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TWiM #18: Escherichia coli K-12, an emerging pathogen?

19 October 2011 by Vincent Racaniello

This Week in MicrobiologyHosts: Vincent Racaniello, Michael Schmidt, Stanley Maloy and Elio Schaechter.

On episode #18 of the podcast This Week in Microbiology, Vincent, Michael, Elio, and Stanley explain how to make the human intestinal commensal and benign laboratory bacterium Escherichia coli K-12 into an invasive organism, and the unearthing of century-old spores in New York City.

[powerpress url=”http://traffic.libsyn.com/twimshow/TWiM018.mp3″]

Click the arrow above to play, or right-click to download TWiM #18 (54 MB, .mp3, 74 minutes).

Subscribe to TWiM (free) on iTunes, Zune Marketplace, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

  • Conversion of E. coli K-12 to an invasive form (mBio)
  • Pedigree of E. coli K-12 (pdf)
  • The facade of E. coli K-12 (Small Things Considered)
  • Unearthing of century old bacteria in NYC (ABC News)
  • Bacteria in 30,000 year old salt crystals (Geology)
  • Old bacteria in ice
  • Old, small, cold… (Small Things Considered)
  • IP6 mediated autoprocessing of bacterial toxins (PloS Path)
  • Letters read on TWiM #18

Send your microbiology questions and comments (email or mp3 file) to twim@microbe.tv, or call them in to 908-312-0760. You can also post articles that you would like us to discuss at microbeworld.org and tag them with twim.

Filed Under: This Week in Microbiology Tagged With: bacterium, benign, coli, commensal, ecoli, escherichia, human, intestinal, invasive, k-12, laboratory, microbe, microbiology, new york, organism, spores

TWiM 7 – Cycles of life and death, light and dark

19 May 2011 by Vincent Racaniello

cyanobacteriaHosts: Vincent Racaniello, Margaret McFall-Ngai, Cliff Mintz, Elio Schaecter, and Michael Schmidt.

On episode #7 of the podcast This Week in Microbiology, Vincent, Cliff, Elio, Margaret, and Michael discuss programmed cell death in E. coli, and the daily synthesis and degradation of enzymes needed for photosynthesis and nitrogen fixation by cyanobacteria.

[powerpress url=”http://traffic.libsyn.com/twimshow/TWiM007.mp3″]

Click the arrow above to play, or right click to download TWiM #7 (44.5 MB, .mp3, 64 minutes).

Subscribe to TWiM (free) on iTunes, Zune Marketplace, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Image of Cyanobacteria in Lake Littoistenjärvi by Stefe via flickr

Links for this episode:

  • E. coli extracelluar death factor EDF
  • mRNA cleavage by MazF toxin
  • Myxococcus programmed cell death
  • Using toxins in antimicrobial bacteriophage
  • Death as an option (Small Things Considered)
  • Cycling of metalloenzyme inventories in Crocosphaera watsonii (PNAS)
  • Growing a green future (Small Things Considered)
  • Letters read on TWiM #7

Send your microbiology questions and comments (email or mp3 file) to twim@microbe.tv, or call them in to 908-312-0760. You can also post articles that you would like us to discuss at microbeworld.org and tag them with twim.

Filed Under: This Week in Microbiology Tagged With: bacteria, crocosphaera, cyanobacteria, ecoli, extracellular death factor, microbe, nitrogen fixation, nitrogenase, photosynthesis, programmed cell death, toxin-antitoxin

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by Vincent Racaniello

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