DNA glycosylase

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[[Image:1akz.png|left|200px|thumb|Crystal Structure of DNA glycosylate, [[1akz]]]]
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<StructureSection load='' size='340' side='right' caption='Structure of adenine DNA glycosylase containing Fe4S4 cluster complex with DNA containing an oxoG base, deoxy-ribofuranose phosphate and Ca+2 ion (green) (PDB code [[1rrs]]).' scene='44/445369/Cv/1'>
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{{STRUCTURE_3fsp| PDB=3fsp | SIZE=400| SCENE= |right|CAPTION=Adenine DNA glycosylate complex with DNA, Fe4-S4 cluster, phosphoric acid esther and Ca+2 ion [[3fsp]] }}
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__TOC__
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== Function ==
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'''DNA glycosylase''' (DG) are enzymes which remove damaged DNA bases by flipping them out of the double helix followed by their cleavage. Monofunctional DG have only glycosylase activity; bifunctional DG also act as lysates; ADG, UDG, TDG remove adenine, uracil, thymine from DNA.<ref>PMID:15102448</ref><br />
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* '''Adenine DNA glycosylase''' is also called '''MutY'''. MutY has a role in prevention of DNA mutations resulting from oxidative damage forming the mutated base oxoG. DNA polymerase misreads oxoG and pairs it with adenine instead of cytosine. MutY removes adenine from the mismatched oxoG:A pair. MutY contains a 4Fe4S cluster.<br />
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* '''Uracil DNA glycosylase''' (UDG) eliminates uracil from DNA and thus preventing mutagenesis. UDG initiates the base excision repair pathway. UDG excises uracil in both AU and GU pairs. UDG can repair 10,000 damaged bases in the human cell per day<ref>PMID:9882380</ref>. See also [[DNA Repair]].
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* '''Thymine DNA glycosylase''' removes thymine moieties from mismatched G/T, C/T and T/T.<br />
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'''DNA glycosylase''' (DG) are enzymes which remove damaged DNA bases by flipping them out of the double helix followed by their cleavage. Monofunctional DG have only glycosylase activity; bifunctional DG also act as lysates; ADG, UDG, TDG remove adenine, uracil, thymine from DNA.<br />
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* '''Adenine DNA glycosylase''' is also called '''MutY'''.<br />
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* '''Smug1''' is a single-strand selective monofunctional UDG. <br />
* '''Smug1''' is a single-strand selective monofunctional UDG. <br />
* '''8-oxoguanine DNA glycosylase''' recognize oxidized bases.<br />
* '''8-oxoguanine DNA glycosylase''' recognize oxidized bases.<br />
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*[[Fpg Nei Protein Superfamily]].
*[[Fpg Nei Protein Superfamily]].
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== 3D Structures of DNA glycosylate ==
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== Structural highlights ==
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Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
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{{#tree:id=OrganizedByTopic|openlevels=0|
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*Adenine DG
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**[[3n5n]] – hADG catalytic domain – human<BR />
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**[[1yuo]] - hADG catalytic domain (mutant) <BR />
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**[[1x51]] – hADG NUDIX domain - NMR<BR />
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**[[3fsp]], [[3fsq]] – GsADG + DNA – ''Geobacillus stearothermophilus''<BR />
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**[[3g0q]], [[1vrl]], [[1rrq]], [[1rrs]] - GsADG (mutant) + DNA – ''Bacillus stearothermophilus''<BR />
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**[[1wef]], [[1weg]], [[1kg4]], [[1kg5]], [[1kg6]], [[1kg7]], [[1kqj]] - EcADG catalytic domain (mutant) - ''Escherichia coli''<BR />
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**[[1kg2]], [[1kg3]], [[1muy]] - EcADG catalytic domain<BR />
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**[[1mun]] - EcADG catalytic domain (mutant) <BR />
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**[[1wei]], [[1mud]] - EcADG catalytic domain (mutant) + adenine
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*Uracil DG
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**[[3a7n]] – MtUDG – ''Mycobacterium tuberculosis''<BR />
