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Marcin J. Suskiewicz

@msuskiewicz.eurosky.social
1.9K followers 1.8K following 377 posts

Structural biologist and biochemist. CNRS researcher at CBM Orléans @cbm-upr4301.bsky.social. Interested in protein modifications & interactions. Also husband, dad of 3, friend, ☧. Personal website: msuskiewicz.github.io

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Reposted by Marcin J. Suskiewicz
Matthias Soller @matthiassoller.bsky.social · 01/10/2026
Excited to share our new paper thanks to Tom Dix, @davidmcquarrie.bsky.social @yuantian23.bsky.social and the others @mcf-uom.bsky.social @fbmh-uom.bsky.social @manchester.ac.uk about multimerization of prototype RRM ELAV/Hu family RNA binding proteins.
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Reposted by Marcin J. Suskiewicz
Greg Vert @plantubiquitin.bsky.social · 01/10/2026
Hydrophylic loop of PIN2 undergoes homotypic interaction via a conserved β-sheet motif to directly modulate clustering and dynamics www.pnas.org/doi/10.1073/...
pnas.org
A conserved β-sheet motif mediates PIN2 hydrophilic loop–loop interactions to regulate PIN2 dynamics | PNAS
PIN-FORMED (PIN) auxin transporters are essential for plant development, relying on asymmetric localization at the plasma membrane. While the centr...
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Reposted by Marcin J. Suskiewicz
c0nc0rdance @c0nc0rdance.bsky.social · 27/09/2026
I'll save you the click-through: A lab at University of Copenhagen had been feeding draft manuscripts & data into "Claude Science" & then Anthropic announces a discovery that this lab made a year ago but hasn't published yet. It's plausible that Claude found the same signatures independently...
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Reposted by Marcin J. Suskiewicz
Rasmus Jensen @rasmusjensen.bsky.social · 25/09/2026
🎉 Out today in Cell: the paper I've been looking forward to sharing for a long time 🎉 We used cryo-ET to find a molecular machine nobody knew existed on the surface of a minimal bacterium, and worked out what it does. 🧵(1/7) #TeamTomo #cryoET
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Reposted by Marcin J. Suskiewicz
MwahahahahahadScientist @mads100tist.bsky.social · 25/09/2026
This is it. This is what everyone is enabling by humoring genAI: you spend months writing something that took you years to get at, for an opaque algorithm that a few control to spit a number and cut you off right there and then. This is what we're up against 🧪
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Reposted by Marcin J. Suskiewicz
Kresten Lindorff-Larsen @lindorfflarsen.bsky.social · 24/09/2026
Pretty cool Using expandable DNA-origami rings with site-specifically tethered FG-Nups as mechanically responsive NPC mimics
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 23/09/2026
Thanks so much, I didn't notice that!
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Reposted by Marcin J. Suskiewicz
bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 23/09/2026
RNF213 M1-ubiquitinates damaged mitochondria to activate pro-inflammatory NF-κB signaling www.biorxiv.org/content/10.64898/20…
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Reposted by Marcin J. Suskiewicz
Kevin K. Yang 楊凱筌 @kevinkaichuang.bsky.social · 22/09/2026
Use reward-guided search in a generative model's latent space to design high-affinity protein binders to proteins and carbohydrates. @karstenkreis.bsky.social @pierceogden.bsky.social www.biorxiv.org/content/10.6...
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Reposted by Marcin J. Suskiewicz
Cathy Spangler @cathyspangler.bsky.social · 22/09/2026
I'm excited to share our new preprint, where we show that fine-tuning gold nanoparticle conjugation to different Fab structural elements can produce powerful, rigidly coupled, labeling tools for in-situ cryo-ET. Take a look if you want to see an AuNP in an EM map!🔬🧠 www.biorxiv.org/content/10.6...
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Izabela Sumara @sumaralab.bsky.social · 22/09/2026
Very proud of our new publication in EMBO Molecular Medicine 🥳, where we describe an antimitotic that selectively inhibits tumor growth without affecting normal tissues. Big congratulations to Eva Pangou, Sushil Awal, Ksenia Krupina and all authors, and many thanks to our amazing collaborators! 🔬🥳
link.springer.com
Pharmacological inhibition of UBASH3B induces mitotic arrest and selectively reduces tumor growth - EMBO Molecular Medicine
Cancer cells tolerate mitotic errors to sustain proliferation, yet the molecular dependencies enabling this tolerance remain poorly understood and largely unexploited therapeutically. UBASH3B ensures ...
