, B., Guillemette, C., Ikushiro, S.-I., Iyanagi, T., Miners, J. O., Owens, I. S., & Nebert, D. W.
- Affiliations
- Flinders University (AU)
- Canadian Institutes of Health Research (CA)
- National Institutes of Health (US)
- Corresponding author
- Mackenzie, Peter I.
- Venue
- Pharmacogenetics and Genomics
- Published
- 2005-10
- Volume
- 15
- Issue
- 10
- Pages
- 677-685
- ISSN
- 1744-6872 (ISSN-L)
- OpenAlex
- W2061587734
- Cited by
- 821
- References
- 17
- Citations by year
- 2026: 11 · 2025: 12 · 2024: 18 · 2023: 18 · 2022: 23 · 2021: 25 · 2020: 23 · 2019: 33 · 2018: 44 · 2017: 46 · 2016: 34 · 2015: 46 · 2014: 55 · 2013: 53 · 2012: 65
- FWCI
- 33.89
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Pharmacogenetics and Genomics (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of Environmental Health Sciences (P30ES006096, P30 ES-06096)
- Topics
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
- Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
- Keywords
- UDP-glycosyltransferase, gene nomenclature, gene duplication, UDP-glucuronosyltransferase, mammalian genomes, gene structure evolution
- MeSH terms
- Animals, Multigene Family, Humans, Terminology as Topic, Phylogeny, Glucuronosyltransferase, Evolution, Molecular
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