Hughes V, Le Grice S, Hughes C, Meynell G G
Mol Gen Genet. 1978 Feb 16;159(2):219-21. doi: 10.1007/BF00270897.
Colicin factors are thought to fall into two taxonomic groups which differ in, amongst other properties, the molecular weight of the plasmid DNA and the host range of the colicin protein. This hypothesis is supported by the plasmids found in 26 colicinogenic strains. Two small Col factors may have arisen from larger factors, judging from similarities between their colicins.
大肠杆菌素因子被认为可分为两个分类学组，这两组在其他特性中，质粒DNA的分子量和大肠杆菌素蛋白的宿主范围有所不同。这一假设得到了在26株产大肠杆菌素菌株中发现的质粒的支持。从它们的大肠杆菌素之间的相似性判断，两个小的大肠杆菌素因子可能是由较大的因子产生的。
