In general recombination in E. coli, the protein that binds ssDNA forming a nucleoprotein filament capable of strand invasion and homologous pairing is:

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RecA is the protein that binds ssDNA forming a nucleoprotein filament capable of strand invasion and homologous pairing in general recombination in E. coli. The other choices are involved in different steps of the recombination process, such as the formation of a Holliday junction (RuvB and RuvA) or the resolution of the junction (RuvC). The RecBCD complex is involved in the initial processing of DNA ends before strand invasion by RecA.

In General Recombination in E