2ghv: Difference between revisions
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{{STRUCTURE_2ghv| PDB=2ghv | SCENE= }} | {{STRUCTURE_2ghv| PDB=2ghv | SCENE= }} | ||
===Crystal structure of SARS spike protein receptor binding domain=== | ===Crystal structure of SARS spike protein receptor binding domain=== | ||
{{ABSTRACT_PUBMED_16954221}} | |||
==Function== | |||
[[http://www.uniprot.org/uniprot/SPIKE_CVHSA SPIKE_CVHSA]] S1 attaches the virion to the cell membrane by interacting with human ACE2 and CLEC4M/DC-SIGNR, initiating the infection. Binding to the receptor and internalization of the virus into the endosomes of the host cell probably induces conformational changes in the S glycoprotein. Proteolysis by cathepsin CTSL may unmask the fusion peptide of S2 and activate membranes fusion within endosomes. S2 is 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. | |||
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==About this Structure== | ==About this Structure== | ||
[[2ghv]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Sars_coronavirus Sars coronavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GHV OCA]. | |||
==Reference== | ==Reference== | ||
<ref group="xtra">PMID: | <ref group="xtra">PMID:016954221</ref><references group="xtra"/><references/> | ||
[[Category: | [[Category: Sars coronavirus]] | ||
[[Category: Farzan, M.]] | [[Category: Farzan, M.]] | ||
[[Category: Hwang, W C.]] | [[Category: Hwang, W C.]] | ||
| Line 36: | Line 23: | ||
[[Category: S protein]] | [[Category: S protein]] | ||
[[Category: Sar]] | [[Category: Sar]] | ||
[[Category: Viral protein]] | |||