Reposted by Allegretti LabCasper Berger @casperberger.bsky.social · 23/09/2026We developed Adaptive Polishing for the consistent preparation of ~150 nm thin FIB-lamellae. This was done by using imaging feedback to adjust parameters for each lamella, or Adaptive Milling, rather than applying a fixed recipe. Preprint: doi.org/10.64898/202... 24117
Reposted by Allegretti LabPiotr Kolata @piotrkolata.bsky.social · 14/09/2026So happy to see our publication about sperm #proteasomes featured in the Editorial about understanding molecular mechanism of #reproduction in @natsmb.nature.com! 🥂🎉 Thank you to everyone involved, particularly @matteoall.bsky.social @tomdendooven.bsky.social @a-dsantos.bsky.social 💙nature.comUnderstanding the molecular mechanisms of reproductionNature Structural & Molecular Biology - Mammalian life begins with oocytes and sperm cells, but our understanding of the molecular mechanisms endowing these cells with their unique properties... 052
Reposted by Allegretti Labdimitristypas.bsky.social @dimitristypas.bsky.social · 02/09/2026The proteostatic environment of gametes is unique. Work just out @natsmb.nature.com from @piotrkolata.bsky.social @a-dsantos.bsky.social @tomdendooven.bsky.social @matteoall.bsky.social is a prime example and sheds light on proteasomes in the human sperm nucleus! www.nature.com/articles/s41...nature.comMolecular architecture and spatial organization of proteasomes in the human sperm nucleus - Nature Structural & Molecular BiologyProteasomes are essential for male fertility. Kolata, dos Santos, Dendooven and colleagues show large nuclear proteasomal assemblies segregated from DNA in human sperm, forming after meiosis and with ... 0114
Reposted by Allegretti LabPiotr Kolata @piotrkolata.bsky.social · 01/09/2026So happy to see our work in @natsmb.nature.com ! 💥 It was one of these two-week side projects that became the best two years of my scientific life 😅 Enjoy the summary of our story from @mrclmb.ac.uk and the publication itself! @a-dsantos.bsky.social @tomdendooven.bsky.social @matteoall.bsky.socialnature.comMolecular architecture and spatial organization of proteasomes in the human sperm nucleus - Nature Structural & Molecular BiologyProteasomes are essential for male fertility. Kolata, dos Santos, Dendooven and colleagues show large nuclear proteasomal assemblies segregated from DNA in human sperm, forming after meiosis and with ... 0267
Reposted by Allegretti LabMRC Laboratory of Molecular Biology @mrclmb.ac.uk · 01/09/2026Using advanced microscopy @piotrkolata.bsky.social @a-dsantos.bsky.social @tomdendooven.bsky.social @matteoall.bsky.social have identified the molecular anatomy & organisation of proteasomes in the sperm nucleus. Read more about the study here: mrclmb.ac.uk/news-events/... #LMBResearch 🧪 02712
Reposted by Allegretti LabTanmay Bharat @tbharat-lab.bsky.social · 08/06/2026Disrupting phage liquid crystalline droplets restores antibiotic susceptibility in Pseudomonas aeruginosa biofilms out in @plosbiology.org by @abultarafder.bsky.social and team. Exciting collaboration with @geiselbiofilm.bsky.social @pearce-maths.bsky.social and others 14215
Allegretti Lab @matteoall.bsky.social · 27/05/2026We're happy to announce our new preprint! 🐸 easymode: general pretrained networks for cellular cryo-ET. Segment ~20 cellular features – ribosomes, microtubules, mitochondria, nuclei & more – with zero model training. 🔗 doi.org/10.64898/202... 🧵👇 116755
Reposted by Allegretti LabSjors Scheres @sjorsscheres.bsky.social · 16/10/2025I just made an account and voted for this biology laboratory made of LEGO to "promote biological research and inspire more people into the world of biology". They need 10K votes. Reposting and/or voting below would be helpful. 🤗 beta.ideas.lego.com/product-idea...beta.ideas.lego.comBiological Laboratory | LEGO® IdeasThis is a two-floor realistic Biological Laboratory building. In this design, I try to tell stories about biologists, introduce biology concepts to general publ… 8223131
