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Sebastian Falk

@sebastianfalk.bsky.social
1.1K followers 1.1K following 14 posts

🏳️‍🌈 Assoc. Prof @Max Perutz Labs Vienna, Biochemist & Structural Biologist, #RNA & #protein, Tennis addict, 🐈❤️,all time skeptic 🤨

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Reposted by Sebastian Falk
Maya Voichek @mayavoichek.bsky.social · 24/09/2026
Super excited to share my postdoctoral work at @imbavienna.bsky.social @viennabiocenter.bsky.social - We discovered that some retrotransposons, or "jumping genes" 🧬, are able to spread from cell to cell via a new viral infectivity route. A short thread: 🧵👇 (1/7)
AI-generated illustration of the soma-to-germline transmission of retrotransposons described in our work
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Pim Huis in 't Veld @huis.bsky.social · 09/09/2026
Fresh preprint from the lab: CIP2A tetramerization is required for mitotic DNA repair. A fantastic collaboration with @marcelvanvugt.bsky.social. By @laurendehaan.bsky.social, @rebeccaschneeweiss.bsky.social, and colleagues from Groningen, Vienna, Leiden, and Amsterdam 🙌 doi.org/10.64898/202...
Electron micrograph of full-length human CIP2A and a corresponding Alphafold model
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Sebastian Falk @sebastianfalk.bsky.social · 08/09/2026
Proud to see this preprint from @virginiabusetto.bsky.social out today — she's uncovered how a pseudohelicase-centered complex couples RNA cleavage to poly(UG)ylation. Beautiful mechanistic work from the lab, go check out the thread! 🧵
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Sebastian Falk @sebastianfalk.bsky.social · 03/09/2026
Great work. It shows again how interesting the evolution of small rna systems is.
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Reposted by Sebastian Falk
Max Perutz Labs Vienna @maxperutzlabs.ac.at · 03/08/2026
👀 Keep cutting-edge RNA research running behind the scenes! The @sebastianfalk.bsky.social lab is looking for a Research Technician/Lab Manager to support research on the molecular machines that process RNA using structural biology, biochemistry, and biophysics ➡️ tinyurl.com/nrjj6bvt
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Tomas Pachano @tomaspachano.bsky.social · 30/06/2026
I am thrilled to share our paper out in @cp-cell.bsky.social : "Systematic Discovery of Pathogen Effector Functions across Human Pathogens and Pathways." (1/4) www.cell.com/cell/fulltex...
cell.com
Systematic discovery of pathogen effector functions across human pathogens and pathways
The eORFeome, a large-scale collection of open reading frames encoding viral proteins and secreted bacterial and parasite effectors, enables functional genomics across diverse pathways and pathogens. ...
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Reposted by Sebastian Falk
Max Perutz Labs Vienna @maxperutzlabs.ac.at · 08/04/2026
🔬 Passionate about RNA biology? Join the lab of @sebastianfalk.bsky.social for your Master's project to explore the function of proteins and protein complexes using cutting-edge biochemical, structural, and cell biology approaches ➡️ tinyurl.com/3k7upan4
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Marco Hein @marco.heinlab.org · 11/03/2026
I’m very happy to be part of our FWF “Emerging Fields” consortium! Together with @gekaragoz.bsky.social, @sebastianfalk.bsky.social and CCRI/CeMM/VetMedUni colleagues Eleni Tomazou, @dseruggia.bsky.social and @floriangrebien.bsky.social, we will study the ribosome code in pediatric cancers.
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Universität Wien / University of Vienna @univie.ac.at · 09/03/2026
Die Universität Wien ist an vier von insgesamt sechs neuen Emerging-Fields-Konsortien des @fwf-at.bsky.social beteiligt: Förderungen für die Bereiche #Kognitionsbiologie, #Genregulation, #Nanoplastik und #Mathematik. 🧪👨‍🔬👩‍🔬 Mehr Informationen zu den Projekten hier: ⤵️ www.univie.ac.at/aktuelles/pr...
Die Grundlagen für neue Therapien gegen Kinderkrebs erforschen.

