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Jens Hör

@jenshoer

Molecular Principles of RNA Phages | Junior Professor @uni-wuerzburg.de | Group Leader @helmholtz-hiri.bsky.social

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27.12.2023
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Latest posts by Jens Hör @jenshoer

Captain Haddock looking very frazzled, saying, “What a week, huh?”
Tintin leans into the frame and says, “Captain, it’s Wednesday.”
Snowy aka Milou is very excited about the drink he has found.

Captain Haddock looking very frazzled, saying, “What a week, huh?” Tintin leans into the frame and says, “Captain, it’s Wednesday.” Snowy aka Milou is very excited about the drink he has found.

11.03.2026 11:35 👍 379 🔁 160 💬 0 📌 4

Our work on bacterial Schlafens in phage defense is out today @natmicrobiol.nature.com!

Check out the final version here:
rdcu.be/e7Bmz

We are looking for postdocs and students to expand our team! Official postings are coming soon.

Please reach out if you're interested!
#phage #phagesky #microsky

09.03.2026 16:13 👍 58 🔁 30 💬 0 📌 2
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Deltaviruses spread through a viral Trojan Horse Hepatitis D-like satellite viruses, known as deltaviruses, have been recently discovered in a wide range of animals. These viruses are thought to expr…

We found a viral Trojan Horse: a virus can hide inside another virus.This one surprised us: deltaviruses don’t just borrow a helper virus. They can travel inside it.
A literal Trojan Horse “virus-in-a-virus” route into cells. 🤯 Kudos to 1st author @viroscope.bsky.social and co-authors !

06.03.2026 18:29 👍 192 🔁 96 💬 8 📌 14
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Nucleic acid-induced NADase activation of a short Sir2-associated prokaryotic Argonaute system (Cell Reports 43, 114391; July 23, 2024)

Nucleic acid-induced NADase activation of a short Sir2-associated prokaryotic Argonaute system: Cell Reports https://www.cell.com/cell-reports/fulltext/S2211-1247(26)00250-0?rss=yes

07.03.2026 11:49 👍 1 🔁 1 💬 0 📌 0

#microsky #phagesky

On #phage T4:

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

07.03.2026 08:14 👍 7 🔁 1 💬 1 📌 1

CBASS is a cyclic nucleotide-based antiviral system in bacteria that is related to cGAS-STING signaling in animals. One of the big questions is how CBASS is activated during phage infection? We made some progress on this during my final year in the Kranzusch lab.
www.biorxiv.org/content/10.6...

06.03.2026 05:27 👍 47 🔁 26 💬 3 📌 2

Out today: We discovered new viral proteins that target immune signaling molecules, solely based on their AlphaFold-predicted shapes

www.science.org/doi/10.1126/...

Congrats Nitzan Tal and coauthors! Thank you Kranzusch lab for the fun collaboration!

Linking below previous thread on our findings

05.03.2026 19:28 👍 103 🔁 49 💬 0 📌 5

Out now! In collaboration with Leifu Chang, we uncover the molecular and structural underpinnings of CRISPR-Cas12f-like RNA-guided transcription systems!

Links to the published articles:
tinyurl.com/55kpavet
tinyurl.com/sk6djwx3

Previous thread for the preprint:
bsky.app/profile/did:...

04.03.2026 20:28 👍 69 🔁 26 💬 0 📌 2
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New post-doctoral research position in my phage-host interactions (Phi) laboratory in @otagomicroimmuno.bsky.social at @universityofotago.bsky.social New Zealand. The project is focused on defences against jumbo phages. Please share and if interested apply using the link in the comments.

04.03.2026 00:20 👍 52 🔁 50 💬 5 📌 2
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Exciting news:
Our RNA community in @uniregensburg.bsky.social is set to grow!

We are opening a Junior Group Leader position in RNA biochemistry / ribonucleases / RNA stability. A great opportunity to start your own team within our collaborative RNA network.

Details & application 👇

04.03.2026 12:21 👍 17 🔁 22 💬 1 📌 1
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A jumbo cyanophage encodes the most complete ribosomal protein set in the known virosphere www.biorxiv.org/content/10.1...

04.03.2026 03:43 👍 33 🔁 17 💬 1 📌 1
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With Eugene Koonin, we propose a concept of “the selfish ribosome”, under which evolution of life is viewed as a ribosomal takeover, where the ribosome evolved to consume most of the cell’s resources, while other cellular componentry ensures the propagation of the ribosome. arxiv.org/abs/2602.23268

03.03.2026 08:58 👍 227 🔁 98 💬 5 📌 13

In our latest work, we characterise the Tmn defence system. We reveal plasmolysis as a new way to block phage infection, dramatically reducing secondary infections.

03.03.2026 19:55 👍 27 🔁 19 💬 1 📌 1
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Protein–protein interactions (PPIs) are key to discovering and interpreting new biological functions.

