Thymine-DNA glycosylase

Thymine-DNA glycosylase

PDB rendering based on 1wyw.
Identifiers
Symbols TDG;
External IDs OMIM601423 HomoloGene2415 GeneCards: TDG Gene
EC number 3.2.2.29
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 6996 n/a
Ensembl ENSG00000139372 n/a
UniProt Q13569 n/a
RefSeq (mRNA) NM_003211 n/a
RefSeq (protein) NP_003202 n/a
Location (UCSC) Chr 12:
104.36 – 104.38 Mb
n/a
PubMed search [1] n/a

G/T mismatch-specific thymine DNA glycosylase is an enzyme that in humans is encoded by the TDG gene.[1][2][3]

The protein encoded by this gene belongs to the TDG/mug DNA glycosylase family. Thymine-DNA glycosylase (TDG) removes thymine moieties from G/T mismatches by hydrolyzing the carbon-nitrogen bond between the sugar-phosphate backbone of DNA and the mispaired thymine. With lower activity, this enzyme also removes thymine from C/T and T/T mispairings. TDG can also remove uracil and 5-bromouracil from mispairings with guanine. This enzyme plays a central role in cellular defense against genetic mutation caused by the spontaneous deamination of 5-methylcytosine and cytosine. This gene may have a pseudogene in the p arm of chromosome 12.[3]

Contents

Interactions

Thymine-DNA glycosylase has been shown to interact with Estrogen receptor alpha,[4] SUMO3,[5] CREB-binding protein,[6] Promyelocytic leukemia protein[7] and Small ubiquitin-related modifier 1.[8][5]

Interactive pathway map

Click on genes, proteins and metabolites below to link to respective Wikipedia articles. [9]

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Fluorouracil (5-FU) Activity edit

References

  1. ^ Neddermann P, Gallinari P, Lettieri T, Schmid D, Truong O, Hsuan JJ, Wiebauer K, Jiricny J (Aug 1996). "Cloning and expression of human G/T mismatch-specific thymine-DNA glycosylase". J Biol Chem 271 (22): 12767–74. doi:10.1074/jbc.271.22.12767. PMID 8662714. 
  2. ^ Sard L, Tornielli S, Gallinari P, Minoletti F, Jiricny J, Lettieri T, Pierotti MA, Sozzi G, Radice P (Dec 1997). "Chromosomal localizations and molecular analysis of TDG gene-related sequences". Genomics 44 (2): 222–6. doi:10.1006/geno.1997.4843. PMID 9299239. 
  3. ^ a b "Entrez Gene: TDG thymine-DNA glycosylase". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=6996. 
  4. ^ Chen, Dongsheng; Lucey Marie J, Phoenix Fladia, Lopez-Garcia Jorge, Hart Stephen M, Losson Régine, Buluwela Lakjaya, Coombes R Charles, Chambon Pierre, Schär Primo, Ali Simak (Oct. 2003). "T:G mismatch-specific thymine-DNA glycosylase potentiates transcription of estrogen-regulated genes through direct interaction with estrogen receptor alpha". J. Biol. Chem. (United States) 278 (40): 38586–92. doi:10.1074/jbc.M304286200. ISSN 0021-9258. PMID 12874288. 
  5. ^ a b Hardeland, Ulrike; Steinacher Roland, Jiricny Josef, Schär Primo (Mar. 2002). "Modification of the human thymine-DNA glycosylase by ubiquitin-like proteins facilitates enzymatic turnover". EMBO J. (England) 21 (6): 1456–64. doi:10.1093/emboj/21.6.1456. ISSN 0261-4189. PMC 125358. PMID 11889051. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=125358. 
  6. ^ Tini, Marc; Benecke Arndt, Um Soo-Joong, Torchia Joseph, Evans Ronald M, Chambon Pierre (Feb. 2002). "Association of CBP/p300 acetylase and thymine DNA glycosylase links DNA repair and transcription". Mol. Cell (United States) 9 (2): 265–77. doi:10.1016/S1097-2765(02)00453-7. ISSN 1097-2765. PMID 11864601. 
  7. ^ Takahashi, Hidehisa; Hatakeyama Shigetsugu, Saitoh Hisato, Nakayama Keiichi I (Feb. 2005). "Noncovalent SUMO-1 binding activity of thymine DNA glycosylase (TDG) is required for its SUMO-1 modification and colocalization with the promyelocytic leukemia protein". J. Biol. Chem. (United States) 280 (7): 5611–21. doi:10.1074/jbc.M408130200. ISSN 0021-9258. PMID 15569683. 
  8. ^ Minty, A; Dumont X, Kaghad M, Caput D (Nov. 2000). "Covalent modification of p73alpha by SUMO-1. Two-hybrid screening with p73 identifies novel SUMO-1-interacting proteins and a SUMO-1 interaction motif". J. Biol. Chem. (UNITED STATES) 275 (46): 36316–23. doi:10.1074/jbc.M004293200. ISSN 0021-9258. PMID 10961991. 
  9. ^ The interactive pathway map can be edited at WikiPathways: "FluoropyrimidineActivity_WP1601". http://www.wikipathways.org/index.php/Pathway:WP1601. 

Further reading