Ronda C, Lopez R, Tomasz A, Portoles A
J Virol. 1978 May;26(2):221-5. doi: 10.1128/JVI.26.2.221-225.1978.
It was possible to transfect Streptococcus pneumoniae with DNA obtained from a newly isolated bacteriophage, diplophage-4 (Dp-4). Optimal frequency of transfection (0.9%) required the use of a nuclease-defective mutant; with wild-type bacteria, the transfection frequency was about 100-fold lower. Transfection requires physiological conditions that appear to be similar to the competent state needed for genetic transformation (A. Tomasz, J. Bacteriol. 91:1050--1061, 1966).
用从新分离的噬菌体双噬菌体-4(Dp-4)获得的DNA转染肺炎链球菌是可行的。转染的最佳频率(0.9%)需要使用核酸酶缺陷型突变体;对于野生型细菌,转染频率约低100倍。转染需要的生理条件似乎与遗传转化所需的感受态相似(A. 托马兹,《细菌学杂志》91:1050 - 1061,1966)。