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Christian Baumann

@cjbaumann.bsky.social
594 followers 706 following 17 posts

Postdoc in the Fasshauer lab at the University of Lausanne. Computational biology, protein evolution, membrane proteins & NMR. SP-Mitglied.

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Reposted by Christian Baumann
Janani Durairaj (Jay) @ninjani.bsky.social · 16/09/2026
The PhD and Postdoc application links are now live! Come join me at UNIL to work on deep learning for protein structure, interactions & design. pickybinders.org#open-positions
career5.successfactors.eu
Career Opportunities: PhD student position in deep learning for enzyme structure & catalysis (22980)
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Philipp Markolin @philippmarkolin.eurosky.social · 30/07/2026
Given the recent COVID-19 origins revival and Fauci witchhunt, just a reminder that I have written a book that answers to the best of our knowledge the question; and dismantles the many disinformation campaigns around the various lab leak narratives. Free access: open.substack.com/pub/protagon...
open.substack.com
Lab Leak Fever
The COVID-19 Origin Theory that Sabotaged Science and Society
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Janani Durairaj (Jay) @ninjani.bsky.social · 28/08/2026
Some exciting news: I'm joining the University of Lausanne @unil.bsky.social @dbc-unil.bsky.social as an Assistant Professor next month 🎉 My group will work on context-aware deep learning for protein structure, interaction & design. Postdoc and PhD openings coming soon - keep an eye out!
compare, predict, design
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Philipp Markolin @philippmarkolin.eurosky.social · 22/08/2026
"For the first time, the American state has obtained a criminal conviction against a scientist for defending the truth about the origins of the COVID-19 pandemic." A scientific paper the regime did not like is now prosecutable bunder Trump´s weaponized Department of Justice. Dark times. Injustice.
The prosecution of Morens is the reactionary outcome of years of an anti-science campaign spearheaded by the Trump administration and fascist Republicans, such as Senator Rand Paul, sustained with Democratic votes at every stage, and whose object is to beat the scientific community into silence.

The charges are a complete fraud. The “crime” supposedly committed by Morens was to route emails through a personal account. That is the whole of it. But the Justice Department’s announcement states that this was somehow part of a conspiracy to “counter the narrative that COVID-19 leaked from a lab.” The official act named in the accompanying bribery count is a scientific paper, a commentary Morens wrote arguing that SARS-CoV-2, the virus that causes COVID-19, had natural origins. The government has written a scientific conclusion into a criminal indictment and called it corruption.
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Christian Baumann @cjbaumann.bsky.social · 16/08/2026
🤣
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perbullough.bsky.social @perbullough.bsky.social · 11/08/2026
This looks like step 1 to Trump's annexation of Greenland. It's a region I have visited twice- it is an extremely remote and pristine wilderness, too fragile for this kind of operation. A blatant attack on Greenland's and Denmark's national sovereignty. www.techtimes.com/articles/323...
techtimes.com
Greenland Energy Told Investors Permits Were On Track: Government Source Said Otherwise
Greenland Energy oil drilling in Jameson Land is blocked for 2026: Greenland’s mineral official confirmed the Trump-linked NASDAQ firm cannot receive permits before November 8, past the logistics wind...
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The Liberal BoJack @thelibbojack.bsky.social · 07/08/2026
Denmark just passed a law that every person owns a copyright to their own face, voice, and body. In the age of AI, this places more legal control in a person's hands, and there are real, large consequences and fines for breaking this law. We need to make this worldwide. Use: interactink.vercel.app
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Abdou Rachid Thiam @abdourachidthiam.bsky.social · 05/08/2026
A long-standing mystery in cholesterol biology: why is ER cholesterol sensing so switch-like rather than gradual? Our answer: cholesteryl ester phase separation in the ER membrane, which converts small lipid changes into a cooperative transcriptional response. www.biorxiv.org/content/10.6...
biorxiv.org
ER cholesteryl ester phase separation underlies switch-like cholesterol sensing
Cellular lipid homeostasis requires mechanisms that detect subtle changes in lipid abundance and trigger rapid, coordinated responses. The INSIG/SCAP/SREBP2 pathway provides a central feedback system ...
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Dr Keith Wilson 💭 @keithwilson.eu · 28/07/2026
My favourite conclusion to a #philosophy paper, by Bill Lycan:
13.10. Conclusions
I can draw hardly any. My main thesis remains, that it is hard to see what could establish a claim as to what vision does or does not represent. Another thing that remains is the possibility that the question is a bad one. All this, I fear, is grist to the mill of the skeptics who deny that vision represents in the first place. I probably should not have written this chapter.
