title: DNA polymerase and simian virus 40 infection of resting monkey cells: induction of aphidicolin resistant alpha-polymerase.
abstract: Tightly confluent monkey cell lines BSC-1 and CV-1 held in stale medium for several days exhibited an extremely low level of thymidine incorporation into cellular DNA. Yet, these cells contained a level of alpha-polymerase equal to about 15% of the level in rapidly dividing cells, and they still were capable of supporting replication of SV40 DNA. SV40 infection and culture in stale medium resulted in a four-fold induction of alpha-polymerase in CV-1 cells, whereas no change in alpha-polymerase level was observed in BSC-1 cells. Characterization of alpha-polymerase partially purified from infected CV-1 cells revealed that 80-90% of the enzyme activity was aphidicolin resistant. SV40 DNA replication in resting CV-1 cells, however, was aphidicolin sensitive. SV40 infection of resting CV-1 cells may induce an aphidicolin-resistant enzyme or lead to a modified alpha-polymerase species.
mesh_terms: D000818:Animals; D016590:Aphidicolin; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002522:Chlorocebus aethiops; D004257:DNA Polymerase II / Q000037:antagonists & inhibitors / Q000235:genetics* / Q000302:isolation & purification; D004261:DNA Replication; D004259:DNA-Directed DNA Polymerase / Q000302:isolation & purification; D004224:Diterpenes / Q000633:toxicity*; D007668:Kidney; D007700:Kinetics; D013539:Simian virus 40 / Q000201:enzymology / Q000235:genetics*
chemical_list: D004224:Diterpenes; D016590:Aphidicolin; D004257:DNA Polymerase II; D004259:DNA-Directed DNA Polymerase