Transpositional activity of mobile elements can be induced by different environmental
stresses. Here, we present evidence that transposition of Tn 4652 is elevated in stationary …

Transpositional activity of mobile elements is not constant. Conditional regulation of host
factors involved in transposition may severely change the activity of mobile elements. We …

The main sigma factor activating gene expression, necessary in stationary phase and under
stress conditions, is ςS. In contrast to other minor sigma factors, RNA polymerase …

We have previously shown that both ends of the Tn 3 family transposon Tn 4652 contain
integration host factor (IHF) binding sites and that IHF positively regulates expression of the …

ABSTRACT IS 1, the smallest active transposable element in bacteria, encodes a
transposase that promotes inter-and intramolecular transposition. Host-encoded factors, eg …

It is shown here that the bacterial insertion sequence IS911 exhibits a temperature‐sensitive
transposition phenotype. Previous results have demonstrated that elevated levels of the …

Global transposon mutagenesis is a valuable tool for identifying genes required for cell
viability. Here we present a global analysis of the orientation of viable Tn 5-Puror (Tn 5 …

The bacterial transposon Tn5 encodes two proteins, the transposase and a related prot, ein,
the transposition inhibitor, whose relative abundance deter mines, in part, the frequency of …

Mobile genetic elements (MGEs) play a central role in the evolution of bacterial genomes.
Transposable elements (TE: transposons and insertion sequences) represent an important …

Directed mutation is a proposed process that allows mutations to occur at higher frequencies
when they are beneficial. Until now, the existence of such a process has been controversial …