Enzymatic properties of viral replication complexes isolated from adenovirus type 2-infected HeLa cell nuclei

Author:

Brison O,Kedinger C,Wilhelm J

Abstract

When HeLa cell nuclei, isolated 17 h after infection with adenovirus type 2 (Ad2), were extracted with 200 mM ammonium sulfate, Ad2 nucleoprotein complexes were selectively released. These complexes contained a DNA polymerase activity that corresponded to DNA polymerase molecules actively engaged in Ad2 DNA replication. Under our high-salt (200 mM ammonium sulfate) incubation conditions, where no reinitiation occurred, full-length Ad2 DNA chains were synthesized by elongation of chains that had been initiated in vivo. This conclusion was further supported by density labeling experiments indicating that the in vitro DNA synthesis was semiconservative. Evidence is presented suggesting that at least part of the DNA polymerase molecules engaged in Ad2 DNA replication belong to the gamma class.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

Reference40 articles.

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