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Reposted by Marcin J. Suskiewicz
Milot Mirdita @milot.bsky.social · 16/09/2026
ColabFold 1.6.3 is out! 2.5x faster, pip-installable, ipSAE+pDockQ2 scores. Thanks Choonghwan Lee, Marielle Russo, Gyuri Kim 🐍pip install colabfold[alphafold] CF2 Sneak Peak with AF3/Boltz/Protenix/ESMFold2… 🐍pip install "colabfold[alphafold3]@git+https://github.com/sokrypton/ColabFold@af3-preview"
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 22/09/2026
This results in a connection between the DNA-bound NPR1 and the whole Mediator complex, which then brings in RNA polymerase II to transcribe nearby genes. A nice mechanism supported by various biophysical techniques and a cryoEM sructure of the NPR1:SA:MED15A complex.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 22/09/2026
the underlying mechanism. First the authors use AlphaFold to screen previously identified candidate interactors of NPR1. They identify a potential direct interaction with the mediator complex subunit MED15A, and show experimentally that SA binding to NPR1 stabilises the NPR1:MED15A interaction.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 22/09/2026
It's always a treat to actually sit down and read a paper. This one's really nice. Unlike some plant hormones such as auxins that act through ubiquitylation + protein degradation, salicylic acid (SA) activates gene expression via its receptor/transcription factor NPR1. The paper elucidates
nature.com
Transcriptional activation of plant immunity by salicylic acid - Nature
A mechanistic basis for how the hormone salicylic acid promotes transcriptional activation during plant immune responses is described.
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Reposted by Marcin J. Suskiewicz
Martin Pacesa @martinpacesa.bsky.social · 21/09/2026
ʙɪɴᴅᴄʀᴀꜰᴛ2 is out, and we're not waiting for the paper. The full code drops today, free for academic and industry use. We're releasing it early so you can start designing right now, and bring its full power to the current Adaptyv competition. github.com/PacesaLab/Bi...
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 17/09/2026
Great questions. To the last question we can give a preliminary response - it doesn't seem to interfer with the dimer (BTB-domain dimerisation is very stable, anyway). As for other questions - we don't have answers yet.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 17/09/2026
We should add though that ZBTBs have been seen to be SUMOylated, notably ZBTB33/KAISO in this great paper, but what we claim is the unusually high intrinsic SUMOylability of these proteins in vitro.
nature.com
DeSUMOylation switches Kaiso from activator to repressor upon hyperosmotic stress - Cell Death & Differentiation
Cell Death & Differentiation - DeSUMOylation switches Kaiso from activator to repressor upon hyperosmotic stress
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Reposted by Marcin J. Suskiewicz
Aanchal Mishra @origichals.bsky.social · 17/09/2026
El-Hadji is a gem of a person and a great scientist. One won't regret having a person with rare combo of kindness and scientific brilliance.
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Reposted by Marcin J. Suskiewicz
Danve Castroverde @danvec.bsky.social · 16/09/2026
Transcriptional activation of plant immunity by salicylic acid www.nature.com/articles/s41...
nature.com
Transcriptional activation of plant immunity by salicylic acid - Nature
A mechanistic basis for how the hormone salicylic acid promotes transcriptional activation during plant immune responses is described.
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Reposted by Marcin J. Suskiewicz
IMPRS for Living Matter @imprs-lm.bsky.social · 15/09/2026
🔍 Curious about how the proteolytic enzymes of the ubiquitin system work—and how these mechanisms can inspire new therapeutic strategies? Apply for a #PhDposition in the Gersch lab @maltegersch.bsky.social at @imprs-lm.bsky.social #proteolysis #ubiquitin #biochemistry #proteinchemistry
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Reposted by Marcin J. Suskiewicz
CNRS Chimie @cnrschimie.bsky.social · 15/09/2026
📢 #Annonce CNRS Chimie arrive sur Bluesky ! 🧪 L’un des dix instituts du @cnrs.fr, CNRS Chimie anime et coordonne la recherche en chimie en s’appuyant sur près de 14 000 personnes, 150 laboratoires et une cinquantaine de partenaires industriels. #Chimie #CNRS #Fierd’êtrechimiste
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Reposted by Marcin J. Suskiewicz
Guillaume Gaullier @guillawme.eurosky.social · 02/09/2026
This paper was a nice side quest that started as a random encounter with @hrbridges.bsky.social at the poster session of the 2025 @ccpem.bsky.social Spring Symposium. It was very satisfying to finally see the macro domain of ALC1 that had escaped all previous structures of ALC1-nucleosome complexes!
