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<StructureSection load='1udi' size='340' side='right'caption='[[1udi]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
<StructureSection load='1udi' size='340' side='right'caption='[[1udi]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1udi]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_phage_pbs1 Bacillus phage pbs1] and [https://en.wikipedia.org/wiki/Herpes_simplex_virus_(type_1_/_strain_17) Herpes simplex virus (type 1 / strain 17)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UDI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UDI FirstGlance]. <br>
<table><tr><td colspan='2'>[[1udi]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_virus_PBS1 Bacillus virus PBS1] and [https://en.wikipedia.org/wiki/Human_alphaherpesvirus_1_strain_17 Human alphaherpesvirus 1 strain 17]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UDI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UDI FirstGlance]. <br>
</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Uridine_nucleosidase Uridine nucleosidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.2.3 3.2.2.3] </span></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]] 2.7&#8491;</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=1udi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1udi OCA], [https://pdbe.org/1udi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1udi RCSB], [https://www.ebi.ac.uk/pdbsum/1udi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1udi 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=1udi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1udi OCA], [https://pdbe.org/1udi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1udi RCSB], [https://www.ebi.ac.uk/pdbsum/1udi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1udi ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/UNG_HHV11 UNG_HHV11]] Excises uracil residues from the DNA which can arise as a result of misincorporation of dUMP residues by DNA polymerase or deamination of cytosine. Therefore may reduce deleterious uracil incorporation into the viral genome, particularly, in terminally differentiated neurons which lack DNA repair enzymes.<ref>PMID:7552746</ref> <ref>PMID:16306042</ref> [[https://www.uniprot.org/uniprot/UNGI_BPPB2 UNGI_BPPB2]] This protein binds specifically and reversibly to the host uracil-DNA glycosylase, preventing removal of uracil residues from PBS2 DNA by the host uracil-excision repair system.
[https://www.uniprot.org/uniprot/UNG_HHV11 UNG_HHV11] Excises uracil residues from the DNA which can arise as a result of misincorporation of dUMP residues by DNA polymerase or deamination of cytosine. Therefore may reduce deleterious uracil incorporation into the viral genome, particularly, in terminally differentiated neurons which lack DNA repair enzymes.<ref>PMID:7552746</ref> <ref>PMID:16306042</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=1udi 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=1udi ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The Bacillus subtilis bacteriophages PBS-1 and PBS-2 protect their uracil-containing DNA by expressing an inhibitor protein (UGI) which inactivates the host uracil-DNA glycosylase (UDGase) base-excision repair enzyme. Also, PBS1/2 UGI efficiently inactivates UDGases from other biological sources, including the enzyme from herpes simplex virus type-1 (HSV-1). The crystal structure of the HSV-1 UDGase-PBS1 UGI complex at 2.7 angstrum reveals an alpha-beta-alpha sandwich structure for UGI which interacts with conserved regions of UDGase involved in DNA binding, and directly mimics protein-DNA interactions observed in the UDGase-oligonucleotide complex. The inhibitor completely blocks access to the active site of UDGase, but makes no direct contact with the uracil-binding pocket itself.
Nucleotide mimicry in the crystal structure of the uracil-DNA glycosylase-uracil glycosylase inhibitor protein complex.,Savva R, Pearl LH Nat Struct Biol. 1995 Sep;2(9):752-7. PMID:7552746<ref>PMID:7552746</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1udi" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus phage pbs1]]
[[Category: Bacillus virus PBS1]]
[[Category: Human alphaherpesvirus 1 strain 17]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Uridine nucleosidase]]
[[Category: Pearl LH]]
[[Category: Pearl, L H]]
[[Category: Savva R]]
[[Category: Savva, R]]
[[Category: Hydrolase-inhibitor complex]]

Latest revision as of 08:45, 14 February 2024

NUCLEOTIDE MIMICRY IN THE CRYSTAL STRUCTURE OF THE URACIL-DNA GLYCOSYLASE-URACIL GLYCOSYLASE INHIBITOR PROTEIN COMPLEX

1udi, resolution 2.70Å

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