Erwan Gueguen
@macerwan.bsky.social
260 followers 200 following 22 posts
Molecular microbiology assistant-professor at University of Lyon. I tweet only about Science here. I work on Pectobacteriaceae. I don't like bacteria that can't be genetically manipulated. Lab website: https://sites.google.com/view/mtsb
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Reposted by Erwan Gueguen
cnrsbiologie.bsky.social
#ResultatScientifique🔎| Des scientifiques ont révélé comment le plasmide pOXA-48 rend les bactéries ultra-résistantes aux antibiotiques 🦠
🤝 @cnrs.fr @mmsb-lyon.bsky.social @cnrs-rhoneauvergne.bsky.social
✍️ @sbigot.bsky.social
📕 @natcomms.nature.com | buff.ly/u3Cy4Db
Reposted by Erwan Gueguen
carlbergstrom.com
1. Kevin Gross and I just posted a new science-of-science preprint.

This one explores the looming peer review crisis. As many of you know, it's becoming significantly more difficult for journal editors to find scholars willing to serve as peer reviewers for submitted manuscripts.
Will anyone review this paper? Screening, sorting, and the feedback cycles that imperil peer review
Scholarly publishing relies on peer review to identify the best science. Yet finding willing and qualified reviewers to evaluate manuscripts has become an increasingly challenging task, possibly even ...
arxiv.org
Reposted by Erwan Gueguen
msftresearch.bsky.social
Today in the journal Science: BioEmu from Microsoft Research AI for Science. This generative deep learning method emulates protein equilibrium ensembles – key for understanding protein function at scale. www.science.org/doi/10.1126/...
Reposted by Erwan Gueguen
cnrsecologie.bsky.social
@cnrsecologie.bsky.social regrette profondément l'adoption de cette loi à la vision court-termiste & ses conséquences graves sur l’environnement, qui méprise santé & bien-être de la population & le rôle des espèces sauvages dans la prod. agricole. La communauté scientifique n'a pas été entendue.
afp.com
Le Parlement a définitivement adopté mardi la proposition de loi agricole Duplomb-Menonville, comprenant entre autres une mesure décriée de réintroduction sous conditions d'un pesticide néonicotinoïde, et présentée comme une réponse à la colère agricole de 2024.
Reposted by Erwan Gueguen
asm.org
ASM @asm.org · Jun 12
Researchers uncover a new class of retropepsin-like proteases in P. aeruginosa that are required for biofilm formation & bacterial survival under stress conditions, including antibiotic exposure, making them appealing therapeutic targets. #mBio: asm.social/2sq
Phenotypic characterization of RloA protease mutants in Pseudomonas aeruginosa. (A) Biofilm formation in PA14 wild type and ∆rloA1-3 mutants was assessed through crystal violet staining of overnight cultures grown in 0.4% Arginine M63 media (top). Graph shows the normalized average intensity of crystal violet staining (OD550) relative to the growth of the corresponding bacterial culture (OD600), n = 4. Error bars show standard deviation. (B) PA14 wild-type and ∆rloA1-3 mutant colonies were grown in Congo red 0.2% glucose M63 agar. Scale bar represents 2 mm. (C) Ampicillin ETEST strips tested on lawns of PA14 wild-type and ∆rloA1-3 mutant strains grown on Mueller-Hinton agar. Graph shows the average minimal inhibitory concentration (MIC) from triplicate experiments. Error bars show standard deviation. (D) Scanning electron micrographs of PA14 wild-type (top) and ∆rloA1-3 mutant cells (bottom). Scale bar represents 4 µm.
Reposted by Erwan Gueguen
wamsleylab.bsky.social
Where is the money going? In the case of for-profit publishers it's very clear:

Your open access fees fund corporate profit margins.

Profit margins for large academic publishers can far exceed those of household names like Amazon and Apple.

chart source: bit.ly/4leULKi
#scipub #academicsky
Chart shows profit margin for Elsevier is 38%, for Springer-Nature is 27%... this is in comparison to companies like Apple (25%), Amazon (5%)... There are non-publishing companies like Microsoft with big margins (34%), but overall the chart shows that academic publishing companies have surprisingly large profits when compared to more "famous" large companies that are household names. "Source" line says "yahoo finance, RELX investor presentations, Spring Nature Annual Reports
macerwan.bsky.social
I am delighted to be taking part in the 8th meeting on RNA regulation in bacteria and archaea, to be held in Strasbourg from September 1-4.

