Abstract
Four phenotypically normal mink cell clones, each containing a transformation-defective provirus of the Snyder-Theilen strain of feline sarcoma virus (ST-FeSV), synthesized an 85,000-dalton viral polyprotein (P85) indistinguishable in size and antigenic complexity from that encoded by wild-type transforming ST-FeSV. An additional transformation-defective, ST-FeSV-containing flat cell clone produced a polyprotein of 88,000 daltons (P88). The viral polyproteins immunoprecipitated from cytoplasmic extracts of these cells lacked the tyrosine-specific protein kinase activity associated with the wild-type ST-FeSV gene product. In addition, the products encoded by representative transformation-defective ST-FeSV genomes were poorly phosphorylated in vivo and lacked detectable phosphotyrosine residues. Whereas proteins of ST-FeSV transformants contained elevated levels of phosphotyrosine, those of mink cells containing transformation-defective ST-FeSV exhibited phosphotyrosine levels no higher than those found in uninfected cells. These findings provide genetic evidence that the tyrosine-specific protein kinase activity associated with ST-FeSV P85 is required for virus-induced transformation.
MeSH Terms
Animals
Cell Line
Cell Transformation, Viral
Genes, Viral
Mink
Mutation
Phosphorylation
Phosphotyrosine
Protein Kinases/metabolism
Protein-Tyrosine Kinases
Retroviridae/genetics
Sarcoma Viruses, Feline/enzymology,genetics
Tyrosine/analogs & derivatives,metabolism
Viral Proteins/genetics
Chemicals
Viral Proteins
Phosphotyrosine
Tyrosine
Protein Kinases
Protein-Tyrosine Kinases
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Barbacid M
Donner L
Ruscetti S K
Sherr C J
References (28)
28 references, click to expand
-
A film detection method for tritium-labelled proteins and nucleic acids in polyacrylamide gels.
Eur J Biochem. 1974 Jul 1;46(1):83-8
PMID: 4850204
-
Transformation-defective virus mutants in a class of morphologic revertants of sarcoma virus transformed nonproducer cells.
Cell. 1974 Aug;2(4):279-86
PMID: 4370517
-
Thyrotrophin-releasing hormone and shaking behaviour in rat.
Nature. 1975 Feb 27;253(5494):739-40
PMID: 803644
-
Different mechanisms for morphologic reversion of a clonal population of murine sarcoma virus-transformed nonproducer cells.
Virology. 1977 Apr;77(2):750-61
PMID: 193260
-
Feline leukemia virus: biochemical and immunological characterization of gag gene-coded structural proteins.
J Virol. 1977 Sep;23(3):599-607
PMID: 197262
-
Protein kinase activity associated with the avian sarcoma virus src gene product.
Proc Natl Acad Sci U S A. 1978 Apr;75(4):2021-4
PMID: 205879
-
Pseudotypes of feline sarcoma virus contain an 85,000-dalton protein with feline oncornavirus-associated cell membrane antigen (FOCMA) activity.
Proc Natl Acad Sci U S A. 1978 Mar;75(3):1505-9
PMID: 206902
-
Evidence that the transforming gene of avian sarcoma virus encodes a protein kinase associated with a phosphoprotein.
Cell. 1978 Oct;15(2):561-72
PMID: 214242
-
Biological properties and translational products of three independent isolates of feline sarcoma virus.
Virology. 1979 Jan 15;92(1):91-107
PMID: 217170
-
Cellular regulation of mammalian sarcoma virus expression: a gene regulation model for oncogenesis.
Cell. 1979 Apr;16(4):875-84
PMID: 222469
-
The nonstructural components of polyproteins encoded by replication-defective mammalian transforming retroviruses are phosphorylated and have associated protein kinase activity.
Virology. 1980 Feb;101(1):185-97
PMID: 6243819
-
Abelson murine leukaemia virus protein is phosphorylated in vitro to form phosphotyrosine.
Nature. 1980 Feb 28;283(5750):826-31
PMID: 6244493
-
Biochemical and immunological characterization of polyproteins coded for by the McDonough, Gardner-Arnstein, and Snyder-Theilen strains of feline sarcoma virus.
J Virol. 1980 Jan;33(1):196-207
PMID: 6154148
-
Transforming gene product of Rous sarcoma virus phosphorylates tyrosine.
Proc Natl Acad Sci U S A. 1980 Mar;77(3):1311-5
PMID: 6246487
-
Transformation-defective mutants of feline sarcoma virus which express a product of the viral src gene.
J Virol. 1980 Jul;35(1):129-40
PMID: 6251261
-
Three independent isolates of feline sarcoma virus code for three distinct gag-x polyproteins.
J Virol. 1980 Jul;35(1):259-64
PMID: 6251274
-
Evidence that the phosphorylation of tyrosine is essential for cellular transformation by Rous sarcoma virus.
Cell. 1980 Jul;20(3):807-16
PMID: 6251974
-
Abelson murine leukemia virus transformation-defective mutants with impaired P120-associated protein kinase activity.
J Virol. 1980 Nov;36(2):374-86
PMID: 6253663
-
A transformation-defective mutant of Abelson murine leukemia virus lacks protein kinase activity.
Proc Natl Acad Sci U S A. 1980 Aug;77(8):4993-7
PMID: 6254050
-
Origin and functional properties of the major gene product of the Snyder-Theilen strain of feline sarcoma virus.
Proc Natl Acad Sci U S A. 1980 Sep;77(9):5158-62
PMID: 6254060
-
Transformation by Rous sarcoma virus: a cellular substrate for transformation-specific protein phosphorylation contains phosphotyrosine.
Cell. 1980 Oct;21(3):821-8
PMID: 6159984
-
Identification of a cellular protein substrate phosphorylated by the avian sarcoma virus-transforming gene product.
Cell. 1980 Oct;21(3):829-36
PMID: 6254669
-
Characterization of protein kinase activity associated with the transforming gene product of Fujinami sarcoma virus.
Cell. 1980 Dec;22(3):757-65
PMID: 6257396
-
A strain of Fujinami sarcoma virus which is temperature-sensitive in protein phosphorylation and cellular transformation.
Cell. 1980 Dec;22(3):767-75
PMID: 6257397
-
Tyrosine-specific protein kinase activity associated with p105 of avian sarcoma virus PRCII.
Virology. 1981 Feb;109(1):223-8
PMID: 6258311
-
Cellular transformation by subgenomic feline sarcoma virus DNA.
J Virol. 1981 Jan;37(1):518-23
PMID: 6261000
-
Evidence that the Abelson virus protein functions in vivo as a protein kinase that phosphorylates tyrosine.
Proc Natl Acad Sci U S A. 1981 Mar;78(3):1552-6
PMID: 6262813
-
The structure and protein kinase activity of proteins encoded by nonconditional mutants and back mutants in the sec gene of avian sarcoma virus.
Virology. 1981 Jan 15;108(1):47-70
PMID: 6267776