PMID- 440966 OWN - NLM STAT- MEDLINE DCOM- 19790716 LR - 20190501 IS - 0305-1048 (Print) IS - 1362-4962 (Electronic) IS - 0305-1048 (Linking) VI - 6 IP - 3 DP - 1979 Mar TI - The DNA polymerases associated with the adenovirus type 2 replication complex: effect of 2'-3'-dideoxythymidine-5'-triphosphate on viral DNA synthesis. PG - 1025-39 AB - An adenovirus (Ad) DNA replication complex extracted from infected HeLa nuclei could be purified free of the bulk of intracellular DNA polymerase activity by sedimetation in neutral sucrose gradients. However, the replication complex still retained some alpha and gamma DNA-polymerase activity. Since this complex is inhibited by 2', 3' dideoxythymidine-5'-triphosphate (ddTTP), an inhibitor of DNA polymerase gamma, a functional role for this enzyme in Ad DNA replication is suggested. Similar inhibition by ddTTP in intact Ad infected nuclei and comparable inhibition of Ad DNA synthesis in whole cells by dideoxythymidine (ddThy) are consistent with a role for DNA polymerase gamma. Uninfected HeLa nuclei or whole cells are not similarly inhibited by ddTTP or DDThy respectively. Such data does not rule out an additional functional role for other DNA polymerases, and recent experiments from this laboratory (1) suggest that DNA polymerase alpha is also involved in Ad DNA synthesis. FAU - Abboud, M M AU - Abboud MM FAU - Horwitz, M S AU - Horwitz MS LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Nucleic Acids Res JT - Nucleic acids research JID - 0411011 RN - 0 (DNA, Viral) RN - 0 (Thymine Nucleotides) RN - EC 2.7.7.7 (DNA-Directed DNA Polymerase) RN - VC2W18DGKR (Thymidine) SB - IM MH - Adenoviruses, Human/*enzymology MH - Cell Nucleus/enzymology MH - *DNA Replication MH - DNA, Viral/*biosynthesis MH - DNA-Directed DNA Polymerase/isolation & purification/*metabolism MH - HeLa Cells MH - Humans MH - Kinetics MH - Thymidine/analogs & derivatives/pharmacology MH - Thymine Nucleotides/*pharmacology MH - Virus Replication PMC - PMC327750 EDAT- 1979/03/01 00:00 MHDA- 1979/03/01 00:01 CRDT- 1979/03/01 00:00 PHST- 1979/03/01 00:00 [pubmed] PHST- 1979/03/01 00:01 [medline] PHST- 1979/03/01 00:00 [entrez] AID - 10.1093/nar/6.3.1025 [doi] PST - ppublish SO - Nucleic Acids Res. 1979 Mar;6(3):1025-39. doi: 10.1093/nar/6.3.1025.