Luigi Scietti
luigiscietti.bsky.social
Luigi Scietti
@luigiscietti.bsky.social
Scientist interested in #proteinexpression, #biochemistry, #biophysics and #structuralbiology (X-ray crystallography and #cryoEM)
coordinator of the biochemistry and structural biology unit at the European Institute of Oncology (IEO)
Reposted by Luigi Scietti
🚀 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...
October 20, 2025 at 2:32 PM
Reposted by Luigi Scietti
📢 New preprint:
Experiment-guided AlphaFold3 resolves accurate protein ensembles.
doi.org/10.1101/2025...

AlphaFold3 is incredible, but has crucial limitations: it typically collapses to a single conformation, ignoring the inherent dynamics of proteins. And it can be wrong. Here's a solution. 🧵👇
October 18, 2025 at 6:59 PM
Reposted by Luigi Scietti
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).
August 18, 2025 at 3:27 PM
Reposted by Luigi Scietti
Amazing new paper from Clair Baldock's lab resolves the collagen VI microfibril structure by cryo-EM to reveal a cysteine-rich coiled-coil crucial for heterotrimerization & microfibril assembly. The structure also reveals a hotspot of collagen VI muscular dystrophy mutations that disrupt assembly.
Collagen VI microfibril structure reveals mechanism for molecular assembly and clustering of inherited pathogenic mutations
Nature Communications - Collagen VI microfibril cryo-EM structure resolves a cysteine-rich coiled-coil important for heterotrimerization and microfibril assembly, reveals a hotspot of collagen VI...
rdcu.be
August 15, 2025 at 6:32 AM
Reposted by Luigi Scietti
We have written up a tutorial on how to run BindCraft, how to prepare your input PDB, how to select hotspots, and various other tips and tricks to get the most out of binder design!

github.com/martinpacesa...
June 30, 2025 at 7:45 PM
Reposted by Luigi Scietti
🚀 Excited to release BoltzDesign1!

✨ Now with LogMD-based trajectory visualization.
🔗 Demo: rcsb.ai/ff9c2b1ee8
Feedback & collabs welcome! 🙌

🔗: GitHub: github.com/yehlincho/Bo...
🔗: Colab: colab.research.google.com/github/yehli...
@sokrypton.org @martinpacesa.bsky.social
June 3, 2025 at 1:31 AM
Reposted by Luigi Scietti
New collaborative paper between JPArmache and Bowman (@bowmanlab-jhu.bsky.social) labs show how the yeast CHD1 chromatin remodeler depends on activator elements to distort nucleosomal DNA. This explains how the NegC inhibitor blocks activity. www.nature.com/articles/s41...
A competitive regulatory mechanism of the Chd1 remodeler is integral to distorting nucleosomal DNA - Nature Structural & Molecular Biology
Nodelman, Folkwein et al. define a regulatory region in Chd1 containing adjacent inhibitor and activator elements that compete for binding to the remodeler ATPase. The competition between these elemen...
www.nature.com
May 30, 2025 at 2:35 PM
Reposted by Luigi Scietti
Very excited that our work describing hu.MAP3.0 is published in @molsystbiol.org. Here we use machine learning to integrate >25k mass spectrometry experiments to place ~70% of human proteins into 15k protein complexes.

www.embopress.org/doi/full/10....
hu.MAP3.0: atlas of human protein complexes by integration of >25,000 proteomic experiments | Molecular Systems Biology
imageimagehu.MAP3.0 integrates mass spectrometry experiments to identify human protein complexes. Using this resource, this study characterizes covariation of complexes, identifies mutually exclusive ...
www.embopress.org
May 29, 2025 at 11:24 PM
Amazing #cryoEM structures and incredible community here at @cniostopcancer.bsky.social for the “machines acting on DNA and RNA” congress!
May 28, 2025 at 12:53 PM
Super happy to share the final shape of our work describing the molecular #structure and #enzymatic mechanism of human #collagen #galactosyltransferase #GLT25D1 published in @natcomms.nature.com. Want to know how collagen become sweet? read the 🧵 below!
April 22, 2025 at 9:34 AM
Reposted by Luigi Scietti
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.
Image processing for cryo-electron microscopy
Cryo electron microscopy (cryo EM) is a major structural biology method for studying macromolecular complexes and cellular structures in their native states. Stable high resolution cryo microscopes, …
meetings.embo.org
March 18, 2025 at 7:06 PM
Reposted by Luigi Scietti
This is a masterpiece ! #cryoEM

Structures of H2A.Z-associated human chromatin remodelers SRCAP and TIP60 reveal divergent mechanisms of chromatin engagement

www.biorxiv.org/content/10.1...
March 4, 2025 at 8:46 AM
Reposted by Luigi Scietti
Did you make our cryo-EM webinar last week? Dive into pre-processing, how to interpret 2D classes, 3D reconstructions from the initial map to final structure with CSO Giovanna Scapin.

