Genome-wide mapping of heteroduplex DNA (a recombination intermediate) formed during mitotic recombination in yeast demonstrates that the "classical" model of double-strand DNA break repair is inadequate to explain several aspects of mitotic recombination.
DNA-bound crystal structures of an essential Xer site-specific recombinase from the bacterium Helicobacter pylori reveal how large conformational changes initiate the untangling of chromosomes upon cell division.
The structure of the recombination complex responsible for flagellar antigen switching in Salmonella enterica, and the mechanism that regulates the site-specific DNA inversion reaction, have been determined.
In humans, specific sequence features can predict whether meiotic recombination occurs at sites bound by the protein PRDM9, whose DNA-binding zinc-finger domain can unexpectedly bind to gene promoters and to other copies of PRDM9.
The intrinsically disordered N-terminus of Sfr1 contains two Rad51 binding sites that facilitate Rad51 filament stabilization and ATPase stimulation by the Swi5-Sfr1 complex, leading to efficient Rad51-driven strand exchange.