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André Nadler @nadlerlab.bsky.social · 29/07/2026
Lipids build the membranes of all cells, but identifying their precise functions is extremely challenging. Here’s our attempt to change that: How to find and understand lipid-protein interactions, by Katelyn Cook & company. www.biorxiv.org/content/10.6...
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Alan @gammacounter.bsky.social · 06/07/2026
6 years of research: "The only trait that consistently predicted objections to remote work was narcissism—the tendency to be self-centered & entitled. The higher the opinions of themselves leaders expressed, the more they coveted power and status—& the more they favored return-to-office mandates."
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Edward T Eng @edwardteng.bsky.social · 25/06/2026
What if learning structural biology felt more like playing a game? Meowtabolism aims to make the structural sciences more interactive, accessible & fun. If you have educational applications let Muyuan (or me) know. store.steampowered.com/app/4045010/... #CryoEM #ScienceOutreach #STEMEducation
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Harmit Singh Malik @harmitmalik.bsky.social · 24/06/2026
I know it seems like a heretical idea, but one way to figure out if a preprint is really interesting (to you) is... to read the preprint. Then, in the spirit of sharing, send a note to authors: a simple kudos or a more detailed question. I do this a dozen times a year. It's awesome. Try it.
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Alastair Baker @alastairbaker1.bsky.social · 13/06/2026
Its my turn to post the meme
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Vanni Lab at UNIFR, Switzerland @labvanni.bsky.social · 12/06/2026
This amazing work by @danialv.bsky.social and Bodan Hu is now out in peer-reviewed form at @cp-cell.bsky.social with a lot of new simulations! Check it out if interested in lipid transport!
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Fabio Lolicato @fabiololicato.com · 12/06/2026
As part of @sfb1638.bsky.social in 𝐌𝐞𝐦𝐛𝐫𝐚𝐧𝐞 𝐑𝐞𝐦𝐨𝐝𝐞𝐥𝐢𝐧𝐠, we are committed to developing computational tools that make complex membrane simulations more accessible, reproducible, and scalable for the scientific community. Today, we are happy to share the public release of 𝐎𝐩𝐞𝐧𝐌𝐞𝐦𝐛𝐫𝐚𝐧𝐞𝐁𝐮𝐢𝐥𝐝𝐞𝐫 v1.2.1
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Josh Habgood-Coote @impractknow.bsky.social · 09/06/2026
Philosophy question: I need a memorable name for the following metric: how many propositions need to be known by individuals (crucially: including double counting propositions!) for a group to know something
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Christian Baumann @cjbaumann.bsky.social · 09/06/2026
The updated SNARE database from the Fasshauer lab is finally online! It contains about 19,000 SNARE sequences from nearly 1,200 species: tracey.unil.ch www.biorxiv.org/content/10.6...
biorxiv.org
TRACEY: an updated resource for SNARE protein domain annotation with improved HMMs and expanded sequence coverage
Motivation: SNARE proteins catalyse membrane fusion across the eukaryotic endomembrane system, from synaptic vesicle exocytosis to intracellular trafficking, endosomal and vacuolar transport, and auto...
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corrylab.bsky.social @corrylab.bsky.social · 27/05/2026
Excited to share this paper from @yiechanglin.bsky.social showing how lipids can move between bacterial membranes along the bridge like protein TamB. Also happy to be able to post the cool movie. 🎥🌟 #MDsimulations #StructuralBiology doi.org/10.1016/j.bp...
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chemistry.unwrapped @chemistryunwrapped.bsky.social · 26/05/2026
🧪 Can we take caffeine out without killing the flavor? ☕ Decaf might be the perfect drink when we want to avoid a racing heart ❤️⚡, but decaffeination is far more sophisticated than it sounds. @chem.uzh.ch @michaljuricek.bsky.social @juriceklab.bsky.social #CoffeeScience #CaffeineFree
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Hetan Shah @hetanshah.bsky.social · 09/05/2026
This 1952 memo from the Pentagon UFO files is superb There is no point preparing for aliens ‘because no one of consequence is going to take this rubbish seriously unless it happens. At that point, our policy will be determined in the traditional manner of grand panic.’ 🤣 www.war.gov/medialink/uf...
There likely is nothing to be done at the moment to prepare for these possibilities (the only body of writing on the subject available in an emergency is science fiction), because no one of consequence is going to take this rubbish seriously unless it happens. At that point, our policy will be determined in the traditional manner of grand panic.