Reposted by Allegretti LabLori Passmore @lapassmore.bsky.social · 25/02/2026We 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...nature.comResearch Group Leader Tenure Track - Structural Studies - LMB 2775 - Cambridge, Cambridgeshire (GB) job with MRC Laboratory of Molecular Biology (LMB) | 12854636Research Group Leader Tenure Track Starting Salary £67,979 to £76,868 per annum MRC Laboratory of Molecular Biology, Cambridge, UK The MRC Laborato... 15254
Reposted by Allegretti LabWilfling Lab @wilflinglab.bsky.social · 13/01/2026We are excited to share our new preprint which is now available to read on biorXiv: doi.org/10.64898/202... 🎉🎉🎉 212139
Allegretti Lab @matteoall.bsky.social · 19/12/2025We are thrilled to share our new pre-print on the molecular anatomy of nuclear proteasome in human sperm cells! #In-cellcryo-ET + #SPA + #LM! @piotrkolata.bsky.social @a-dsantos.bsky.social, @tomdendooven.bsky.social!! doi.org/10.64898/202... 38921
Reposted by Allegretti LabBen Barad @baradlab.com · 12/12/2025Holy cow the Zhou lab at UCLA is cooking with Isonet 2 - www.biorxiv.org/content/10.6... Averaging-free direct visualization of ribosome translational state! #teamtomo #cryoet 210235
Reposted by Allegretti LabKiarash Jamali @kjamali.bsky.social · 09/12/2025I’m excited to announce that I will be starting my research group on computational enzyme design at the Generative Biology Institute, Oxford, UK (@eitoxford.bsky.social)! PhD applications are open, deadline is Jan 8th (www.chem.ox.ac.uk/genbio-dtp). Email kiarash.jamali@eit.org with any questions!chem.ox.ac.ukGenBio DTPOptional supporting text 96114
Reposted by Allegretti LabJames Briscoe @jamesbriscoe.bsky.social · 07/10/2025Very sad news, John Gurdon has died. A developmental biologist's developmental biologist, Nobel prize winner His work is the foundation of much of today's dev & stem cell bio. An inspiration to many, including me. Always asking questions & wanting the answers www.magd.cam.ac.uk/news/profess...magd.cam.ac.ukProfessor Sir John Gurdon FRS (1933-2025) | Magdalene CollegeMagdalene College is deeply saddened to announce the death of Professor Sir John Gurdon FRS, who served as Master of the College from 1995 to 2002. 7190100
Reposted by Allegretti LabpreLights @prelights.bsky.social · 18/09/2025Another preprint highlight was posted by Kanishka Parashar! Read how paclitaxel can target cancer cells by destabilising nuclear integrity in interphase - #preprint from @matteoall.bsky.social & team #preprint #preLight ⬇️👀 prelights.biologists.com/highlights/p...prelights.biologists.comPaclitaxel compromises nuclear integrity in interphase through SUN2-mediated cytoskeletal coupling - preLightsPaclitaxel destabilizes nuclear integrity in interphase by driving microtubule–vimentin aggregates towards the nucleus, leading to SUN2 dependent loss of Lamin A/C loss and enhanced cancer cell vulner... 112
Reposted by Allegretti LabMartin Pacesa @martinpacesa.bsky.social · 27/08/2025Exciting to see our protein binder design pipeline BindCraft published in its final form in @Nature ! This has been an amazing collaborative effort with Lennart, Christian, @sokrypton.org, Bruno and many other amazing lab members and collaborators. www.nature.com/articles/s41... 14305109
Reposted by Allegretti LabMRC Laboratory of Molecular Biology @mrclmb.ac.uk · 11/08/2025We’re looking for a Research Support Officer to join @matteoall.bsky.social’s group, working with @piotrkolata.bsky.social to investigate nuclear-cytoskeletal coupling in mammalian cells using #cryoEM, #cryoET & other biochemical approaches. www.jobs.ac.uk/job/DOE317/r... Closes 31 AUG #ScienceJobs 073
