VIRAL GLYCOPROTEINS AT DIFFERENT STAGES OF INTRACELLULAR-TRANSPORT CAN BE DISTINGUISHED USING MONOCLONAL-ANTIBODIES
- 1 January 1983
- journal article
- research article
- Vol. 31 (2), 315-324
Abstract
Mouse monoclonal antibodies were raised against Semliki Forest virus (SFV) and all were found to recognize the E2 spike glycoprotein. The hybridomas were screened by immunofluorescence microscopy of infected [hamster kidney BHK-21] cells to look for antibodies recognizing E2 at different stages of intracellular transport and 2 (9AB4 and 9AD6) were chosen for further study. Immunocytochemical studies at the light microscopic and EM levels were used to show that 9AB4 recognized E2 at all stages of its transport from the rough endoplasmic reticulum (ER), where it was synthesized, to the cell surface via the smooth ER and Golgi complex. 9AD6 only recognized E2 once it had left the ER and entered the stacks of flattened Golgi cisternae. Binding of 9AD6 to E2 did not appear to be the result of the changes in oligosaccharide structure that occur in the Golgi complex and the precise modification detected by 9AD6 remains to be elucidated. A later modification, the cleavage of precursor E2 (p62) to give mature E2, was used to show that 9AD6 bound the latter more tightly than the former; 9AB4 bound both with equal affinity. These results show that monoclonal antibodies might be useful when searching for new modifications to proteins undergoing intracellular transport.This publication has 18 references indexed in Scilit:
- “Western Blotting”: Electrophoretic transfer of proteins from sodium dodecyl sulfate-polyacrylamide gels to unmodified nitrocellulose and radiographic detection with antibody and radioiodinated protein AAnalytical Biochemistry, 1981
- Phase separation of integral membrane proteins in Triton X-114 solution.Journal of Biological Chemistry, 1981
- Biosynthesis of HLA-A and HLA-B antigens in vivo.Journal of Biological Chemistry, 1980
- Formation of the Semliki Forest Virus Membrane Glycoprotein Complexes in the Infected CellJournal of General Virology, 1980
- Carbohydrate-induced conformational changes of Semliki forest virus glycoproteins determine antigenicityVirology, 1980
- Assembly and maturation of HLA-A and HLA-B antigens in vivoCell, 1979
- Use of a Monoclonal Antibody (W6/32) in Structural Studies of HLA-A,B,C AntigensThe Journal of Immunology, 1979
- Production of monoclonal antibodies to group A erythrocytes, HLA and other human cell surface antigens-new tools for genetic analysisCell, 1978
- Antibody-induced linkages of plasma membrane proteins to intracellular actomyosin-containing filaments in cultured fibroblasts.Proceedings of the National Academy of Sciences, 1977
- Production of antibodies against influenza virus by somatic cell hybrids between mouse myeloma and primed spleen cells.Proceedings of the National Academy of Sciences, 1977