E. coli K-12 is the workhorse of molecular biology and the platform of choice for production of DNA, metabolites and proteins of industrial interest. To construct strains for the multitude of purposes, efficient genome manipulation methods are required. The suicide plasmid-mediated, homologous recombination-based gene replacement method is a convenient genome engineering tool. In consecutive recombination events, genomic integration of the plasmid, carrying the modified allele, is followed by its excision, resulting in either a modified genome or the original wild-type chromosome. Using the lac operon as a chromosomal target, we systematically investigated the effects of several factors influencing the outcome of the procedure. Recombinogenic activity was proportional to the length of the targeting homologous fragments. Presence of a properly oriented Chi site stabilized broken chromosomal ends and stimulated recombination in the downstream genomic region. Introduction of a double-stranded break in the chromosome had a profound stimulatory effect on recombination of the free DNA ends. These results shed light on some details of the complex events of intra-and intermolecular homologous recombination in the E. coli genome. Taking into account these findings at the assembly of the targeting plasmid constructs, serial genomic modifications can be created with enhanced efficiency and speed.
Blattner, F. R., Plunkett, G., III, Bloch, C. A., Perna, N. T., Burland, V., Riley, M., Collado-Vides, J., Glasner, J. D., Rode, C. K., Mayhew, G. F., Gregor, J., Davis, W. D., Kirkpatrick, H. A., Goeden, M. A., Rose, D. J., Mau, B., Shao, Y. (1997) The complete genome sequence of Escherichia coli K-12. Science 277 , 1453–1474.
Shao Y. , 'The complete genome sequence of Escherichia coli K-12 ' (1997 ) 277 Science : 1453 -1474 .
Burland, V., Plunkett, G., III, Daniels, D. L., Blattner, F. R. (1993) DNA sequence and analysis of 136 kilobases of the Escherichia coli genome: organizational symmetry around the origin of replication. Genomics 16 , 551–561.
Blattner F. R. , 'DNA sequence and analysis of 136 kilobases of the Escherichia coli genome: organizational symmetry around the origin of replication ' (1993 ) 16 Genomics : 551 -561 .
Court, D. L., Sawitzke, J. A., Thomason, L. C. (2002) Genetic engineering using homologous recombination. Annu. Rev. Genet. 36 , 361–388.
Thomason L. C. , 'Genetic engineering using homologous recombination ' (2002 ) 36 Annu. Rev. Genet. : 361 -388 .
Dabert, P., Smith, G. R. (1997) Gene replacement with linear DNA fragments in wild-type Escherichia coli: enhancement by Chi sites. Genetics 145 , 877–889.
Smith G. R. , 'Gene replacement with linear DNA fragments in wild-type Escherichia coli: enhancement by Chi sites ' (1997 ) 145 Genetics : 877 -889 .
Datsenko, K. A., Wanner, B. L. (2000) One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products. Proc. Natl. Acad. Sci. USA 97 , 6640–6645.
Wanner B. L. , 'One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products ' (2000 ) 97 Proc. Natl. Acad. Sci. USA : 6640 -6645 .
Dixon, D. A., Kowalczykowski, S. C. (1991) Homologous pairing in vitro stimulated by the recombination hotspot, Chi. Cell 66 , 361–371.
Kowalczykowski S. C. , 'Homologous pairing in vitro stimulated by the recombination hotspot, Chi ' (1991 ) 66 Cell : 361 -371 .
Dujon, B. (1989) Group I introns as mobile genetic elements: facts and mechanistic speculations — review. Gene 82 , 91–114.
Dujon B. , 'Group I introns as mobile genetic elements: facts and mechanistic speculations — review ' (1989 ) 82 Gene : 91 -114 .
Friedman-Ohana, R., Karunker, I., Cohen, A. (1998) Chi-dependent intramolecular recombination in Escherichia coli . Genetics 148 , 545–557.
Cohen A. , 'Chi-dependent intramolecular recombination in Escherichia coli ' (1998 ) 148 Genetics : 545 -557 .
Hamilton, C. M., Aldea, M., Washburn, B. K., Babitzke, P., Kushner, S. R. (1989) New method for generating deletions and gene replacements in Escherichia coli . J. Bacteriol. 171 , 4617–4622.
Kushner S. R. , 'New method for generating deletions and gene replacements in Escherichia coli ' (1989 ) 171 J. Bacteriol. : 4617 -4622 .
