Uracil N-glycosylase
The UNG gene encodes an N-glycosylase which is involved in single nucleotide DNA repair. Mutations cause autosomal recessive Hyper-IgM syndrome 5 and and an accumulation of mutations in the mitochondrial DNA.
Gene Structure
The gene has two different promotors and splice variant that target mitochondria and nucleus and are named UNG1 und UNG2 respectivelty. The UNG1 protein contains a mitochondrial targeting sequence.
Genetests:
Related Diseases:
References:
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Aasland R et al. (1990) Chromosomal assignment of human uracil-DNA glycosylase to chromosome 12.
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Studebaker AW et al. (2005) Depletion of uracil-DNA glycosylase activity is associated with decreased cell proliferation.
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3. |
Kavli B et al. (2005) B cells from hyper-IgM patients carrying UNG mutations lack ability to remove uracil from ssDNA and have elevated genomic uracil.
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4. |
Begum NA et al. (2004) Uracil DNA glycosylase activity is dispensable for immunoglobulin class switch.
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5. |
Elder RT et al. (2003) A fission yeast homologue of the human uracil-DNA-glycosylase and their roles in causing DNA damage after overexpression.
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6. |
Caradonna S et al. (2001) The nature of enzymes involved in uracil-DNA repair: isoform characteristics of proteins responsible for nuclear and mitochondrial genomic integrity.
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7. |
Kavli B et al. (2002) hUNG2 is the major repair enzyme for removal of uracil from U:A matches, U:G mismatches, and U in single-stranded DNA, with hSMUG1 as a broad specificity backup.
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8. |
Dinner AR et al. (2001) Uracil-DNA glycosylase acts by substrate autocatalysis.
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9. |
Nilsen H et al. (2000) Uracil-DNA glycosylase (UNG)-deficient mice reveal a primary role of the enzyme during DNA replication.
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10. |
Haug T et al. (1998) Regulation of expression of nuclear and mitochondrial forms of human uracil-DNA glycosylase.
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11. |
Haug T et al. (1996) Human uracil-DNA glycosylase gene: sequence organization, methylation pattern, and mapping to chromosome 12q23-q24.1.
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12. |
Caradonna S et al. (1996) Affinity purification and comparative analysis of two distinct human uracil-DNA glycosylases.
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13. |
Haug T et al. (1994) Structure of the gene for human uracil-DNA glycosylase and analysis of the promoter function.
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14. |
Vollberg TM et al. (1989) Isolation and characterization of the human uracil DNA glycosylase gene.
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15. |
Olsen LC et al. (1989) Molecular cloning of human uracil-DNA glycosylase, a highly conserved DNA repair enzyme.
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16. |
Imai K et al. (2003) Human uracil-DNA glycosylase deficiency associated with profoundly impaired immunoglobulin class-switch recombination.
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17. |
NCBI article
NCBI 7374
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18. |
OMIM.ORG article
Omim 191525
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19. |
Orphanet article
Orphanet ID 120421
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20. |
Wikipedia article
Wikipedia EN (Uracil-DNA_glycosylase)
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Update: Aug. 14, 2020