Reposted by Allegretti LabA. Reza Mehdipour @rezamehdipour.bsky.social · 05/08/2025We discovered that the SUN5-Nesprin3 LINC complex forms a hexagonal lattice at the sperm HTCA, which radically reshapes the nuclear membrane locally! Our findings also provide the structural basis for understanding the severe ASS (Acephalic Sperm Syndrome) male infertility phenotype. 171
Reposted by Allegretti LabA. Reza Mehdipour @rezamehdipour.bsky.social · 05/08/2025This work is the result of a fantastic collaboration with@matteoall.bsky.social! @warred.bsky.social, @a-dsantos.bsky.social , @alisterburt.bsky.social , @tom-hale.bsky.social, @mrclmb.bsky.social, 142
Reposted by Allegretti LabA. Reza Mehdipour @rezamehdipour.bsky.social · 05/08/2025We are excited to announce the first in-cell structure of a LINC complex within a native nuclear envelope at subnanometer resolution!! #In-cell cryo-ET + #atomistic MD simulations! @tomdendooven.bsky.social et al!! www.biorxiv.org/content/10.1... 24314
Reposted by Allegretti LabSjors Scheres @sjorsscheres.bsky.social · 05/08/2025Fantastic work by the group of @matteoall.bsky.social : a SUN5:Nesprin3 complex at the head:tail junction of sperm cells. 🤯 #teamtomo www.biorxiv.org/content/10.1...biorxiv.orgIn-cell structure of a LINC complex reveals the molecular basis for membrane remodelling and head-to-tail coupling in sperm cellsIn eukaryotic cells, LINC complexes physically bridge the two nuclear membranes to cytoskeletal filaments, transmitting mechanical forces to the nucleus. Due to their dynamic and membrane-embedded nat... 14118
Allegretti Lab @matteoall.bsky.social · 01/08/2025Dear all, we are looking for a research assistant in protein biochemistry / cell biology to support our work on nuclear reshaping in human cells. Here the link to the call, please spread: mrc.tal.net/vx/mobile-0/...mrc.tal.netResearch Support Officer - Structural Studies - Dr Matteo Allegretti - LMB 2674 - Medical Research CouncilLocation: Cambridge. Vacancy: Research Support Officer - Structural Studies - Dr Matteo Allegretti - LMB 2674. Closing Date: 31/08/2025, 23:55 074
Reposted by Allegretti LabRicardo D. Righetto @lifeonthewedge.bsky.social · 27/07/2025Using #cryoET to investigate plant cell-cell communication 🤩🌿 1141
Reposted by Allegretti LabTanmay Bharat @tbharat-lab.bsky.social · 23/06/2025Structure of the virulence-associated Neisseria meningitidis filamentous bacteriophage MDAphi Out in @pnas.org Congrats @janboehning.bsky.social @abultarafder.bsky.social Miles Graham @mathieucoureuil.bsky.social @mrclmb.bsky.social @hopitalnecker.bsky.social www.pnas.org/doi/10.1073/... 15718
Reposted by Allegretti LabDerivery Lab - MRC LMB @deriverylab.bsky.social · 23/06/2025🚨 JOB ALERT 🚨 We're hiring a Research Assistant – no PhD needed! Join us to explore the molecular mechanisms of receptor sorting in endosomes. Experience in protein expression/purification, cloning & cell culture desired 🧫🔬 Apply now 👉 www.nature.com/naturecareer... #STEMCareers #ResearchJobs 15033
Reposted by Allegretti LabMRC Laboratory of Molecular Biology @mrclmb.ac.uk · 05/06/2025Congratulations to @tbharat-lab.bsky.social, Group Leader in the LMB’s Structural Studies Division, who has received the Gold Medal from @embo.org for his research on prokaryotic surface molecules. Read more here: www2.mrc-lmb.cam.ac.uk/tanmay-bhara... #LMBNews 36212
Reposted by Allegretti LabPhil Holliger @philholliger.bsky.social · 29/05/2025New paper from my group rdcu.be/eoaRr "Trinucleotide substrates under pH–freeze–thaw cycles enable open-ended exponential RNA replication by a polymerase ribozyme" in Nature Chemistry — great collaboration with attwaterlab.uk.rdcu.beTrinucleotide substrates under pH–freeze–thaw cycles enable open-ended exponential RNA replication by a polymerase ribozymeNature Chemistry - Models of abiotic RNA replication suffer from inherent product inhibition arising from the high stability of RNA duplexes. Now, it has been shown that RNA trinucleotide... 03013
