Kenan C. Murphy

Dam methyltransferase is required for stable lysogeny of the Shiga toxin (Stx2)-encoding bacteriophage 933W of enterohemorrhagic Escherichia coli O157:H7 (2007)

Murphy, Kenan C., Ritchie, Jennifer M., Waldor, Matthew K., Lobner-Olesen, Anders, Marinus, Martin G.

Shiga toxin 2 (Stx2), one of the principal virulence factors of enterohemorrhagic Escherichia coli, is encoded by 933W, a lambda-like prophage. 933W prophage induction contributes to Stx2 production,...

Increased adherence and actin pedestal formation by dam-deficient enterohaemorrhagic Escherichia coli O157:H7 (2007)

Campellone, Kenneth Geno, Roe, Andrew J., Lobner-Olesen, Anders, Murphy, Kenan C., Magoun, Loranne, Brady, Michael J., ...

Enterohaemorrhagic Escherichia coli (EHEC) are highly infectious pathogens capable of causing severe diarrhoeal illnesses. As a critical step during their colonization, EHEC adhere intimately to...

Lambda Red-mediated recombinogenic engineering of enterohemorrhagic and enteropathogenic E. coli (2003)

Murphy, Kenan C., Campellone, Kenneth Geno

BACKGROUND: The lambda Red recombineering technology has been used extensively in Escherichia coli and Salmonella typhimurium for easy PCR-mediated generation of deletion mutants, but less so in...

Lambda Red-mediated recombinogenic engineering of enterohemorrhagic and enteropathogenic E. coli (2003)

Murphy, Kenan C, Campellone, Kenneth G

Abstract Background The λ Red recombineering technology has been used extensively in Escherichia coli and Salmonella typhimurium for easy PCR-mediated generation of deletion mutants, but less so in...

Mutational analysis of the MutH protein from Escherichia coli (2001)

Loh, Tamalette, Murphy, Kenan C., Marinus, Martin G.

Site-directed mutagenesis was performed on several areas of MutH based on the similarity of MutH and PvuII structural models. The aims were to identify DNA-binding residues; to determine whether MutH...

Mutational analysis of the MutH protein from Escherichia coli (2001)

Loh, Tamalette, Murphy, Kenan C., Marinus, Martin G.

Site-directed mutagenesis was performed on several areas of MutH based on the similarity of MutH and PvuII structural models. The aims were to identify DNA-binding residues; to determine whether MutH...

Roles of RuvC and RecG in phage lambda red-mediated recombination (1999)

Poteete, Anthony R., Fenton, Anita C., Murphy, Kenan C.

The recombination properties of Escherichia coli strains expressing the red genes of bacteriophage lambda and lacking recBCD function either by mutation or by expression of lambda gam were examined....

Use of bacteriophage lambda recombination functions to promote gene replacement in Escherichia coli (1998)

Murphy, Kenan C.

Replacement of Escherichia coli's RecBCD function with phage lambda's Red function generates a strain whose chromosome recombines with short linear DNA fragments at a greatly elevated rate. The rate...

Biochemical characterization of P22 phage-modified Escherichia coli RecBCD enzyme (1994)

Murphy, Kenan C.

The biochemical properties of phage P22 Abc-modified RecBCD enzyme from Escherichia coli have been examined. RecBCD purified from a cell that expresses Abc (anti-RecBCD) contains all three RecBCD...

Properties of Escherichia coli expressing bacteriophage P22 Abc (anti-RecBCD) proteins, including inhibition of Chi activity (1993)

Murphy, Kenan C., Lewis, Laura J.

Escherichia coli strains bearing plasmids expressing phage P22 anti-RecBCD functions abc1 and abc2 were tested for the presence of recBC-like phenotypes. Abc2 induces moderate sensitivity to UV light...

Lambda Gam protein inhibits the helicase and chi-stimulated recombination activities of Escherichia coli RecBCD enzyme (1991)

Murphy, Kenan C.

The lambda Gam protein was isolated from cells containing a Gam-producing plasmid. The purified Gam protein was found to bind to RecBCD without displacing any of its subunits. Gam was shown to...

Modulation of Escherichia coli RecBCD activity by the bacteriophage lambda Gam and P22 Abc functions (1988)

Poteete, Anthony R., Fenton, Anita C., Murphy, Kenan C.

Plasmids that express the bacteriophage lambda gam gene or the P22 abc2 gene (with and without abc1) at controllable levels were placed in Escherichia coli and tested for effects on the activity of...

Roles of RuvC and RecG in Phage λ Red-Mediated Recombination

Poteete, Anthony R., Fenton, Anita C., Murphy, Kenan C.

The recombination properties of Escherichia coli strains expressing the red genes of bacteriophage λ and lacking recBCD function either by mutation or by expression of λ gam were examined. The...

Use of Bacteriophage λ Recombination Functions To Promote Gene Replacement in Escherichia coli

Murphy, Kenan C.

Replacement of Escherichia coli’s RecBCD function with phage λ’s Red function generates a strain whose chromosome recombines with short linear DNA fragments at a greatly elevated rate. The rate...

Roles of RuvC and RecG in Phage λ Red-Mediated Recombination

Poteete, Anthony R., Fenton, Anita C., Murphy, Kenan C.

The recombination properties of Escherichia coli strains expressing the red genes of bacteriophage λ and lacking recBCD function either by mutation or by expression of λ gam were examined. The...

Use of Bacteriophage λ Recombination Functions To Promote Gene Replacement in Escherichia coli

Murphy, Kenan C.

Replacement of Escherichia coli’s RecBCD function with phage λ’s Red function generates a strain whose chromosome recombines with short linear DNA fragments at a greatly elevated rate. The rate...

Dam Methyltransferase Is Required for Stable Lysogeny of the Shiga Toxin (Stx2)-Encoding Bacteriophage 933W of Enterohemorrhagic Escherichia coli O157:H7▿

Murphy, Kenan C., Ritchie, Jennifer M., Waldor, Matthew K., Løbner-Olesen, Anders, Marinus, M. G.

Shiga toxin 2 (Stx2), one of the principal virulence factors of enterohemorrhagic Escherichia coli, is encoded by 933W, a lambda-like prophage. 933W prophage induction contributes to Stx2 production,...