Sclafani R A, Wechsler J A
Genetics. 1981 Aug;98(4):677-89. doi: 10.1093/genetics/98.4.677.
The region that includes the dnaB locus on the E. coli K12 chromosome was shown to be duplicated at high frequency in cell populations. The duplications were shown to be arranged in tandem and segregated at various frequencies. Segregation was dependent on the recA recombination system, but independent of recB,C. Though most of the data was obtained with dnaB::Tn10 insertion mutants, the duplications were shown to occur in the absence of Tn10.
包含大肠杆菌K12染色体上dnaB基因座的区域在细胞群体中被证明会高频重复。这些重复序列呈串联排列,并以不同频率分离。分离依赖于recA重组系统,但不依赖于recB、C。尽管大部分数据是通过dnaB::Tn10插入突变体获得的,但重复序列在没有Tn10的情况下也会出现。