Gukova L A, Avdienko I D
Genetika. 1978;14(7):1278-80.
The contransduction frequency of MAAs, UVs phenotype of Escherichia coli HfrC7 and its 7-51F- derivative with purE markers is found to be 1-2% which indicates that the mutation N 7 is located close to the F integration site in HfrC strain. E. coli strains K-12 7-51F+ and 7-51ColV2+ transfer chromosome markers in the same direction as does HfrC strain. The results suggest the presence of an integrated F fragment (sfa locus) into K-12 7-51F- chromosome.
发现带有purE标记的大肠杆菌HfrC7及其7 - 51F - 衍生物的MAAs共转导频率和UVs表型为1 - 2%，这表明N 7突变位于HfrC菌株的F整合位点附近。大肠杆菌K - 12 7 - 51F + 和7 - 51ColV2 + 菌株转移染色体标记的方向与HfrC菌株相同。结果表明在K - 12 7 - 51F - 染色体中存在一个整合的F片段（sfa位点）。
