Boris Sieber

RNA-specific local translation is patterned by condensates for multinucleate cell growth - Nature Cell Biology Geisterfer, Jalihal et al. show spatially distinct effects of Whi3 condensates on target translation in Ashbya syncytia. In vitro, translation is enriched at condensate–solute interfaces but repressed...

Condensates are powerful ways to break symmetry and cells do remarkable things with them. Here we show that in a multinucleate fungus, a condensate regulates translation of a cyclin and a formin in distinct locations.
www.nature.com/articles/s41...

Here's the graphic for our Cell Reports paper!

Pls re-post: My department @oxfordbiochemistry.bsky.social are recruiting for several new faculty positions (links below). Broad search in molecular biology/biochemistry, across prokaryotes and eukaryotes. Interested in understanding life at the molecular level, this job might be for you!
1/n

You are passionate about ubiquitin, proteostasis and cellular biochemistry and want to be part of a collaborative, ambitious, excited and fun team? I am recruiting PhD students via the @imprs-lm.bsky.social graduate school:
www.imprs-lm.mpg.de/index.php/le...
(2/3)

same for me, I cannot survive without it 😅

Does anyone know of an anti mStayGold antibody that works for immunoblots / IP? Anyone tried the one from HUABIO (not even sure that’s a real company)? Thanks!

Actin directly interacts with vimentin intermediate filaments, enhancing both actin polymerization and nucleation! Fantastic experiments done by @lilianpaty.bsky.social with @romet-jegou-lab.bsky.social, now backed by our theory.

www.biorxiv.org/content/10.1...

🚨 #postdoc to be hired in the Paluch Lab 🚨

If you know anyone experienced with and, more importantly, excited about nanoscale architecture of #actincortex and super-res & electron #microscopy do encourage them to apply👇

Amazing colleagues, can only recommend 😉

www.cam.ac.uk/jobs/researc...

Mapping the yeast atructural interactome with AlphaFold3: an open call for collaboration We are excited to announce the early-stage release of our S. cerevisiae  structural interactome mapping project. Using AlphaFold3 (AF3), w...

We have started a project trying to predic the interactions/structures of all yeast protein pairs using an AlphaFold pooling approach. We are making the current dataset open and we welcome collaborations.
www.evocellnet.com/2026/03/mapp...

Phosphorylation-driven signaling plays a central role in how cells communicate. In this study, together with @saezlab.bsky.social , we revisit the EGF signaling pathway and ask: How well does our traditional understanding hold up in the era of modern phosphoproteomics? www.nature.com/articles/s41...

You are finishing your PhD and looking to continue in science?

The Martin lab @biology-unige.bsky.social has an open postdoctoral position in cell biology to study cell-cell fusion. For more information, please consult mocel.unige.ch/research-gro....

Thanks for reposting!

Preprint Editors – Development's next step into the preprint landscape Summary: This Editorial announces a call for Preprint Editors in Development to help expand the journal's relationship with preprints by curating our ‘In preprints’ articles.

New from @dev-journal.bsky.social: we're launching a new initiative and hiring Preprint Editors to help navigate the growing world of preprints in developmental & stem cell biology

Join our community & shape the future of research

journals.biologists.com/dev/article/...

Join us!

Image of FAF2's predicted helical domain interacting with the UFD1 UT3 domain. Next to this are similar images showing the predicted binding of de novo designed protein binders to the same region. Above is a sequence alignment indicating the key residues involved in the interaction.

🚨⚠️ New Preprint Alert! ⚠️ 🚨
www.biorxiv.org/content/10.6...

Screening p97 cofactors, @prithadg.bsky.social identified FAF2 as the strongest activator of the p97-UFD1-NPL4 complex. Leveraging her mechanistic descoveries, we designed 𝘥𝘦 𝘯𝘰𝘷𝘰 binders that could also enhance p97 substrate unfolding.

Less than a week to submit your abstract for #EESMechanobiology. Mechanobiology across the tree of life, from HeLa cells to weird animals and plants.

The submission deadline is 3 March: s.embl.org/ees26-06-bl

🗓️ 9 – 12 June 2026

We’re recruiting new Research Group Leaders!
We offer:
🔬 Core funding
💻 Access to world-leading infrastructure
👩🏽‍🔬A network of world-leading scientists
…and much more.
Apply by 11 April: embl.wd103.myworkdayjobs.com/en-US/EMBL/j...
#ResearchCareers #Bioinformatics @timcoorens.bsky.social @embl.org

Clonal-aggregative multicellularity tuned by salinity in a choanoflagellate - Nature The choanoflagellate Choanoeca flexa forms motile and contractile cell monolayers purely clonally, purely aggregatively or through a combination of both processes depending on environmental conditions.

