Andrea Dallapè
cryoEM enthusiast, cryoET enthusiast soon.
Last months as Research Assistant in WilsonLab, University of Hamburg, SPA cryoEM & ribosomes. Love Heterogeneity Analysis and continuous movements.
Water diviner, always!
- Reposted by Andrea Dallapè💪 NEW VIDEO: Flying over the A-band of an atomic-scale model of a vertebrate muscle sarcomere. Let's explore the molecular mechanics that make your muscles work. Rendered using @bradyajohnston.bsky.social 's molecular nodes Model based on the incredible work of the @raunser-lab.bsky.social lab
- Reposted by Andrea DallapèExcited to share this detailed biophysical study of #PhaseSeparation in the Pyrenoid, an algal microcompartment that fixes a third of the Earth's #CO2 🌏. We combine methods across scales, in vitro 🧪 and in vivo 🦠 Thanks for the very fun collaboration! 🤗 #PlantScience 🌾 #TeamTomo 🔬 #LivingPhysics 🧬🧶
- How does molecular valency shape condensate assembly and function? We used the CO2-fixing organelle in algae—the pyrenoid—to find out… 🧵 Preprint here!: www.biorxiv.org/content/10.6... @cellarchlab.com @phaips.vd.st @biologyatyork.bsky.social #Rubisco #PhaseSeparation #Condensates #Pyrenoid
- Reposted by Andrea Dallapè🚀 CryoSPARC v5.0 BETA is here! We’re excited to deploy another major #CryoSPARC release to help enable and accelerate #cryoEM data analysis. v5 has a redesigned underlying software system and many new features - highlights in thread! Full changelog: cryosparc.com/updates/v5.0.0
- Reposted by Andrea DallapèCheck out our new preprint! We uncover the full molecular mechanism of rotavirus membrane penetration and cytosolic escape using cryo-ET, live-cell imaging, and single-molecule assays. (1/3) 🔗 biorxiv.org/content/10.6...
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- Reposted by Andrea DallapèLLOMe 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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- Reposted by Andrea Dallapè"Use it or lose it." This is great advice for exercise, but when cells need to slow down or go dormant, they need to store ribosomes to recover growth in the future. They use hibernation factors to do this. Here is our latest story on how archaea hibernate ribosomes (1/7): doi.org/10.64898/202...
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- Reposted by Andrea DallapèWe are thrilled to share our latest work uncovering the mechanistic basis of target-directed microRNA degradation (TDMD). This work was driven by @jakobfarnung.bsky.social and @elenaslo.bsky.social in a fantastic collaboration with Brenda Schulman's lab. tinyurl.com/E3TDMD (1/5)
- Reposted by Andrea DallapèWe resolved the molecular architecture of a condensate—inside cells. 🤯 By combining in situ cryoET with multiscale simulations, we show how a single point mutation modifies molecular interactions, shifts the condensate’s material properties, and alters its biological function. Preprint 👇
- We are excited to share our new preprint which is now available to read on biorXiv: doi.org/10.64898/202... 🎉🎉🎉
- Reposted by Andrea DallapèHappy to finally share the amazing results of our long-term collaboration with Karin Reinisch’s lab on how bridge lipid-transfer proteins (BLTPs) cooperate with partner proteins to orchestrate lipid delivery. A quick thread (1/7) www.biorxiv.org/content/10.6...
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- Reposted by Andrea Dallapè❄️ With all the snow outside, I felt like sharing a cryo tomogram: A neuronal synapse, captured by cryo-ET at the moment a neurotransmitter-filled vesicle fuses at the active zone. Fusion was triggered optogenetically and arrested by plunge freezing. More details: www.nature.com/articles/s41...
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- Reposted by Andrea DallapèStructural reorganization underlying stress-induced cytoplasmicsolidification in yeast biorxiv.org/content/10.64898/20…
- Reposted by Andrea DallapèLatest preprint from our lab reports that the distinct pH of anterograde (less acidic) and retrograde (more acidic) lysosomal vesicles in the axon depends on assembly of the V1 and V0 domains of the vacuolar H+ ATPase, mediated by the metazoan RAVE complex www.biorxiv.org/content/10.6...
- Reposted by Andrea DallapèIntrigued 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.
