Posts by Wiep Klaas Smits (ExpBac/CMAT)
Genomic Analysis of Community-Associated C. difficile Infection Demonstrates Integration With National and International Strain Clusters and Limited Direct Transmission academic.oup.com/jid/article-...
New paper from us.
If you're interested in genetic manipulation of Clostridia, we have a few new tools for you! 36 new plasmids - all available from @addgene.bsky.social
www.microbiologyresearch.org/content/jour...
#microsky
Wonderful review: An update on Clostridioides difficile population structure and genomics | Clinical Microbiology Reviews journals.asm.org/doi/10.1128/... @thejoesorg.bsky.social
Our workflow is set-up for copper; in our hands au seems to behave quite different...
#cryosky crowd: for a project we are looking for Quantifoil R0.6/1 copper grids that are currently unavailable from the manufacturer. If anybody has any stock to spare, please let me know! #cryoEM
CenIR, an essential BlaIR-family regulatory system in C. difficile www.biorxiv.org/content/10.6...
Our paper is out today! See this news article on it. Asgard archea have some cool proteins. If you are interested in protein evolution it’s a really exciting space. I’m lucky to be a structural biologist in the age of DL🧬🧶 @brendanburns999.bsky.social @iduggin.bsky.social @debnathghosal.bsky.social
Second that for anaerobic cabinets; ours are named Ma Baker (Baker Ruskinn Concept 1000), Big Don (Whitley VA1000), Whitley Houston (Whitley A55 HEPA), Dr. Who (Whitley A35) and Turdis (Whitley A135GMP) :) all decided by lab nominations and popular vote
Big update for #gbdraw!
- Multi-record circular plots: Genomes with multiple replicons can now be displayed in a single view!
- Advanced linear plots: Focus on regions of interest with granular control over feature selection and color-coding!
Try now: gbdraw.app #microbiology #bioinformatics
A class of metallohydrolases expands bile salt hydrolase activity in the gut www.biorxiv.org/content/10.6...
Are you a #Cdiff researcher in Europe? Join us for the 3rd #3CdF meeting in Leiden, Netherlands on 4-5 June for an informal meeting to discuss latest research, network and meet colleagues!
event.fourwaves.com/3cdf-2026/
Processing of Reversed Replication Forks is Required for the Resolution of Replication-Transcription Conflicts www.biorxiv.org/content/10.6...
Full article: Genomic evolution and re-emergence of a multidrug-resistant Clostridioides difficile RT027 clone with reduced vancomycin susceptibility driving a prolonged hospital outbreak www.tandfonline.com/doi/10.1080/...
Binding of Bacillus subtilis dynamin‐like protein DynA to the bacterial membrane is essential for effective phage defense - Shafqat - 2026 - The FEBS Journal - Wiley Online Library febs.onlinelibrary.wiley.com/doi/full/10....
Am stoked and thrilled that our latest paper is now out. A longitudinal study of invasive E. coli from children in the Netherlands over 50 years
www.sciencedirect.com/science/arti...
Our recent work is now available in bioRXIV!
(bacterial) chromosome segregationists take note 👇
membrane-anchoring of the 𝘰𝘳𝘪𝘊 region to ensure proper daughter chromosome segregation after replication initiation – proposed decades ago but never substantiated... 👉now shown for 𝘚. 𝘢𝘶𝘳𝘦𝘶𝘴 by mariana pinho's lab
Dual activation of the cytoplasmic sensor ComR by XIP pheromone or aromatic amino acid catabolites in salivarius streptococci. Left: Classical activation of the ComRS system by XIP for intraspecies QS, leading to a coactivation of competence (DNA uptake) and predation (salvaricin production). Production of salivaricins takes place in a pulse mode due to a combined positive and negative feedback loop through ComS and the ComX-PepF relay (XIP degradation), respectively. Right: Pheromone-independent activation of ComR by aromatic amino acid catabolites for interspecies dysbiosis-sensing, leading only to the activation of predation. Production of salivaricins takes place in a continuous mode due to an absence of a negative feedback loop.
Microbial #dysbiosis alters chemical cues in the oral #microbiome, but how do commensals sense these? This study shows that #Streptococcus salivarius detects dysbiosis metabolites & repurposes a peptide #QuorumSensing receptor to drive antibacterial predation @plosbiology.org 🧪 plos.io/4rtVSbf
Bile acid dependent attenuation of toxin mediated disease is independent of colonization resistance against C. difficile www.biorxiv.org/content/10.6...
Very insightful!
🚨 New paper! Very excited to have been part of this collaborative work looking at the effect of antibiotics on the gut microbiota even years after prescription. Amazing effort led by Gabriel @tovefall.bsky.social and many others published today in Nature Medicine!
🔗 www.nature.com/articles/s41...
Why some #gut #microbes persist after #fecal #transplants ...
| #Bacteria | #microbiota | #MicroSky | #poop | By @kingscollegelondon.bsky.social via @sciencex.bsky.social
How can we tap into the enormous functional diversity of microbes on this planet?
Join us at EMBL Heidelberg (8–10 Dec 2026) to learn about ongoing efforts to decode gene function and organisation in human gut microbes, and present your science.
#Virus hiding inside #bacteria may help explain #colorectal #cancer ...
| #Bacteroides | #microbiome | #bacteriophages | #phage | Via @sciencex.bsky.social
This is so cool:
www.biorxiv.org/content/10.6...
Discovery of a Genetic Toxin-Antidote System in Vertebrates
hat tip to @asaflevylab.bsky.social
Paper 🚨: in this Narrative Review we describe the challenges and opportunity of a microbiome research facility, based on our experiences at LUMC with Center for Microbiome Analyses and Therapeutics (CMAT) www.sciencedirect.com/science/arti... #ESGHAMI @escmid.bsky.social @cmijournal.bsky.social
After >10 years of our lab studying bacterial cGAS-like enzymes, @hobbslabutah.bsky.social finally reconstitutes viral sensing in vitro and discovers how these ancient receptors sense phage protease enzymes to detect virion assembly and activate antiviral immunity
www.biorxiv.org/content/10.6...