We’re excited to introduce 𝑭𝒍𝒂𝒔𝒉𝑷𝑷𝑰: a new application of gLM2 that uses genomic language modeling to predict proteome-wide PPIs in microbial genomes in minutes.

03.03.2026 15:16 👍 36 🔁 20 💬 2 📌 1
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1/5
Happy by a recent biorxiv pre-print about DARNA (PD-T7-3) anti-phage defense system. This system is activated by binding to ssDNA, presented by phage SSB, to cleave tRNA in the anti-codon loop.
www.biorxiv.org/content/10.6...

24.02.2026 08:08 👍 46 🔁 24 💬 1 📌 0
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RNA Splicing Lab - JOIN US Are you interested in investigating basic mechanisms in splicing regulation and gene expression? Our research group was launched in September 2024 and is hosted at the Institute of Molecular Infection...

We have an open position for a #PhD student (last week to apply!) & a lab technician/TA. For more information see: www.beuschlab.org/join-us
Interested in understanding post-transcriptional regulation and how #RNA #splicing decisions are made? Then take a look or share with people who might be! 🧪🧫

02.03.2026 15:44 👍 15 🔁 15 💬 0 📌 0
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Now Open: Call for PhD Students Join the next RNAmed generation | Application deadline: March 24

🧬Call for 11 fully-funded PhD positions in RNA-based medicine! 🧬

The graduate program “RNAmed – Future Leaders in RNA-based Medicine” is recruiting its second cohort of PhD students, starting in 2027: www.helmholtz-hiri.de/en/newsroom/...

📅 Application deadline: March 24

🧵 (1/4)

27.02.2026 13:31 👍 5 🔁 6 💬 1 📌 0

Thanks Khaled!

26.02.2026 14:44 👍 1 🔁 0 💬 0 📌 0
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Unraveling posttranscriptional regulatory networks in phage infection Phages employ sophisticated transcriptional regulatory networks to optimize replication. Recently, Silverman et al. used RIL-seq (RNA interaction by l…

Like bacteria, phages use sRNAs to regulate gene expression! Out today in @cp-trendsmicrobiol.bsky.social, @mvelascogomariz.bsky.social and I highlight a recent RIL-seq study from the @saharmelamed.bsky.social lab that looked into posttranscriptional regulation of lambda!

tinyurl.com/lambda-RIL-seq

26.02.2026 13:29 👍 33 🔁 20 💬 1 📌 2
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Convergent MurJ flippase inhibition by phage lysis proteins - Nature A common mechanism of inhibition of the essential lipid II flippase MurJ by three distinct phage-encoded single-gene lysis proteins provides insights into potential new targets for antimicrobial devel...

Convergent MurJ flippase inhibition by phage lysis proteins www.nature.com/articles/s41...

25.02.2026 19:01 👍 30 🔁 12 💬 0 📌 0
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Working at HIRI At the HIRI, we do not just value excellent research. Short distances, an open door policy, and a good working atmosphere—this is what distinguishes us from others. Have a look at our current job…

🚨Only a few days left to apply for the 10 #PhD positions within the “CURIOSITY IS INFECTIOUS” initiative across the five @helmholtzhzi.bsky.social sites! At #HIRI, we are excited to welcome candidates who are passionate about all things #RNA. ❤️‍🔥🧬Apply by Feb 28: www.helmholtz-hiri.de/en/jobs-tale...

25.02.2026 12:42 👍 2 🔁 3 💬 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.

23.02.2026 19:56 👍 14 🔁 19 💬 0 📌 2
Top:  A representative modeling example from Chimpanzee CPEB3 HDV-like ribozyme (PDB ID: 7QR3), with models predicted by four better-performing methods (blue cartoons) overlaid on experimental structure (gray cartoons). Left to right: DRFold2, DeepFoldRNA, AlphaFold3, RhoFold. Bottom: Structural visualization of the example from coxsackievirus B3 cloverleaf RNA (PDBID: 8DP3), showing experimental structure (left), AlphaFold3’s best prediction from 100 models (middle), and 5th model of DRfold2 (right), respectively. Structures are rainbow-colored from 5′ (blue) to 3′ (red) end.

Top: A representative modeling example from Chimpanzee CPEB3 HDV-like ribozyme (PDB ID: 7QR3), with models predicted by four better-performing methods (blue cartoons) overlaid on experimental structure (gray cartoons). Left to right: DRFold2, DeepFoldRNA, AlphaFold3, RhoFold. Bottom: Structural visualization of the example from coxsackievirus B3 cloverleaf RNA (PDBID: 8DP3), showing experimental structure (left), AlphaFold3’s best prediction from 100 models (middle), and 5th model of DRfold2 (right), respectively. Structures are rainbow-colored from 5′ (blue) to 3′ (red) end.