Maxwell W. Hunter, II
Member, Professional Staff
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Fran Bottanelli @franbottanelli.bsky.social · 04/05/2026
#membrane seminars are back this week with @javierespadas.bsky.social from the @rouxlab.bsky.social and Chris Burd from @yalecellbiology.bsky.social! Looking forward to seeing everyone online!
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Zebrafish Rock! @zebrafishrock.bsky.social · 03/05/2026
First 22 hours of zebrafish development. Credit to @zebrafish007.bsky.social at #WeinsteinLab. #ZebrafishZunday 🧪
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Helena Watson @helenawatson.bsky.social · 25/04/2026
Preprint 🧵! I’m really excited to introduce BIGSMALL, an interleaved multi-magnification cryo-ET scheme bridging molecular and cellular scales in a single acquisition! BIGSMALL = 𝐁road 𝐈nformation 𝐆athering 𝐒trategy by 𝐌ultiscale 𝐀cquisition of lame𝐋𝐋a www.biorxiv.org/content/10.6... (1/6)
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Evgenii Protasov @evgenii-protasov.bsky.social · 12/04/2026
One more Asgard archaeon! Meet Nerearchaeum marumarumayae from the microbial mats of Shark Bay, Australia. It interacts with #bacteria via intercellular nanotubes 🧬! #microbiology #archaea #eukaryotes #MicroSky #ArchaeaSky @currentbiology.bsky.social www.cell.com/current-biol...
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 09/04/2026
😱 is this a new record ?? via @steveroyle.bsky.social
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Wei Chen @weichen2.bsky.social · 27/03/2026
Excited to share our new paper! It was a really enjoyable collaboration with the Keating Lab. onlinelibrary.wiley.com/doi/full/10.... We asked a simple question: Do all crowded environments affect protein phase separation the same way? Short answer: no.
onlinelibrary.wiley.com
Residue‐level mapping of crowding effects on protein phase separation
Protein liquid–liquid phase separation has emerged as a key mechanism in cellular organization. While the crowded environment inside cells is expected to influence this process, how crowding shapes t...
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Christian Baumann @cjbaumann.bsky.social · 25/03/2026
Excited to share our new preprint on how membranes shape SNARE TMDs! www.biorxiv.org/content/10.6...
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Jeremy Baskin @jeremybaskin.bsky.social · 18/03/2026
I've been leading a big project at Methods in Enzymology over the past year or so: editing three back-to-back-to-back volumes of articles describing the latest advances in methods for studying lipids and membranes — thank you to the 50 #lipidtime luminaries who contributed the 51 chapters! Details 👇
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Philip Rößler @roesslph.bsky.social · 10/03/2026
Now out! Methods for isotope labeling in mammalian cells for NMR studies of difficult-to-produce proteins onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Human cells for human proteins: Isotope labeling in mammalian cells in suspension for functional NMR studies
In biological and biomedical research, the focus progressively moves towards difficult human proteins, which often can only be expressed in higher eukaryotic cells. Nuclear magnetic resonance (NMR) c...
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parafilm is cool dot com @parafilmm.bsky.social · 07/03/2026
Spirals are everywhere in nature!
A 3 by 2 collection of images showing various natural spirals. The bottom middle one shows a roll of Parafilm with the side of the roll visible
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Carl Zimmer @carlzimmer.com · 18/02/2026
Scientists have seen Asgard archaea crawling for the first time. When it comes to the origin of eukaryotes, this is like seeing a feathered dinosaur in the wild. (Video courtesy of Philipp Ralder)
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Alex Merz 🇺🇸🇨🇦🇺🇦 @merz.bsky.social · 06/02/2026
As Fran was nice enough to highlight this, I thought I'd put up a brief thread. 3 in 10 proteins that our cells make are either embedded in membranes (ion channels, adhesion molecules, etc.) or secreted (insulin, antibodies). They move through the secretory pathway. 1/
simple diagram of the secretory pathway.
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Lorraine Reese @lorraine-reese.bsky.social · 06/02/2026
Still time to submit an abstract or save £50 on the full fees for this great Membrane Proteins Conference! Taking place 7–9 April 2026 in Birmingham, don’t miss the chance to listen to expert researchers discussing membrane proteins in diverse biological processes. #Proteins🧪 ow.ly/rhHJ50XNBLI
Image advertising Scientific Meeting: Membrane Proteins Conference, Leonardo Royal Hotel, Birmingham UK, 7-9 April 2026. Earlybird deadline 7 February 2026. Includes a photo of people networking at a conference.