Konsortiumsmitglieder und Forschungsstätten (von links nach rechts):

Davide Seruggia (St. Anna Kinderkrebsforschung)

Sebastian Falk (Universität Wien)

Marco Hein (Max Perutz Labs, Medizinische Universität Wien)

Gülsün Elif Karagöz (Koordination, Max Perutz Labs, Medizinische Universität Wien)

Florian Grebien (Veterinärmedizinische Universität Wien)

Eleni Marina Tomazou (St. Anna Kinderkrebsforschung)Enthüllung der Axiome der Mathematik.

Konsortiumsmitglieder und Forschungsstätten (von links nach rechts):

Laura Kovacs (Technische Universität Wien)

Michael Pinsker (Technische Universität Wien)

Juan P. Aguilera (Koordination, Technische Universität Wien)

Sandra Müller (Technische Universität Wien)

Vera Fischer (Universität Wien)

Georg Schiemer (Universität Wien)Dem Plastikstaub auf der Spur

Konsortiumsmitglieder und Forschungsstätten (von links nach rechts):

Andreas Stohl (Universität Wien)

Lea Ann Dailey (Universität Wien)

Markus Holzner (Koordination, BOKU University)

Alfredo Soldati (Technische Universität Wien)

Bernadette Rosati (BOKU University)Wie Körper und Umwelt Erfindungen hervorbringen

Konsortiumsmitglieder und Forschungsstätten (von links nach rechts):

Barbara Klump (Universität Wien)

Christoph Völter (Universität Wien)

Alice Auersperg (Koordination, Veterinärmedizinische Universität Wien)

Mark Christopher O’Hara (Universität Wien)

