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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

TWiM #2 – The plague, microbial virulence, and the gut microbiome

9 March 2011 by Vincent Racaniello

gut microbiomeOn episode #2 of This Week in Microbiology, Vincent, Cliff, and Michael review a fatal laboratory acquired Yersinia pestis infection, and how gut bacteria control body weight and metabolic activity..

[powerpress url=”http://traffic.libsyn.com/twimshow/TWiM002.mp3″]

Click the arrow above to play, or right-click to download TWiM #2 (52 MB .mp3, 75 minutes).

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

Links for this episode:

  • Fatal laboratory acquired Yersinia infection (thanks, Alan!)
  • Hemochromatosis
  • Gut bacteria can control metabolic functions (mBio)
  • Systems biology approach to infectious disease research (mBio)
  • Dr. B. Brett Finlay’s 3D animations
  • Letters read on TWiM #2

Send your microbiology questions and comments (email or mp3 file) to twim@microbe.tv or leave voicemail at 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, bacteriology, gut microbiome, microbiology, plague, prokaryote, yersinia

TWiV 110: CSI virology

5 December 2010 by Vincent Racaniello

Alan DoveHosts: Vincent Racaniello, Dickson Despommier, Alan Dove, and Rich Condit

On episode #110 of the podcast This Week in Virology, Vincent, Alan, Rich, and Dickson discuss bacteria that can utilize arsenic in place of phosphorus, the passing of Frank Fenner, polio outbreak in The Congo, solving criminal cases of HIV transmission, and classifying viruses by capsid structure.

[powerpress url=”http://traffic.libsyn.com/twiv/TWiV110.mp3″]

Click the arrow above to play, or right-click to download TWiV #110 (68 MB .mp3, 93 minutes).

Subscribe to TWiV (free) in iTunes , at the Zune Marketplace, by the RSS feed, or by email, or listen on your mobile device with Stitcher Radio.

Links for this episode:

  • Bacteria that utilize arsenic (Ed Yong’s view)
  • Frank Fenner passes away
  • Smallpox and its eradication – the ‘red book’ (pdf)
  • Polio outbreak in The Congo (virus isolation)
  • Solving criminal cases with HIV evolution (press release)
  • Definition of paraphyly
  • Order to the viral universe
  • International Committee on Taxonomy of Viruses (ICTV)
  • TWiV on Facebook
  • Letters read on TWiV 110

Weekly Science Picks

Dickson – CDC’s West Nile virus case count for 2010
Rich –
The red bees of Red Hook
Alan – Arsenic-based life at XKCD
Vincent –
PLoS iPad app

Send your virology questions and comments (email or mp3 file) to twiv@microbe.tv or leave voicemail at Skype: twivpodcast. You can also post articles that you would like us to discuss at microbeworld.org and tag them with twiv.

Filed Under: This Week in Virology Tagged With: arsenic, bacteria, capsid, congo, frank fenner, HIV, ICTV, mono lake, OPV, paraphyly, polio, poxvirus, taxonomy, TWiV, viral, virology, virus

TWiV 99: ICAAC Boston 2010

19 September 2010 by Vincent Racaniello

Host: Vincent Racaniello

Vincent tours the 50th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) in Boston, speaking with exhibitors and visitors, including Professors Derek Smith, Michael Schmidt, Frederick Hayden, and Myra McClure.

Many thanks to Chris Condayan and Ray Ortega of the American Society for Microbiology for recording and editing this episode.

[powerpress url=”http://traffic.libsyn.com/twiv/TWiV099.mp3″]

Click the arrow above to play, or right-click to download TWiV #99 (45 MB .mp3, 62 minutes)

Subscribe to TWiV (free) in iTunes , at the Zune Marketplace, by the RSS feed, or by email, or listen on your mobile device with Stitcher Radio.

Links for this episode:

  • 50th ICAAC
  • ICAAC daily press conference videos (including Prof. Myra McClure)
  • Antigenic cartography
  • Antimicrobial properties of copper
  • Video of this episode – download .mp4 (1.99 GB) or .wmv (935 MB) or view below

Send your virology questions and comments (email or mp3 file) to twiv@microbe.tv or leave voicemail at Skype: twivpodcast. You can also post articles that you would like us to discuss at microbeworld.org and tag them with twiv.

Filed Under: This Week in Virology Tagged With: antigenic cartography, antigenic drift, antiviral, bacteria, CFS, chronic fatigue syndrome, conference, copper, icaac, influenza, pandemic, podcast, racaniello, relenza, swine flu, tamiflu, TWiV, viral, virology, virus, xmrv

TWiV 72: Bucket of bolts

7 March 2010 by Vincent Racaniello

Hosts: Vincent Racaniello, Dickson Despommier, Alan Dove, and Rich Condit

This week the TWiV team explains CRISPR/Cas, the immune system of bacteria and archaea, how novel viruses are discovered by deep sequencing of small RNAs, and the relationship between dry weather and outbreaks of West Nile virus infection.

This episode is sponsored by Data Robotics Inc. Use the promotion code VINCENT to receive $50 off a Drobo or $100 off a Drobo S.

Win a free Drobo S! Contest rules here.

[powerpress url=”http://traffic.libsyn.com/twiv/TWiV072.mp3″]

Click the arrow above to play, or right-click to download TWiV #72 (62 MB .mp3, 85 minutes)

Subscribe to TWiV (free) in iTunes , at the Zune Marketplace, by the RSS feed, or by email.

Links for this episode:

  • Review on the CRISPR/cas system of bacteria and archaea
  • Virus discovery by sequencing small virus-derived RNAs (paper one and two)
  • Dry weather induces outbreaks of West Nile virus infection (paper and comment form)
  • Vaccine needle size matters
  • Participate in the Personal Genome Project

Weekly Science Picks

Dickson Scientist as Chef by Dickson Despommier (pdf)
Alan Networked Organisms and Habitats (NOAH) iPhone app
Rich Never Cry Wolf by Farley Mowat
Vincent The Dish

Send your virology questions and comments (email or mp3 file) to twiv@microbe.tv or leave voicemail at Skype: twivpodcast. You can also post articles that you would like us to discuss at microbeworld.org and tag them with twiv.

Filed Under: This Week in Virology Tagged With: archaea, bacteria, crispr, genome, immune system, podcast, rnai, TWiV, viral, virology, virus, West Nile virus

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by Vincent Racaniello

Earth’s virology Professor
Questions? virology@virology.ws

With David Tuller and
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