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Posts by Katy Poncin

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We are excited to be recruiting into 3 Associate Professorship's in @oxfordbiochemistry.bsky.social. Come join us as a colleague and benefit from our vibrant and multidisciplinary environment. Reach out to me if you have any questions. Please repost! (tinyurl.com/48deybuu) (tinyurl.com/4pdvjaft).

1 month ago 107 125 1 4
EMBO starts search for its next Director – Features – EMBO The process to appoint the next EMBO Director is underway. The incoming Director will take office in February 2028, succeeding Fiona Watt, who has led the organization since January 2022

Interested in one of the top jobs in European biology?

@embo.org has opened a call for its next Director, to succeed Fiona Watt

Really spectacular opportunity! Spread the word...

www.embo.org/features/emb...

1 month ago 31 44 2 0
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Quand la peste a décimé la population mondiale, la biodiversité a, paradoxalement, elle aussi chuté En analysant des archives polliniques, des chercheurs montrent que l’abandon des terres agricoles a fait reculer la diversité des plantes pendant plus d’un siècle.

"... pus de 2 000 ans d’augmentation de la biodiversité en Europe ont été générés grâce aux humains –et non malgré eux. Mais pourquoi ?
Contrairemt à aujourd'hui – où les monocultures dominent – les systèmes agricoles mixtes étaient la norme pendant la majeure partie des 2 000 dernières années

1 month ago 69 31 2 2

Autoriser (9) in French (to allow)

1 month ago 2 0 1 0
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Postdoctoral researcher in molecular and cellular bacteriology - ERC CoG VAMPIRE The research group of Prof Géraldine Laloux at the de Duve Institute (UCLouvain) is looking for a highly motivated postdoc to elucidate the molecular factors underlying bacterial prey-predator interac...

#MicroSky Please RT
@erc.europa.eu-funded postdoc position in my lab to identify the molecular basis of prey-predator interactions using our favorite micro-vampire Bdellovibrio exovorus as a model.
Let's find what the bite is made of! 🧛
Flexible start date.
Info: euraxess.ec.europa.eu/jobs/415877

1 month ago 19 25 0 1
Un dessin vaut mieux... (vidéo n°517)
Un dessin vaut mieux... (vidéo n°517) YouTube video by Julien Bobroff

Un des dessins et une des découvertes les plus importantes de la physique !!! Et je vous montre l'original.

Merci à l'Academie des sciences pour leur accueil.
youtube.com/shorts/X0Egx...

3 months ago 50 9 2 0
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mScarlet3-H (aka mYongHong) is on the cover of Nature Methods! All plasmids are available for free from WeKwikGene wekwikgene.wllsb.edu.cn/publications...

10 months ago 33 16 1 1

Any effect on bacteria ???

1 year ago 0 0 0 0

Exciting times for protein science! 🧪

1 year ago 84 12 2 0
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Are there any bacterial pathogens specific to sharks ?

1 year ago 4 0 0 0

I have worked with gonorrhoea before. It is very hard to handle and considered a fastidious organism. The expertise needed is real and those people indeed cannot be replaced easily.

1 year ago 0 0 0 0

Same. They stopped even considering applying to US labs.

1 year ago 3 0 0 0

Great ! Cool that it is a lasso peptide !

1 year ago 2 0 0 0
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Salmonella effector kinase SteC is activated by host-mediated phosphorylation The pathogen Salmonella , which causes significant human morbidity and mortality, encodes an effector kinase, SteC, which mediates actin polymerisation and cell migration. Given the minimal nature of ...

New preprint on how a minimal Salmonella kinase needs a host kinase to activate it. Work led by @timeshpillay.bsky.social and another great collaboration with @katrinrittinger.bsky.social @crick.ac.uk biorxiv.org/content/10.1...

1 year ago 12 6 0 0
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The History of Chemistry Chemistry is everywhere, and involves everything. But how did chemistry get to be what it is? I'm Steve Cohen, a chemist and writer, bringing you The History of Chemistry. This podcast explores the de...

Head's up: Are you NOT a scientist? Then my podcast is for you. Are you a scientist? Then my podcast IS for you too. History of chemistry 🧪 is not taught to chemists, whether undergrad or grad. (I also appreciate support to keep going through my Patreon page.) thehistoryofchemistry.buzzsprout.com

1 year ago 39 12 0 0
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🔥📢Didier #Raoult a déposé PLAINTE CONTRE MOI
et il le fait peut-être...sur vos impôts.
J'ai gagné, intégralement relaxé: www.lexpress.fr/sciences-san...
Mais il insiste et a fait appel. Je relance donc cet appel aux dons pour ma défense: pots.lydia.me/collect/3898...
Partagez, appelez à partager...🔽

1 year ago 149 73 8 1

If you don’t have an incubator, “simply” wait for late spring/summer time. You need a higher temperature in your room. 😉

1 year ago 1 0 1 0
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Ideally at least 28 degrees Celsius (37 is the usual)… and constant if possible. Ok in the dark. Avoid touching the whole area of the plate too, so you can see the difference when it starts growing.

1 year ago 1 0 1 0
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Trump halts medical research funding in apparent violation of judge’s order Health department orders NIH to hold Federal Register submissions – critical step in process for funding studies

Trump officials are trying to sneak around federal judges’ orders.

They could be held in civil contempt of court, which can include jail time and can’t be undone with a presidential pardon, according to @sbagen.bsky.social .

