TWiM welcomes new host Petra, and explains how a small protein helps ensure that E. coli utilizes a preferred carbon source, and a screening strategy to identify inhibitors of the type IV secretion system that is essential for virulence of a variety of bacterial pathogens.

Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson, and Petra Levin

Right click to download TWiM #262 (57 MB .mp3, 70 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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Mark returns to TWiM to join in a discussion of soil microbiota as game-changers in restoration of degraded lands, and discovery of a centimeter-long bacterium, the biggest yet discovered.

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Guest: Mark O. Martin

Right click to download TWiM #261 (57 MB .mp3, 70 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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In this food-centric TWiM, we reveal the microbiomes of carnivorous vulture bees and of Gala apples from all over the world.

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Right click to download TWiM #260 (45 MB .mp3, 62 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv

Mark Martin returns to TWiM for a discussion of the frightening global burden of bacterial antibiotic resistance, and a solution to the problem of daylight nitrogen fixation in a cyanobacterium, despite the incompatibility of nitrogenase with oxygen produced during photosynthesis.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt

Guest: Mark O. Martin

Right click to download TWiM #259 (45 MB .mp3, 62 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM explains how bacterial symbionts regulate tick blood feeding activity, and the reasons why antibiotics exist.

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Right click to download TWiM #258 (45 MB .mp3, 61 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv

On this episode of TWiM, how phages prevent other phages from invading their hosts without blocking their own reproduction, and plastic-degrading potential of microbes across the Earth.

Hosts: Vincent Racaniello, Michele Swanson, and Michael Schmidt

Right click to download TWiM #257 (45 MB .mp3, 61 minutes)

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Links for this episode:

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv

TWiM discusses antigenic variation within dengue virus serotypes, and an mRNA vaccine that induces antibodies against tick proteins and prevents transmission of the Lyme disease agent.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt

Right click to download TWiM #256 (36 MB .mp3, 49 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

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TWiM reveals a study showing that positive interactions among bacteria are far more common than previously thought, and how acquisition of a single gene enabled Yersinia pestis to expand the range of mammalian hosts that sustain flea-borne plague.

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt

Right click to download TWiM #255 (36 MB .mp3, 49 minutes)

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Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv

Mark Martin returns to TWiM for a discussion of the observation that Gram’s stain does not cross the bacterial cytoplasmic membrane, and suppression of gingival inflammation and bone loss through host modulation caused by episymbiotic Saccharibacteria. 

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt

Guest: Mark O. Martin

Right click to download TWiM #254 (36 MB .mp3, 49 minutes)

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Links for this episode:

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv

Petra Levin joins TWiM to tell three stories from her laboratory: how starvation induces shrinkage of the bacterial cytoplasm; plasticity of E. coli cell wall and how it influences antibiotic resistance across different environments; and induction of antibiotic resistance by Triclosan. 

Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt

Guest: Petra Levin

Right click to download TWiM #253 (36 MB .mp3, 49 minutes)

Subscribe to TWiM (free) on iTunesGoogle PodcastsStitcherAndroidRSS, or by email.

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Links for this episode:

Music used on TWiM is composed and performed by Ronald Jenkees and used with permission.

Send your microbiology questions and comments to twim@microbe.tv