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Applied and Environmental Microbiology, October 2007, p. 6313-6316, Vol. 73, No. 19
0099-2240/07/$08.00+0     doi:10.1128/AEM.00473-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Absence of Serotype-Specific Surface Antigen in Laboratory Variants of Epidemic-Associated Listeria monocytogenes Strains{triangledown}

Ying Cheng, Lili Yue,{dagger} Driss Elhanafi,{ddagger} and S. Kathariou*

North Carolina State University, Department of Food Science, Raleigh, North Carolina 27695

Received 1 March 2007/ Accepted 15 May 2007

Variants that lacked reactivity with the serotype 4b-specific monoclonal antibody c74.22 and that lost susceptibility to certain Listeria- or serotype 4b-specific phages were identified in the course of genetic studies with serotype 4b Listeria monocytogenes strains H7550 and F2381L (epidemic clones I and II, respectively). Our findings suggest that such variants can become inadvertently established under laboratory conditions and suggest caution in work involving serotype 4b strains and genetic constructs thereof.

* Corresponding author. Mailing address: North Carolina State University, Department of Food Science, Campus Box 2764, Raleigh, NC 27695-2764. Phone: (919) 513-2075. Fax: (919) 513-0014. E-mail: sophia_kathariou{at}ncsu.edu

{triangledown} Published ahead of print on 3 August 2007.

{dagger} Present address: Dermatology Research, Veterans Affairs Medical Center, San Francisco, CA 94121.

{ddagger} Present address: North Carolina State University, Biomanufacturing Training and Education Center, Raleigh, NC.

Applied and Environmental Microbiology, October 2007, p. 6313-6316, Vol. 73, No. 19
0099-2240/07/$08.00+0     doi:10.1128/AEM.00473-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Spears, P. A., Suyemoto, M. M., Palermo, A. M., Horton, J. R., Hamrick, T. S., Havell, E. A., Orndorff, P. E. (2008). A Listeria monocytogenes Mutant Defective in Bacteriophage Attachment Is Attenuated in Orally Inoculated Mice and Impaired in Enterocyte Intracellular Growth. Infect. Immun. 76: 4046-4054 [Abstract] [Full Text]  
  • Cheng, Y., Promadej, N., Kim, J.-W., Kathariou, S. (2008). Teichoic Acid Glycosylation Mediated by gtcA Is Required for Phage Adsorption and Susceptibility of Listeria monocytogenes Serotype 4b. Appl. Environ. Microbiol. 74: 1653-1655 [Abstract] [Full Text]  


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