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Purification and Characterization of Measles Virus Haemagglutinin Protein G

The Neurovirology Study Group, Department of Virology, University of Turku, SF-20520 Turku 52, Finland

The 79000 mol. wt. measles virion membrane glycoprotein G has been isolated from purified measles virus. Ultracentrifugation of 2% Triton X-100-treated measles virus produced a soluble supernatant fraction containing both G and F, the other external viral membrane protein. Lentil lectin-Sepharose and Sephacryl S-300 column chromatography of this fraction gave a pure preparation of G protein. Sucrose density-gradient centrifugation and SDS-polyacrylamide gel electrophoresis revealed that G was isolated from the virion membrane in the form of a disulphide-linked dimer. Antiserum prepared against purified G reacted only with the G polypeptide of measles virus in a slab gel antibody overlay technique. The antiserum also exhibited haemagglutination inhibition, virus neutralization and haemolysis inhibition activities.

Keywords: measles virus, haemagglutinin, purification

Received 23 February 1981; accepted 5 May 1981.