Format

Send to

Choose Destination
Virology. 2000 May 25;271(1):122-31.

Electron microscopy of the human respiratory syncytial virus fusion protein and complexes that it forms with monoclonal antibodies.

Author information

1
National Institute for Medical Research, Mill Hill, London, NW7 1AA, United Kingdom.

Abstract

Full-length fusion (F) glycoprotein of human respiratory syncytial virus (HRSV) and a truncated anchorless mutant lacking the C-terminal 50 amino acids were expressed from vaccinia recombinants and purified by immunoaffinity chromatography and sucrose gradient centrifugation. Electron microscopy of full-length F protein in the absence of detergents revealed micelles, (i.e., rosettes) containing two distinct types of protein rods, one cone-shaped and the other lollipop-shaped. Analysis of membrane anchorless F molecules indicated that they were similar to the cone-shaped rods and that rosettes, which they formed on storage, were made up of lollipop-shaped rods. The two forms of F protein may represent different structures that the molecule may adopt before and after activation for its role in membrane fusion. Studies of complexes of these structures with monoclonal antibodies of known specificity provide information on the three-dimensional organization of antigenic sites on the F protein and confirm the oligomeric structure, possibly trimeric, of both full-length F and membrane anchorless F.

PMID:
10814577
DOI:
10.1006/viro.2000.0279
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center