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Yves Brun lab

@brunlabcaulo.bsky.social
1.9K followers 907 following 142 posts

We like to look at bacteria do the things they do. Université de Montréal.

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Reposted by Yves Brun lab
Alex Merz 🇺🇸🇨🇦🇺🇦 @merz.bsky.social · 31/08/2026
@brunlabcaulo.bsky.social @gcrox.bsky.social @alisoncrissuva.bsky.social l @dr-lori-burrows.bsky.social @abaumler.bsky.social @stcmicrobeblog.bsky.social
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Yves Brun lab @brunlabcaulo.bsky.social · 14/06/2026
Evening. Slainte!
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Yves Brun lab @brunlabcaulo.bsky.social · 12/06/2026
Great collaboration with @weisslab.bsky.social to measure Caulobacter adhesion!
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Reposted by Yves Brun lab
Luiz Pedro Carvalho, PhD @luizcarvalholab.bsky.social · 25/03/2026
All currently approved antibiotics inhibit essential cellular processes. Ever wonder if we could kill bacteria using the opposite strategy? Here, we demonstrate an alternative antibacterial strategy: lethality through pathway over-activation. www.nature.com/articles/s41... (1 out of 3)
nature.com
Activation of l-histidine biosynthesis as a new antibiotic strategy against Mycobacterium tuberculosis - Nature Communications
Here, the authors report metabolic activation as a potential antimicrobial strategy against Mycobacterium tuberculosis. They show that supra-physiological activation of L-histidine biosynthesis r...
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Reposted by Yves Brun lab
Shuaiqi Guo @guo-lab.bsky.social · 25/03/2026
Our work with the Brun lab on the in situ architecture of the Caulobacter crescentus Tad pilus machine is published in mBio. Amazing collaborative effort led by James Iarocci @jamesiarocci.bsky.social
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Yves Brun lab @brunlabcaulo.bsky.social · 25/03/2026
Our paper on the in situ structure of the Tad pili machine is now published in mBio journals.asm.org/eprint/D9AT2... #microsky
journals.asm.org
In situ architecture of the Tad pilus machine in Caulobacter crescentus | mBio
Investigating the Tad pilus nanomachine in a genetically tractable, non-pathogenic organism like Caulobacter crescentus provides a powerful model for elucidating the architecture and functional dynamics of this widespread system. Insights gained from studying the Tad machinery can improve our understanding of related Tad pilus systems in pathogenic bacteria such as Aggregatibacter actinomycetemcomitans, where Tad pili are a key determinant of biofilm formation and chronic infection. Additionally, the remarkable functional diversity of Tad systems, ranging from surface sensing in C. crescentus to bacterial predation in Myxococcus xanthus, highlights their broad biological relevance. By revealing the in situ architecture of the Tad pilus biosynthetic machinery, this study advances our understanding of a major class of bacterial nanomachines and may thus provide structural insights that could inform the development of new therapeutic strategies targeting pilus-mediated virulence.
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Reposted by Yves Brun lab
George O'Toole (he/him/his) @geiselbiofilm.bsky.social · 20/03/2026
New in JB: Mike Cashel is known internationally for his work on "magic spot", or (p)ppGpp, that serves as a key regulator of bacteria physiology. Hinman & Gottesman remember Dr. Cashel. journals.asm.org/doi/10.1128/... @asm.org #JBacteriol
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Reposted by Yves Brun lab
Fusion Conferences @fusionconf.bsky.social · 16/03/2026
ANNOUNCEMENT! Programme now LIVE on our website for the #ProkaryoticCellBio conference! Check it out here, a reminder that the registration deadline is 13 April!➡️https://bit.ly/4rEH9KP
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Reposted by Yves Brun lab
Aritz Roa-Eguiara @aritz-roa.bsky.social · 07/03/2026
🚨Preprint! Happy to share the research from my PhD “Genome delivery of a contractile tailed phage and its superinfection exclusion mechanism”. We use cryoEM to study the genome ejection of the phage T4, revealing how the tape measure protein regulates the process. www.biorxiv.org/content/10.6...