Reposted by Allegretti LabBen Engel @cellarchlab.com · 07/05/2025“The Website” is here! It can be intimidating getting into analysis of #CryoET data, and software is evolving all the time👩💻🚀. @phaips.vd.st & @florentwaltz.bsky.social put our lab’s workflows into an online guide. We hope this helps lower the bar to joining #TeamTomo. Feedback much appreciated! 🧪🧶🧬🔬 38720
Reposted by Allegretti LabGaia Pigino @gaiapigino.bsky.social · 19/02/2025“Join the Pigino Lab! We’re hiring a PhD student to explore primary cilia biology using advanced imaging, spatial ‘omics, and AI. Apply now at www.cilia-ai.eu and be part of the Cilia-AI Doctoral Network!” 02827
Reposted by Allegretti LabTanmay Bharat @tbharat-lab.bsky.social · 23/04/2025Finally in peer-reviewed form: Mapping the ultrastructural topology of the corynebacterial cell surface. @bupbuse.bsky.social @vikramalva.bsky.social Please also see concurrent beautiful work from @adriasogues.bsky.social and Han Remaut. 47229
Reposted by Allegretti LabSuyang Zhang @suyangzhang.bsky.social · 24/03/2025Excited to share our new preprint on co-transcriptional splicing! U1 snRNP is recruited to RNA polymerase II through multiple interaction sites, with elongation factor SPT6 binding directly to the U1 snRNP protein. www.biorxiv.org/content/10.1... #cryoEM #transcription #splicing 35020
Reposted by Allegretti LabSven Klumpe @svenklumpe.bsky.social · 05/03/2025Happy to share our manuscript on the in situ visualization of the copia retrotransposon in its final form today published in @cellcellpress.bsky.social www.cell.com/cell/fulltex.... What’s new? 1219679
Reposted by Allegretti LabGW Gant Luxton @gwgl.bsky.social · 21/02/2025science.org/doi/10.1126/... Just published! We uncovered a molecular machine that connects the cell's two major structural networks revealing how cells accomplish precise internal reorganization - a process disrupted in diseases ranging from cancer to multiple sclerosis.science.orgActive microtubule-actin cross-talk mediated by a nesprin-2G–kinesin complexNesprin-2 Giant links the nucleus to the cytoskeleton, enabling actin transport and nuclear movement through kinesin-1 activation. 1439
Reposted by Allegretti LabSjors Scheres @sjorsscheres.bsky.social · 27/01/2025We have an exciting opportunity for a new independent group leader with an interest in structural/molecular biology and machine learning to join our Division of Structural Studies at the @mrclmb.bsky.social! 🥳 Re-posts appreciated. www.nature.com/naturecareer...nature.comResearch Group Leader Tenure Track - Structural Studies - LMB 2549 - Cambridgeshire job with MRC Laboratory of Molecular Biology | 12835196Research Group Leader Tenure Track Starting Salary £65,940 to £74,448 per annum MRC Laboratory of Molecular Biology, Cambridge, UK 17371
Allegretti Lab @matteoall.bsky.social · 20/01/2025Ever wondered how the chemotherapeutic drug paclitaxel can target slow-dividing tumours? Check out our preprint Hale et al! @tom-hale.bsky.social found a novel non-mitotic mechanism of action for paclitaxel involving nuclear-cytoskeletal coupling via the LINC complex! www.biorxiv.org/content/10.1... 1357
Reposted by Allegretti LabLander Lab @landerlab.bsky.social · 16/01/2025Protein production for cryoEM structure determination just got a lot cheaper - high resolution structure from half a plate of HEK cells with the "MIcro ISolation (MISO)" microfluidics-based approach. Congrats to the Brunner and Efremov labs in Brussels! www.biorxiv.org/content/10.1... 04411
