Effect of NH4+ ions on phi 29 DNA-protein p3 replication: formation of a complex between the terminal protein and the DNA polymerase.

Blanco L, Prieto I, Gutiérrez J, Bernad A, Lázaro JM, Hermoso JM, Salas M
J Virol (1987), Volume 61, Page 3983
PubMed entry Full article text

Abstract:

Ammonium ions stimulated the formation of the phi diameter 29 protein ...
Ammonium 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.

Polymerases:

Phi29

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