Abstract
A complex containing polyoma (py) DNA and protein (py complex) was isolated from polyoma-infected mouse-cell cultures. The complex sedimented unimodally at about 55 S. When labeled for long periods (2-3 hr) between 20 and 40 hr after infection, most of the [3H]DNA in the py complex was in the form of covalently closed, circular polyoma DNA (component I). When labeled for 5 min, the [3H]DNA in the py complex was nicked in one or both of the strands, as shown by alkaline sucrose gradient centrifugation. Under all conditions studied, no free py DNA was extracted from mouse cells by the two methods described.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Anderer F. A., Koch M. A., Schlumberger H. D. Structure of simian virus 40. 3. Alkaline degradation of the virus particle. Virology. 1968 Mar;34(3):452–458. doi: 10.1016/0042-6822(68)90065-2. [DOI] [PubMed] [Google Scholar]
- BOLLUM F. J. Thermal conversion of nonpriming deoxyribonucleic acid to primer. J Biol Chem. 1959 Oct;234:2733–2734. [PubMed] [Google Scholar]
- Bourgaux P., Bourgaux-Ramoisy D., Dulbecco R. The replication of the ring-shaped DNA of polyoma virus. I. Identification of the replicative intermediate. Proc Natl Acad Sci U S A. 1969 Oct;64(2):701–708. doi: 10.1073/pnas.64.2.701. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cuzin F., Vogt M., Dieckmann M., Berg P. Induction of virus multiplication in 3T3 cells transformed by a thermosensitive mutant of polyoma virus. II. Formation of oligometric polyoma DNA molecules. J Mol Biol. 1970 Feb 14;47(3):317–333. doi: 10.1016/0022-2836(70)90305-0. [DOI] [PubMed] [Google Scholar]
- DULBECCO R., HARTWELL L. H., VOGT M. INDUCTION OF CELLULAR DNA SYNTHESIS BY POLYOMA VIRUS. Proc Natl Acad Sci U S A. 1965 Feb;53:403–410. doi: 10.1073/pnas.53.2.403. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Di Mayorca G., Callender J., Marin G., Giordano R. Temperature-sensitive mutants of polyoma virus. Virology. 1969 May;38(1):126–133. doi: 10.1016/0042-6822(69)90134-2. [DOI] [PubMed] [Google Scholar]
- Dulbecco R. Cell transformation by viruses. Science. 1969 Nov 21;166(3908):962–968. doi: 10.1126/science.166.3908.962. [DOI] [PubMed] [Google Scholar]
- Eckhart W. Complementation and transformation by temperature-sensitive mutants of polyoma virus. Virology. 1969 May;38(1):120–125. doi: 10.1016/0042-6822(69)90133-0. [DOI] [PubMed] [Google Scholar]
- Gershon D., Hausen P., Sachs L., Winocour E. On the mechanism of polyoma virus-induced synthesis of cellular DNA. Proc Natl Acad Sci U S A. 1965 Dec;54(6):1584–1592. doi: 10.1073/pnas.54.6.1584. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hancock R., Weil R. Biochemical evidence for induction by polyoma virus of replication of the chromosomes of mouse kidney cells. Proc Natl Acad Sci U S A. 1969 Aug;63(4):1144–1150. doi: 10.1073/pnas.63.4.1144. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hayward W. S., Green M. H. Effect of the lambda repressor on the binding of RNA polymerase to DNA. Proc Natl Acad Sci U S A. 1969 Nov;64(3):962–969. doi: 10.1073/pnas.64.3.962. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hirt B. Selective extraction of polyoma DNA from infected mouse cell cultures. J Mol Biol. 1967 Jun 14;26(2):365–369. doi: 10.1016/0022-2836(67)90307-5. [DOI] [PubMed] [Google Scholar]
- VOGT M., DULBECCO R. Studies on cells rendered neoplastic by polyoma virus: the problem of the presence of virus-related materials. Virology. 1962 Jan;16:41–51. doi: 10.1016/0042-6822(62)90200-3. [DOI] [PubMed] [Google Scholar]
- Vinograd J., Lebowitz J., Radloff R., Watson R., Laipis P. The twisted circular form of polyoma viral DNA. Proc Natl Acad Sci U S A. 1965 May;53(5):1104–1111. doi: 10.1073/pnas.53.5.1104. [DOI] [PMC free article] [PubMed] [Google Scholar]
- WINOCOUR E. Purification of polyoma virus. Virology. 1963 Feb;19:158–168. doi: 10.1016/0042-6822(63)90005-9. [DOI] [PubMed] [Google Scholar]
- Weil R., Michel M. R., Ruschmann G. K. Induction of cellular DNA synthesis by polyoma virus. Proc Natl Acad Sci U S A. 1965 Jun;53(6):1468–1475. doi: 10.1073/pnas.53.6.1468. [DOI] [PMC free article] [PubMed] [Google Scholar]