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Effect of NH4 + ions on ø29 DNA-protein p3 replication: Formation of a complex between the terminal protein and the DNA polymerase

AuthorsBlanco, Luis ; Prieto, Ignacio; Gutiérrez, Julio; Bernad, Antonio; Lázaro, José M. ; Hermoso, José Miguel; Salas, Margarita
Issue Date1987
PublisherAmerican Society for Microbiology
CitationJournal of Virology 58(1): 31-35 (1987)
AbstractAmmonium ions stimulated the formation of the phi diameter 29 protein p3-dAMP initiation complex by decreasing the Km value for dATP in a purified system containing the viral terminal protein p3, the viral DNA polymerase p2, and the phi 29 DNA-protein p3 complex as a template. In addition, NH4+ ions stimulated the amount of p3-dAMP complex elongation and increased by about twofold the rate of elongation. The stimulatory effect of NH4+ ions on in vitro phi 29 DNA replication is probably related to the formation of a stable complex between the terminal protein and the DNA polymerase, which was detected only in the presence of NH4+ ions.
Publisher version (URL)http://jvi.asm.org/cgi/content/abstract/61/12/3983
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