1mug
From Proteopedia
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==G:T/U MISMATCH-SPECIFIC DNA GLYCOSYLASE FROM E.COLI== | ==G:T/U MISMATCH-SPECIFIC DNA GLYCOSYLASE FROM E.COLI== | ||
| - | <StructureSection load='1mug' size='340' side='right' caption='[[1mug]], [[Resolution|resolution]] 1.80Å' scene=''> | + | <StructureSection load='1mug' size='340' side='right'caption='[[1mug]], [[Resolution|resolution]] 1.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1mug]] is a 1 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1mug]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MUG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MUG FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.8Å</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=1mug FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mug OCA], [https://pdbe.org/1mug PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mug RCSB], [https://www.ebi.ac.uk/pdbsum/1mug PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mug ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/MUG_ECOLI MUG_ECOLI] Excises ethenocytosine and uracil, which can arise by alkylation or deamination of cytosine, respectively, from the corresponding mispairs with guanine in ds-DNA. It is capable of hydrolyzing the carbon-nitrogen bond between the sugar-phosphate backbone of the DNA and the mispaired base. The complementary strand guanine functions in substrate recognition. Required for DNA damage lesion repair in stationary-phase cells.<ref>PMID:8878487</ref> <ref>PMID:12668677</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1mug ConSurf]. | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1mug ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | G:U mismatches resulting from deamination of cytosine are the most common promutagenic lesions occurring in DNA. Uracil is removed in a base-excision repair pathway by uracil DNA-glycosylase (UDG), which excises uracil from both single- and double-stranded DNA. Recently, a biochemically distinct family of DNA repair enzymes has been identified, which excises both uracil and thymine, but only from mispairs with guanine. Crystal structures of the mismatch-specific uracil DNA-glycosylase (MUG) from E. coli, and of a DNA complex, reveal a remarkable structural and functional homology to UDGs despite low sequence identity. Details of the MUG structure explain its thymine DNA-glycosylase activity and the specificity for G:U/T mispairs, which derives from direct recognition of guanine on the complementary strand. | ||
| - | + | ==See Also== | |
| - | + | *[[DNA glycosylase 3D structures|DNA glycosylase 3D structures]] | |
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== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Escherichia coli]] |
| - | [[Category: Barlow | + | [[Category: Large Structures]] |
| - | [[Category: Barrett | + | [[Category: Barlow T]] |
| - | [[Category: Brown | + | [[Category: Barrett TE]] |
| - | [[Category: Jiricny | + | [[Category: Brown T]] |
| - | [[Category: Panayotou | + | [[Category: Jiricny J]] |
| - | [[Category: Pearl | + | [[Category: Panayotou G]] |
| - | [[Category: Savva | + | [[Category: Pearl LH]] |
| - | + | [[Category: Savva R]] | |
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Current revision
G:T/U MISMATCH-SPECIFIC DNA GLYCOSYLASE FROM E.COLI
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Categories: Escherichia coli | Large Structures | Barlow T | Barrett TE | Brown T | Jiricny J | Panayotou G | Pearl LH | Savva R
