Announcing cryo-EM heterogeneity challenge #2, now dubbed the 2025 Community-Wide Assessment of Cryo-EM Heterogeneous Reconstruction Algorithms (CAHRA)! Join us for a webinar next Friday (Nov 14th) to learn more. Datasets already posted here: heterogeneity.notion.site/challenge #cryoem

New lab preprint! @zestytoast.bsky.social tagged a scarce mycobacterial protein in M. smegmatis with TwinStep but got… something? @kjamali.bsky.social's ModelAngelo built models & @martinsteinegger.bsky.social's FoldSeek IDed them as the biotin-containing MCC & LCC complexes 🧵 tinyurl.com/ukny4ptz

On a gruelling hunt for rare associated molecules in your #cryoEM particle stack and not sure where to look? Discover practical tips and tricks in our new case study using #CryoSPARC v4.7.1 where we find and refine a low-population interaction partner! guide.cryosparc.com/processing-d...

🚀 Introducing fully automated data processing for repeat-target #cryoEM. Using new tools in #CryoSPARC, it is now possible to obtain resolutions & map quality equal to or better than manual processing, with zero user intervention. Preprint: www.biorxiv.org/content/10.1...

End-to-end automation of repeat-target cryo-EM structure determination in CryoSPARC https://www.biorxiv.org/content/10.1101/2025.10.17.682689v1

Helical 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...

1/14 Happy (but mostly relieved) to share my dream project with @boudkerlab.bsky.social, now published in @natsmb.nature.com! We used evolution, protein engineering & cryoEM to uncover how ion coupling in glutamate transporters works, and how it evolved.🧵 Free article: go.nature.com/4oRUC1q

This one is a bit of a departure from the usual and definitely a work in progress! We found that by using ab initio reconstruction at very high res, in very small steps, we could crack some small structures that had eluded us - e.g. 39kDa iPKAc (EMPIAR-10252), below. Read on for details... 1/x

Advanced #cryoEM workflows are easy in #CryoSPARC: use the Low-Level Results Interface to combine upstream extracted particles with downstream pose and CTF information, use a volume result from an intermediate iteration of a refinement to create a mask, and more! guide.cryosparc.com/application-...

Happy to share a new preprint from the Clarke & Vallese (@fravallese.bsky.social) labs reporting #cryoem structures of two RBC stomatin complexes – with AQP1 & UT-B - continuing the SPFH theme from our recent vault preprint! This was a fun one and has been cooking for a while - read on for more! ⬇️

🧪 Skip the trial and error for structure determination of soluble proteins. Join the #webinar 10/8 for a gene-to-structure case study of CYP3A4, a 57 kDa cytochrome P450 monooxygenase, solved to 3.1 Å by #cryoEM. nimgs.zoom.us/webinar/regi...

Exciting work from the Franklin, @ox.ac.uk, and @diamondlightsource.bsky.social has led to a new method for imaging small proteins (<50 kDa) using cryoEM. By using bifunctional, bispecific nanobody scaffolds, the team have successfully solved the smallest protein structure to date (14 kDa).

Di-Gembodies (dimerized nanobodies) for improved and duplexed CryoEM of small and challenging targets! A collaboration of @cmd.ox.ac.uk, STRUBI, @diamondlightsource.bsky.social, @rosfrankinst.bsky.social Out now in Nature Chemical Biology @natchembio.nature.com www.nature.com/articles/s41...

Just published: Our paper on high-throughput analysis of cyclin docking interactions, led by the group of Norman Davey @icr.ac.uk and with some small-complex-plus-peptide #cryoEM by @natalia-mg.bsky.social from my lab. Congratulations, everyone! www.nature.com/articles/s41...

Flexibility can be frustrating when processing a #cryoEM dataset. If your target has a wobbly domain, check out our new case study on FaNaC1 for continuous heterogeneity tips in #CryoSPARC! guide.cryosparc.com/processing-d...

Get hands-on training on #cryofreezing, #DataAcquisition and more at EMBO Practical Course "Cryo electron microscopy and 3D image processing" in New Delhi, IN, 21 Feb–3 Mar 2026 Registration by 15 Sep Abstract submission by 30 Sep meetings.embo.org/event/26-cem... #cryoEM #EMBOCryo3D #EMBOevents 🧪

That's a wrap! The results of the first #cryoEM heterogeneity challenge are up on biorxiv! biorxiv.org/content/10.110

When particles have orientation bias, the resulting maps are often streaked along the missing directions. In this case study, we cover why orientation bias produces anisotropic #cryoEM maps and how you may be able to recover from it! guide.cryosparc.com/processing-d...

Link here! guide.cryosparc.com/processing-d...

Working with symmetric or pseudosymmetric particles in #cryoEM? This TRPV5 and CaM case study includes practical considerations for using symmetry relaxation and 3D classification when analyzing a pseudosymmetric particle in #CryoSPARC!

When I arrived to NYC as a postdoc, NYSBDG was my first local meeting, and I was blown way by the world-class quality of the science. It's a great opportunity to meet the local #structbio & #cryoem community, and it's coming up in two weeks, so register now at the eventbrite link below!

Looking for a deep dive into 2D classification in #cryoEM? These recent guide pages cover practical aspects & parameter choices when running these jobs in #CryoSPARC, along with the theory behind expectation maximization: guide.cryosparc.com/processing-d... and guide.cryosparc.com/expectation-...

