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  • Title: A novel DNA polymerase induced by Bacillus subtilis phage phi 29.
    Author: Watabe K, Ito J.
    Journal: Nucleic Acids Res; 1983 Dec 10; 11(23):8333-42. PubMed ID: 6424095.
    Abstract:
    A novel DNA polymerase induced by Bacillus subtilis bacteriophage phi 29 has been identified. This polymerase can be separated from host DNA polymerase, by fractionation of extracts prepared from phage infected cells, using phosphocellulose chromatography. The isolated polymerase prefers poly(dA)oligo(dT) as template. The DNA polymerase isolated from the cells infected with a gene 2 temperature sensitive mutant (ts2) showed greater heat-lability than that induced by wild type phi 29. The ts2 DNA polymerase was also thermolabile for its activity in the formation of a covalent complex between phi 29 terminal protein and dAMP, the initiation step of phi 29 DNA replication. These findings indicate that gene 2 is the structural gene for a phi 29 DNA polymerase required for the complex formation step of DNA initiation.
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