Simian virus 40-transformed cells express new species of proteins precipitable by anti-simian virus 40 tumor serum
نویسندگان
چکیده
منابع مشابه
Superinfection of simian virus 40-transformed permissive cells with simian virus 40.
Evidence that the resistance of simian virus (SV40)-transformed permissive cells to superinfection with SV40 is due to lack of virus uptake is presented. When virus uptake is enhanced, the events of infection proceed as in normal permissive cells, resulting in production of infectious virus.
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Simian virus 40 (SV40) strains have been rescued from various clonal lines of mouse kidney cells that had been transformed by ultraviolet (UV)-irradiated SV40. To learn whether some of the rescued SV40 strains were mutants, monkey kidney (CV-1) cells were infected with the rescued virus strains at 37 C and at 41 C. The SV40 strains studied included strains rescued from transformed cell lines cl...
متن کاملStimulation of simian virus 40 late gene expression by simian virus 40 tumor antigen.
The early simian virus 40 (SV40) gene product, large tumor (T) antigen, is responsible for the initiation of viral DNA replication and the autoregulation of early gene expression through direct protein-DNA interactions. We investigated the role of T antigen in late viral gene expression, independent of its function in amplifying templates through DNA replication. SV40 DNA was transfected into B...
متن کاملProteins in intracellular simian virus 40 nucleoportein complexes: comparison with simian virus 40 core proteins.
Intracellular nucleoprotein complexes containing SV40 supercoiled DNA were purified from cell lysates by chromatography on hydroxyapatite columns followed by velocity sedimentation through sucrose gradients. The major protein components from purified complexes were identified as histone-like proteins. When analyzed by electrophoresis in sodium dodecyl sulfate-polyacrylamide gels, complex protei...
متن کاملInduction of simian virus 40 antigen in BSC1 transformed cells.
Heating to 45 C induced in virus-free clones of simian virus 40 (SV40) transformed BSC(1) cells the synthesis of SV40 viral antigen, as evidenced by immunofluorescence. Up to 3.8% of the cells exhibited viral antigen 72 hr after heating to 45 C for 30 min. Depletion of arginine from the medium of the heated cells enhanced and increased the percentage of cells synthesizing viral antigen to 11%. ...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1979
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.31.2.472-483.1979