1/x New story - the structure of the Vault cap, at 2.3Å! Matching a beautiful preprint from @sjorsscheres.bsky.social, we show that the cap of the vault particle has C13 symmetry, in contrast to the 39-fold symmetry of the body. Study lead by talented postdoc @huanli00.bsky.social from my group! ⬇️

Thank you to all the presenters and scientists from around the country who attended the LSI's 2025 #CryoEM Workshop and made the event such a successful hands-on learning experience! Thanks also to our event sponsors, SubAngstrom, @globusorg.bsky.social, @mitegen.com and @structurabio.bsky.social

Check out our latest study, led by grad student Ryan McCool @rmccool.bsky.social‬, in collaboration with Vaccine Company. We were able to stabilize EBV gB in the prefusion conformation, determine its cryo-EM structure to 3.1 A, and assess its immunogenicity in mice. www.biorxiv.org/cgi/content/...

EtfD links beta oxidation to OxPhos in mycobacteria - recent work suggests that targeting EtfD could shorten #tubeculosis treatment. But how does EtfD work? And how can you assay its activity? In his final PhD manuscript @courbongautier.bsky.social provides answers! www.biorxiv.org/content/10.1...

Excited to share our new @science.org paper! Led by postdocs Ruchao Peng and Xin Xu, we used cryo-EM/ET to reveal the influenza ribonucleoprotein complex structure and its strand-sliding mechanism for RNA synthesis, paving the way for new antivirals. www.science.org/doi/10.1126/...

Grappling with poorly-resolved ligand binding sites in #cryoEM maps? Check out our new case study on a peptide ligand-bound GPCR showing how practical tips and features in #CryoSPARC v4.7 improve locally refined map quality and reveal clearer ligand density! guide.cryosparc.com/processing-d...

Are you new to #CryoEM, or looking for a review of the basics? You might enjoy our TRPV1 case study! It covers preprocessing, particle curation, refinement, and more! You can also test your skills with the advanced exercises at the end of the study. guide.cryosparc.com/processing-d... #CryoSPARC

#CryoSPARC v4.7 is out! 🚀  Featuring a new automatic Micrograph Junk Detector that labels and rejects contaminants, new tools for curating subsets of particles, performance and stability fixes, and more! Full changelog: cryosparc.com/updates #cryoEM

There is an exciting opportunity available to work in the vibrant cryoEM community here in Toronto! 🇨🇦 Happy to field informal inquiries about the position or about uprooting and moving to Toronto as a recent Torontonian myself! Please share widely. jobs.utoronto.ca/job/Toronto-...

The third and final chapter of our webinar series “Cryo-EM: Back to Basics” is on demand. Hear from Giovanna about challenges in #cryoEM, how to overcome them. Catch all three chapters: Chapter 1: youtu.be/e8GyDe4_BAQ Chapter 2: youtu.be/2dBnPVkaoFs Chapter 3: youtu.be/kUGNSTGc8II

I’m delighted that we could contribute the #cryoEM data to this incredible antiviral discovery project from the group of @neytsjohan.bsky.social 💊 "A coronavirus assembly inhibitor that targets the viral membrane protein" www.nature.com/articles/s41... A huge congrats to everyone involved! 🎉

Learn principles of image processing to determine macromolecular structures by #cryoEM: Sign up for EMBO Practical Course on Image processing for cryo-electron microscopy in London, UK, 9–16 September Deadline: 25 April meetings.embo.org/event/25-cry... #EMBOcryoEM #EMBOevents 🧪

*Deadline extended* Applications for this year's #CryoEM Data Processing Workshop are due March 27! Don't miss this chance to learn about various approaches to deal with conformational/compositional heterogeneity. myumi.ch/lsi-cryo-2025 @jbquerido.bsky.social @shyamalm.bsky.social

We are thrilled to announce the 2025 EMBO practical course in cryo-em image processing, Birkbeck College, London, 9-16 Sept 2025. More info & apply: meetings.embo.org/event/25-cry... Organisers Giulia Zanetti & Helen Saibil. Beautiful image from co-organizer @carolynmoores1.bsky.social lab.

Join us this summer for U-M's 2025 #CryoEM Data Processing Workshop! In this hands-on workshop, participants will gain experience in various approaches to deal with conformational/ compositional heterogeneity. Apply by Mar 21: myumi.ch/lsi-cryo-2025 @jbquerido.bsky.social @shyamalm.bsky.social

We are very pleased to share our latest preprint on the architecture of the membrane complex of the type 7 secretion system involved in bacterial competition in B. subtilis. #CryoEM #microsky

We are hosting a cryo-EM grid nanofabrication workshop on 28 April 2025, as part of the Canadian Cryo-EM Nexus (ccemn.ca). Learn how to make holey gold or holey carbon grids in your own laboratory! Space is limited, so please apply at web.cvent.com/event/ee88ac...

Brush up on #cryoEM with CSO Giovanna Scapin, in #webinar series "Cryo-EM: Back to Basics". Topics include sample preparation & imaging, data collection & processing, and overcoming limitations, & live Q&A. Join us: https://nimgs.zoom.us/webinar/register/2917338518175/WN_drNIOTVaR7KMxS7-XmEHUg

1/ A new series of #CryoSPARC tutorial videos from this year’s S2C2 #cryoEM image processing workshop are now online! These videos will be interesting to all users and especially those newer to #cryoEM. www.youtube.com/playlist?lis...

Looking for a primer on why the contrast transfer function matters in #cryoEM? Have a look at our updated #CryoSPARC Guide pages on CTF estimation! We cover intuition, theory, job types and practical considerations: guide.cryosparc.com/processing-d...