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Taxonomy: Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae;

Listeria

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Listeria monocytogenes

I. Organism Information

A. Taxonomy Information

1. Species

a. Listeria monocytogenes

i. Taxonomy ID: 1639

ii. Description:

Listeria monocytogenes is a low G+C, Gram-positive bacteria that is closely related to Bacillus, Clostridium, Enterococcus, Streptococcus, and Staphylococcus. L. monocytogenes are facultativly anaerobic, catalase-positive rods of 0.4 by 1 to 1.5 µm that do not form spores, have no capsule, and are motile at 10 to 25 degrees Celcius. They can cause serious, localized and generalized infections in humans and a variety of other vertebrates, including domesticated and wild birds and mammals. Listeria microorganisms were discovered in 1924, at Cambridge University by E.G.D. Murray, R.A. Webb, and M.B.R. Swann as the etiological agent of a septicemic disease affecting rabbits and guinea pigs (1).

iii. Variants

Listeria monocytogenes serotype 1/2a
Taxonomy ID: 169963

Listeria monocytogenes serotype 4b
Taxonomy ID: 265669

B. Lifecycle and Morphology

1. Intracellular:

The intracellular phase of the life cycle involves early escape from the phagocytic vacuole, rapid multiplication within the cytoplasm, bacterially induced actin-based motility, and direct spread to neighboring cells, in which the cycle is reinitiated. This shelters the spread of Listeriae from the humoral immune system (1).

To contribute a blurb on lifecycle, serotypes or handling the organism in healthcare or laboratory facilities, please contact help@nmpdr.org Your contribution will be credited with a byline.

a. Shape:

Regular, short rods with rounded ends, 0.4 μm by 1 - 1.5 μm. Some cells may be curved. Cells occur singly, or in short chains. Cells may be arranged at an angle to each other to give V-forms or in groups lying parallel along the long axis (2).

b. Picture:

SEM of Listeria monocytogenes

SEM image of Listeria in tissue by Elizabeth White, CDC

2. Environmental:


a. Picture:

SEM of Listeria monocytogenes biofilm

SEM image of Listeria after 2 days growth at 20° C on a stainless steel surface (size bar is 10 μm) by P. Chavant, M. Hébraud, B. Martinie, INRA, Theix

C. Genome Summary

1. Genome of Listeria monocytogenes 4b F2365

a. Chromosome

i. RefSeq Accession Number: NC_002973
ii. Size: 2,905,187 bp
iii. Serotype 4b (genomic division II) isolate from contaminated cheese that caused a lethal outbreak of listeriosis in 1985.

2. Genome of Listeria monocytogenes 1/2a EGD-e

a. Chromosome

i. RefSeq Accession Number: NC_003210


ii. Size: 2,944,528 bp
iii. Serotype 1/2a

3. Genome of Listeria monocytogenes 1/2a F6854

a. Chromosome

i. RefSeq Accession Number: NZ_AADQ00000000
ii. Size: 2,950,285 bp
iii. Serotype 1/2a

4. Genome of Listeria monocytogenes 4b H7858

a. Chromosome

i. RefSeq Accession Number: NZ_AADR00000000
ii. Size: 2,972,254 bp
iii. Serotype 4b



II. References

1.  Vazquez-Boland JA, Kuhn M, Berche P, Chakraborty T, Dominguez-Bernal G, Goebel W, Gonzalez-Zorn B, Wehland J, Kreft J. (2001) Listeria pathogenesis and molecular virulence determinants. Clin Microbiol Rev. 14(3):584-640.

2.  Bergey's Manual of Determinative Bacteriology, 9th edition. John G. Holt, Noel R. Krieg, Peter H.A. Sneath, James T. Staley, and Stanley T. Williams, editors. Baltimore: Williams and Wilkins, 1994, p.1235

3.   Mascola L, Lieb L., Chiu J, Fannin SL and Linnan MJ. (1988) Listeriosis: an uncommon opportunistic infection in patients with acquired immunodeficiency syndrome. A report of five cases and a review of the literature. Am. J. Med. 84: 162-164.

4. Todars Online Textbook of Bacteriology

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Listeria - Google News

©2010 Google

Recall on Moonstruck Camembert cheese - Canada.com


CBC.ca

Recall on Moonstruck Camembert cheese
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This recall is the result of a routine sampling program by the BCCDC, which revealed that one wheel of the finished product contained the Listeria ...
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Estrella Family Creamery Recalls Cheese for Listeria - Newsinferno.com


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Just prior, we wrote that the Estrella Family Creamery recalled its Red Darla cheese over contamination concerns with the Listeria monocytogenes pathogen. ...
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The patent covers the use of this antigen-adjuvant family of proteins alone or when delivered via a live, attenuated Listeria vaccine. ...

