7xei: Difference between revisions

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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7xei FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7xei OCA], [https://pdbe.org/7xei PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7xei RCSB], [https://www.ebi.ac.uk/pdbsum/7xei PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7xei 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=7xei FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7xei OCA], [https://pdbe.org/7xei PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7xei RCSB], [https://www.ebi.ac.uk/pdbsum/7xei PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7xei ProSAT]</span></td></tr>
</table>
</table>
== Function ==
 
[https://www.uniprot.org/uniprot/SPIKE_SARS2 SPIKE_SARS2] attaches the virion to the cell membrane by interacting with host receptor, initiating the infection (By similarity). Binding to human ACE2 receptor and internalization of the virus into the endosomes of the host cell induces conformational changes in the Spike glycoprotein (PubMed:32142651, PubMed:32075877, PubMed:32155444). Uses also human TMPRSS2 for priming in human lung cells which is an essential step for viral entry (PubMed:32142651). Proteolysis by cathepsin CTSL may unmask the fusion peptide of S2 and activate membranes fusion within endosomes.[HAMAP-Rule:MF_04099]<ref>PMID:32075877</ref> <ref>PMID:32142651</ref> <ref>PMID:32155444</ref>  mediates fusion of the virion and cellular membranes by acting as a class I viral fusion protein. Under the current model, the protein has at least three conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During viral and target cell membrane fusion, the coiled coil regions (heptad repeats) assume a trimer-of-hairpins structure, positioning the fusion peptide in close proximity to the C-terminal region of the ectodomain. The formation of this structure appears to drive apposition and subsequent fusion of viral and target cell membranes.[HAMAP-Rule:MF_04099] Acts as a viral fusion peptide which is unmasked following S2 cleavage occurring upon virus endocytosis.[HAMAP-Rule:MF_04099]
==See Also==
== References ==
*[[Spike protein 3D structures|Spike protein 3D structures]]
<references/>
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</StructureSection>
</StructureSection>

Latest revision as of 12:41, 9 October 2024

SARS-CoV-2-prototyped-RBD and CB6-092-Fab complexSARS-CoV-2-prototyped-RBD and CB6-092-Fab complex

Structural highlights

7xei is a 6 chain structure with sequence from Homo sapiens and Severe acute respiratory syndrome coronavirus 2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.76Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

See Also

7xei, resolution 2.76Å

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OCA
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