Accurate RNA structure prediction remains a challenge, despite recent computational advances. This study presents DRFold2, a #DeepLearning framework that significantly enhances accuracy of de novo #RNAstructure prediction by increasing contact prediction precision @plosbiology.org 🧪 plos.io/4aoOQiX

18.02.2026 09:37 👍 24 🔁 8 💬 0 📌 0
The image shows the structure of the viral polymerase (grey) with the ring-shaped transcription factors VITF-3l (red) and VITF-3s (green). The enclosed DNA is shown in blue. On the right-hand side, a light blue/dark blue factor (D1/D12) is shown. (Image: University of Würzburg)

The image shows the structure of the viral polymerase (grey) with the ring-shaped transcription factors VITF-3l (red) and VITF-3s (green). The enclosed DNA is shown in blue. On the right-hand side, a light blue/dark blue factor (D1/D12) is shown. (Image: University of Würzburg)

🦠 How do poxviruses start copying their genes? Researchers at JMU found that a ring-shaped viral protein clamps onto #DNA and positions the copying machinery. The discovery could inspire new antiviral strategies. 🔬 #pox #virus @natcomms.nature.com
➡️ www.uni-wuerzburg.de/en/news-and-...

18.02.2026 10:22 👍 5 🔁 1 💬 0 📌 0
Captain Haddock looking very frazzled, saying, “What a week, huh?”
Tintin leans into the frame and says, “Captain, it’s Wednesday.”
Snowy aka Milou is very excited about the drink he has found.

Viñeta de Tintin
El capitán Haddock, sentado a una mesa y con aspecto de estar agotado, dice: "¡Menuda semana, ¿eh?".
Tintín, a su derecha, le dice: "Capitán, es miércoles".
A la izquierda, Milú mira muy contento la bebida que está en la mesa.

Captain Haddock looking very frazzled, saying, “What a week, huh?” Tintin leans into the frame and says, “Captain, it’s Wednesday.” Snowy aka Milou is very excited about the drink he has found. Viñeta de Tintin El capitán Haddock, sentado a una mesa y con aspecto de estar agotado, dice: "¡Menuda semana, ¿eh?". Tintín, a su derecha, le dice: "Capitán, es miércoles". A la izquierda, Milú mira muy contento la bebida que está en la mesa.

18.02.2026 11:35 👍 270 🔁 125 💬 0 📌 6
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Congratulations to Sonomi Yamaguchi for her paper at @nature.com. Sonomi discovered Clover defense and explained how nucleotide signals control each step of viral sensing, immune regulation, and viral restriction – named for her beautiful "four-leaf" structures 🍀

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

18.02.2026 17:11 👍 59 🔁 31 💬 0 📌 4
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Active virus-host system in a Lokiarchaeon culture Asgard archaea are considered the closest prokaryotic relatives of eukaryotes and having a crucial role in eukaryogenesis. Only few organisms have been cultivated from this group and their viruses were previously described only through metagenomic reconstructions. Here, we report the first successful cultivation of an Asgard archaeal virus infecting a novel strain of Ca. Lokiarchaeum ossiferum B36. The 16 kbp integrated provirus is capable to excise and replicate independently leading to the formation of virus particles. Network analysis of shared protein clusters with other archaeal viruses places it in a new family, Fylgjaviridae . The host encodes a distinctive repertoire of antiviral defense systems, including Septu, Wadjet, and type II CBASS system, all different from the defense systems of the related strain Ca. L. ossiferum B35. Our cultures provide the first opportunity to study interactions of a virus-host system in Asgards and hold significant potential for developing genetic tools. ### Competing Interest Statement The authors have declared no competing interest. FWF Austrian Science Fund, 10.55776/EFP25, Z437 European Research Council, Advanced Grant #695192: TACKLE Max Planck Society, https://ror.org/01hhn8329

Active virus-host system in a Lokiarchaeon culture | bioRxiv https://www.biorxiv.org/content/10.64898/2026.02.13.705702v1?rss=1

14.02.2026 14:15 👍 15 🔁 4 💬 0 📌 1

The demystification of piRNA clusters

if you wonder how cells generate piRNAs specifically against transposons & you are looking for a weekend read

check out @86dominik.bsky.social's opus magna (or Dominik's great thread)

a shared project with the one and only Rippei Hayashi, lab alumnus & friend

13.02.2026 20:39 👍 41 🔁 18 💬 2 📌 1

🔔🧬 Quick reminder: If leading your own research group in RNA-based infection research is your goal, now is the time.

🗓 Sunday is the final day to submit your application for the @helmholtz.de Junior Research Group Leader positions. Don’t miss this opportunity! 👇

13.02.2026 09:23 👍 4 🔁 2 💬 0 📌 0

Great PhD and postdoc opportunities here at the @helmholtz-hiri.bsky.social !

👇🏻

10.02.2026 17:50 👍 2 🔁 1 💬 0 📌 0