Recombineering

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Recombineering is a method where E-coli undergoes recombination between linear DNA, introduced through electroporation, with circularized DNA already present within the cell.


http://recombineering.ncifcrf.gov/


[math]\displaystyle{ \lambda }[/math] phage exo, bet, and gam genes are integrated into E-coli to demonstrate phage promoted homologous recombination. Murphy 1998 [math]\displaystyle{ \lambda }[/math] Red-Promoted Gene Replacement


To acheive control over phage recombination gene activity, temperature sensitive [math]\displaystyle{ \lambda }[/math] repressor (cI857) was introduced. Yu 2000 An efficient recombination system for chromosome engineering in Escherichia coli


This process is then adapted to E-coli strain DH10B, a Bacteria Artificial Chromosome (BAC)strain. This results in the original recombineering E-coli strain designated DY380 as well as other versions modified to include different selection mechanisms. Lee 2001. A highly efficient Escherichia coli-based chromosome engineering system adapted for recombinogenic targeting and subcloning of BAC DNA


All about the [math]\displaystyle{ \lambda }[/math] phage recombination proteins!!

Little 1967 An Exonuclease Induced by phage [math]\displaystyle{ \lambda\lt \math\gt [http://www.jbc.org/cgi/content/abstract/256/24/12636 Kmiec 1981]\lt math\gt \beta\lt \math\gt protein of phage \lt math\gt \lambda\lt \math\gt promotes renaturation of DNA [http://www.jbc.org/cgi/content/abstract/261/16/7472 Muniyappa 1986] Pairing activities of \lt math\gt \beta\lt \math\gt protein in phage \lt math\gt \lambda\lt \math\gt . [http://www.jbc.org/cgi/content/abstract/250/18/7377 Karu 1975] How \lt math\gt \gamma\lt \math\gt protein specified by phage \lt math\gt \lambda\lt \math\gt affects recBC enzyme in E. Coli [http://jb.asm.org/cgi/gca?sendit=Get+All+Checked+Abstract%28s%29&SEARCHID=1&VOLUME=173&FIRSTPAGE=5808&FIRSTINDEX=0&hits=10&RESULTFORMAT=&gca=jb%3B173%2F18%2F5808 Murphy 1991] \lt math\gt \gamma\lt \math\gt protein of phage \lt math\gt \lambda\lt \math\gt inhibits recombination activites of RecBCD enzyme. [http://www.jbc.org/cgi/content/abstract/246/8/2502 Carter 1971] Roles of Exonuclease and \lt math\gt \beta\lt \math\gt protein of phage \lt math\gt \lambda\lt \math\gt in recombination }[/math]