The measurement of haemagglutinin and matrix protein present on the surface of influenza virus infected P815 mastocytoma cells.
Identifieur interne : 002872 ( Main/Exploration ); précédent : 002871; suivant : 002873The measurement of haemagglutinin and matrix protein present on the surface of influenza virus infected P815 mastocytoma cells.
Auteurs : G L Ada ; K L YapSource :
- The Journal of general virology [ 0022-1317 ] ; 1979.
Descripteurs français
- KwdFr :
- Antigènes de surface (analyse), Antigènes viraux (analyse), Antigènes viraux (immunologie), Complexe antigène-anticorps, Fragments Fab d'immunoglobuline (immunologie), Hémagglutinines virales (analyse), Lignée cellulaire, Membrane cellulaire (immunologie), Orthomyxoviridae (croissance et développement), Orthomyxoviridae (immunologie), Sarcome à mastocytes.
- MESH :
- analyse : Antigènes de surface, Antigènes viraux, Hémagglutinines virales.
- croissance et développement : Orthomyxoviridae.
- immunologie : Antigènes viraux, Fragments Fab d'immunoglobuline, Membrane cellulaire, Orthomyxoviridae.
- Complexe antigène-anticorps, Lignée cellulaire, Sarcome à mastocytes.
English descriptors
- KwdEn :
- Antigen-Antibody Complex, Antigens, Surface (analysis), Antigens, Viral (analysis), Antigens, Viral (immunology), Cell Line, Cell Membrane (immunology), Hemagglutinins, Viral (analysis), Immunoglobulin Fab Fragments (immunology), Mast-Cell Sarcoma, Orthomyxoviridae (growth & development), Orthomyxoviridae (immunology).
- MESH :
- chemical , analysis : Antigens, Surface, Antigens, Viral, Hemagglutinins, Viral.
- chemical , immunology : Antigens, Viral, Immunoglobulin Fab Fragments.
- chemical : Antigen-Antibody Complex.
- growth & development : Orthomyxoviridae.
- immunology : Cell Membrane, Orthomyxoviridae.
- Cell Line, Mast-Cell Sarcoma.
Abstract
A thermodynamic approach has been used to measure the amount of haemagglutinin and matrix protein expressed at the surface of P815 cells infected for periods between 4.5 and 11 h with either WSN (H0N1) or JAP (H2N2) strains of type A influenza virus. This involved measuring the interaction of different concentrations of labelled (Fab)2 preparations of specific antibody with normal and infected cells. Assuming that one molecule of (Fab)2 bound to one molecule of antigen, values for the number of molecules of antigen/infected cell ranged from 7.6 X 10(5) to 1.7 X 10(7) for haemagglutinin and 1.3 X 10(5) to 1.1 X 10(6) for matrix protein. The ratio of haemagglutinin/matrix protein was lower for WSN-infected cells (1.7) than for JAP-infected cells (10). The same reagents were reacted with three purified A type virions; WSN, JAP and Port Chalmers (H3N2). Each preparation bound anti-matrix protein (Fab)2 though the value for haemagglutinin/matrix protein was much higher (66) than for infected cells and suggested that a virion may have a small number (about 12) of matrix protein molecules exposed though it was not excluded that the matrix protein detected was exposed only on damaged virions. Pre-treatment of infected cells with unlabelled reagent (anti-haemagglutinin) reduced the subsequent binding of the same labelled reagent but not the binding of the labelled matrix protein reagent and vice versa, suggesting that the haemagglutinin and matrix protein were not very close to each other on the cell surface.
DOI: 10.1099/0022-1317-42-3-541
PubMed: 107273
Affiliations:
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Le document en format XML
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This involved measuring the interaction of different concentrations of labelled (Fab)2 preparations of specific antibody with normal and infected cells. Assuming that one molecule of (Fab)2 bound to one molecule of antigen, values for the number of molecules of antigen/infected cell ranged from 7.6 X 10(5) to 1.7 X 10(7) for haemagglutinin and 1.3 X 10(5) to 1.1 X 10(6) for matrix protein. The ratio of haemagglutinin/matrix protein was lower for WSN-infected cells (1.7) than for JAP-infected cells (10). The same reagents were reacted with three purified A type virions; WSN, JAP and Port Chalmers (H3N2). Each preparation bound anti-matrix protein (Fab)2 though the value for haemagglutinin/matrix protein was much higher (66) than for infected cells and suggested that a virion may have a small number (about 12) of matrix protein molecules exposed though it was not excluded that the matrix protein detected was exposed only on damaged virions. Pre-treatment of infected cells with unlabelled reagent (anti-haemagglutinin) reduced the subsequent binding of the same labelled reagent but not the binding of the labelled matrix protein reagent and vice versa, suggesting that the haemagglutinin and matrix protein were not very close to each other on the cell surface.</div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Ada, G L" sort="Ada, G L" uniqKey="Ada G" first="G L" last="Ada">G L Ada</name><name sortKey="Yap, K L" sort="Yap, K L" uniqKey="Yap K" first="K L" last="Yap">K L Yap</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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