This Week in Microbiology

• 330: More mouth Microbiology

  TWiM explains how to recode E. coli so it uses only one stop codon, and an exploration of the mechanisms of bacterial adhesion within dental plaque. Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode Engineering E. coli with one stop codon (Nature) Bacterial adhesion in dental plaque (mBio) Microbial complexes in subgingival plaque (J Clin Periodontol) Bacterial clusters in periodontal and peri-implant diseases (Microorg) Take the TWiM Listener survey! Send your microbiology questions and comments (email or recorded audio) to [email protected]

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• 329: Bacteria Hunt With Grappling Hooks

  TWiM explains Pasteur’s relentless hunt for microbes in the air, and how bacteria hunt for prey by ixotrophy - using grappling hooks! Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode Pasteur’s hunt for microbes in the air (NYTimes) Bacterial predation by ixotrophy (Science) Enter the pirates (STC) Take the TWiM Listener survey! Send your microbiology questions and comments (email or recorded audio) to [email protected]

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• 328: Capturing Shigella With Filopodia

  TWiM describes Shigella infection is facilitated by interaction of human enteric α-defensin 5 with a colonic epithelial receptor, and an amino acid change in RNA polymerase that leads to resistance to β-lactams by preventing dysregulation of amino acid and nucleotide metabolism Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Android, RSS, or by email. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode National Black HIV/AIDS awareness day (CDC) Shigella infection and human enteric alpha-defensin 5 (Nature Microbio) RNA polymerase amino acid change and resistance to beta-lactams (Cell Rep) Take the TWiM Listener survey! Send your microbiology questions and comments (email or recorded audio) to [email protected]

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• 327: Freezing and Anti-Freezing With Bacteria

  TWiM explains the remarkable abilities of bacterial ice nucleating proteins to promote freezing of water, and cryoprotective proteins produced by worm microbiomes that prevent freezing. Hosts: Vincent Racaniello, Michael Schmidt, Petra Levin and Michele Swanson. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode Worm microbiomes produce crytoprotective proteins (Sci Adv) Biological antifreeze in Antarctic fishes (Sciece) Enhancement of bacterial ice nucleators (PNAS) Take the TWiM Listener survey! Send your microbiology questions and comments (email or recorded audio) to [email protected]

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• 326: I Have One Word For You: PETase!

  TWiM explores the discovery of microbial enzymes, PETases, that can degrade ubiquitous plastics, and how exogenous peptidoglycan is a danger signal to trigger biofilm formation. Hosts: Vincent Racaniello, Michael Schmidt, Michele Swanson. Guest Mark O. Martin. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Android, RSS, or by email. Become a patron of TWiM. Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Links for this episode Discovery of PET depolymerases (Science) Exogenous peptidoglycan triggers biofilm formation (Nat Micro) What is a biofilm? (Vimeo) Peptidoglycan as a PAMP/MAMP (Immunol Rev) Light organ formation triggered by peptidoglycan (Science) Take the TWiM Listener survey! Send your microbiology questions and comments (email or recorded audio) to [email protected]

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