title: Production of a T-antigen-related protein in mammalian cells after stable transformation with a cloned SV40 gene fragment.
abstract: A recombinant plasmid based on pBR322 has been constructed which carries the replicator proximal early region of SV40 DNA, including the viral origin of replication (ORI). It lacks a major part of the tumour antigen 3'-coding region, the large T-antigen termination codon and the polyadenylation site. The recombinant plasmid was transferred together with the herpes simplex virus thymidine kinase gene, as a selectable marker into mouse LTK- cells. Integration and expression of the cloned SV40 gene fragment in TK+ transformants could be demonstrated by DNA restriction and blot hybridization and by immunofluorescence techniques.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000235:genetics*; D000957:Antigens, Viral, Tumor; D002472:Cell Transformation, Viral; D003001:Cloning, Molecular; D004274:DNA, Recombinant; D004279:DNA, Viral / Q000235:genetics; D005814:Genes, Viral; D007739:L Cells / Q000201:enzymology; D051379:Mice; D010957:Plasmids; D013539:Simian virus 40 / Q000235:genetics*; D018139:Simplexvirus / Q000235:genetics; D013937:Thymidine Kinase / Q000235:genetics
chemical_list: D000956:Antigens, Viral; D000957:Antigens, Viral, Tumor; D004274:DNA, Recombinant; D004279:DNA, Viral; D013937:Thymidine Kinase