▪ Abstract Atomic force microscopy is an imaging tool used widely in fundamental research,
although it has, like other scanned probe microscopies, provided only limited information …

540 KOWALCZYKOWSKI a protein essential for homologous recombination in E. coli,
promotes the pairing and exchange of strands between homologous DNA molecules. The …

THE recA protein catalyses the ATP-driven homologous pairing and strand exchange of
DNA molecules1–3. It is an allosteric enzyme: the ATPase activity is DNA-dependent4, 5 …

Homologous pairing and strand exchange, which are catalyzed by Escherichia coli RecA
protein, are central to homologous recombination. Homologs of this protein are found in …

The recombination of DNA molecules has been reconstituted in vitro using two purified
enzymes from Escherichia coli. RecA protein catalyses homologous pairing and strand …

The SOS-inducible ruvA and ruvB gene products of Escherichia coli are required for normal
levels of genetic recombination and DNA repair. In vitro, RuvA protein interacts specifically …

Homologous recombination is a class of genetic recombination where joining of the DNA
duplexes takes place in the absence of specific protein-DNA sites. Since the exchange can …

We previously showed that the in vitro transcription of a negatively supercoiled plasmid
containing the murine IgA switch region caused the formation of fewer supercoiled …

Background: Specific interactions between complementary strands of DNA and other
molecules are central to the storage, retrieval and modification of information in biological …

We show that recombinases form joint molecules over very short regions of homology. When
these molecules are deproteinized the three strands are in a structure that is surprisingly …