title: DNA polymerase activities in growing cells infected with simian virus 40.
abstract: Growing CV1 cells were infected with simian virus 40 (SV40), and the levels of DNA polymerases-alpha, -beta, and -gamma were analyzed in the cytoplasm, nuclear Triton wash, and nucleus. In the cytoplasmic fraction, the amount of alpha-, beta-, or gamma-polymerase remained unaltered after SV40 infection. The activity of DNA polymerase-alpha increased five- to sixfold in the nuclear Triton wash and threefold in the nuclei and then remained enhanced only inside the nuclei. That of DNA polymerases-beta and gamma increased mostly in the nuclei after infection. These results suggest that DNA polymerase-alpha could be the major enzyme involved in SV40 DNA replication.
mesh_terms: D002460:Cell Line; D002467:Cell Nucleus / Q000201:enzymology; D002474:Cell-Free System; D003593:Cytoplasm / Q000201:enzymology; D004256:DNA Polymerase I / Q000378:metabolism; D004257:DNA Polymerase II / Q000378:metabolism; D004258:DNA Polymerase III / Q000378:metabolism; D004279:DNA, Viral / Q000096:biosynthesis; D004259:DNA-Directed DNA Polymerase / Q000378:metabolism*; D012194:RNA-Directed DNA Polymerase / Q000378:metabolism; D013539:Simian virus 40 / Q000254:growth & development* / Q000378:metabolism; D013347:Subcellular Fractions; D013698:Templates, Genetic
chemical_list: D004279:DNA, Viral; D012194:RNA-Directed DNA Polymerase; D004256:DNA Polymerase I; D004257:DNA Polymerase II; D004258:DNA Polymerase III; D004259:DNA-Directed DNA Polymerase