Words similar to reca
Example sentences for: reca
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This is expected because RecF-mediated recombination is non-conservative in the sense that it generates only one progeny DNA molecule from two parental DNA molecules [ 10 ] . Alternatively, RecF function may somehow help generation of broken chromosomes or maintenance of break to load RecA [ 23 ] .
For example, under the reconstruction, recA is part of a contiguous deleted region of about 10 kb containing ten genes.
For example, if the 10 kb segment containing recA was lost as a single deletion, then the loss of recA was dependent on the fact that the neighboring genes included in the deletion were not essential for survival.
Studies in Escherichia coli have shown that, although RecA is the principle protein involved in pairing and strand exchange, unrelated proteins, that have a much more restrictive phyletic distribution, can also promote similar reactions in a RecA dependent or RecA-independent manner [ 3 ] . These alternative or additional mediators of homologous recombination include the well-characterized prophage RecT, phage λ Redβ and phage P22 ERF proteins [ 4 5 ] . Similarly, in yeast and vertebrates, the RAD52 protein is involved in the pairing and strand exchange reaction and can promote recombination in a RAD51 (the eukaryotic RecA homolog)-dependent or independent manner [ 6 ] . The RecT protein works in conjunction with the RecE-nuclease [ 7 ] and was initially described in genetic studies on the complemention of mutations in the RecBCD pathway of DNA repair [ 8 9 10 ] . Biochemically, RecT has been shown to bind single-stranded (ss) DNA 3' overhang regions generated by the RecE nuclease, and promote strand exchange between homologous DNA partners by assisting the pairing of complementary single-stranded regions [ 4 10 ] . The reaction catalyzed by the RecT/RecE system is similar to that described for the phage λ exonuclease (exo/Redβ) and the single-strand annealing protein Redβ.
With the exception of lost genes, the Buchnera genome might reflect the gene order it had when the bacterium became an endosymbiont and lost recA.
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