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 28/01/2026
Let's try this #AcademicSky 1 fav, 1 funny, strange, or unexpected scientific anecdote about a paper, a scientist, a fact, hoping that some will be new to you.
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Cédric Wermuth @cedricwermuth.bsky.social · 21/01/2026
Holy shit. Bin nur ich das oder ist das selbst für trumpsche Standards ein neuer Tiefpunkt absurden, zusammenhanglosen, faktenfreien Gebrabbels? #wef #trump
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Mark A. Hanson @hansonmark.bsky.social · 13/01/2026
We've got ISSUES. Literally. We scraped >100k special issues & over 1 million articles to bring you a PISS-poor paper. We quantify just how many excess papers are published by guest editors abusing special issues to boost their CVs. How bad is it & what can we do? arxiv.org/abs/2601.07563 A 🧵 1/n
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 13/11/2025
Helical charge distribution at the transmembrane-luminal interface determines subcellular localization www.biorxiv.org/content/10.1101/202…
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Biochemical Society @biochemsoc.bsky.social · 26/11/2025
Save £100 if you book your place for Membrane Proteins Conference before 7 January 2026. Taking place on 7–9 April 2026 in Birmingham, don’t miss the chance to listen to expert researchers discussing membrane proteins in diverse biological processes. 🧪 buff.ly/sybIVz4
Scientific Meeting Membrane Proteins Conference Leonardo Royal Hotel, Birmingham, UK 7-9 April 2026 Abstract submissions now open Super Earlybird Deadline: 7 January 2026
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Arjun Raj @arjunraj.bsky.social · 30/12/2025
Blog post: Just quit Quitting projects in science is hard, but we should be doing a lot more of it. open.substack.com/pub/arjunraj...
open.substack.com
Just quit
Quitting projects in science is hard, but we should be doing a lot more of it.
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Sudipta Mondal @sudipta-cryoet.bsky.social · 29/10/2025
Do #lipids carry the signatures of #evolution?🤔 In #Biochemistry Perspective, We 'provocatively' (as my former PhD guide & scientific guru Sankar put it ) propose an expanded view of the classic “lipid divide” idea feedback/critiques all welcome 🙌 #lipidtime pubs.acs.org/doi/10.1021/...
pubs.acs.org
An Integrative View on Multiple “Lipid Divide” Events as Hallmarks of Distinct Evolutionary Transitions
Lipids are fundamental to life, serving not only as membrane components but also as key players in signaling, energy storage, and cellular identity. While the well-known “lipid divide” between Bacteri...
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Coskun Lipid Cellar @ ZML Dresden @lipid.bsky.social · 15/12/2025
Ups we did it again! Please mark your calender. EMBO Workshop “Lipid Code to Life”, taking place September 7–11, 2026, in Dresden, organized by Maria Fedorova, @lipid.bsky.social, Valerie O'Donnell, @holthuislab.bsky.social and @molcellbiophys-lab.bsky.social 🥳 Retweets = lipidlove
copyright Palina Nepachalovich of ZML Dresden
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 11/12/2025
wait, wait, what ???? aixiv.science
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Reese Richardson @reeserichardson.bsky.social · 05/12/2025
The Scientifc Reports autism cycle article has been retracted: doi.org/10.1038/s415...
AI generated figure about autism
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Flint Dibble @flintdibble.bsky.social · 02/12/2025
LIVESTREAM in half an hour about the new ancient DNA study published last week that changes our timeline for ancient cats. Should be a fun dive into the archaeology of cats www.youtube.com/watch?v=9byO...
youtube.com
We Were WRONG About Ancient Cats – New DNA Study Changes Everything! #OldeNews
YouTube video by Archaeology with Flint Dibble
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Javier Espadas @javierespadas.bsky.social · 01/12/2025
New preprint from the lab!!🎉 We show that Asgard archaea ESCRT-III proteins can trigger membrane fission and reveal its molecular mechanism, offering clues to how these cells may have built internal compartments. But do these organisms even have these compartments? www.biorxiv.org/content/10.1...
biorxiv.org
Molecular basis for cellular compartmentalization by an ancient membrane fission mechanism
The emergence of cell compartmentalization depends on membrane fission to create the endomembrane compartments. In eukaryotes, membrane fission is commonly executed by ESCRT-III, a protein complex con...
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Elisabeth Bik @elisabethbik.bsky.social · 29/11/2025
I will be giving several talks this coming week at universities in Switzerland: Lausanne, Neuchâtel, Basel, and Bern. Hope to see some of you there!
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 26/11/2025
What do you think? Real SDS-PAGE gel or AI-generated ?
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