... arrowindicates the DNA fragment that containsthe original MsH43 sequence, and asterisksmark the DNA fragment containing altera-tions in the size of MsH43 (unequal recomb-inants). (B) Analysis ... understandard conditions [8]. After incubation, DNA wasextracted and used to transform bacteria. The recombi-Effect of cations and G-quartets on recombination P. Barros et al.2984 FEBS Journal ... theexperiments containing KCl, NaCl, or NH4Cl, the saltswere added to a final concentration of 20 mm. Severalconcentrations of salts were assayed (5, 10, 15, 20, and 25 mm), and a concentration of 20...