Published November 1973
| Published
Journal Article
Open
Morphogenesis of Poliovirus II. Demonstration of a New Intermediate, the Proviron
Abstract
Poliovirus-infected cells contain a previously unrecognized particle which appears to be an intermediate in virion synthesis and therefore has been named proviron. It sediments at about 125S, contains the three procapsid proteins, VP-0, VP-1, and VP-3, and has 35S viral RNA. It is disrupted both by sodium dodecyl sulfate and EDTA but the RNA resists digestion by ribonuclease. Pulsechase experiments and studies employing the virus-specific inhibitor, guanidine, all indicate that the proviron is formed by combination of newly made RNA with the procapsid. Cleavage of VP-0 to form VP-2 and VP-4 follows formation of the provirion and would be the final step in poliovirus morphogenesis.
Additional Information
© 1973 American Society for Microbiology. Received for publication 21 June 1973. We thank Donna Smoler for expert technical assistance and Alice Huang and Charles Cole for critical reading of the manuscript. This investigation was supported by Public Health Service grant AI-08388 from The National Institute of Allergy and Infectious Diseases. C.B.F. was a post-doctoral fellow of the Damon Runyon Memorial Fund for Cancer Research and D.B. was an American Cancer Society research professor.Attached Files
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Additional details
- PMCID
- PMC356744
- Eprint ID
- 32743
- Resolver ID
- CaltechAUTHORS:20120726-100027537
- AI-08388
- NIH
- Damon Runyan Memorial Fund for Cancer Research
- American Cancer Society
- Created
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2012-07-26Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field