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. 1985 Nov;5(11):3301–3303. doi: 10.1128/mcb.5.11.3301

Transformation-defective mutant of avian myeloblastosis virus that is temperature sensitive for production of transforming protein p45v-myb.

M G Moscovici, K H Klempnauer, G Symonds, J M Bishop, C Moscovici
PMCID: PMC369149  PMID: 3018515

Abstract

We have characterized a mutant of avian myeloblastosis virus (strain GA907/7) that shows a reduced capacity to transform myelomonocytic cells at the nonpermissive temperature. Myeloblasts transformed by this mutant suffer a substantial decrease in the amount of the transforming protein p45v-myb when shifted from the permissive to the nonpermissive temperature. We presume that the 5- to 10-fold decrease in the amount of p45v-myb causes the loss of the transformed phenotype. The decrease is due to a reduction in the level of v-myb mRNA. Mutant GA907/7 thus provides genetic evidence that p45v-myb is the transforming protein of avian myeloblastosis virus and apparently represents an unusual defect in the production or stability of mRNA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Boyle W. J., Lipsick J. S., Reddy E. P., Baluda M. A. Identification of the leukemogenic protein of avian myeloblastosis virus and of its normal cellular homologue. Proc Natl Acad Sci U S A. 1983 May;80(10):2834–2838. doi: 10.1073/pnas.80.10.2834. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Duesberg P. H., Bister K., Moscovici C. Genetic structure of avian myeloblastosis virus, released from transformed myeloblasts as a defective virus particle. Proc Natl Acad Sci U S A. 1980 Sep;77(9):5120–5124. doi: 10.1073/pnas.77.9.5120. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Gonda T. J., Bishop J. M. Structure and transcription of the cellular homolog (c-myb) of the avian myeloblastosis virus transforming gene (v-myb). J Virol. 1983 Apr;46(1):212–220. doi: 10.1128/jvi.46.1.212-220.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Gonda T. J., Sheiness D. K., Bishop J. M. Transcripts from the cellular homologs of retroviral oncogenes: distribution among chicken tissues. Mol Cell Biol. 1982 Jun;2(6):617–624. doi: 10.1128/mcb.2.6.617. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Gonda T. J., Sheiness D. K., Fanshier L., Bishop J. M., Moscovici C., Moscovici M. G. The genome and the intracellular RNAs of avian myeloblastosis virus. Cell. 1981 Jan;23(1):279–290. doi: 10.1016/0092-8674(81)90292-0. [DOI] [PubMed] [Google Scholar]
  6. Klempnauer K. H., Gonda T. J., Bishop J. M. Nucleotide sequence of the retroviral leukemia gene v-myb and its cellular progenitor c-myb: the architecture of a transduced oncogene. Cell. 1982 Dec;31(2 Pt 1):453–463. doi: 10.1016/0092-8674(82)90138-6. [DOI] [PubMed] [Google Scholar]
  7. Klempnauer K. H., Ramsay G., Bishop J. M., Moscovici M. G., Moscovici C., McGrath J. P., Levinson A. D. The product of the retroviral transforming gene v-myb is a truncated version of the protein encoded by the cellular oncogene c-myb. Cell. 1983 Jun;33(2):345–355. doi: 10.1016/0092-8674(83)90416-6. [DOI] [PubMed] [Google Scholar]
  8. Klempnauer K. H., Symonds G., Evan G. I., Bishop J. M. Subcellular localization of proteins encoded by oncogenes of avian myeloblastosis virus and avian leukemia virus E26 and by chicken c-myb gene. Cell. 1984 Jun;37(2):537–547. doi: 10.1016/0092-8674(84)90384-2. [DOI] [PubMed] [Google Scholar]
  9. Moscovici M. G., Moscovici C. Isolation and characterization of a temperature-sensitive mutant of avian myeloblastosis virus. Proc Natl Acad Sci U S A. 1983 Mar;80(5):1421–1425. doi: 10.1073/pnas.80.5.1421. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Roussel M., Saule S., Lagrou C., Rommens C., Beug H., Graf T., Stehelin D. Three new types of viral oncogene of cellular origin specific for haematopoietic cell transformation. Nature. 1979 Oct 11;281(5731):452–455. doi: 10.1038/281452a0. [DOI] [PubMed] [Google Scholar]
  11. Souza L. M., Strommer J. N., Hillyard R. L., Komaromy M. C., Baluda M. A. Cellular sequences are present in the presumptive avian myeloblastosis virus genome. Proc Natl Acad Sci U S A. 1980 Sep;77(9):5177–5181. doi: 10.1073/pnas.77.9.5177. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Thomas P. S. Hybridization of denatured RNA and small DNA fragments transferred to nitrocellulose. Proc Natl Acad Sci U S A. 1980 Sep;77(9):5201–5205. doi: 10.1073/pnas.77.9.5201. [DOI] [PMC free article] [PubMed] [Google Scholar]

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