Article
Functions of multiple exonucleases are essential for cell viability, DNA repair and homologous recombination in recD mutants of Escherichia coli.
Genetics - 1 Apr 2006
Dermić Damir
Abstract excerpt
Heterotrimeric RecBCD enzyme unwinds and resects a DNA duplex containing blunt double-stranded ends and directs loading of the strand-exchange protein RecA onto the unwound 3'-ending strand, thereby initiating the majority of recombination in wild-type Escherichia coli. When the enzyme lacks its RecD subunit, the resulting RecBC enzyme, active in recD mutants, is recombination proficient although it has only...
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