4MMR image
Deposition Date 2013-09-09
Release Date 2013-11-20
Last Version Date 2024-11-20
Entry Detail
PDB ID:
4MMR
Keywords:
Title:
Crystal Structure of Prefusion-stabilized RSV F Variant Cav1 at pH 9.5
Biological Source:
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.10 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.22
Space Group:
P 41 3 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Fusion glycoprotein F2
Gene (Uniprot):F
Mutations:P102A
Chain IDs:A
Chain Length:82
Number of Molecules:1
Biological Source:Human respiratory syncytial virus A2
Polymer Type:polypeptide(L)
Molecule:Fusion glycoprotein F1 fused with Fibritin trimerization domain
Gene (Uniprot):F, wac
Mutations:S190F, V207L, I379V, M447V
Chain IDs:B
Chain Length:414
Number of Molecules:1
Biological Source:Human respiratory syncytial virus A2, Enterobacteria phage T4
Ligand Molecules
Primary Citation

Abstact

Respiratory syncytial virus (RSV) is the leading cause of hospitalization for children under 5 years of age. We sought to engineer a viral antigen that provides greater protection than currently available vaccines and focused on antigenic site Ø, a metastable site specific to the prefusion state of the RSV fusion (F) glycoprotein, as this site is targeted by extremely potent RSV-neutralizing antibodies. Structure-based design yielded stabilized versions of RSV F that maintained antigenic site Ø when exposed to extremes of pH, osmolality, and temperature. Six RSV F crystal structures provided atomic-level data on how introduced cysteine residues and filled hydrophobic cavities improved stability. Immunization with site Ø-stabilized variants of RSV F in mice and macaques elicited levels of RSV-specific neutralizing activity many times the protective threshold.

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Primary Citation of related structures