Hayashi, K., Morooka, N., Yamamoto, Y., Fujita, K., Isono, K., Choi, S., Ohtsubo, E., Baba, T., Wanner, B. L., Mori, H., Horiuchi, T. (2006) Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110. Mol. Syst. Biol. 2 , 2006.0007.
Kato, C., Ohmiya, R., Mizuno, T. (1998) A rapid method for disrupting genes in the Escherichia coli genome. Biosci. Biotechnol. Biochem. 62 , 1826–1829.
Mizuno T. , 'A rapid method for disrupting genes in the Escherichia coli genome ' (1998 ) 62 Biosci. Biotechnol. Biochem. : 1826 -1829 .
Khasanov, F. K., Zvingila, D. J., Zainullin, A. A., Prozorov, A. A., Bashkirov, V. I. (1992) Homologous recombination between plasmid and chromosomal DNA in Bacillus subtilis requires approximately 70 bp of homology. Mol. Gen. Genet. 234 , 494–497.
Bashkirov V. I. , 'Homologous recombination between plasmid and chromosomal DNA in Bacillus subtilis requires approximately 70 bp of homology ' (1992 ) 234 Mol. Gen. Genet. : 494 -497 .
Kolisnychenko, V., Plunkett, G., III, Herring, C. D., Fehér, T., Pósfai, J., Blattner, F. R., Pósfai, G. (2002) Engineering a reduced Escherichia coli genome. Gen. Res. 12 , 640–647.
Pósfai G. , 'Engineering a reduced Escherichia coli genome ' (2002 ) 12 Gen. Res. : 640 -647 .
Link, A. J., Phillips, D., Church, G. M. (1997) Methods for generating precise deletions and insertions in the genome of wild-type Escherichia coli: application to open reading frame characterization. J. Bacteriol. 179 , 6228–6237.
Church G. M. , 'Methods for generating precise deletions and insertions in the genome of wild-type Escherichia coli: application to open reading frame characterization ' (1997 ) 179 J. Bacteriol. : 6228 -6237 .
Maniatis, T., Fritsch, E. F., Sambook, J. (1982) Molecular Cloning: A Laboratory Manual . Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY.
Sambook J. , '', in Molecular Cloning: A Laboratory Manual , (1982 ) -.
Metcalf, W. W., Jiang, W., Daniels, L. L., Kim, S.-K., Haldimann, A., Wanner, B. L. (1996) Conditionally replicative and conjugative plasmids carrying lacZ alpha for cloning, mutagenesis, and allele replacement in bacteria. Plasmid 35 , 1–13.
Wanner B. L. , 'Conditionally replicative and conjugative plasmids carrying lacZ alpha for cloning, mutagenesis, and allele replacement in bacteria ' (1996 ) 35 Plasmid : 1 -13 .
Monteilhet, C., Perrin, A., Thierry, A., Colleaux, L., Dujon, B. (1990) Purification and characterization of the in vitro activity of I-SceI, a novel and highly specific endonuclease encoded by a group I intron. Nucleic Acids Res. 18 , 1407–1413.
Dujon B. , 'Purification and characterization of the in vitro activity of I-SceI, a novel and highly specific endonuclease encoded by a group I intron ' (1990 ) 18 Nucleic Acids Res. : 1407 -1413 .
Myers, R. S., Stahl, F. W. (1994) Chi and the RecBC D enzyme of Escherichia coli . Annu. Rev. Genet. 28 , 49–70.
Stahl F. W. , 'Chi and the RecBC D enzyme of Escherichia coli ' (1994 ) 28 Annu. Rev. Genet. : 49 -70 .
Pósfai, G., Koob, M. D., Kirkpatrick, H. A., Blattner, F. R. (1997) Versatile insertion plasmids for targeted genome manipulations in bacteria: isolation, deletion, and rescue of the pathogenicity island LEE of the Escherichia coli 0157:H7 genome. J. Bacteriol. 179 , 4426–4428.
Blattner F. R. , 'Versatile insertion plasmids for targeted genome manipulations in bacteria: isolation, deletion, and rescue of the pathogenicity island LEE of the Escherichia coli 0157:H7 genome ' (1997 ) 179 J. Bacteriol. : 4426 -4428 .
