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==INFLUENZA B VIRUS NEURAMINIDASE CAN SYNTHESIZE ITS OWN INHIBITOR==
==INFLUENZA B VIRUS NEURAMINIDASE CAN SYNTHESIZE ITS OWN INHIBITOR==
<StructureSection load='1nsd' size='340' side='right' caption='[[1nsd]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='1nsd' size='340' side='right'caption='[[1nsd]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1nsd]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Inbbe Inbbe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NSD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NSD FirstGlance]. <br>
<table><tr><td colspan='2'>[[1nsd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_B_virus_(STRAIN_B/BEIJING/1/87) Influenza B virus (STRAIN B/BEIJING/1/87)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NSD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NSD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DAN:2-DEOXY-2,3-DEHYDRO-N-ACETYL-NEURAMINIC+ACID'>DAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Exo-alpha-sialidase Exo-alpha-sialidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.18 3.2.1.18] </span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DAN:2-DEOXY-2,3-DEHYDRO-N-ACETYL-NEURAMINIC+ACID'>DAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></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=1nsd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nsd OCA], [http://pdbe.org/1nsd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nsd RCSB], [http://www.ebi.ac.uk/pdbsum/1nsd PDBsum]</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=1nsd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nsd OCA], [https://pdbe.org/1nsd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nsd RCSB], [https://www.ebi.ac.uk/pdbsum/1nsd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nsd ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/NRAM_INBBE NRAM_INBBE]] Catalyzes the removal of terminal sialic acid residues from viral and cellular glycoconjugates. Cleaves off the terminal sialic acids on the glycosylated HA during virus budding to facilitate virus release. Additionally helps virus spread through the circulation by further removing sialic acids from the cell surface. These cleavages prevent self-aggregation and ensure the efficient spread of the progeny virus from cell to cell. Otherwise, infection would be limited to one round of replication. Described as a receptor-destroying enzyme because it cleaves a terminal sialic acid from the cellular receptors. May facilitate viral invasion of the upper airways by cleaving the sialic acid moities on the mucin of the airway epithelial cells (By similarity).  
[https://www.uniprot.org/uniprot/NRAM_INBBE NRAM_INBBE] Catalyzes the removal of terminal sialic acid residues from viral and cellular glycoconjugates. Cleaves off the terminal sialic acids on the glycosylated HA during virus budding to facilitate virus release. Additionally helps virus spread through the circulation by further removing sialic acids from the cell surface. These cleavages prevent self-aggregation and ensure the efficient spread of the progeny virus from cell to cell. Otherwise, infection would be limited to one round of replication. Described as a receptor-destroying enzyme because it cleaves a terminal sialic acid from the cellular receptors. May facilitate viral invasion of the upper airways by cleaving the sialic acid moities on the mucin of the airway epithelial cells (By similarity).
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== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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==See Also==
==See Also==
*[[Neuraminidase|Neuraminidase]]
*[[Neuraminidase 3D structures|Neuraminidase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Exo-alpha-sialidase]]
[[Category: Large Structures]]
[[Category: Inbbe]]
[[Category: Burmeister WP]]
[[Category: Burmeister, W P]]
[[Category: Cusack S]]
[[Category: Cusack, S]]
[[Category: Ruigrok RWH]]
[[Category: Ruigrok, R W.H]]
[[Category: Hydrolase-hydrolase inhibitor complex]]
[[Category: O-glycosyl]]

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