A study in Nature shows that the single-celled form of a tiny, aquatic organism can turn into a multicellular version by three different routes. The discovery adds insight to the possible origins of multicellular life, suggesting a previously unrecognized degree of flexibility. 🧪

We are excited to be recruiting a new tenure track group leader in the Structural Studies Division at MRC LMB! It is an amazing place to start your own lab.
@mrclmb.bsky.social

Please get in touch if you have any questions.
www.nature.com/naturecareer...

CLCC1 promotes hepatic neutral lipid flux and nuclear pore complex assembly - Nature CRISPR–Cas9 screening identifies CLCC1 as a factor that increases neutral lipid flux to prevent hepatic steatosis and promotes nuclear pore complex assembly by promoting membrane bending and fusi...

Sooo happy to share our new paper in @nature.com “CLCC1 promotes hepatic neutral lipid flux and nuclear pore complex assembly.” A terrific collaboration with @arrudalab.bsky.social, led by co–first authors Alyssa Mathiowetz and Emily Maymand.
www.nature.com/articles/s41...

Oligomerization-dependent and synergistic regulation of Cdc42 GTPase cycling by a GEF and a GAP - EMBO Reports Cell polarity is a crucial biological process essential for cell division, directed growth, and motility. In Saccharomyces cerevisiae, polarity establishment centers around the small Rho-type GTPase C...

New paper out in EMBO Reports!
We show that Cdc42 regulation is oligomerization-dependent and that a GEF and a GAP act synergistically: Cdc24 relieves self-inhibition of oligomeric Rga2, enabling robust Cdc42 cycling.
doi.org/10.1038/s44319-026-00695-7
#cellpolarity #Cdc42 #synergy #syntheticbiology

Global genetic rewiring during compensatory evolution in the yeast polarity network - EMBO Reports Functional defects resulting from deleterious mutations can often be restored during evolution by compensatory mutations. Importantly, this process can generate the genetic diversity seen in networks ...

And another paper!
We show that compensatory evolution in the yeast polarity network leads to global genetic rewiring: restoring polarity reshapes gene disruption tolerance across the genome and rewires entire cellular processes—not just individual genes.
doi.org/10.1038/s44319-026-00709-4

I have multiple positions available to join my lab from this summer: #postdoc, #student and #technician. Adverts to follow but see www.saurinlab.com for further details. #senescence, #mitosis, #cellcycle, #phosphorylation are the key areas. Email me if interested.

Structural ontogeny of protein-protein interactions: www.science.org/doi/10.1126/...

Fundamental work on how PPIs (co)evolve, combining directed evolution and machine learning to reveal the role of chance and contingency.

Can we simulate realistic evolutionary trajectories and “replay the tape of life”? In this work, we propose a flexible, generalizable deep learning framework for modeling how the entire protein sequence evolves over time while capturing complex interactions across sites. 1/n
doi.org/10.64898/202...

Quick proteomics question: we want to use an exogenous biotin blocking scavenger for a TurboID experiment. We tried Biolock but is very inconsistent in our hands. Does anyone have another suggestion?

💫 We're hiring! The Computational Biology Facility is looking for a Computational Proteomics Scientist to collaborate on cutting-edge proteomics projects, develop new analytical approaches, and publish impactful research.
Apply by April 12 at: www.fmi.ch/education-ca...

Papers are like buses... You wait for ages, then two come along at once.

Huge congrats to @bornanovak.bsky.social and @jefflotthammer.bsky.social for pushing and driving every aspect of this work, preprinted ~1 year ago to the day (Friday before BPS), now published!

www.nature.com/articles/s41...

Un poste de Professeur des Universités va être ouvert lors de la campagne d’emploi 2026 à l’université Claude Bernard Lyon1 -
Profil Recherche : Biologie Moléculaire des Eucaryotes.
Profil Enseignement: Biologie Moléculaire.
Profil ci-joint.
Merci de diffuser dans vos réseaux.

A 🆕 #Ichthyosporea story
Led by@margaridaaraujo.bsky.social, in Co. @gautamdey.bsky.social & @hiralshah.bsky.social+🔥team across @embl.org & @sciencesunige.bsky.social
We finally have a look at what #microtubules are doing during #cellularization in #Sphaeroforma
▶️ tinyurl.com/MTSARC
#ProtistsOnSky

We posted a biorxiv preprint on structural bioinformatics, AlphaFold modeling & machine learning on predicting specificity of E3 ligase ring domains for different E2 enzymes. 1/4

Preprint: www.biorxiv.org/content/10.6...

Models/data (UbiqCore website): dunbrack.fccc.edu/ubiqcore