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Posts by Noah Holzleitner

1/28 How do you optimize a dynamic protein property that emerges from multiple states? Our finally published paper in @NatureComms takes on one of the hardest problems in protein engineering with phage assisted evolution: evolving allosteric switches🧵

6 days ago 18 10 2 3
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mosaic/examples/proteina.py at main · escalante-bio/mosaic composite-objective protein design. Contribute to escalante-bio/mosaic development by creating an account on GitHub.

Added a JAX translation of the excellent Proteina-Complexa (from nvidia, @kdidi.bsky.social , @karstenkreis.bsky.social ) to mosaic. You can do beam search with any mosaic loss (e.g. protenix + mpnn) and JAX with generate efficient GPU/TPU code.

3 weeks ago 13 6 1 0
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Postdoctoral position (scholarship) in metabolic-epigenetic interplay | Karl Carlström 📣 📣 📣 Job alert!!! Join us at Karolinska Institutet We are looking for a postdoc to the Carlström lab curious to dissect metabolic and epigenetic interplay using iPSCs and animal models coupled with...

🚨🚨🚨Job alert
We are looking for postdoc joining our lab. If you are interested in subcellular distribution of proteins using iPSC and animal models in combination with leading genome engineering tools, check this add out!!
🧠🧬🔬🧫💊

www.linkedin.com/posts/karl-c...

3 weeks ago 0 1 0 0
ZeroFold: Protein-RNA Binding Affinity Predictions from Pre-Structural Embeddings

ZeroFold: Protein-RNA Binding Affinity Predictions from Pre-Structural Embeddings

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ZeroFold: Protein-RNA Binding Affinity Predictions from Pre-Structural Embeddings [new]
Leverages pre-structural embeddings that capture RNA flexibility for direct, sequence-based affinity prediction via cross-modal attention, bypassing structural data.

3 weeks ago 0 1 0 0
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New OpenFold3 preview out! (OF3p2)

It closes the gap to AlphaFold3 for most modalities.

Most critically, we're releasing everything, including training sets & configs, making OF3p2 the only current AF3-based model that is functionally trainable & reproducible from scratch🧵1/9

1 month ago 245 91 1 2
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Teaching generative models to hallucinate There are currently two main approaches to computational protein binder design: optimization (exemplified by BindCraft) and generative models (e.g. BoltzGen). A design campaign using either method l...

New post: blog.escalante.bio/teaching-gen.... You can massively improve in silico metrics for BoltzGen using standard post-training techniques (with a structure model as your reward function). If this holds up (no wetlab testing yet!) you could get binders in seconds rather than hours...

1 month ago 18 5 1 0
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Interested in gaining research experience, and curious about genome editing tool development and their application to treat human diseases? 🧬 🧫
We are hiring!! Join us at Mass General Hospital in Boston! 📣
massgeneralbrigham.wd1.myworkdayjobs.com/MGBExternal/...

1 month ago 0 1 1 0
Where next for structural bioinformatics?

I wrote a blog post about the future of structural bioinformatics.

Where to go after AlphaFold? How do we avoid the field becoming a load of half-baked LLMs?

Let me know what you think.

jgreener64.github.io/posts/struct...

6 months ago 53 16 4 2
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We built DNA scaffold crystals that can be reprogrammed to host different guest proteins for X-ray structure determination — no new crystallization screen required. This animation shows a guest protein (glowing) seeking its designed binding site inside the crystal lattice. shorturl.at/DANdc

1 month ago 23 5 2 2
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First preprint of the @pollyfordyce.bsky.social and @dunnlab.bsky.social collaboration! We used high-throughput microfluidics for sequence-strength mapping at the single-molecule level. Our new tech allowed us to discover a fundamental nonequilibrium property of multivalent systems. 1/13

1 month ago 17 9 1 1
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🧬 RNAMed is hiring!

Apply for one of 11 fully funded PhD positions in RNA medicine and work with leading RNA experts in an international, interdisciplinary environment.

📅 Deadline: 24 March 2026

More info & apply:
lnkd.in/eX7fQcJi

1 month ago 0 3 0 2

Wow congrats to the authors this is truly impressive

1 month ago 2 2 0 0
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Looking for a truly unique PhD programme on RNA drugs and therapeutics? We have just opened the call for the second cohort of RNAmed-Future leaders in RNA-based medicine. More details under www.rnamed.de Please spread the word.

1 month ago 14 19 0 2

A detailed comparison of de novo designed proteins by NMR finally puts to rest the idea that structure prediction confidence metrics have any correlation with local flexibility

2 months ago 10 3 0 0
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AlphaFast: High-throughput AlphaFold 3 via GPU-accelerated MSA construction [new]
...is a drop-in framework integrating GPU-accelerated MMseqs2 to overcome the CPU-bound MSA generation bottleneck in AlphaFold 3.