Pósfai, G., Kolisnychenko, V., Bereczki, Z., Blattner, F. R. (1999) Markerless gene replacement in Escherichia coli stimulated by a double-stand break in the chromosome. Nucleic Acids Res. 27 , 4409–4415.
Blattner F. R. , 'Markerless gene replacement in Escherichia coli stimulated by a double-stand break in the chromosome ' (1999 ) 27 Nucleic Acids Res. : 4409 -4415 .
Pósfai, G., Plunkett, G., III, Fehér, T., Frisch, D., Keil, G. M., Umenhoffer K., Kolisnychenko, V., Stahl, B., Sharma, S. S., de Arruda, M., Burland, V., Harcum, S. W., Blattner, F. R. (2006) Emergent properties of reduced-genome Escherichia coli . Science 312(5776) , 1044–1046.
Blattner F. R. , 'Emergent properties of reduced-genome Escherichia coli ' (2006 ) 312 Science : 1044 -1046 .
Riley, M., Abe, T., Arnaud, M. B., Berlyn, M. K. B., Blattner, F. R., Chaudhuri, R. R., Glasner, J. D., Horiuchi, T., Keseler, I. M., Kosuge, T., Mori, H., Perna, N. T., Plunkett, G., III, Rudd, K. E., Serres, M. H., Thomas, G. H., Thomson, N. R., Wishart, D., Wanner, B. L. (2006) Escherichia coli K-12: a cooperatively developed annotation snapshot-2005. Nucleic Acids Res. 34 , 1–9.
Wanner B. L. , 'Escherichia coli K-12: a cooperatively developed annotation snapshot-2005 ' (2006 ) 34 Nucleic Acids Res. : 1 -9 .
Rinken, R., Thomas, B., Wackernagel, W. (1992) Evidence that recBC -dependent degradation of duplex DNA in Escherichia coli recD mutants involves DNA unwinding. J. Bacteriol. 174 , 5424–5429.
Wackernagel W. , 'Evidence that recBC-dependent degradation of duplex DNA in Escherichia coli recD mutants involves DNA unwinding ' (1992 ) 174 J. Bacteriol. : 5424 -5429 .
Russell, C. B., Thaler, D. S., Dahlquist, F. W. (1989) Chromosomal transformation of Escherichia coli recD strains with linearized plasmids. J. Bacteriol. 171 , 2609–2613.
Dahlquist F. W. , 'Chromosomal transformation of Escherichia coli recD strains with linearized plasmids ' (1989 ) 171 J. Bacteriol. : 2609 -2613 .
Sambrook, J., Fritsch, E. F., Maniatis, T. (1989) Molecular Cloning: A Laboratory Manual . pp. 1.82–1.84, A.1–A.2, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.
Maniatis T. , '', in Molecular Cloning: A Laboratory Manual , (1989 ) -.
Serres, M. H., Goswami, S., Riley, M. (2004) GenProtEC: an updated and improved analysis of functions of Escherichia coli K-12 proteins. Nucleic Acids Res. 32 , D300.
Riley M. , 'GenProtEC: an updated and improved analysis of functions of Escherichia coli K-12 proteins ' (2004 ) 32 Nucleic Acids Res. : D300 -.
Stahl, F. W. (2005) Chi: a little sequence controls a big enzyme. Genetics 170 , 487–493.
Stahl F. W. , 'Chi: a little sequence controls a big enzyme ' (2005 ) 170 Genetics : 487 -493 .
Woodcock, D. M., Crowther, P. J., Doherty, J., Jefferson, S., DeCruz, E., Noyer-Weidner, M., Smith, S. S., Michael, M. Z., Graham, M. W. (1989) Quantitative evaluation of Escherichia coli host strains for tolerance to cytosine methylation in plasmid and phage recombinants. Nucleic Acids Res. 17 , 3469–3478.
Graham M. W. , 'Quantitative evaluation of Escherichia coli host strains for tolerance to cytosine methylation in plasmid and phage recombinants ' (1989 ) 17 Nucleic Acids Res. : 3469 -3478 .
Zhang, Y., Buchholz, F., Muyrers, J. P., Stewart, A. F. (1998) A new logic for DNA engineering using recombination in Escherichia coli . Nat. Genet. 20 , 123–128.
Stewart A. F. , 'A new logic for DNA engineering using recombination in Escherichia coli ' (1998 ) 20 Nat. Genet. : 123 -128 .