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Montesano creamery recalls some cheese - Seattle Times


Montesano creamery recalls some cheese
Seattle Times
The company says the cheese may be contaminated with Listeria monocytogenes. The Associated Press The Estrella Family Creamery of Montesano, Wash., ...
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Trading Markets (press release)
Advaxis is a biotechnology company developing proprietary, live, attenuated Listeria monocytogenes (Listeria) vaccines that deliver engineered tumor ...

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Kellogg's Warned Over Listeria in Eggo Plant - Food Safety News


InjuryBoard.com (blog)

Kellogg's Warned Over Listeria in Eggo Plant
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A new "Warning Letter" from the US Food and Drug Administration to the Kellogg's Company raises questions about whether the Listeria problem at its Atlanta ...
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Queseria Bendita Listeria-Contaminated Cheese Recall - Food Poison Journal


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The FDA announced yesterday a recall by Queseria Bendita of certain cheese products due to fears that the products are contaminated by Listeria ...
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USA pays price for food-borne illness: $152B a year - USA Today


Los Angeles Times

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Tips on keeping food uncontaminated - Monsters and Critics.com


Tips on keeping food uncontaminated
Monsters and Critics.com
Listeria monocytogenes, commonly called listeria, is a bacterium that can be harmful to health. Lothar Jaensch, head of the research group for proteomics at ...

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Listeria genome sequence annotation status: click numbers to browse lists of genes or subsystems

Strain annotated in NMPDR Serotype Genome size, bp Protein Encoding Genes (PEGs) Sort Named genes in subsystems Named genes not in subsystems Hypothetical genes in subsystems Hypothetical genes not in subsystems Subsystems RNAs
Listeria innocua Clip11262 6a 3,011,208 3,007 1418(45.6%) 925(29.7%) 76(2.4%) 691(22.2%) 324 133
Listeria monocytogenes 10403S 1/2a 2,866,709 2,873 1268(43.7%) 966(33.3%) 53(1.8%) 614(21.2%) 296 74
Listeria monocytogenes Aureli 1997 4b 3,006,068 3,221 1345(41.1%) 1091(33.3%) 56(1.7%) 780(23.8%) 291 101
Listeria monocytogenes EGD-e 1/2a 2,944,528 2,867 1426(46.7%) 972(31.8%) 66(2.2%) 589(19.3%) 326 134
Listeria monocytogenes F6900 1/2a 2,958,319 3,262 1426(43.3%) 1081(32.8%) 58(1.8%) 726(22.1%) 294 74
Listeria monocytogenes FSL J1-194 1/2b 2,986,227 3,692 1589(42.4%) 1245(33.2%) 74(2.0%) 839(22.4%) 293 101
Listeria monocytogenes FSL J2-071 4c 3,149,923 3,373 1357(39.7%) 1143(33.4%) 56(1.6%) 862(25.2%) 293 94
Listeria monocytogenes FSL N1-017 4b 2,857,865 3,704 1636(43.7%) 1216(32.5%) 64(1.7%) 831(22.2%) 291 88
Listeria monocytogenes FSL N3-165 1/2a1 2,886,689 2,882 1296(44.4%) 940(32.2%) 54(1.8%) 630(21.6%) 296 84
Listeria monocytogenes FSL R2-503 1/2b 3,001,696 4,767 2030(42.2%) 1689(35.1%) 79(1.6%) 1016(21.1%) 292 99
Listeria monocytogenes J0161 1/2a 3,051,828 3,181 1334(41.5%) 1064(33.1%) 56(1.7%) 757(23.6%) 298 74
Listeria monocytogenes J2818 1/2a 2,971,223 3,177 1382(42.9%) 1050(32.6%) 57(1.8%) 735(22.8%) 295 97
Listeria monocytogenes str. 1/2a F6854 1/2a 2,950,285 2,972 1441(47.6%) 892(29.4%) 66(2.2%) 631(20.8%) 323 132
Listeria monocytogenes str. 4b F2365 4b 2,905,310 2,856 1384(46.1%) 911(30.3%) 62(2.1%) 648(21.6%) 318 130
Listeria monocytogenes str. 4b H7858 4b 2,972,254 3,068 1405(45.5%) 915(29.6%) 67(2.2%) 700(22.7%) 319 118
Listeria welshimeri serovar 6b str. SLCC5334 6b 2,814,130 2,708 1196(42.8%) 940(33.7%) 48(1.7%) 609(21.8%) 295 152

Topic revision: r5 - 23 Aug 2008 - 11:07:32 - Bruce Parrello
 
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NMPDR is a collaboration among researchers from the Computation Institute of the University of Chicago, the Fellowship for Interpretation of Genomes (FIG), Argonne National Laboratory, and the National Center for Supercomputing Applications (NCSA) at the University of Illinois. NMPDR is funded by the National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, under Contract HHSN266200400042C. Banner images are copyright © Dennis Kunkel.