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Reposted by Yves Brun lab
BejaLabTechnion @bejalab.bsky.social · 04/03/2026
A jumbo cyanophage encodes the most complete ribosomal protein set in the known virosphere www.biorxiv.org/content/10.1...
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Yves Brun lab @brunlabcaulo.bsky.social · 26/02/2026
🧵 Proud to present a tour de force by postdoc @gregbwhitfield.bsky.social solving the mystery of how bacterial Tad pili can extend and retract with a single motor ATPase. Great collaboration with Lynne Howell, @dr-lori-burrows.bsky.social, @ianyyen.bsky.social www.biorxiv.org/content/10.6...
biorxiv.org
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Yves Brun lab @brunlabcaulo.bsky.social · 26/02/2026
This is a tour de force by @gregbwhitfield.bsky.social who I just convinced to join Bluesky.
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Yves Brun lab @brunlabcaulo.bsky.social · 26/02/2026
Maybe a single image is worth a thousand thread words:
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Yves Brun lab @brunlabcaulo.bsky.social · 26/02/2026
Working on a 🧵 Bacterial Tad pili extend and retract pili using a single motor ATPase with a unidirectional catalytic mechanism. We find that the Tad motor achieves bidirectionality by physical inversion; alternating which face of the ATPase toroid engages the IM platform complex. #microsky
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Yves Brun lab @brunlabcaulo.bsky.social · 18/02/2026
Thank you for highlighting our paper on how septal PG hydrolysis licenses a second wave of PG transpeptidation during cell separation! www.nature.com/articles/s41.... I will do a thread when the page set version is out.
nature.com
Cell wall hydrolysis promotes a second wave of transpeptidation to achieve cell separation following septation in Bacillus subtilis - Nature Communications
Cell division in many Gram-positive bacteria involves the synthesis of a peptidoglycan septum that is then hydrolyzed to facilitate cell separation. Here the authors show that, after septum formation,...
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Reposted by Yves Brun lab
Fusion Conferences @fusionconf.bsky.social · 10/02/2026
The demand for #ProkaryoticCellBio so far has been crazy! We received a record number of abstract & grant submissions, to which the conference chairs are busy reviewing! We predict poster slots & accommodation to begin filling up, don't wait until the deadline to register! More info ➡️ bit.ly/4raYCu
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Yves Brun lab @brunlabcaulo.bsky.social · 09/02/2026
Giving a seminar in Bucharest in a few minutes. #microsky
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Reposted by Yves Brun lab
Erin Goley @goleylab.bsky.social · 02/02/2026
Hey alpha aficionados - it's almost time for CauloCon 2026! This free, virtual meeting will feature talks from @brunlabcaulo.bsky.social @thanbichlerlab.bsky.social and @lamasonlab.bsky.social with opps for trainee talks. Register using the link below. 👇
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Yves Brun lab @brunlabcaulo.bsky.social · 24/01/2026
It’s warming up in Montreal 🥶☃️
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Yves Brun lab @brunlabcaulo.bsky.social · 22/01/2026
Very excited to be part of the amazing Gr-ADI Consortium to accelerate the discovery of new antibiotics. #microsky nouvelles.umontreal.ca/en/article/2...
nouvelles.umontreal.ca
Major funding for the discovery of new antibiotics
A research team co-led by UdeM's Yves Brun has received a US$3.8-million grant from the Gates Foundation to develop drugs to fight Gram-negative bacteria.
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Yves Brun lab @brunlabcaulo.bsky.social · 14/01/2026
Looking forward to having Dr. Xiaoquian (Annie) Yu join us in Montreal!
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Reposted by Yves Brun lab
Nature Microbiology @natmicrobiol.nature.com · 09/01/2026
New Microbe Matters! @relenski.bsky.social traces the legacy of Escherichia coli and how science is evolving to use this model organism in new ways #microsky www.nature.com/articles/s41...