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**[[2zhx]] – MtDG + protein inhibitor<BR />
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**[[1akz]] - hUDG (mutant) <BR />
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**[[2oxm]], [[2oyt]], [[1q3f]] – hUDG + DNA<BR />
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**[[1ssp]], [[2ssp]] - hUDG + DNA+ uracil<BR />
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**[[1emh]], [[1emj]], [[4skn]] – hUDG (mutant) + DNA<BR />
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**[[3fcf]], [[3fci]], [[3fck]], [[3fcl]], [[2hxm]] – hUDG + inhibitor<BR />
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**[[1ugh]] - hUDG (mutant) + protein inhibitor<BR />
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**[[2jhq]] – UDG – ''Vibrio cholerae''<BR />
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**[[3cxm]] – UDG residues 129-373 + 5-bromo-uracil<BR />
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**[[2owq]], [[2owr]] – UDG (mutant) – Vaccinia virus<BR />
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**[[2d3y]], [[1ui0]], [[1ui1]] – TtUDG – ''Thermus thermophilus''<BR />
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**[[2dp6]], [[2dem]], [[2ddg]] – TtUDG + DNA<BR />
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**[[2j8x]] – UDG glycosylase domain + protein inhibitor – Epstein-Barr virus<BR />
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**[[1lqj]] – EcUDG<BR />
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**[[1flz]] - EcUDG (mutant) <BR />
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**[[2eug]], [[3eug]], [[1eug]], [[4eug]], [[5eug]] - EcUDG (mutant) + uracil<BR />
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**[[1mwj]], [[1mwi]], [[1mtl]] – EcUDG + DNA<BR />
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**[[1lqg]], [[1lqm]], [[1eui]], [[1uug]] - EcUDG + protein inhibitor<BR />
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**[[2uug]] - EcUDG (mutant) + protein inhibitor<BR />
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**[[2c53]], [[2c56]] – HhUDG (mutant) – Human herpesvirus<BR />
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**[[1lau]] – HhUDG + DNA<BR />
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**[[1udh]], [[1udg]] – HsUDG _ Herpes simplex virus<BR />
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**[[1udi]] - HsUDG + protein inhibitor<BR />
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**[[2c2p]], [[2boo]] – DrUDG – ''Deinococcus radiodurans''<BR />
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**[[2c2q]] – DrUDG (mutant) <BR />
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**[[1vk2]], [[1l9g]] – TmUDG - ''Thermotoga maritime''<BR />
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**[[1okb]] – UDG catalytic domain – Atlantic cod
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*Smug1 Uracil DG
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**[[1oe4]], [[1oe5]], [[1oe6]] – UDG Smug1 + DNA– ''Xenopus laevis''
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*Thymine DG
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**[[2rba]] – hTDG core domain + DNA<BR />
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**[[2d07]], [[1wyw]] – hTDG central region + SUMO-3<BR />
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**[[1kea]] – TDG – ''Methanothermobacter thermautotrophicus''<BR />
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**[[1mug]] – EcTDG
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*Human 8-oxoguanine DG
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**[[1ko9]] – hOgg1<BR />
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**[[2xhi]], [[3ktu]], [[1hu0]], [[1fn7]] - hOgg1 + DNA<BR />
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**[[1lwv]], [[1lww]], [[1lwy]] - hOgg1 + DNA<BR /> + guanine derivative<BR />
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**[[2nob]], [[2noe]], [[2nof]], [[2noh]], [[2noi]], [[2nol]], [[2noz]], [[2i5w]], [[1yqk]], [[1yql]], [[1yqm]], [[1yqr]], [[1n39]], [[1n3a]], [[1n3c]] - hOgg1 (mutant) + DNA<BR />
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**[[1m3h]], [[3ih7]] - hOgg1 core fragment (mutant) + DNA<BR />
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**[[1m3q]], [[1ebm]] - hOgg1 core fragment (mutant) + DNA + guanine derivative
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*8-oxoguanine (oxoG) DG
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**[[3n0u]] – TmOxDG<BR />
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**[[3knt]] - MjOxDG (mutant) + DNA – ''Methanocaldococcus jannaschii''<BR />
