Hausmann C, Clowes R C
J Bacteriol. 1971 Sep;107(3):633-5. doi: 10.1128/jb.107.3.633-635.1971.
An Escherichia coli K-12 strain and its mutant, temperature-sensitive in deoxyribonucleic acid (DNA) synthesis, were used as hosts for two different ColB factors (ColB3-K166 and ColB4-K98). Induction of either colicin occurred in both hosts in the presence of mitomycin C at 42 C. Induction of the temperature-sensitive colicinogenic hosts also occurred without mitomycin C at 42 C at which temperature no DNA synthesis was observed. Colicin synthesis was a nonlethal event in ColB4-K98(+) cultures, whereas in cultures of ColB3-K166(+) induction led to death of a large fraction of the population.
一株大肠杆菌K-12菌株及其在脱氧核糖核酸(DNA)合成中对温度敏感的突变体,被用作两种不同的ColB因子(ColB3-K166和ColB4-K98)的宿主。在42℃下,丝裂霉素C存在时,两种宿主中均会发生任何一种大肠杆菌素的诱导。对温度敏感的产大肠杆菌素宿主在42℃下,即使没有丝裂霉素C也会发生诱导,而在该温度下未观察到DNA合成。在ColB4-K98(+)培养物中,大肠杆菌素合成是一个非致死事件,而在ColB3-K166(+)培养物中,诱导导致大部分群体死亡。