View source for 4wzl


==Crystal structure of P domain from norovirus strain Saga4 in complex with HBGA type Lea (triglycan)==
<StructureSection load='4wzl' size='340' side='right'caption='[[4wzl]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4wzl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Norovirus_Hu/GII-4/Saga4/2006/JP Norovirus Hu/GII-4/Saga4/2006/JP]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WZL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WZL 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=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</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=4wzl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wzl OCA], [https://pdbe.org/4wzl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wzl RCSB], [https://www.ebi.ac.uk/pdbsum/4wzl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wzl ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/B5BTR7_9CALI B5BTR7_9CALI] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Human noroviruses are the dominant cause of outbreaks of gastroenteritis around the world. Human norovirus interacts with the polymorphic human histo-blood group antigens (HBGAs) and this interaction is thought to be important for infection. Indeed, synthetic HBGAs or HBGA-expressing enteric bacteria were shown to enhance norovirus infection in B cells. A number of studies have found a possible relationship between HBGA type and norovirus susceptibility. The genogroup II genotype 4 (GII.4) noroviruses are the dominant cluster, evolve every other year, and are thought to modify their binding interactions to different HBGA types. Here, we show the high-resolution X-ray crystal structures of the capsid protruding (P) domains from epidemic GII.4 variants in 2004, 2006, and 2012, co-crystallized with a panel of HBGA types (H type 2, Lewis Y, Lewis B, Lewis A, Lewis X, A-type, and B-type). Many of the HBGA binding interactions were found to be complex, involving capsid loop movements, alternative HBGA conformations, and HBGA rotations. We showed that a loop (residues 391-395) was elegantly repositioned in order to allow for Lewis Y binding. This loop was also slightly shifted to provide direct hydrogen and water-mediated bonds with Lewis B. We considered that the flexible loop modulated Lewis HBGA binding. The GII.4 noroviruses have dominated outbreaks over the past decade, which may be explained by their exquisite HBGA binding mechanisms, their fondness for Lewis HBGAs, and their temporal amino acid modifications. IMPORTANCE: Our data provides a comprehensive picture of GII.4 P domain and HBGA binding interactions. The exceptionally high resolutions of our X-ray crystal structures allowed us to accurately recognize novel GII.4 P domain interactions with numerous HBGA types. We showed that the GII.4 P domain HBGA interactions involved complex binding mechanisms that were not previously observed in norovirus structural studies. Many of the GII.4 P domain HBGA interactions we identified were negative in earlier ELISA-based studies. Altogether, we showed that the GII.4 norovirus P domains could accommodate numerous HBGA types.

Human Noroviruses' Fondness of Histo-Blood Group Antigens.,Singh BK, Leuthold MM, Hansman GS J Virol. 2014 Nov 26. pii: JVI.02968-14. PMID:25428879<ref>PMID:25428879</ref>

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

==See Also==
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Norovirus Hu/GII-4/Saga4/2006/JP]]
[[Category: Hansman GS]]
[[Category: Singh BK]]