6OE5 image
Entry Detail
PDB ID:
6OE5
Title:
Splayed open prefusion RSV F captured by CR9501 and motavizumab Fabs
Biological Source:
PDB Version:
Deposition Date:
2019-03-27
Release Date:
2019-04-17
Method Details:
Experimental Method:
Resolution:
4.10 Å
R-Value Free:
0.30
R-Value Work:
0.26
R-Value Observed:
0.26
Space Group:
P 61
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Fusion glycoprotein F0,Fibritin
Mutations:N67I, S215P
Chain IDs:A
Chain Length:553
Number of Molecules:1
Biological Source:Human respiratory syncytial virus A (strain A2), Enterobacteria phage T4
Polymer Type:polypeptide(L)
Description:Motavizumab Fab Heavy Chain
Chain IDs:B
Chain Length:225
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:Motavizumab Fab Light Chain
Chain IDs:C
Chain Length:213
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:CR9501 Fab Heavy Chain
Chain IDs:D (auth: H)
Chain Length:230
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:CR9501 Fab Light Chain
Chain IDs:E (auth: L)
Chain Length:214
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Transient opening of trimeric prefusion RSV F proteins.
Nat Commun 10 2105 2105 (2019)
PMID: 31068578 DOI: 10.1038/s41467-019-09807-5

Abstact

The respiratory syncytial virus (RSV) F glycoprotein is a class I fusion protein that mediates viral entry and is a major target of neutralizing antibodies. Structures of prefusion forms of RSV F, as well as other class I fusion proteins, have revealed compact trimeric arrangements, yet whether these trimeric forms can transiently open remains unknown. Here, we perform structural and biochemical studies on a recently isolated antibody, CR9501, and demonstrate that it enhances the opening of prefusion-stabilized RSV F trimers. The 3.3 Å crystal structure of monomeric RSV F bound to CR9501, combined with analysis of over 25 previously determined RSV F structures, reveals a breathing motion of the prefusion conformation. We also demonstrate that full-length RSV F trimers transiently open and dissociate on the cell surface. Collectively, these findings have implications for the function of class I fusion proteins, as well as antibody prophylaxis and vaccine development for RSV.

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Primary Citation of related structures