Justus Piater (Universität Innsbruck)
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 09/03/2026
A strong Perutz presence in a new @fwf-at.bsky.social consortium: @elifkaragoz.bsky.social will coordinate the Emerging Fields project 'Translating the Ribosome Code of Pediatric Cancers' 🤝 The team includes @sebastianfalk.bsky.social and @marco.heinlab.org ➡️ tinyurl.com/3d6z3ry5
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Michaela Müller-McNicoll @mixmue.bsky.social · 04/03/2026
We are excited to share our new preprint: iCLIP3 — an improved protocol for transcriptome-wide mapping of protein–RNA interactions at single-nucleotide resolution.
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Haselbach Lab @haselbachlab.bsky.social · 12/02/2026
This is a video summarizing our recent paper (www.nature.com/articles/s41...) youtu.be/eNY2CRlYTRo
nature.com
A multivalent adaptor mechanism drives the nuclear import of proteasomes - Nature Communications
Nuclear protein homeostasis relies on proteasome import into the nucleus. Here the authors identify how assembled human proteasomes are transported across the nuclear pore complex and reveal a mechani...
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Haselbach Lab @haselbachlab.bsky.social · 22/01/2026
And the 4th paper in this week contribution from our lab tells about ribosome biogenesis in yeast. A follow-up story from our wonderful collaborators in Graz - the Bergler Lab. Structural work was again done by the amazing @lgrundmann.bsky.social: academic.oup.com/nar/article/...
academic.oup.com
A comprehensive view on r-protein binding and rRNA domain structuring during early eukaryotic ribosome formation
Abstract. Formation of the eukaryotic ribosomal subunits follows a strict regime to assemble ribosomal proteins (r-protein) with ribosomal RNAs (rRNA) whil
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Wilfling Lab @wilflinglab.bsky.social · 20/01/2026
LLOMe has long been used to study lysosomal damage, yet how it works has remained a mystery. Using cryo-electron tomography, we show it forms amyloid structures inside lysosomes that mechanically rupture membranes – revealing a new paradigm for lysosomal failure. 🔗 doi.org/10.64898/202... #CryoET
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Carl Quintanilla @carlquintanilla.bsky.social · 09/01/2026
GERMAN PRESIDENT STEINMEIER: “.. the United States has broken with the values that it helped to establish .. “.. we have now moved beyond the stage where we can lament the lack of respect for international law or the erosion of the international order; we are far beyond that, I believe.”
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René Ketting @reneketting.bsky.social · 08/01/2026
Interested in the unexpected? How about a link between piRNAs and maternal histone mRNAs … Great collab with @sebastianfalk.bsky.social, @koenig-lab.bsky.social and Florian Steiner. #piRNA #histone #mRNA #maternal #RNAbiology #RNASky www.biorxiv.org/content/10.6...
biorxiv.org
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Julius Brennecke @juliusbrennecke.bsky.social · 22/12/2025
Intrigued by a long-standing conundrum in small RNA biology—how nuclear Argonaute proteins silence transposons when they *need* target transcription for their own recruitment—we studied the piRNA pathway. And found a hidden RNA-decay axis from Piwi to the RNA exosome.
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bioRxivpreprint @biorxivpreprint.bsky.social · 17/12/2025
RNA decay via the nuclear exosome is essential for piwi-mediated transposon silencing www.biorxiv.org/content/10.64898/20…
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bioRxiv Molecular Biology @biorxiv-molbio.bsky.social · 17/12/2025
RNA decay via the nuclear exosome is essential for piwi-mediated transposon silencing www.biorxiv.org/content/10.64898/20…
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Yasin Dagdas @plantophagy.bsky.social · 10/12/2025
Please RT‼️ #TenureTrack position @zmbh.uni-heidelberg.de one of the best #proteostasis research centres in the world. www.nature.com/naturecareer...
nature.com
Tenure Track Professorship (W1 with Tenure Track to W3) in “Molecular Biology" (f/m/d) - Heidelberg job with Universität Heidelberg | 12850668
The Center for Molecular Biology of Heidelberg University (ZMBH) and the Faculty of Biosciences invite applications for a   Tenure Track Professors...
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paulschanda.bsky.social @paulschanda.bsky.social · 18/10/2025
