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Posts by Lars Eicholt

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Our next speaker will be Timothy Fuqua @timothyfuqua.bsky.social with "The Evolution and Emergence of Regulatory DNA", 14th April, 5PM CET.
Sign-up here:
tinyurl.com/prose-seminar2

1 week ago 8 2 0 1
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Happy to announce that our paper on orphan gene evolution in bacteria dropped in PNAS yesterday!

This is a problem I've been thinking about since the start of my PhD. Very grateful for this journey, as well as All The Friends I Made Along the Way.

Also, Eid Mubarak to those who celebrate!

1 month ago 8 1 1 0
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Our next Talk will be "Protein Origami and the Hidden Rules of Functional Innovations"! March 11th, 5PM CET. Sign-up here: tinyurl.com/prose-seminar2

1 month ago 9 4 1 0
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Cryptocercus Genomes Expand Knowledge of Adaptations to Xylophagy and Termite Sociality Abstract. Subsociality and wood-eating or xylophagy are understood as key drivers in the evolution of eusociality in Blattodea (cockroaches and termites),

Jones et al. analyzed two high-quality genomes of the cockroach genus Cryptocercus, the sister group to all termites, revealing relaxed selection in both Cryptocercus and termites.

🔗 doi.org/10.1093/gbe/evag028

#genome #evolution #sociality

1 month ago 3 1 1 0
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Latest work! 🧬

We uncover how evolution of translation initiation factor 2 (IF2) extensions links translation to bacterial stress response. We map 7 structural architectures & show how terminal extensions are enriched in intrinsic disorder & phase-separation features.

Link: doi.org/10.64898/202...

2 months ago 25 13 2 0
A diagram of the evolution of whales, from land dwelling mammals to the ocean giants we know today.

A diagram of the evolution of whales, from land dwelling mammals to the ocean giants we know today.

Whale evolution makes me uncomfortable

2 months ago 9295 1322 474 265
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I can't believe this seminar's been running for a year now!

Our YouTube channel is now live—you can watch the recordings of genuinely some of the best molecular evolution talks on the internet.

tinyurl.com/ProSE-videos

(Maybe we should do a tier list soon...)

2 months ago 4 1 0 0
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Cryptocercus genomes expand knowledge of adaptations to xylophagy and termite sociality Abstract. Subsociality and wood-eating or xylophagy are understood as key drivers in the evolution of eusociality in Blattodea (cockroaches and termites),

🚨 New paper in GBE! 🚨
This study analyzes two high-quality Cryptocercus genomes, the sister group to all termites, to investigate the transition to subsociality and wood-feeding (xylophagy) in Blattodea. 🪳

Check it out here:
doi.org/10.1093/gbe/...

2 months ago 4 2 0 0

Thank you!

2 months ago 1 0 0 0
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InspectorORF: a tool for visualising Ribo-Seq and additional genomic or transcriptomic data AbstractMotivation. The advent of ribosome profiling (an adaptation of RNA sequencing) to determine the translatome, has led to a huge improvement in our u

Congratulations to Eilidh Ward (first author and PhD student co-supervised by co-authors Julie Aspden, David Westhead and yours truly) on this lovely contribution - a method to visually inspect reads from novel open reading frames: doi.org/10.1093/bioa...

2 months ago 5 2 0 0
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Reposting w/alt text.

Iranians are experiencing collective trauma. Thousands have been killed/injured, the economy is crippled & the threat of a wider conflict is real. It’s especially difficult for those living in Iran, as many have lost (or fear losing) loved ones. www.nature.com/articles/d41...

2 months ago 24 12 0 0

Slava is next! Also, check out the past seminars on Youtube. Link in the post below.

2 months ago 1 0 0 0
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Come one, come all to the first Protein Structure Evolution talk of the year (Feb 10)!

Click here to register if you like cool science: tinyurl.com/prose-seminar2

Jointly organized by
@lacholt.bsky.social, @caro-rocha.bsky.social, @claudiaalcar.bsky.social, @zachary-ardern.bsky.social and myself.

2 months ago 4 2 0 0
Graphical abstract of pre-print

Graphical abstract of pre-print

Does targeting enzymes and substrates in a condensate lead to rate enhancement? No. Here, we investigate how the condensate environment can inhibit an enzyme reaction.

Spoiler: Mass-transport limitations. We find a strong correlation between diffusion and reaction rates.

doi.org/10.64898/202...

2 months ago 49 21 4 2
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Degradation Determinants Are Abundant in Human Noncanonical Proteins and Minor Annotated Isoforms Abstract. The comprehensive characterization of human proteins, a key objective in contemporary biology, has been revolutionized by the identification of t

@ccasola.bsky.social, A. Owoyemi and @vakirlis.bsky.social test the hypothesis that many noncanonical proteins possess low stability in the cellular environment, finding that noncanonical proteins were enriched for degradation-related features.

🔗 doi.org/10.1093/gbe/evag009

#genome #evolution

2 months ago 4 2 0 0

I will never be able to unsee it again!

2 months ago 1 0 0 0

Calling all OrthoFinder users!

We’ve just released GLADE, a tool to infer gene gains, losses, duplications, and ancestral genomes across a phylogeny.

GLADE runs directly on OrthoFinder results.
www.biorxiv.org/content/10.6...
github.com/lauriebelch/...