Reposted by Allegretti LabBen Engel @cellarchlab.com · 06/01/2025Towards community-driven visual proteomics! Excited to finally share this large-scale curated & annotated dataset of 1829 high-quality #cryoET tomograms of the little green alga that just keeps giving— Chlamydomonas! 🧪🧶🧬🌾🌊🌍 Preprint📜: www.biorxiv.org/content/10.1... A short thread🧵👇 7338128
Reposted by Allegretti LabMRC-LMB Cell Biology Division @cellbiol-mrclmb.bsky.social · 03/12/2024Wonderful to see that our colleague @marta-shahbazi.bsky.social is now an EMBO YIP. www.embo.org/press-releas...embo.orgTwenty-seven scientists become EMBO Young Investigators – Press releases – EMBOThe group leaders join an international network of nearly 800 life scientists and receive financial support 0183
Reposted by Allegretti Labjankosinski.bsky.social @jankosinski.bsky.social · 04/12/2024Crosslinks can sometimes improve AlphaFold3 models. Crosslinking is an experimental method often used as a source of distance restraints in modeling. In AlphaFold3, instead of using restraints, crosslinks can be included as covalent ligands. Thanks to Agnieszka Obarska-Kosinska for the idea. 310323
Reposted by Allegretti LabMRC Laboratory of Molecular Biology @mrclmb.ac.uk · 03/12/2024Congratulations to @marta-shahbazi.bsky.social, Group Leader in @cellbiol-mrclmb.bsky.social, who has joined the EMBO Young Investigator Programme! Read more here about the programme and Marta’s research here: www2.mrc-lmb.cam.ac.uk/marta-shahba... #LMBNews 1342
Reposted by Allegretti LabMRC Laboratory of Molecular Biology @mrclmb.ac.uk · 22/11/2024🌟 Welcome to the MRC Laboratory of Molecular Biology on Bluesky! We’re thrilled to connect with you and share our research insights, job opportunities, events, and more. Join us on this journey as we advance science and improve human health together! #MolecularBiology #Research #Innovation 04816
Reposted by Allegretti LabUte Hellmich @hellmichgroup.bsky.social · 16/11/2024Ok, trying to bring my community back together... I created a starter pack for lipids and membrane protein aficionados! Feel free to share, add and distribute, so we can come together again! 😍 go.bsky.app/AEeXh86 7112565
Reposted by Allegretti LabRémi Fronzes @fronzeslab.bsky.social · 08/11/2024Here is a starter pack for CryoEM/ET enthousiasts To be completed go.bsky.app/JmQksC 7211076
Allegretti Lab @matteoall.bsky.social · 13/11/2024Join us! Ill present some of our recent tomo work on sperm cells! 000
Allegretti Lab @matteoall.bsky.social · 01/11/2024Ever wondered if nuclear pore architecture and function changes during germ cell differentiation? In human spermatogenesis it does, and radically!! Check out our first lab preprint @AliaCSantos et al! www.biorxiv.org/content/10.1... 0177
Reposted by Allegretti LabSven Klumpe @svenklumpe.bsky.social · 24/02/2024Over 4 years in the making, I am extremely happy to share our pre-print on the “In-cell structure and snapshots of copia retrotransposons in intact tissue”. We used cryo-ET to resolve the copia capsid structure to subnanometer resolution inside cells: www.biorxiv.org/content/10.1... 56226
Reposted by Allegretti LabJim Hurley @jimhurley.bsky.social · 02/02/2024Join us @berkeleyMCB Mar. 25 for Cell Biology at the Nanoscale with @cellarchlab @bronwynalucas.bsky.social @thevillalab.bsky.social and more. Register at tinyurl.com/5n7jd7mr. 0103
Reposted by Allegretti LabBen Barad @baradlab.com · 24/01/2024The Barad lab is hiring across all levels. Open positions here: baradlab.com/join/. If you are interested in doing cutting edge tomography and computational methods development to study intracellular bacterial infection, and living in Portland, OR, but don't fit the openings, reach out anyway!baradlab.comJoin the Barad LabThe Barad Lab is a cryo-electron tomography and computational structural biology lab at Oregon Health & Science University 069