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**[[3fhf]] - MjOxDG<BR />
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**[[3go8]], [[3gp1]], [[3gpp]], [[3gpu]], [[3gpx]], [[3gpy]], [[3gq3]], [[3gq4]], [[3gq5]] – GsOxDG (mutant) + DNA<BR />
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**[[3f0z]] - CaOxDG – ''Clostridium acetobutylicum''<BR />
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**[[3f10]] – CaOxDG + oxoG<BR />
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**[[3i0w]], [[3i0x]] - CaOxDG (mutant) + DNA<BR />
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**[[3fhg]] - OxDG (mutant) – ''Sulfolobus solfataricus''<BR />
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**[[1xqo]], [[1xqp]] – OxDG – ''Pyrobaculum aerophilum''<br />
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**[[4ejy]], [[4ejz]] – OxDG + DNA – ''Thermoanaerobacter tengcongensis''<br />
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*Methyladenine DG
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**[[3qi5]], [[1ewn]], [[1f4r]], [[1f6o]], [[1bnk]] – hAlkDG + DNA<BR />
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**[[3bvs]] – BcAlkDG – ''Bacillus cereus''<BR />
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**[[3jx7]], [[3jxy]], [[3jxz]], [[3jy1]] - BcAlkDG + DNA<BR />
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**[[1pvs]], [[1p7m]], [[1mpg]] – EcAlkDG<BR />
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**[[1nku]], [[1lmz]] – EcAlkDG - NMR<BR />
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**[[3ogd]], [[3oh6]], [[3oh9]] - EcAlkDG (mutant) + DNA<BR />
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**[[3d4v]], [[3cvs]], [[3cvt]], [[3cw7]], [[3cwa]], [[3cws]], [[3cwt]], [[3cwu]], [[1diz]] - EcAlkDG + DNA<BR />
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**[[2ofk]] – StAlkDG – ''Salmonella typhi''<BR />
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**[[2ofi]] – StAlkDG + DNA<BR />
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**[[2jhj]], [[2jhn]] – AlkDG – ''Archaeoglobus fulgidus''<BR />
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**[[2jg6]] – AlkDG – ''Staphylococcus aureus''<BR />
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**[[1pu6]] – HpAlkDG – ''Helicobacter pylori''<BR />
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**[[1pu7]], [[1pu8]] – HpAlkDG + adenine derivative
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*Formamidopyrimidine DG
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**[[1ee8]] – TtFpg <br />
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**[[3a42]], [[3a45]] – ApFpg – ''Acanthamoeba polyphaga'' minivirus<br />
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**[[3twk]], [[3twl]] – AtFpg - ''Arabidopsis thaliana''<br />
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*''Fpg complex with DNA''
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**[[1k82]] – EcFpg + DNA <br />
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**[[1kfv]], [[1nnj]] – LlFpg (mutant) + DNA – ''Lactococcus lactis''<br />
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**[[1l1t]], [[1l1z]], [[1l2b]], [[1l2c]] – GsFpg + DNA <br />
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**[[2f5n]], [[2f5o]], [[2f5p]], [[3gpx]], [[3gq5]] – GsFpg (mutant) + DNA <br />
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*''Fpg complex with DNA containing a damaged base''
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MutY uses base flipping to twist the mispaired adenine out of the DNA helix and into the MutY active site. MutY contains 2 domains: C-terminal domain and catalytic domain containing a helix-hairpin-helix.
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*<scene name='44/445369/Cv/9'>Adenine DNA glycosylase containing Fe4S4 cluster with DNA containing an mispaired adenine 8OG and Ca+2</scene>.
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*<scene name='44/445369/Cv/10'>Mispaired adenine 8OG binding site</scene>.
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*<scene name='44/445369/Cv/11'>Fe4S4 cluster binds to 3 Cys residues</scene>.
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*<scene name='44/445369/Cv/12'>Ca+2 ion coordination site</scene> (PDB code [[1rrs]])<ref>PMID:14961129</ref>. Water molecules shown as red spheres.
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**[[1r2y]], [[2f5q]], [[2f5s]], [[3jr5]], [[3gp1]], [[3gpp]], [[3gpu]], **[[3gpy]], [[3gq3]], [[3gq4]], [[3go8]], [[3u6c]], [[3u6d]] – GsFpg (mutant) + DNA containing oxoG<br />
