View source for 4ejz


==Structure of MBOgg1 in complex with low affinity DNA ligand==
<StructureSection load='4ejz' size='340' side='right'caption='[[4ejz]], [[Resolution|resolution]] 3.05&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4ejz]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Caldanaerobacter_subterraneus_subsp._tengcongensis_MB4 Caldanaerobacter subterraneus subsp. tengcongensis MB4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EJZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EJZ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.05&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3DR:1,2-DIDEOXYRIBOFURANOSE-5-PHOSPHATE'>3DR</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=4ejz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ejz OCA], [https://pdbe.org/4ejz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ejz RCSB], [https://www.ebi.ac.uk/pdbsum/4ejz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ejz ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8R5T9_CALS4 Q8R5T9_CALS4] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
7,8-Dihydro-8-oxoguanine (8-oxoG) is one of the most common oxidative DNA lesions. 8-oxoguanine DNA glycosylases (Oggs) detect and excise 8-oxoG through a multiple-step process. To better understand the basis for estranged base recognition, we have solved the crystal structures of MBOgg1, the 8-oxoguanine DNA glycosylase of Thermoanaerobacter tengcongensis, in complex with DNA containing a tetrahydrofuranyl site (THF, a stable abasic site analog) paired with an estranged cytosine (MBOgg1/DNA(THF:C)) or thymine (MBOgg1/DNA(THF:T)). Different states of THF (extrahelical or intrahelical) are observed in the two complexes of the ASU of MBOgg1/DNA(THF:C) structure. Analyses of their different interaction modes reveal that variable contacts on the 5' region flanking the THF abasic site are correlated with the states of the THF. Comparison of MBOgg1/DNA(THF:T) with MBOgg1/DNA(THF:C) indicates that the non-preferred estranged T may affect MBOgg1's contacts with the 5' flank of the lesion strand. Furthermore, we identified a region in MBOgg1 that is rich in positive charges and interacts with the 5' region flanking the lesion. This region is conserved only in non-eukaryotic Oggs, and additional mutagenesis and biochemical assays reveal that it may contribute to the distinct estranged base specificities between eukaryotic and non-eukaryotic Oggs.

Crystal structures of MBOgg1 in complex with two abasic DNA ligands.,Yu H, Yang M, Zhang XE, Bi L, Jiang T J Struct Biol. 2013 Mar;181(3):252-63. doi: 10.1016/j.jsb.2012.12.003. Epub 2012 , Dec 12. PMID:23246782<ref>PMID:23246782</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4ejz" style="background-color:#fffaf0;"></div>

==See Also==
*[[DNA glycosylase 3D structures|DNA glycosylase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Caldanaerobacter subterraneus subsp. tengcongensis MB4]]
[[Category: Large Structures]]
[[Category: Bi LJ]]
[[Category: Jiang T]]
[[Category: Yang MZ]]
[[Category: Yu HJ]]
[[Category: Zhang XE]]