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==Structure of coronavirus hemagglutinin-esterase in complex with 4,9-O-diacetyl sialic acid==
==Structure of coronavirus hemagglutinin-esterase in complex with 4,9-O-diacetyl sialic acid==
<StructureSection load='3cl5' size='340' side='right' caption='[[3cl5]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='3cl5' size='340' side='right'caption='[[3cl5]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3cl5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bovine_coronavirus Bovine coronavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CL5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CL5 FirstGlance]. <br>
<table><tr><td colspan='2'>[[3cl5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bovine_coronavirus Bovine coronavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CL5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3CL5 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SIO:METHYL+4,9-DI-O-ACETYL-5-(ACETYLAMINO)-3,5-DIDEOXY-D-GLYCERO-ALPHA-D-GALACTO-NON-2-ULOPYRANOSIDONIC+ACID'>SIO</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]] 1.8&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3cl4|3cl4]], [[1flc|1flc]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SIO:METHYL+4,9-DI-O-ACETYL-5-(ACETYLAMINO)-3,5-DIDEOXY-D-GLYCERO-ALPHA-D-GALACTO-NON-2-ULOPYRANOSIDONIC+ACID'>SIO</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11128 Bovine coronavirus])</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=3cl5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cl5 OCA], [https://pdbe.org/3cl5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3cl5 RCSB], [https://www.ebi.ac.uk/pdbsum/3cl5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3cl5 ProSAT]</span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Sialate_O-acetylesterase Sialate O-acetylesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.53 3.1.1.53] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3cl5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cl5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3cl5 RCSB], [http://www.ebi.ac.uk/pdbsum/3cl5 PDBsum]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/HEMA_CVBM HEMA_CVBM]] Structural protein that makes short spikes at the surface of the virus. Contains receptor binding and receptor-destroying activities. Mediates de-O-acetylation of N-acetyl-9-O-acetylneuraminic acid, which is probably the receptor determinant recognized by the virus on the surface of erythrocytes and susceptible cells. This receptor-destroying activity is important for virus release as it probably helps preventing self-aggregation and ensures the efficient spread of the progeny virus from cell to cell. May serve as a secondary viral attachment protein for initiating infection, the spike protein being the major one. Seems to be a 'luxury' protein that is not absolutely necessary for virus infection in culture. However, its presence in the virus may alter its pathogenicity. May become a target for both the humoral and the cellular branches of the immune system.  
[https://www.uniprot.org/uniprot/HEMA_CVBM HEMA_CVBM] Structural protein that makes short spikes at the surface of the virus. Contains receptor binding and receptor-destroying activities. Mediates de-O-acetylation of N-acetyl-9-O-acetylneuraminic acid, which is probably the receptor determinant recognized by the virus on the surface of erythrocytes and susceptible cells. This receptor-destroying activity is important for virus release as it probably helps preventing self-aggregation and ensures the efficient spread of the progeny virus from cell to cell. May serve as a secondary viral attachment protein for initiating infection, the spike protein being the major one. Seems to be a 'luxury' protein that is not absolutely necessary for virus infection in culture. However, its presence in the virus may alter its pathogenicity. May become a target for both the humoral and the cellular branches of the immune system.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/3cl5_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/3cl5_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </jmolCheckbox>
</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/chain_selection.php?pdb_ID=2ata 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=3cl5 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 3cl5" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Hemagglutinin-esterase|Hemagglutinin-esterase]]
*[[Hemagglutinin-esterase 3D structures|Hemagglutinin-esterase 3D structures]]
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Bovine coronavirus]]
[[Category: Bovine coronavirus]]
[[Category: Sialate O-acetylesterase]]
[[Category: Large Structures]]
[[Category: Groot, R J.de]]
[[Category: Huizinga EG]]
[[Category: Huizinga, E G]]
[[Category: Langereis MA]]
[[Category: Langereis, M A]]
[[Category: Zeng QH]]
[[Category: Vliet, A L.W van]]
[[Category: De Groot RJ]]
[[Category: Zeng, Q H]]
[[Category: Van Vliet ALW]]
[[Category: Envelope protein]]
[[Category: Glycoprotein]]
[[Category: Hemagglutinin]]
[[Category: Hydrolase]]
[[Category: Membrane]]
[[Category: Sgnh-hydrolase fold]]
[[Category: Swiss roll]]
[[Category: Transmembrane]]
[[Category: Virion]]

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