2 months ago 2 1 0 0
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if you don't like the huge extended helices or alpha solenoid proteins you're getting from hallucination-based protein design methods (bindcraft, mosaic, etc), increasing the scale of the initial sequence noise (typically Gumbel) increases funkiness without hurting final metrics like ipTM

2 months ago 21 2 1 0

The fitness landscapes of binders targeting protein surfaces that are evolutionarily predisposed to engage in PPIs is much narrower and deeper than those that target surfaces with no known interacting proteins. This might be b/c random binding events is bad, and selected against

2 months ago 23 5 1 0
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🎉🎉 Our paper on temperature-dependent protein control using AsLOV2 variants is now published at @natchembio.nature.com: www.nature.com/articles/s41... including some new insights from extend variant characterizations.

2 months ago 18 12 1 0
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A small polymerase ribozyme that can synthesize itself and its complementary strand The emergence of a chemical system capable of self-replication and evolution is a critical event in the origin of life. RNA polymerase ribozymes can replicate RNA, but their large size and structural ...

How could a simple self-replicating system emerge at the origins of life? RNA polymerase ribozymes can replicate RNA, but existing ones are so large that their self-replication seems impossible. Could they be smaller?

Excited to share our latest work in @science.org on a new small polymerase.
1/n

2 months ago 500 210 10 28
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Bluesky Map Interactive map of 3.4 million Bluesky users, visualised by their follower pattern.

I made a map of 3.4 million Bluesky users - see if you can find yourself!

bluesky-map.theo.io

I've seen some similar projects, but IMO this seems to better capture some of the fine-grained detail

2 months ago 7238 2166 660 4554
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Introducing The Structural History of Eukarya (SHE): The first proteome-scale phylogeny constructed entirely from 3D structure.
We computed 300 trillion alignments across 1,542 species to map the tree of life. 🧵👇 (1/5)

2 months ago 85 40 2 0
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Programmable genome editing in human cells using RNA-guided bridge recombinases Site-specific insertion of gene-sized DNA fragments remains an unmet need in the genome editing field. IS110-family serine recombinases have recently been shown to mediate programmable DNA recombinati...

🧬🌉Online @science.org Programmable genome editing in human cells using RNA-guided bridge recombinases | Science www.science.org/doi/10.1126/...

2 months ago 39 13 1 0
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🗓️ Save the Date!
The 5th European RosettaCon – Crossing Boundaries with Protein Design will take place in Lisbon, Portugal 🇵🇹
🗓️ October 28–30, 2026
Join the protein design community for an inspiring scientific meeting at the intersection of innovation and design.

2 months ago 8 5 1 1

Does the noncoding genome actually carry more genetic information than coding seqs? Motivated by this question we mutated every bp in the 10kb MYC locus. Results are even more exciting: Decoding the MYC locus reveals a druggable ultraconserved RNA element www.biorxiv.org/content/10.6...

2 months ago 127 46 4 6
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Multiple protein structure alignment at scale with FoldMason Protein structure is conserved beyond sequence, making multiple structural alignment (MSTA) essential for analyzing distantly related proteins. Computational prediction methods have vastly extended ou...

FoldMason is out now in @science.org. It generates accurate multiple structure alignments for thousands of protein structures in seconds. Great work by Cameron L. M. Gilchrist and @milot.bsky.social.
📄 www.science.org/doi/10.1126/...
🌐 search.foldseek.com/foldmason
💾 github.com/steineggerla...

2 months ago 301 147 4 3
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China’s innovation in translational medicine: rethinking early-stage clinical development - @caidyacro.bsky.social go.nature.com/4agbEkG

2 months ago 2 1 0 0

Neat paper! Boosting to the MP feed 🧬

2 months ago 9 3 2 0
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EDEN: a family of genomic language models trained on up to 9.7 trillion nucleotides from @basecamp-research.bsky.social's BaseData can design large serine recombinases, bridge recombinases, and antimicrobial peptides.

www.biorxiv.org/content/10.6...

Happy to have played a small part in this!

3 months ago 18 5 0 0
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Computational design of conformation-biasing mutations to alter protein functions Conformational biasing (CB) is a rapid and streamlined computational method that uses contrastive scoring by inverse folding models to predict protein variants biased toward desired conformational sta...

Can we design mutations that bias proteins towards desired conformational states?

Today in @science.org, we introduce Conformational Biasing (CB), a simple and scalable computational method that uses contrastive scoring by inverse folding models to identify conformation-biasing mutations.

3 months ago 119 38 1 3
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1/ Check out our newest paper where we ask: How fast can we experimentally discover binders from scratch?

And we mean scratch: a blinded study.

TLDR: 26 days. And the binders work…and led to new cancer biology.

We’re coming for you AI….

chemrxiv.org/engage/chemr...

3 months ago 41 11 3 1