📢 New preprint: Experiment-guided AlphaFold3 resolves accurate protein ensembles. doi.org/10.1101/2025... AlphaFold3 is incredible, but has crucial limitations: it typically collapses to a single conformation, ignoring the inherent dynamics of proteins. And it can be wrong. Here's a solution. 🧵👇
Structures from AlphaFold3 - while often impressively good - tend to fail representing the dynamic ensembles accurately. And often parts of the structure are not correct.
Adding experimental data, directly in AlphaFold's diffusion step, provides physically realistic protein ensembles. This image shows two cases where AlphaFold3-only structures were largely improved by guiding with experimental data.
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Laura Lorenzo Orts @lorenzoorts.bsky.social · 14/12/2025
As 2025 comes to an end, it’s time for me to say good bye to my postdoc home during the past 6 years – the Pauli lab @pauligroup.bsky.social @impvienna.bsky.social
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EMBL Events @events.embl.org · 14/11/2025
Come discuss recent breakthroughs in RNA biology, from molecules to organisms, at the EMBO | EMBL Symposium 'The complex life of RNA'! 👉 s.embl.org/ees26-12-bl Submit your abstract by 7 July and present your research at #EESRNA 🥼
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 31/10/2025
📢 Open Call! The Max Perutz Labs invite applications for a Full Professorship in Integrative Structure Biology with a focus on in situ structural biology using cryo-electron tomography (cryo-ET) and related methods. More details ➡️ tinyurl.com/brswbymu
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Dominik Handler @86dominik.bsky.social · 14/10/2025
When transposons jump, genomes diverge - even in cultured cells. I am happy to share our new preprint: a chromosome-scale genome assembly for Drosophila OSC cells, one of the key model systems in the piRNA field, especially for nuclear piRNA biology. 🧬🧵 (1/12)
Graphical abstract: The Drosophila OSC Genome as a resource for transposon and piRNA biology. The figure illustrates the workflow and key findings. Left: De novo genome assembly using Oxford Nanopore Technologies (ONT) long reads and Hi-C data generates a phased assembly distinguishing unique (blue) and repetitive (orange) sequences. Dot plot comparison between OSC-r1.01 and dm6 reference genomes shows overall synteny with extensive structural variation. Middle: A freely accessible UCSC genome browser session displays multi-omics data tracks including gene models, transposon insertions, chromatin accessibility, transcription, small RNAs, and histone modifications. Right: New insights into flamenco piRNA cluster biology reveal >730 kb transcribed from a single promoter without major splicing. Tethering assays demonstrate long-range silencing effects across the locus, and genome browser tracks show coordinated regulation of piRNA production, transcription, and chromatin state. This resource enables comprehensive studies of transposon regulation and piRNA pathway function in a widely-used Drosophila cell line.
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Eva Stukenbrock @estukenbrock.bsky.social · 12/10/2025
Professorship in plant genetics. The Botanical Institute at Kiel University is advertising a W2 professorship. Great opportunity to do plant research in the north of Germany. See: www.berufungen.uni-kiel.de/de/dateien/o...
berufungen.uni-kiel.de
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Julius Brennecke @juliusbrennecke.bsky.social · 17/09/2025
PIWI clade Argonautes are essential for transposon silencing. Without them, animals are sterile due to massive transposon activity. But how does piRNA-guided target interaction translate into silencing? PhD student Júlia Portell Montserrat has an intriguing answer www.cell.com/molecular-ce...
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Laura Lorenzo Orts @lorenzoorts.bsky.social · 15/09/2025
I am excited to announce that I will be moving to IMB Mainz next year! The Winter call for the IPP PhD program is now open; if you are interested in maternal #mRNA regulation and #translation in early vertebrate development, please apply! Deadline: 16 October. More info: www.imb.de/students-pos...
imb.de
Laura Lorenzo Orts
IMB Mainz
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Jack Bravo @jpkbravo.bsky.social · 15/09/2025
Join us for the Austrian Cryo-EM Symposium Nov 11–12 at @istaresearch.bsky.social! Top speakers, cutting-edge cryo-EM, and a chance to explore Vienna & the ISTA campus. Register now 👉 cryoem-symposium.pages.ist.ac.at #cryoEM #teamtomo
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SFB 1551 - Collaborative Research Centre 1551 @sfb1551.bsky.social · 14/08/2025
