Recently, we have developed an in vivo cloning and gene modification system using lambda-mediated homologous recombination (Red). This system eliminates the need to cut DNA with restriction enzymes or join DNA fragments with DNA ligase. This extremely efficient recombination system will we believe, revolutionize the way in which recombinant DNA work is done. Both ssDNA oligos (as short as 20 bases) and linear dsDNA (as short as 30 bp) can be used to generate recombinants on the bacterial chromosome, on plasmids, or on genomic BAC library clones. ssDNA oligos have been used to create point mutations, to repair mutations, to create deletions, and to create small insertions on the chromosome and in BAC clones. Recombination of ssDNA requires only the lambda phage Beta protein which binds the ssDNA oligonucleotide that is electroporated into cells and anneals that nucleotide to its target homology in the cell. Annealing occurs to the ssDNA intermediates that form during replication. Recombination of long dsDNA (>1000bp) requires lambda phage functions Exo and Gam in addition to Beta. Exo degrades 5' ends of dsDNA generating ssDNA overhangs for Beta to bind. Gam inhibits host nucleases which destroy the entering linear DNA. Various bacterial vectors have been developed to ensure efficient and accurate genetic engineering via this in vivo recombineering technology.

Agency
National Institute of Health (NIH)
Institute
Division of Basic Sciences - NCI (NCI)
Type
Intramural Research (Z01)
Project #
1Z01BC010336-04
Application #
6951643
Study Section
(GRCB)
Project Start
Project End
Budget Start
Budget End
Support Year
4
Fiscal Year
2003
Total Cost
Indirect Cost
Name
Basic Sciences
Department
Type
DUNS #
City
State
Country
United States
Zip Code
Thomason, Lynn C; Oppenheim, Amos B; Court, Donald L (2009) Modifying bacteriophage lambda with recombineering. Methods Mol Biol 501:239-51
Luo, Xiao; Hsiao, He-Hsuan; Bubunenko, Mikhail et al. (2008) Structural and functional analysis of the E. coli NusB-S10 transcription antitermination complex. Mol Cell 32:791-802
Gan, Jianhua; Shaw, Gary; Tropea, Joseph E et al. (2008) A stepwise model for double-stranded RNA processing by ribonuclease III. Mol Microbiol 67:143-54
Korepanov, Alexey P; Gongadze, George M; Garber, Maria B et al. (2007) Importance of the 5 S rRNA-binding ribosomal proteins for cell viability and translation in Escherichia coli. J Mol Biol 366:1199-208
Court, Donald L; Oppenheim, Amos B; Adhya, Sankar L (2007) A new look at bacteriophage lambda genetic networks. J Bacteriol 189:298-304
Chan, Waiin; Costantino, Nina; Li, Ruixue et al. (2007) A recombineering based approach for high-throughput conditional knockout targeting vector construction. Nucleic Acids Res 35:e64
Sawitzke, James A; Thomason, Lynn C; Costantino, Nina et al. (2007) Recombineering: in vivo genetic engineering in E. coli, S. enterica, and beyond. Methods Enzymol 421:171-99
Thomason, Lynn C; Costantino, Nina; Shaw, Dana V et al. (2007) Multicopy plasmid modification with phage lambda Red recombineering. Plasmid 58:148-58
Bubunenko, Mikhail; Korepanov, Alexey; Court, Donald L et al. (2006) 30S ribosomal subunits can be assembled in vivo without primary binding ribosomal protein S15. RNA 12:1229-39
Datta, Simanti; Costantino, Nina; Court, Donald L (2006) A set of recombineering plasmids for gram-negative bacteria. Gene 379:109-15

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