View source for 4zbx


==Family 4 uracil-DNA glycosylase from Sulfolobus tokodaii (free form, X-ray wavelength=0.9000)==
<StructureSection load='4zbx' size='340' side='right'caption='[[4zbx]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4zbx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sulfurisphaera_tokodaii_str._7 Sulfurisphaera tokodaii str. 7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4ZBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4ZBX 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]] 1.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</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=4zbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4zbx OCA], [https://pdbe.org/4zbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4zbx RCSB], [https://www.ebi.ac.uk/pdbsum/4zbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4zbx ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/UDGA_SULTO UDGA_SULTO] Removes uracil bases that are present in DNA as a result of either deamination of cytosine or misincorporation of dUMP instead of dTMP.<ref>PMID:26318717</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Uracil-DNA glycosylases (UDGs) excise uracil from DNA by catalyzing the N-glycosidic bond hydrolysis. Here we report the first crystal structures of an archaeal UDG (stoUDG). Compared with other UDGs, stoUDG has a different structure of the leucine-intercalation loop, which is important for DNA binding. The stoUDG-DNA complex model indicated that Leu169, Tyr170, and Asn171 in the loop are involved in DNA intercalation. Mutational analysis showed that Tyr170 is critical for substrate DNA recognition. These results indicate that Tyr170 occupies the intercalation site formed after the structural change of the leucine-intercalation loop required for the catalysis.

Crystal structure of family 4 uracil-DNA glycosylase from Sulfolobus tokodaii and a function of tyrosine 170 in DNA binding.,Kawai A, Higuchi S, Tsunoda M, Nakamura KT, Yamagata Y, Miyamoto S FEBS Lett. 2015 Sep 14;589(19 Pt B):2675-82. doi: 10.1016/j.febslet.2015.08.019. , Epub 2015 Aug 28. PMID:26318717<ref>PMID:26318717</ref>

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

==See Also==
*[[DNA glycosylase 3D structures|DNA glycosylase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Sulfurisphaera tokodaii str. 7]]
[[Category: Kawai A]]
[[Category: Miyamoto S]]