🎉 Congrats to @kgaurav.bsky.social, Lukas Stelzl & @reneketting.bsky.social (SFB1551) on their new Biophysical Journal paper! #MUT16 #PhaseSeparation #MutatorFoci #SmallRNA #GeneRegulation #Celegans #ProteinAssembly #RNAResearch #MultiscaleSimulations Great teamwork👏👏👏 www.cell.com/biophysj/ful....
cell.com
Multi-scale Simulations of MUT-16 Scaffold Protein Phase Separation and Client Recognition
Phase separation of proteins plays a critical role in cellular organisation. How phase separated protein condensates underpin biological function and how condensates achieve specificity remain elusive...
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Eugene Valkov @eugenevalkov.bsky.social · 13/07/2025
Happy to share the latest work on a bacterial protein that inhibits human mRNA decay machinery, in collaboration with @smlea.bsky.social #RNAsky www.nature.com/articles/s41... Intracellular pathogen effector reprograms host gene expression by inhibiting mRNA decay | Nature Communications
nature.com
Intracellular pathogen effector reprograms host gene expression by inhibiting mRNA decay - Nature Communications
Intracellular pathogens hijack host gene expression to subvert cellular processes. Here, the authors show that Legionella pneumophila’s PieF effector inhibits the human CCR4-NOT deadenylation machiner...
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Drug Monkey @drugmonkey.bsky.social · 04/07/2025
This guy…..
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Christa Buecker @chribue.bsky.social · 02/07/2025
Exciting and rare opportunity to join the @maxperutzlabs.bsky.social and the @viennabiocenter.bsky.social as a Full Professor! www.nature.com/naturecareer...
nature.com
Full Professorship in Molecular Mechanisms of Disease - Vienna BioCenter, Austria job with Max Perutz Labs, University of Vienna | 12841053
Join theMax Perutz Labs as Full Professor to unravel disease mechanisms—from metabolism and stress to RNA regulation, epigenetics, and immunity.
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Sebastian Falk @sebastianfalk.bsky.social · 26/06/2025
Congratulations Marco and team. Great to see it published 🎉
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Kurianlab @kurianlab.bsky.social · 24/05/2025
www.science.org/doi/10.1126/...
science.org
Sequence-based prediction of intermolecular interactions driven by disordered regions
Intrinsically disordered regions (IDRs) in proteins play essential roles in cellular function. A growing body of work has shown that IDRs often interact with partners in a manner that does not depend ...
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 15/05/2025
🚀 Group leaders Peter Schlögelhofer, Robert Konrat, and @sebastianfalk.bsky.social have secured @fwf-at.bsky.social projects, bringing in nearly €1.5 million. Their projects span mRNA processing, novel NMR methods, and chromosome architecture ➡️ tinyurl.com/3a6j3pw8 @univie.ac.at @meduniwien.ac.at
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Silvia Ramundo @sramundo.bsky.social · 15/04/2025
If only funders saw the bigger picture… The obsession with medical research has come at a cost: plant biology has been sidelined, with countless discoveries stalled. Just look at Barbara McClintock, who discovered mobile genetic elements—only to be dismissed at the time of her groundbreaking work.
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Sebastian Falk @sebastianfalk.bsky.social · 14/04/2025
Reisen mit Deutschen Bahn; immer wieder ein Erlebnis, leider selten ein schoenes. ICE228 von Wien nach Wue; 5 h Fahrt und nur drei funktionierende Toiletten im ganzen Zug. Der Zug ist voll.. mehr als 20 minuten Anstehen fuer menschliche Beduerfnisse. @deutsche-bahn.bsky.social @bahn.bsky.social
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Anton Goloborodko @golobor.bsky.social · 11/04/2025
Earnshaw, Goloborodko, Dekker & Mirny labs are excited to present our latest work, "Rules of engagement for condensins and cohesins guide mitotic chromosome formation" - now accepted!! www.science.org/doi/10.1126/... A short clip describing the key results: www.youtube.com/watch?v=pmvO...
youtube.com
Rules of Engagement
YouTube video by Johan Gibcus
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Nelson Lau Lab @nelson-lau-lab.bsky.social · 11/04/2025
Why NIH/NIGMS funding of basic research matters with our latest work now out in @cp-cellreports.bsky.social sky.social. We solved a >30-year-old mystery of what transcription factor drives the Flamenco piRNA cluster required for female Drosophila fertility. /1 www.cell.com/cell-reports...
cell.com