Catch it here: youtu.be/2dBnPVkaoFs

Sign up for Overcoming Limitations, on 3/25: nimgs.zoom.us/webinar/regi...
March 4, 2025 at 6:34 PM
Reposted by Luigi Scietti
📢 Registration is now open for 'Wellcome-MRC Cryo-EM in Structural Biology 2025'!

📅 Join us online March 3-7 at @diamondlightsource.bsky.social @universityofleeds.bsky.social for lectures & demos in #CryoEM & #CryoET: sample prep, SPA, model building & more!🧬

🔗 www.diamond.ac.uk/Instruments/...
Wellcome-MRC Cryogenic Electron Microscopy in Structural Biology 2025 - - Diamond Light Source
eBIC (Diamond light source) has partnered with the Astbury Biostructure Lab (University of Leeds), the Scottish Centre for Macromolecular Imaging (University of Glasgow), Midlands Regional Cryo-EM Fac...
www.diamond.ac.uk
February 18, 2025 at 10:00 PM
Reposted by Luigi Scietti
Been thinking about creating a collection of good protein structure figures, as inspiration for my own work.

#1 www.nature.com/articles/s41...
March 3, 2024 at 8:37 AM
Reposted by Luigi Scietti
I’m happy to share gapTrick, an AlphaFold2-based tool for characterising protein-protein complexes

www.biorxiv.org/content/10.1...
gapTrick - Structural characterisation of protein-protein interactions using AlphaFold with multimeric templates
The structural characterisation of protein-protein interactions is a key step in understanding the functions of living cells. Models of protein complexes provide important insights into interaction me...
www.biorxiv.org
February 6, 2025 at 10:07 AM
Reposted by Luigi Scietti
#SIRT7 is a histone deacetylase with highly specific activity on #chromatin substrates.
We just published mechanism-based #cryoEM structures of #SIRT7 on nucleosomes to understand its activity 👇
www.nature.com/articles/s41...
(1/8) #ChemBio #ChemSky
February 4, 2025 at 1:13 PM
Cool event, great people! Thanks for putting us together @fornerislab.bsky.social and @thermofishersci.bsky.social!
The lecture room is really packed for this @thermofishersci.bsky.social #cryoem roadshow in Pavia today!
January 29, 2025 at 9:00 PM
Reposted by Luigi Scietti
Exciting new preprint alert! 🚨 The Collepardo lab, teaming up with Huabin Zhou and the Rosen lab we took a deep, high-resolution look into chromatin condensates! [1/6] #Chromatin #MD @rcollepardo.bsky.social @juliamaristany.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org
January 22, 2025 at 5:31 PM
Truly honoured to be the first user of such an amazing platform! For sure a reference point for all the Italian community. Exciting time ahead! ❄️🚀
A real milestone for the local community, today we celebrate the beginning of service provision by @humantechnopole.bsky.social National Facility for Structural Biology. Lucky to have a smiling @luigiscietti.bsky.social (in pic with our Gaetano D'Urso) from IEO as first user to the Cryo-EM Unit.
January 14, 2025 at 10:17 AM
Reposted by Luigi Scietti
Work led by graduate student @trinitycookis.bsky.social and coauthors Alexandria Lydecker, @paulsauer.bsky.social, and @kasinath-lab.bsky.social is out today where we looked at the inhibition of PRC2 by histone PTMs associated with regions of active transcription.

www.nature.com/articles/s41...
Structural basis for the inhibition of PRC2 by active transcription histone posttranslational modifications - Nature Structural & Molecular Biology
Structures reveal that histone H3K36me3 and H3K4me3 modifications reduce Polycomb repressive complex 2 (PRC2) function through the inhibition of histone tail engagement and antagonistic binding to the...
www.nature.com
January 8, 2025 at 1:36 AM
Reposted by Luigi Scietti
Towards 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🧵👇
January 6, 2025 at 11:19 AM
Reposted by Luigi Scietti
More than 1'800 tomograms available for the community. Towards visual proteomics using our favorite organism Chlamy!

Check out the preprint: www.biorxiv.org/content/10.1...

Find it on EMPIAR (11830) and fully annotated on the CZI data portal: cryoetdataportal.czscience.com

#TeamTomo
Towards community-driven visual proteomics with large-scale cryo-electron tomography of Chlamydomonas reinhardtii
In situ cryo-electron tomography (cryo-ET) has emerged as the method of choice to investigate structures of biomolecules in their native context. However, challenges remain in the efficient production...
www.biorxiv.org
December 29, 2024 at 11:47 AM
Reposted by Luigi Scietti
Safer, nonradioactive staining alternatives for electron microscopy are introduced, simplifying sample preparation, reducing costs and making structural biology more accessible to researchers globally #NegativeStaining #ElectronMicroscopy doi.org/10.1107/S205...
December 17, 2024 at 5:13 PM