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== 3D Structures of DNA glycosylase ==
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**[[3u6e]], [[4g4o]], [[4g4r]] – GsFpg (mutant) + DNA containing oxoG and thymidine derivative <br />
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[[DNA glycosylase 3D structures]]
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**[[3u6l]], [[3u6m]], [[3u6q]] – GsFpg (mutant) + DNA containing oxoG and cytidine derivative <br />
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**[[1r2z]] – GsFpg (mutant) + DNA containing 5,6-dihydrouracil<br />
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**[[3saw]] – GsFpg + DNA containing cytidine derivative<br />
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**[[3sar]], [[3sav]], [[3sbj]] – GsFpg (mutant) + DNA containing cytidine derivative<br />
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**[[1l2d]], [[3sau]], [[3u6o]], [[3u6p]], [[3u6s]], [[4g4n]], [[4g4q]] – GsFpg (mutant) + DNA containing thymidine derivative<br />
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**[[3sas]], [[3sat]] – GsFpg (mutant) + DNA containing open deoxy-ribofuranose phosphate <br />
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**[[1pm5]] – LlFpg + DNA containing abasic dideoxyribose<br />
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**[[1pjj]] – LlFpg (mutant) + DNA containing abasic dideoxyribose<br />
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**[[4cis]] – LlFpg + DNA containing oxoG derivative<br />
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**[[3twm]] – AtFpg + DNA containing abasic dideoxyribose<br />
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**[[1pji]] – LlFpg + DNA containing 1,3-propanediol<br />
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**[[2xzf]], [[2xzu]] – LlFpg + DNA containing oxidized pyrimidine<br />
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**[[1tdz]], [[1xc8]], [[3c58]] – LlFpg + DNA containing Fapy-dG derivative<br />
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**[[3a46]] – ApFpg + DNA containing abasic dideoxyribose<br />
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**[[4nrw]] – ApFpg (mutant) + DNA containing abasic dideoxyribose<br />
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**[[3vk7]] – ApFpg (mutant) + DNA containing 5-hydroxyuracil <br />
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**[[3vk8]] – ApFpg (mutant) + DNA containing thymine glycol<br />
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**[[3jr4]] – GsFpg (mutant) + DNA + guanosine derivative <br />
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*DNA glycosylase NEI
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</StructureSection>
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**[[2ea0]], [[2opf]], [[2oq4]], [[1k3w]], [[1k3x]] – EcGD NEI + DNA<BR />
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== References ==
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**[[2fcc]] – Pyrimidine GD + DNA – Enterobacteria phage T4<br />
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<references/>
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**[[1q39]] – EcGD NEI<br />
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[[Category:Topic Page]]
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**[[1q3b]], [[1q3c]] – EcGD NEI (mutant)<br />
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**[[1tdh]] – hGD NEI
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}}
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Current revision

Structure of adenine DNA glycosylase containing Fe4S4 cluster complex with DNA containing an oxoG base, deoxy-ribofuranose phosphate and Ca+2 ion (green) (PDB code 1rrs).

Drag the structure with the mouse to rotate

References

  1. ↑ Fromme JC, Banerjee A, Verdine GL. DNA glycosylase recognition and catalysis. Curr Opin Struct Biol. 2004 Feb;14(1):43-9. PMID:15102448 doi:http://dx.doi.org/10.1016/j.sbi.2004.01.003
  2. ↑ Willetts KE, Rey F, Agostini I, Navarro JM, Baudat Y, Vigne R, Sire J. DNA repair enzyme uracil DNA glycosylase is specifically incorporated into human immunodeficiency virus type 1 viral particles through a Vpr-independent mechanism. J Virol. 1999 Feb;73(2):1682-8. PMID:9882380
  3. ↑ Fromme JC, Banerjee A, Huang SJ, Verdine GL. Structural basis for removal of adenine mispaired with 8-oxoguanine by MutY adenine DNA glycosylase. Nature. 2004 Feb 12;427(6975):652-6. PMID:14961129 doi:10.1038/nature02306

Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky, Joel L. Sussman, Jaime Prilusky

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