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Reposted by Yves Brun lab
STCmicrobeblog @stcmicrobeblog.bsky.social · 11/01/2026
you may be interested to learn what Elio had to say in 2008 about an experiment he was involved in five decades earlier... #MicroSky smallthingsconsidered.blog/schaechter/2...
smallthingsconsidered.blog
A Most Per­sonal Note
by Elio — At the June General Meeting of the ASM in Boston, there was a session called 'From Bacterial Physiology to Cellular Genetics: Reflections on the 50th Anniversary of Schaechter, Maaløe, a…
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Reposted by Yves Brun lab
STCmicrobeblog @stcmicrobeblog.bsky.social · 09/01/2026
we are busy tidying up our archives during the winter holidays. we've now worked our way back to 2008, making some 1.800+ posts available again: smallthingsconsidered.blog/page/300/
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Reposted by Yves Brun lab
Martin Thanbichler @thanbichlerlab.bsky.social · 09/01/2026
Ancestral sequence reconstruction reveals CTP-dependent loading of the bacterial centromere-binding protein ParB as an ancient evolutionary feature Now published: tinyurl.com/4ddhwbb3 Thanks to the Hochberg and Bange labs for the great collaboration!
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Reposted by Yves Brun lab
Fusion Conferences @fusionconf.bsky.social · 08/01/2026
Just 4 days until our Grants, Early Bird & Talk deadline closes for #ProkaryoticCellBio! Join Heath Murray, Jie Xiao, Marc Bramkamp and Ethan Garner 13 - 16 July 2026 in Portugal, alongside our fantastic speaker line-up! More info on how to register here➡️https://bit.ly/4qCDhtw
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Yves Brun lab @brunlabcaulo.bsky.social · 08/01/2026
Please repost. #microsky
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Yves Brun lab @brunlabcaulo.bsky.social · 08/01/2026
Canada Research Chairs www.canada.ca/en/impact-pl...: $1M/year for 8 years, plus up to $6M in CFI infrastructure support. Looking for leading researchers abroad interested in AMR research, antibiotic discovery (Pandemicstopai.ca), phages. Email short vision + CV. Tight deadlines: March 10 & June 15
canada.ca
Canada Impact+ Research Chairs - Canada.ca
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Reposted by Yves Brun lab
Yves Brun lab @brunlabcaulo.bsky.social · 22/12/2025
We just launched the web site for our consortium to accelerate antibiotic discovery by combining high throughput, high content approaches and AI, PandemicStop-AI. Check it out: pandemicstopai.ca
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Yves Brun lab @brunlabcaulo.bsky.social · 22/12/2025
We just launched the web site for our consortium to accelerate antibiotic discovery by combining high throughput, high content approaches and AI, PandemicStop-AI. Check it out: pandemicstopai.ca
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Reposted by Yves Brun lab
Fusion Conferences @fusionconf.bsky.social · 16/12/2025
We are looking forward to sunnier days and some fantastic presentations at our #ProkaryoticCellBio meeting in Portugal next July! Grants, Early Bird pricing and Talk slots close on 12 Jan, register & submit today to join us! 🌞 👉https://bit.ly/48G29dP
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Yves Brun lab @brunlabcaulo.bsky.social · 14/12/2025
#working
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Yves Brun lab @brunlabcaulo.bsky.social · 09/12/2025
A study in contrast this morning. Frost, smog, and beach.
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Yves Brun lab @brunlabcaulo.bsky.social · 20/11/2025
Wow, really cool work! Congratulations!
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Yves Brun lab @brunlabcaulo.bsky.social · 11/11/2025
Not funny!