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 15/09/2026
Today, the day of the 100th anniversary symposium for Jean-Pierre Serre in Paris, I'm thinking of this quote from another mathematician, A. Connes. I do think it's important we foster confidence in our own expertise - as a nonsense filter and departure point for creativity.
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Reposted by Marcin J. Suskiewicz
Nature Structural & Molecular Biology @natsmb.nature.com · 14/09/2026
New online: Cryo-EM structure, enzymatic activity and genome targeting of canonical PRC1
dlvr.it
Cryo-EM structure, enzymatic activity and genome targeting of canonical PRC1
Nature Structural & Molecular Biology, Published online: 14 September 2026; doi:10.1038/s41594-026-01885-6Ciapponi et al. determine the cryo-electron microscopy structure of the canonical Polycomb repressive complex 1 holocomplex and show how its architecture coordinates complex assembly, H2A monoubiquitination and genomic targeting.
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Reposted by Marcin J. Suskiewicz
Pedro Beltrao @pedrobeltrao.bsky.social · 14/09/2026
It is outrageous that these companies don't give back this trained model for others to make discoveries on. It is not like their competitive advantage is the model itself since they are willing to share the model among the participating companies. More info here: www.apheris.com/resources/fe...
apheris.com
Apheris
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Reposted by Marcin J. Suskiewicz
Duncan Sproul @sproullab.bsky.social · 14/09/2026
🚨 #Postdoc position open. Want to understand non-canonical #epigenetic regulation of mammalian transcription? Come work @uoe-igc.bsky.social in Edinburgh! We’re looking for a motivated & collaborative colleague with a strong track record. 📅 14 October 2026 📢 Please share Apply here 👇
elxw.fa.em3.oraclecloud.com
Post-Doctoral Research Associate
An exciting postdoctoral position is available to research the role of epigenetic marks in gene regulation.
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Reposted by Marcin J. Suskiewicz
Elliott Lab @elliottlab.bsky.social · 14/08/2026
Huge effort from the Lab into the mechanics of the mysterious #ubiquitin like protein FAT10 – taking structural snapshots of FAT10 activation by UBA6 and transfer onto UBE2Z plus really interesting insights into InsP6 regulating FAT10 conjugation pathways: www.nature.com/articles/s41...
nature.com
Structural determinants for FAT10 activation and transfer from UBA6 to E2 enzymes - Nature Communications
Cryo-EM captures FAT10 activation and transfer from UBA6 to E2 UBE2Z, revealing FAT10 monopolises UBA6. Efficient transfer requires E2 engagement of both FAT10 UBL domains, particularly UBL2, and co-o...
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Very kind of you, Leo! It is a conceptually simple story but indeed very nice work by El Hadji et al.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
In cells it remains inconclusive still. In vitro it is very highly efficient without E3. My general view is that E3s stimulate UBC9-dependent SUMOylation in particular conditions/locations, but which substrates/sites are SUMOylated is mostly a function of their inherent reactivity with UBC9 anyway.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Thanks a lot!
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Very true. That's why I thought AlphaFold would have hard time predicting its partners (and also because it is so conserved, very little sequence variability). But it seems it works quite well, and one can do interaction screens.
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Reposted by Marcin J. Suskiewicz
Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
General conclusions/models? Efficient SUMOylation as a new function of (some) BTB domains + it supports a hypothesis that structural SUMOylation motifs pre-organised for productive UBC9 engagement may be more efficiently modified than typical flexible SUMOylation motifs. Might apply to other PTMs.
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Reposted by Marcin J. Suskiewicz
Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Strikingly, the SUMOylation of ZBTB38 BTB is as efficient and complete under our conditions in vitro as that of RANGAP1, so far known as the best modified SUMO substrate. We can also detect endogenous modification of flZBTB38 in cells with western and show it depends on K43.
