Susceptibility of Human Cell Strains to Transformation by Simian Virus 40 and Simian Virus 40 Deoxyribonucleic Acid
نویسندگان
چکیده
منابع مشابه
Susceptibility of human cell strains to transformation by simian virus 40 and simian virus 40 deoxyribonucleic acid.
Marked differences were found in the susceptibility of human fibroblasts to transformation by simian virus 40 (SV40). Highly susceptible cell strains were derived from patients with diseases associated with chromosomal abnormalities and a high incidence of tumors. In the present study, SV40 transformation-susceptible cell strains were not found to have a generalized increase in viral sensitivit...
متن کاملOrigin and direction of simian virus 40 deoxyribonucleic acid replication.
Double-branched, circular, replicating deoxyribonucleic acid (DNA) molecules of simian virus 40 (SV40) have been cleaved by the R(1) restriction endonuclease from Escherichia coli. This enzyme introduces one double-strand break in SV40 DNA, at a specific site. The site of cleavage in the replicating molecules was used in this study to position the origin and the two branch points. Radioactively...
متن کاملSuperhelix density heterogeneity of intracellular simian virus 40 deoxyribonucleic acid.
Covalently closed intracellular and viral simian virus 40 (SV40) deoxyribonucleic acid (DNA) were separately isolated from infected African green monkey cells (BSC-1) grown in culture. The two DNA species form overlapping bands centered at different positions in a propidium di-iodide-cesium chloride (PDI-CsCl) buoyant density gradient capable of separating closed DNA species with different supe...
متن کاملSpecific initiation site for simian virus 40 deoxyribonucleic acid replication.
Replicating simian virus 40 (SV40) deoxyribonucleic acid (DNA) molecules have been isolated under conditions in which the newly synthesized DNA is uniformly labeled with (3)H-thymidine. These newly synthesized strands are released from the replicative intermediate molecules by alkaline treatment, and it has been possible to isolate single-stranded SV40 DNA which varies in size from 157,000 dalt...
متن کاملSequence heterogeneity in closed simian virus 40 deoxyribonucleic acid.
The heteroduplex molecules formed by self-annealing of denatured, singly nicked simian virus 40 (SV40) deoxyribonucleic acid (DNA) prepared from closed viral DNA were examined by formamide-protein film electron microscopy to test the DNA for sequence homogeneity. Sequence inhomogeneity appears in the heteroduplexes as single-strand loops. These result from sequence deletion or from sequence sub...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1970
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.6.4.470-475.1970