Dai H, Tsay S H, Lund P M, Cox B S
Institute of Botany, Academia Sinica, Taipei, Republic of China.
Curr Genet. 1986;11(1):79-82. doi: 10.1007/BF00389429.
DNA enriched for supercoiled plasmids prepared from the 3 micron plasmid-enriched, [psi+], [2 micron degrees] strain 6-1G-P188 and from the [2 micron+] [psi+] strain LL20 can be used to transform a psi- recipient strain to psi+. Fractionation of the former preparation by electrophoresis showed that the 3 micron plasmid band contained the transforming activity.
从富含3微米质粒的[psi+]、[2微米°]菌株6-1G-P188以及[2微米+][psi+]菌株LL20制备的富含超螺旋质粒的DNA,可用于将psi-受体菌株转化为psi+。对前一种制备物进行电泳分级分离表明,3微米质粒条带含有转化活性。