This is my first time, and I'm really looking forward to meeting the experts on this topic.

microbialrnameeting.com

#MicrobialRNAs
Microbes & RNA 2025 – 8th Meeting on Regulating with RNA in Bacteria and Archaea
microbialrnameeting.com
Reposted by Erwan Gueguen
natureportfolio.nature.com
A paper in Nature presents an AI model that can outperform existing Earth system forecasts. The model, named Aurora, could enable more accurate and efficient forecasting of air quality, tropical cyclone paths, and ocean wave dynamics, as well as high-resolution weather forecasting. 🌊 ⚒️ 🧪
A foundation model for the Earth system - Nature
Aurora, a new large-scale foundation model trained on more than one million hours of diverse geophysical data, outperforms operational forecasts in predicting air quality, ocean wave dynamics, tropical cyclone tracks and high-resolution weather.
go.nature.com
macerwan.bsky.social
🎓 Looking for a postdoc with a background in bacteriology to join my team to study pectinolytic bacteria via a #MSCA fellowship 🇪🇺 (up to 3 yrs in France).
📅 Expression of interest by June 15. The MSCA application deadline is September 10, 2025.
🔗 Info in attached files
#Pectobacteriaceae
Reposted by Erwan Gueguen
mmsb-lyon.bsky.social
Le MMSB propose une mobilité NOEMI
Rejoignez l'équipe "Ecologie et Évolution Moléculaire des Phages" qui travaille sur les éléments génétiques mobiles et l'immunité bactérienne. Profil Génétique bactérienne, Écologie microbienne et Evolution expérimentale
🤝Contactez-nous pour rejoindre notre unité!
MMSB – Molecular Microbiology and Structural Biochemistry
mmsb.cnrs.fr
Reposted by Erwan Gueguen
dbikard.bsky.social
The US is literally losing its mind... killing valuable research programs, and more seriously, damaging what makes US science so strong: it's attractiveness for the best minds in the world.
baym.lol
Yesterday, the NIH R35 “Outstanding Investigator” grant to fund scientists in my lab studying antibiotic resistance was terminated for reasons not related to the content of the science, or any actions taken by me or members of my lab
A screenshot of the termination notice showing "Outstanding Investigator Grants" A screenshot of the termination notice with "This award is terminated effective the date of this award, due to unsafe antisemitic actions that suggest the institution lacks concern for the safety and wellbeing of Jewish students." highlighted
Reposted by Erwan Gueguen
Reposted by Erwan Gueguen
joachimgoedhart.bsky.social
SimpleViz: A User-Friendly, Web-Based Tool for Publication-Ready Data Visualization in Bioinformatics
www.sciencedirect.com/science/arti...
Fig. 1. Schematic diagrams that explain SimpleViz, web-based tool charting box/violin/dot plot, volcano plot, PCA plot, and heatmap.
macerwan.bsky.social
This isn’t new in history. The Soviet Union had Lysenko — a man whose pseudoscience thrived because it pleased power. The damage lasted generations. We should know better.
3/3
macerwan.bsky.social
It’s not just budget cuts or institutional neglect. It’s a deliberate effort to reshape science around ideological goals. 2/3
Reposted by Erwan Gueguen
celineloot.bsky.social
At least 10% of the V. cholerae integron cassettes have novel antiphage activities (see below). Considering that there are 25,000 distinct cassettes of unknown function, integrons constitute an extraordinary and almost inexhaustible reservoir of antiphage functions!
Sedentary chromosomal integrons as biobanks of bacterial antiphage defense systems
Integrons are genetic systems that drive bacterial adaptation by acquiring, expressing, and shuffling gene cassettes. While mobile integrons are well known for spreading antibiotic resistance genes, t...
www.science.org
macerwan.bsky.social
Bravo Céline ! Super découverte !