- RNA decay via the nuclear exosome is essential for piwi-mediated transposon silencing biorxiv.org/content/10.64898/20…
- Reposted by Andrea Dallapè⚡️Mitochondria make ATP, the energy that powers life. But in neurons, with axons up to a meter long, how do these tiny power plants stay functional in the right places? We went looking. 1/n www.biorxiv.org/content/10.6...
- Reposted by Andrea Dallapèvery unusual - a tRNA regulated anion channel
- Structural insights into the coordinated regulation of the SLAH family in Arabidopsis thaliana pubmed.ncbi.nlm.nih.gov/41407702/ #cryoEM
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- Reposted by Andrea Dallapè🔬 Just out in @NatureComms! Using cryo-CLEM and cryo-ET, we reveal the unique ultrastructure of dopaminergic varicosities in the striatum. Amazing collaboration with @davip-bdx.bsky.social and Etienne Herzog @iins-bordeaux.bsky.social Congratulations to Paul and Robin for this fantastic work! 🎉
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- Reposted by Andrea DallapèIsoNet2 determines cellular structures at submolecular resolution without averaging biorxiv.org/content/10.64898/20…
- Reposted by Andrea Dallapè#cryoEM 🧪⚛️ Lena’s paper on imaging thick biological sections with STEM is finally published! We started this work almost 10 years ago. After Lena passed in 2023, I spent much of my sabbatical working with Yue and Steve to wrap this up. Also learned a lot about TEM vs STEM dose efficiency
- Tilt-corrected bright-field scanning transmission electron microscopy (tcBF-STEM) offers enhanced contrast and dose efficiency for cryo-EM in thick biological specimens. www.nature.com/articles/s41...
- Reposted by Andrea Dallapè✨New preprint! 🧵1/4 Excited to share our work on AI-guided design of minimal RNA-guided nucleases. Amazing work by @petrskopintsev.bsky.social @isabelesain.bsky.social @evandeturk.bsky.social et al! Multi-lab collaboration @banfieldlab.bsky.social @jhdcate.bsky.social @jacobsenucla.bsky.social🧬 🔗👇
- Reposted by Andrea DallapèOur Method of the Year 2025 is...drumroll please...EM-based connectomics!! Our Editorial introduces our choice and highlights six Comments and other related content in this special issue. Please join us in celebrating EM-based connectomics! 🎉🧠🔬 www.nature.com/articles/s41...
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- Reposted by Andrea DallapèGTPBP1 is a GTPase implicated in neurodevelopment. Our cryo-EM maps show GTPBP1 delivering tRNA to ribosome. Due to delayed GTPase dissociation, mRNA decoding is more stringent than with bona fide delivery factor eEF1A. Congrats to Denis Susorov and collab with Pestova lab! tinyurl.com/3smdvt3v
- Reposted by Andrea DallapèCryoET of microbes inside an animal organ? Yes it’s possible! Check out our new preprint showing how we did it! What an amazing collaboration with amazing scientists who made this possible!
- Nanoscale imaging of native symbiotic animal tissue using amultimodal large volume imaging pipeline for cryo-electrontomography biorxiv.org/content/10.1101/202…
- Reposted by Andrea DallapèUsing "in extracto cryo-EM", we visualize ribosomes in mammalian lysates, including RRL. "Hibernating" ribosomes carry an extended set of proteins that protect functional centers. These include elongation factor eEF2, LARP1 implicated in mTOR signaling, eIF5A etc. www.biorxiv.org/content/10.1...
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- Reposted by Andrea DallapèRibosomal RNA (rRNA) genes are found in hundreds of copies in the human genome. Do sequence variations in these paralogs change the ribosome function? Yes! I am excited to share our new preprint @mbarnalab @jkpritch in collaboration with Calico: www.medrxiv.org/content/10.1... 1/8
- Reposted by Andrea Dallapè#MD blind predictions of water/ions around Tetrahymena ribozyme #RNA matched cryo-EM data better than our baselines! Congrats #CASP16 + @rachael-kretsch.bsky.social + 23 brave groups. Still a ways to go — time for #DeepLearning of water? Community paper: doi.org/10.1002/prot...