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Yves Brun lab @brunlabcaulo.bsky.social · 08/11/2025
As mentioned, here is the preprint by Jensen and @viollierpat.bsky.social on the in situ structure of the Tad pilus. www.biorxiv.org/content/10.1.... Nice work and great to see that we are seeing the same thing! Our preprint: www.biorxiv.org/content/10.1... #microsky
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Reposted by Yves Brun lab
Shuaiqi Guo @guo-lab.bsky.social · 06/11/2025
Great collaboration with @brunlabcaulo.bsky.social for resolving the Tad pilus machine structure by cryo-ET. Beautiful work by graduate students James Iarocci and Ryu Williston in our lab. Preprint:https://www.biorxiv.org/content/10.1101/2025.11.05.686773v1
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Yves Brun lab @brunlabcaulo.bsky.social · 06/11/2025
More useful with the link #microsky www.biorxiv.org/content/10.1...
biorxiv.org
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Yves Brun lab @brunlabcaulo.bsky.social · 06/11/2025
Great collaboration with @guo-lab.bsky.social to determine an in situ architectural model of the Tad pilus machine. Be on the lookout soon for a preprint on the same topic by Grant Jensen and @viollierpat.bsky.social. #microsky
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Yves Brun lab @brunlabcaulo.bsky.social · 31/10/2025
Forgot to post the recently published version of this paper on the role of a minor pilin-like protein in surface sensing journals.asm.org/doi/10.1128/...
journals.asm.org
Stimulation of the Caulobacter crescentus surface sensing pathway by deletion of a specialized minor pilin-like gene | mBio
Surface sensing allows bacteria to colonize surfaces and form biofilms, with wide-ranging implications for bacterial survival, ecology, and human health. In Caulobacter crescentus, tight adherence (Ta...
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Yves Brun lab @brunlabcaulo.bsky.social · 19/09/2025
Light reading to distract me from the news. Yet it is strangely familiar.
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Yves Brun lab @brunlabcaulo.bsky.social · 15/07/2025
Why do we always submit grant proposals at the last minute? This never ceases to amaze me.
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Yves Brun lab @brunlabcaulo.bsky.social · 09/07/2025
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Yves Brun lab @brunlabcaulo.bsky.social · 09/07/2025
Please repost: PhD position with my lab and @weisslab.bsky.social in a great collaboration on bacterial adhesion #microsky. See drive.google.com/file/d/1GJD4...
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Yves Brun lab @brunlabcaulo.bsky.social · 05/07/2025
As I was saying, happy to be back home! Cheers!
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Yves Brun lab @brunlabcaulo.bsky.social · 04/07/2025
Congratulations Marie! Immensely proud! Looking forward to seeing where you take your project on evolution of bacterial elongation.
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Yves Brun lab @brunlabcaulo.bsky.social · 04/07/2025
Sabbatical is over! I really enjoyed my time in Marseille for 10 months @lcbofficiel.bsky.social but very happy to be back in Montreal and with my lab. Also, the view from my office 😀
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Yves Brun lab @brunlabcaulo.bsky.social · 04/07/2025
Excited to see our automated HT growth/microscopy screening platform coming together. Pictured: the intermediate version to screen 5-10,000/day unattended. Diagrammed is the full platform due next summer after renovations @ 20,000/day and integrated with our colony picker.
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Reposted by Yves Brun lab
Marie Delaby @mariedelaby.bsky.social · 18/06/2025
Exciting news! My work with Liu Yang in the @brunlabcaulo.bsky.social, “Phenotypic plasticity in cell elongation among closely related bacterial species”, has been selected as an Editors’ Highlight in @natcomms.nature.com under Microbiology and infectious diseases! Check it out here:
nature.com
Editors' Highlights | Nature Communications
Editors' Highlights
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Yves Brun lab @brunlabcaulo.bsky.social · 02/06/2025
How does your favorite species elongate? 🧵 "Phenotypic plasticity in bacterial elongation among closely related species". Happy to see this paper in print @natcomms.nature.com. Nice work by @mariedelaby.bsky.social, Liu Yang et al. See original 🧵, different colours, same data and conclusions.
nature.com
Phenotypic plasticity in cell elongation among closely related bacterial species
Nature Communications - Multiple types of cell elongation have been described in bacteria, but little is known about how these strategies vary across species. Here, the authors use fluorescent...
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