Traffic Jam activates the Flamenco piRNA cluster locus and the Piwi pathway to ensure transposon silencing and Drosophila fertility
Rivera et al. discover Drosophila Flamenco piRNA cluster enhancers bound and activated by the Traffic Jam transcription factor. Traffic Jam also binds many follicle cell genes including activating mul...
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Jim Johnson 🇨🇦 @jimjohnsonsci.bsky.social · 04/04/2025
www.nature.com/naturecareer... UBC LSI Job!!
nature.com
Assistant Professor (tenure track) – Chromatin, Epigenetics - Vancouver, British Columbia (CA) job with The University of British Columbia (UBC) | 12837841
Assistant Professor (tenure track) - Chromatin Regulation, Genetic Regulatory Mechanisms, Epigenetics, Epigenomics
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 02/04/2025
🚨 Out now! The Leonard lab reveals in @pnas.org that phosphatases PHLPP1/2, once thought to dephosphorylate Akt and suppress tumors, are actually catalytically inactive. Instead, they have a non-catalytic role, reshaping our understanding of Akt regulation ➡️ tinyurl.com/hf28b3mu @univie.ac.at
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Victor Ambros @vambros.bsky.social · 31/03/2025
www.nytimes.com/interactive/...
nytimes.com
Read the Letter
Researchers at academic institutions nationwide say that U.S. science is being dismantled.
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Teri G @terilg.bsky.social · 26/03/2025
This is Yale Professor Timothy Snyder, who studies authoritarians and tyranny, with a warning. He and another Yale professor, Jason Stanley, who studies similar topics at Yale, are moving to Canadian universities, a result of the political and academic climate here.
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Kresten Lindorff-Larsen @lindorfflarsen.bsky.social · 25/03/2025
Our paper on prediction of phase-separation propensities of disordered proteins from sequence is now published: www.pnas.org/doi/10.1073/... The paper has been substantially updated compared to the preprint including new experimental data and using the neural network to finetune CALVADOS. 1/n
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Holthuis Lab @holthuislab.bsky.social · 25/03/2025
📯📯📯 10 days left to apply for the International Master MemBioMed "From Membrane Biology to Neuroscience & Experimental Medicine". Scholarships available for selected students to acquire intensive training in analysing the complex behavior of biomembranes and exploiting their therapeutic potential 👇👇
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Leo Kiss @leokiss.bsky.social · 24/03/2025
Super excited to share our latest work on deciphering the #Ubiquitin Code “𝗨𝗯𝗶𝗥𝗘𝗔𝗗 𝗱𝗲𝗰𝗶𝗽𝗵𝗲𝗿𝘀 𝗽𝗿𝗼𝘁𝗲𝗮𝘀𝗼𝗺𝗮𝗹 𝗱𝗲𝗴𝗿𝗮𝗱𝗮𝘁𝗶𝗼𝗻 𝗰𝗼𝗱𝗲 𝗼𝗳 𝗵𝗼𝗺𝗼𝘁𝘆𝗽𝗶𝗰 𝗮𝗻𝗱 𝗯𝗿𝗮𝗻𝗰𝗵𝗲𝗱 𝗞48 𝗮𝗻𝗱 𝗞63 𝘂𝗯𝗶𝗾𝘂𝗶𝘁𝗶𝗻 𝗰𝗵𝗮𝗶𝗻𝘀” @cp-molcell.bsky.social 1/8 www.cell.com/molecular-ce...
cell.com
UbiREAD deciphers proteasomal degradation code of homotypic and branched K48 and K63 ubiquitin chains
Ubiquitin chains determine the fates of their modified proteins, including proteasomal degradation. Kiss et al. present UbiREAD, a technology to monitor cellular degradation and deubiquitination at hi...
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birtehoecker.bsky.social @birtehoecker.bsky.social · 24/03/2025
Great talks & discussions at the 76th Mosbacher Kolloquium last week - in particular fantastic Lynen Lecture by Tanja Kortemme @kortemmelab.bsky.social and Eduard-Buchner award lecture by Dorothee Kern! And great to see so many old and new friends. @gbmev.bsky.social
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Pauli Group (posts by Andi Pauli) @pauligroup.bsky.social · 25/03/2025
One week left to register and submit abstracts for being considered for talks at our upcoming #EMBO Meeting "RNA Meets Protein Degradation" in Vienna! Check out the program with a fantastic line-up of speakers, including keynotes by Rachel Green and Manu Hedge. meetings.embo.org/event/25-rna...
meetings.embo.org
RNA meets protein decay
Establishing the composition of RNAs and proteins that defines the identities and functions of cells relies not only on the regulated biosynthesis of these molecules, but also equally importantly, on…
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Nature Microbiology @natmicrobiol.nature.com · 24/03/2025
Microtubules in Asgard archaea @cellpress.bsky.social @pilhoferlab.bsky.social www.cell.com/cell/fulltex...
cell.com
Microtubules in Asgard archaea
Discovery of heterodimeric, microtubule-forming tubulins in Asgard archaea, the closest known relatives of eukaryotes, reveals snapshots of microtubule evolution.
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