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Reposted by Marcin J. Suskiewicz
Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
We found, in an AlphaFold interaction screen, the SUMO E2 UBC9 as a potential binder to BTB domain of ZBTB38. The predicted binding surface is conserved and positions K43 of ZBTB38 within UBC9 active site. We reconstituted & validated the interaction with SEC and ITC.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
P. S. Do have a look at this previous study where they study functional aspects of the SUMOylation of one of these ZBTBs, ZBTB33, in cells www.nature.com/articles/s41...
nature.com
DeSUMOylation switches Kaiso from activator to repressor upon hyperosmotic stress - Cell Death & Differentiation
Cell Death & Differentiation - DeSUMOylation switches Kaiso from activator to repressor upon hyperosmotic stress
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
The manuscript is currently in revision and we thank Editor and Reviewers for their input -- the paper will further improve! El Hadji, who is great and has a rare combination of chemistry and biochemistry skiils, has more almost-finished projects up his sleave and is looking for jobs/fellowships!
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
I thank El Hadji and all Co-Authors, from our Team (i.e. @origichals.bsky.social on here); Vincent @ucagne.bsky.social ; and especially @defossezlab.bsky.social who performed work in cells. Also @erc.europa.eu @agencerecherche.bsky.social and other funding and of course our @cbm-upr4301.bsky.social
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
General conclusions/models? Efficient SUMOylation as a new function of (some) BTB domains + it supports a hypothesis that structural SUMOylation motifs pre-organised for productive UBC9 engagement may be more efficiently modified than typical flexible SUMOylation motifs. Might apply to other PTMs.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
This property extends to 5 human ZBTB proteins (38, 4, 33, 21, 14). This work continues from our previous study www.cell.com/molecular-ce... where we found that BTB domains of around 20 different ZBTB proteins form filaments. Now we show that 5 other ZBTB proteins undergo efficient SUMOylation.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Strikingly, the SUMOylation of ZBTB38 BTB is as efficient and complete under our conditions in vitro as that of RANGAP1, so far known as the best modified SUMO substrate. We can also detect endogenous modification of flZBTB38 in cells with western and show it depends on K43.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
We found, in an AlphaFold interaction screen, the SUMO E2 UBC9 as a potential binder to BTB domain of ZBTB38. The predicted binding surface is conserved and positions K43 of ZBTB38 within UBC9 active site. We reconstituted & validated the interaction with SEC and ITC.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 14/09/2026
Happy to share our preprint on a subset of ZBTB BTB domains as highly efficient natural SUMO 'supersubstrates'. The work was spearheaded by a great postdoc, El Hadji Cisse, with input from other team members and in collaboration with @defossezlab.bsky.social and @ucagne.bsky.social
biorxiv.org
A new class of inherently efficient SUMOylation substrates
SUMOylation is an essential eukaryotic ubiquitin-like post-translational modification that plays a central role in the regulation of various nuclear processes and stress responses. It canonically occu...
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Reposted by Marcin J. Suskiewicz
Magnus Kjærgaard @proteinmagnus.bsky.social · 13/09/2026
How does linear motifs drive dephosphorylation - and does it matter where and how strong the motifs are? These are the question Evi answers in her brand new pre-print: www.biorxiv.org/content/10.6...
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 09/09/2026
Regarding Navier-Stokes, have you seen this statement by the mathematician Tristan Buckmaster? : cims.nyu.edu/~tristanb/st...
cims.nyu.edu
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 09/09/2026
Very much looking forward to reading this story!
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 09/09/2026
Legends! ❤️
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The Royal Society @royalsociety.org · 27/08/2026
Professor Dame Janet M Thornton DBE FMedSci FRS is awarded the Croonian Medal and Lecture 2027 for her pioneering work in protein structural and functional bioinformatics. #RSMedals royalsociety.org/medals-and-prizes/…
A scientist sits at a desk in front of a computer display with complicated graphics on the screen. She is turned slightly and smiling at the camera.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 07/09/2026
@inoagrafioti.bsky.social This I haven't read either (talking about books I haven't read...😳) but it's also on my shelf - Oxford women intellectual history one generation (two?) earlier.
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Marcin J. Suskiewicz @msuskiewicz.eurosky.social · 07/09/2026
Do consider coming to France
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