My latest for @theguardian.com

www.theguardian.com/us-news/2025...

1 year ago 429 192 15 19
Top: Organisation of the nap island in Neisseria gonorrhoeae FA1090. Grey arrows, flanking genes (NEIS0808, pseudouridine synthase; NEIS0794, histidyl-tRNA synthase); blue arrows, genes coding for GG-containing peptides; orange arrows, genes predicted to be involved in peptide processing and secretion; green arrow, gene of unknown function; pink boxes, Correia elements. Bottom: Transmission electron microscopy images from bacteria in HEPES (T = 75 min). Some wild-type bacteria appear normal (indicated with arrow numbered 1), with many others having a dense (arrow 2) or very dense (arrow 3) cytoplasm, periplasmic expansions (arrow 4), or appearing as ghost cells (arrow 5). Extracellular vesicles (arrow 6) and released cellular content (arrow 7) are also visible. Periplasmic expansions are not observable in the ΔltgA or ΔnapRABC strains. Cytoplasm condensation appears more homogenous in the ΔltgA mutant.

Top: Organisation of the nap island in Neisseria gonorrhoeae FA1090. Grey arrows, flanking genes (NEIS0808, pseudouridine synthase; NEIS0794, histidyl-tRNA synthase); blue arrows, genes coding for GG-containing peptides; orange arrows, genes predicted to be involved in peptide processing and secretion; green arrow, gene of unknown function; pink boxes, Correia elements. Bottom: Transmission electron microscopy images from bacteria in HEPES (T = 75 min). Some wild-type bacteria appear normal (indicated with arrow numbered 1), with many others having a dense (arrow 2) or very dense (arrow 3) cytoplasm, periplasmic expansions (arrow 4), or appearing as ghost cells (arrow 5). Extracellular vesicles (arrow 6) and released cellular content (arrow 7) are also visible. Periplasmic expansions are not observable in the ΔltgA or ΔnapRABC strains. Cytoplasm condensation appears more homogenous in the ΔltgA mutant.

Programmed cell death distinguishes N. gonorrhoeae & N. meningitidis from other #Neisseria species. @katyponcin.bsky.social &co identify a horizontally acquired genetic island encoding peptides that drive #autolysis & human cell lysis, aiding colonization & disease 🧪 @plosbiology.org plos.io/4aP2om9

1 year ago 10 3 0 0
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Convergent Evolution of the Antimycobacterial Lasso Peptide Triculamin Triculamin is a ribosomally synthesized and post-translationally modified peptide (RiPP) lasso peptide with potent antimycobacterial activity, produced by an unusual, non-canonical biosynthetic gene c...

A Christmas present to all of the lasso peptide connoisseurs out there. The next chapter in our work is on triculamin is ready on bioRxiv. Great work by two incredibly talented graduate students @amerrild.bsky.social and @tizianasvenningsen.bsky.social.
www.biorxiv.org/content/10.1...

1 year ago 21 11 2 0
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🚨🚨🚨
Call is now open!!! Deadline approaching...
Wanna become our new beloved colleague and be part of a stimulating (and friendly) scientific community ??? We are perfectly located in beautiful Paris with exciting work environment and state-of-the-art core facilities
APPLY 👇👇👇👇👇

1 year ago 18 28 0 1

Amazing work !!!

1 year ago 0 0 0 0
DNA Break Repair by Homologous Recombination (2024) Drew Berry wehi.tv
DNA Break Repair by Homologous Recombination (2024) Drew Berry wehi.tv YouTube video by WEHImovies

Delighted to publish my new molecular animation:

DNA Break Repair by Homologous Recombination

youtu.be/Xe-83tBcxhs

1 year ago 273 114 38 41
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Why I have resigned from the Royal Society The Royal Society is a venerable institution founded in 1660, whose original members included such eminent men as Christopher Wren, Robert H...

For those who missed it: Elon Musk, the Royal Society, and me
deevybee.blogspot.com/2024/11/why-...

1 year ago 938 325 34 34

We've already hit 100 followers! Thanks to everyone who has followed us so far. Spread the word :)

1 year ago 22 16 1 3
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Attention, cascade réalisée sur X, n'essayez pas de la reproduire chez vous, c'est pour les professionnels. Des journalistes n'en ont plus rien à faire des faits, et l'on devrait débattre sur la rotondité de la Terre....
Attention, parole subversive "La Terre n'est pas plate!"

1 year ago 2961 536 368 90
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PhD studentship: Staphylococcus aureus interactions in cystic fibrosis polymicrobial infections at Newcastle University on FindAPhD.com PhD Project - PhD studentship: Staphylococcus aureus interactions in cystic fibrosis polymicrobial infections at Newcastle University, listed on FindAPhD.com

Funded PhD available in my lab. Pls repost! www.findaphd.com/phds/project...

1 year ago 58 99 0 1

Looks good ! SOS-related gene ?

1 year ago 1 0 0 0
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Role of a TonB-dependent receptor and an oxygenase in iron-dependent copper resistance in Caulobacter crescentus https://www.biorxiv.org/content/10.1101/2024.11.25.625226v1 Copper (Cu) is potentially threatening for living organisms owing to its toxicity at high concentrat

Role of a TonB-dependent receptor and an oxygenase in iron-dependent copper resistance in Caulobacter crescentus www.biorxiv.org/content/10.1101/2024.11....

1 year ago 4 3 0 1