Multicopy derivative of pock-forming plasmid pSA1 in Streptomyces azureus.

@article{Miyoshi1986MulticopyDO,
  title={Multicopy derivative of pock-forming plasmid pSA1 in Streptomyces azureus.},
  author={Yasuo Miyoshi and S. -i. Ogata and Shinsaku Hayashida},
  journal={Journal of bacteriology},
  year={1986},
  volume={168 1},
  pages={452-4}
}
Streptomyces azureus carried one copy or less of plasmid pSA1, which elicited pocks at 0.1 to 1.0%. Strain PK100 was isolated from the wild-type strain after UV irradiation. PK100 carried approximately 20 to 30 copies of pSA1.1, a derivative of pSA1. Plasmid pSA1.1 elicited pocks at 100% and inhibited spore and thiostrepton production.