(1/10)

2 months ago 103 48 1 2
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Ancient amino acid sets enable stable protein folds Early proteins likely arose from a chemically limited set of amino acids available through prebiotic chemistry, raising a central question in molecular evolution: could such primitive compositions yie...

Can proteins fold and function with half of the amino acid alphabet?
Using only 10 residues, we designed stable, mutation-resilient structures—no aromatics or basics involved.
A minimalist foundation for ancient biology and synthetic design. tinyurl.com/37t8br4v
#ProteinDesign #OriginsOfLife

5 months ago 25 11 1 0
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De novo genes arise from previously non-coding sequences. This evolutionary path — when randomly expressed sequences become folded and active proteins — challenges our understanding of genetic innovation. New Review by @bornberglab.bsky.social and @lacholt.bsky.social out now!

2 months ago 15 6 0 0
Pervasive translation of short open reading frames and de novo gene emergence in Arabidopsis Ancestrally non-genic sequences are now widely recognized as potential reservoirs for the de novo emergence of new genes. Across clades, some de novo genes were proven to have substantial phenotypic effects, and to contribute to the emergence of novel biological functions. Yet, still very little is known about the starting material from which de novo genes emerge, especially in plants. To fill this gap, we generated Ribosome Profiling data from the closely related species Arabidopsis halleri, A. lyrata and A. thaliana and characterized genome-wide patterns of translation across them. Synteny analysis revealed 211 Open Reading Frames (ORFs) that have emerged de novo within the Arabidopsis genus and already exhibit signs of active translation. Most of these de novo translated ORFs were species- and even accession-specific, indicating their transient nature, with patterns of polymorphism consistent with neutral evolution in natural populations. They were also significantly shorter and less expressed than conserved Coding DNA Sequences (CDS), and their GC content increased with phylogenetic conservation. While most of them were located in intergenic regions and are thus newly discovered, 34 were previously annotated as CDS in at least one genome, and are promising putative genes. Our results demonstrate the abundance of translation events outside of conserved CDS, and their role as starting material for the emergence of novel genes in plants. ### Competing Interest Statement The authors have declared no competing interest. Université de Lille, https://ror.org/0546v5182

🧬 What does the starting material from which genes could emerge #denovo look like?
🌱 We used #RiboSeq to investigate the landscape of translated de novo ORFs in 3 #Arabidopsis species, and how they might be linked to gene birth!

📝 Check out our preprint here:
doi.org/10.1101/2025...

3 months ago 9 6 1 0

Read-only link here: rdcu.be/e09SM

2 months ago 1 0 0 0

Check out our new review in Nature Reviews Genetics on de novo emerged genes and proteins. How they emerge, are lost and persist - and how de novo emerged proteins relate to randomized proteins! @bornberglab.bsky.social www.nature.com/articles/s41...

2 months ago 60 28 3 2
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Directors

The Max Planck Institute for Evolutionary Biology in Plön, Germany, seeks expressions of interest for open Max Planck Director positions. For details: http://www.evolbio.mpg.de/3856225/Directors #job

3 months ago 11 26 0 0
Fullfabric :: AITHYRA-CeMM PhD

I'm recruiting 1-2 grad students through the AITHYRA-CeMM PhD program! Applications are due January 30th. This is a fully-funded PhD program, combining AI and biology to advance biological discovery. Please forward to anyone who may be interested! You can apply here: apply.cemm.at

3 months ago 6 10 1 0
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Inferring fungal cis-regulatory networks from genome sequences via unsupervised and interpretable representation learning Abstract. Gene expression patterns are determined to a large extent by transcription factor (TF) binding to noncoding regulatory regions in the genome. How

Alan's elegant work on evolutionary contrastive learning for understanding promoter regulatory logic out in @GeneticsGSA! academic.oup.com/genetics/art... Was really fun having him visit my lab for his sabbatical & work on this. New bucket list item: write a first-author paper as a PI!

3 months ago 9 1 0 0
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Erich traveled to Berlin for the Schering Prize award ceremony, where he delivered the laudatio for Agnes Toth-Petroczy, this year’s recipient of the Schering Young Investigator Award. Warm congratulations to her!

Photo credits: Schering Stiftung/Michael Setzpfandt

4 months ago 4 1 0 0
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Happy to share that our work on HLp, a bacterial histone from Leptospira perolatii, is now published in Nature Communications 🎉

In this study, we show that HLp forms stable tetramers that wrap ~60 bp of DNA, revealing a distinct histone–DNA organization in bacteria.

www.nature.com/articles/s41...

4 months ago 54 16 2 1
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Open Positions – GEvol – DFG SPP 2349 Open Positions – GEvol – DFG SPP 2349

Postdoctoral Research Associates are sought for the GEvol project on evolutionary genomics. Candidates should have programming and data analysis skills. More info: https://g-evol.uni-muenster.de/open-positions/ #postdoc

4 months ago 1 9 0 0
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Ending my PhD with a bang:
Face-to-face histones are important organizers of archaeal chromatin alongside classical histones.

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

4 months ago 20 4 1 1
GBE | De Novo Gene Emergence: Summary, Classification, and Challenges of Current Methods

GBE | De Novo Gene Emergence: Summary, Classification, and Challenges of Current Methods

Grandchamp, @drdomain.bsky.social et al. publish a new Review on commonly used methods for de novo gene detection, address the limitations of nomenclature and detection methods, and establish a de novo gene annotation format to standardize reporting

🔗 doi.org/10.1093/gbe/evaf197

#genome #evolution

5 months ago 14 6 1 1