Boris Sieber

@borissieber.bsky.social

Postdoc @SophieMartinLab.bsky.social studying #MAPK signalling in fission yeast and emerging multicellular model organisms. Alumnus of @mjafreeman.bsky.social and @jordanraff.bsky.social

Delighted to see this published! 🎉 Why do cells invest in such tight control of tubulin synthesis? @ac-almeida.bsky.social shows that even small increases in tubulin levels alter microtubule dynamics and disrupt multicellular architecture and viability. Bravo to the whole team 👏! 👉 rdcu.be/fu8ek

Tubulin autoregulation tunes microtubule dynamics to support multicellular architecture and viability

Nature Communications - Almeida AC et al. uncover the physiological role of a long-elusive feedback pathway that regulates tubulin biosynthesis. By tuning microtubule dynamics, this mechanism...

rdcu.be

Ana Coelho Almeida@ac-almeida.bsky.social · 2w ago

Hot off the press!! 🚨 Our work is now published in #NatureCommunications! We show that keeping tubulin levels in check is key for preserving microtubule dynamics, multicellular architecture and viability. A huge thank you to the @ivanagasic.bsky.social team for making this possible! 🙌 rdcu.be/fu8ek

One of the biggest surprises from our new study! When we depleted SGEF, epithelial cysts didn't simply lose normal lumen architecture, they became motile, fused with neighboring cysts, and developed enlarged multi-lumen structures.

This is a fantastic opportunity, I started my lab through this scheme and the support throughout is phenomenal, please share.

The Dunn School, Oxford@dunnschool.bsky.social · 3w ago

Are you a postdoc interested in the mechanisms of disease? Do you have a great record and an exciting vision? Come and start your own lab @dunnschool.bsky.social by applying for sponsorship for early career fellowships. Deadline 22nd of September...please share! www.path.ox.ac.uk/work-with-us...

I am starting my lab at the University of Geneva next January! Incredibly excited to soon be joining the MOCEL department as an Asst. Professor. The lab will use evolutionary cell biology to study chromosomes, centromeres & speciation 🧬🔬🌱 Intrigued, want to join or collaborate? 🔗 helsenlab.org

Helsen lab | chromosome and centromere evolution

The Helsen lab at the University of Geneva explores how centromeres and chromosomes evolve, diversify, and function across eukaryotes. Discover our latest publications, research team, and open positio...

helsenlab.org

Can we program a kinase like a switch? Inspired by natural autoinhibitory complexes, we designed miniproteins against active- and inactive-like conformations of Focal Adhesion Kinase. Depending on the targeted state, the resulting binders either activated or inhibited the kinase.

Why did the two gametes (egg♀️ and sperm♂️) start to become different? It's a strategy to optimize the costs and benefits of investing into offspring! Read our brand new @pnas.org story that finds a molecular mechanism behind this evolutionary idea proposed in 1972 by Parker, Bell and Smith.

Meiotic cohesin Rec8 imposes fitness costs on fission yeast gametes favoring the evolution of parental bias in gene expression | PNAS

Differences between partner gametes, which evolved repeatedly in eukaryotes, can contribute to the evolution of the sexes, sexual selection, and no...

doi.org

Excited to share our new preprint! The derlin Dfm1 promotes Ste24-dependent translocon quality control! I'm so proud of the many master's, undergrad, & high school students who contributed to this project over many yrs. Very grateful to collab w/ Robb Tomko! (1/4) www.biorxiv.org/content/10.6...

Dfm1 promotes Ste24-dependent translocon quality control

Proteins stalled during endoplasmic reticulum translocation clog Sec61 channels and require translocon quality control (TQC) mechanisms for clearance. Genetic screens implicated the derlin Dfm1 in TQC...

biorxiv.org

Super excited to launch this search for a new endowed professor at the @biozentrum.unibas.ch! Join us to build a research cluster in Climate Biophysics! 🌍🌊🌾🔬🧪 This is a unique opportunity to create a community in Basel🇨🇭working together on this timely topic! ⏳🌡️ Questions? Please reach out! 👩‍🔬👨‍🔬

Biozentrum, University of Basel@biozentrum.unibas.ch · last mo.

New Assistant (tenure-track) or Associate Professor position in Climate #Biophysics! Join our international research community to explore fundamental molecular mechanisms underlying climate-relevant biological processes. Apply by 7 Sept 2026! www.biozentrum.unibas.ch/de/open-posi...