- Reposted by Andrea DallapèNew paper alert! Scientists in Clemens Plaschka’s lab at the IMP and @juliusbrennecke.bsky.social's lab at @imbavienna.bsky.social solved a decade-old puzzle, uncovering how the information molecule mRNA travels from the cell’s nucleus to its periphery. More: bit.ly/4nHcvys
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- Reposted by Andrea DallapèAs ever, beautiful #cryoEM work from the lab of Hong Zhou with field-defining insights using #cryoET: “Kiss-shrink-run” unifies mechanisms for synaptic vesicle exocytosis and hyperfast recycling | Science www.science.org/doi/10.1126/...
- Just some 3D classification 🤩 WOW. Congratulations
- Check out our preprint! With new molecular mechanisms, 140 subtomogram averages, and ~600 annotated cells under different conditions, we @embl.org were able to describe bacterial populations with in-cell #cryoET. And there’s a surprise at the end 🕵️ www.biorxiv.org/content/10.1... #teamtomo
- Reposted by Andrea DallapèVery excited that my final postdoctoral work is now online in Cell @cellpress.bsky.social. www.sciencedirect.com/science/arti... Using 16 (!) cryo-EM structures, we uncovered how the three proteins coronin, cofilin and AIP1 work together to rapidly disassemble actin filaments.
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- Wait uh, what?? 🤩
- Ballistic Microscopy (BaM) www.biorxiv.org/content/10.1101/2025.10.07.681030v1 #cryoEM
- Reposted by Andrea DallapèThis year’s #NobelPrize in Physiology or Medicine has been awarded to three scientists for discovering how the immune system distinguishes friend from foe. scim.ag/3Wt5rdi
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- Reposted by Andrea DallapèHelical Reconstruction of Amyloids in cryoSPARC? We present guidelines, limitations & future perspectives for processing amyloids in cryoSPARC @structurabio.bsky.social. Great collaboration of the Kelly Lab and @landerlab.bsky.social #cryoEM #amyloid www.biorxiv.org/content/10.1...
- Reposted by Andrea DallapèMuyuan Chen has turned structural biology into an immersive experience with his new video game Meowtabolism, now available on Steam. Try the demo here: store.steampowered.com/app/4045010/... Give Muyuan feedback: steamcommunity.com/app/4045010 #ScienceGaming #StructuralBiology #CryoEM #STEMOutreach
- This single author paper has to be seen to be believed.... My 'GIF' does it no justice Chen, M. (2023) ‘Rendering protein structures inside cells at the atomic level with Unreal Engine’, bioRxiv. doi.org/10.1101/2023...
- Reposted by Andrea DallapèHistorically, viruses were thought to primarily use host cell's translational machinery. New work from @harvardcellbio.bsky.social faculty Amy Lee reveals that a giant DNA virus encodes its own IF4F initiation complex, suggesting an unexpected evolutionary innovation. www.biorxiv.org/content/10.1...
- Reposted by Andrea DallapèInitial attempt at replicating in relion (parameters in next post). This is for Aca2-RNA, using a 100k subset of the 2D-classified particles (no prior 3D cleanup). A 1-class ab initio in relion, then local refinement in relion (1.8deg searches+blush) gives a nominally 3.3Å map; 3.5 Å w/out blush.
- Reposted by Andrea DallapèTime for a thread!🧵 How different is the molecular organization of thylakoids in “higher” plants🌱? To find out, we teamed up with @profmattjohnson.bsky.social to dive into spinach chloroplasts with #CryoET ❄️🔬. Curious? ..Read on! #TeamTomo #PlantScience 🧪 🧶🧬 🌾 elifesciences.org/articles/105... 1/🧵
- Reposted by Andrea DallapèHuntingtin binds and bundles F-actin! Thrilled to team up with the Humbert (Sorbonne Université) and Song (KAIST) labs on this discovery. We had a blast doing cryo-ET on this unexpected complex — and now so many new questions lie ahead! #TeamTomo #CryoET #HTT #actin doi.org/10.1126/scia...
- Reposted by Andrea DallapèEver wondered how to position organelles in bacteria? Wonder no more! Happy to have contributed to this fantastic story from @cellforganized.bsky.social' lab. The avenues this opens in the synthetic biology space are enormous! Movie: Carboxysomes positioned in E. coli! Preprint: shorturl.at/D6xVg
