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| | ==The crystal structure of mismatch specific uracil-DNA glycosylase (MUG) from Deinococcus radiodurans== | | ==The crystal structure of mismatch specific uracil-DNA glycosylase (MUG) from Deinococcus radiodurans== |
| - | <StructureSection load='2c2p' size='340' side='right' caption='[[2c2p]], [[Resolution|resolution]] 1.75Å' scene=''> | + | <StructureSection load='2c2p' size='340' side='right'caption='[[2c2p]], [[Resolution|resolution]] 1.75Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2c2p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Deira Deira]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C2P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2C2P FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2c2p]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans_R1 Deinococcus radiodurans R1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C2P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C2P FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.75Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2c2q|2c2q]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2c2p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c2p OCA], [http://pdbe.org/2c2p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2c2p RCSB], [http://www.ebi.ac.uk/pdbsum/2c2p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2c2p ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2c2p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c2p OCA], [https://pdbe.org/2c2p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c2p RCSB], [https://www.ebi.ac.uk/pdbsum/2c2p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c2p ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/Q9RWF4_DEIRA Q9RWF4_DEIRA] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | ==See Also== | | ==See Also== |
| - | *[[DNA glycosylase|DNA glycosylase]] | + | *[[DNA glycosylase 3D structures|DNA glycosylase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Deira]]
| + | [[Category: Deinococcus radiodurans R1]] |
| - | [[Category: Leiros, I]]
| + | [[Category: Large Structures]] |
| - | [[Category: McSweeney, S]]
| + | [[Category: Leiros I]] |
| - | [[Category: Moe, E]]
| + | [[Category: McSweeney S]] |
| - | [[Category: Smalas, A O]]
| + | [[Category: Moe E]] |
| - | [[Category: Deinococcus radioduran]] | + | [[Category: Smalas AO]] |
| - | [[Category: Dna repair enzyme]] | + | |
| - | [[Category: Hydrolase]] | + | |
| - | [[Category: Mismatch specific dna-glycosylase]] | + | |
| - | [[Category: Mug]] | + | |
| - | [[Category: Radiation resistance]] | + | |
| - | [[Category: Uracil-dna glycosylase]]
| + | |
| Structural highlights
Function
Q9RWF4_DEIRA
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Deinococcus radiodurans is extremely resistant to the effects of ionizing radiation. The source of the radiation resistance is not known, but an expansion of specific protein families related to stress response and damage control has been observed. DNA repair enzymes are among the expanded protein families in D. radiodurans, and genes encoding five different uracil-DNA glycosylases are identified in the genome. Here we report the three-dimensional structure of the mismatch-specific uracil-DNA glycosylase (MUG) from D. radiodurans (drMUG) to a resolution of 1.75 angstroms. Structural analyses suggest that drMUG possesses a novel catalytic residue, Asp-93. Activity measurements show that drMUG has a modified and broadened substrate specificity compared with Escherichia coli MUG. The importance of Asp-93 for activity was confirmed by structural analysis and abolished activity for the mutant drMUGD93A. Two other microorganisms, Bradyrhizobium japonicum and Rhodopseudomonas palustris, possess genes that encode MUGs with the highest sequence identity to drMUG among all of the bacterial MUGs examined. A phylogenetic analysis indicates that these three MUGs form a new MUG/thymidine-DNA glycosylase subfamily, here called the MUG2 family. We suggest that the novel catalytic residue (Asp-93) has evolved to provide drMUG with broad substrate specificity to increase the DNA repair repertoire of D. radiodurans.
The crystal structure of mismatch-specific uracil-DNA glycosylase (MUG) from Deinococcus radiodurans reveals a novel catalytic residue and broad substrate specificity.,Moe E, Leiros I, Smalas AO, McSweeney S J Biol Chem. 2006 Jan 6;281(1):569-77. Epub 2005 Oct 12. PMID:16223719[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Moe E, Leiros I, Smalas AO, McSweeney S. The crystal structure of mismatch-specific uracil-DNA glycosylase (MUG) from Deinococcus radiodurans reveals a novel catalytic residue and broad substrate specificity. J Biol Chem. 2006 Jan 6;281(1):569-77. Epub 2005 Oct 12. PMID:16223719 doi:10.1074/jbc.M508032200
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