Mart Krupovic
@mkrupovic.bsky.social
Virus origins/diversity/evolution; mobilome; Archaea.
Head of the Cell Biology and Virology of Archaea Unit at Institut Pasteur:
https://research.pasteur.fr/en/team/archaeal-virology/
Head of the Cell Biology and Virology of Archaea Unit at Institut Pasteur:
https://research.pasteur.fr/en/team/archaeal-virology/
Reposted by Mart Krupovic
New update for the gbdraw web app!🚀
You can now display gene labels ONLY on the first genome in the linear diagram. Just select "First" in the "Label layout" option.
Try it out here👉: gbdraw.streamlit.app
#gbdraw #bioinformatics #genomics #visualization #virology #microbiology #streamlit
You can now display gene labels ONLY on the first genome in the linear diagram. Just select "First" in the "Label layout" option.
Try it out here👉: gbdraw.streamlit.app
#gbdraw #bioinformatics #genomics #visualization #virology #microbiology #streamlit
November 24, 2025 at 2:06 PM
New update for the gbdraw web app!🚀
You can now display gene labels ONLY on the first genome in the linear diagram. Just select "First" in the "Label layout" option.
Try it out here👉: gbdraw.streamlit.app
#gbdraw #bioinformatics #genomics #visualization #virology #microbiology #streamlit
You can now display gene labels ONLY on the first genome in the linear diagram. Just select "First" in the "Label layout" option.
Try it out here👉: gbdraw.streamlit.app
#gbdraw #bioinformatics #genomics #visualization #virology #microbiology #streamlit
Reposted by Mart Krupovic
Arbitrium systems control lysis/lysogeny through the regulation of small antirepressor proteins www.biorxiv.org/content/10.1...
November 25, 2025 at 5:59 AM
Arbitrium systems control lysis/lysogeny through the regulation of small antirepressor proteins www.biorxiv.org/content/10.1...
Reposted by Mart Krupovic
Recently out: “Uniform dynamics of cohesin-mediated loop extrusion in living human cells”. In this study led by brilliant former PhD student Thomas Sabaté we use live cell microscopy and polymer simulations to characterize how DNA loops and TADs form in human cells by cohesin-driven extrusion. (1/4)
November 23, 2025 at 4:35 PM
Recently out: “Uniform dynamics of cohesin-mediated loop extrusion in living human cells”. In this study led by brilliant former PhD student Thomas Sabaté we use live cell microscopy and polymer simulations to characterize how DNA loops and TADs form in human cells by cohesin-driven extrusion. (1/4)
Reposted by Mart Krupovic
🚨Preprint alert - this is a big one! We transfer the revolutionary power of TnSeq to bacteriophages.
Our HIDEN-SEQ links the "dark matter" genes of your favorite phage to any selectable phenotype, guiding the path from fun observations to molecular mechanisms.
A thread 1/8
Our HIDEN-SEQ links the "dark matter" genes of your favorite phage to any selectable phenotype, guiding the path from fun observations to molecular mechanisms.
A thread 1/8
November 20, 2025 at 8:40 PM
🚨Preprint alert - this is a big one! We transfer the revolutionary power of TnSeq to bacteriophages.
Our HIDEN-SEQ links the "dark matter" genes of your favorite phage to any selectable phenotype, guiding the path from fun observations to molecular mechanisms.
A thread 1/8
Our HIDEN-SEQ links the "dark matter" genes of your favorite phage to any selectable phenotype, guiding the path from fun observations to molecular mechanisms.
A thread 1/8
Reposted by Mart Krupovic
Let’s wrap things up: my commentary on the Asgard hypernucleosomes.
Congratulations to all the authors of the paper 🍾!
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Cryo-EM reveals open and closed Asgard chromatin assemblies: Molecular Cell www.cell.com/molecular-ce...
Congratulations to all the authors of the paper 🍾!
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Cryo-EM reveals open and closed Asgard chromatin assemblies: Molecular Cell www.cell.com/molecular-ce...
Cryo-EM reveals open and closed Asgard chromatin assemblies
Ranawat et al. show the cryo-EM structures of Asgard archaeal chromatin assemblies,
revealing that the histone HHoB assembles into both compact closed and extended open
hypernucleosomes. The closed co...
www.cell.com
November 20, 2025 at 4:23 PM
Let’s wrap things up: my commentary on the Asgard hypernucleosomes.
Congratulations to all the authors of the paper 🍾!
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Cryo-EM reveals open and closed Asgard chromatin assemblies: Molecular Cell www.cell.com/molecular-ce...
Congratulations to all the authors of the paper 🍾!
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Cryo-EM reveals open and closed Asgard chromatin assemblies: Molecular Cell www.cell.com/molecular-ce...
Reposted by Mart Krupovic
New video on Nested Symbiosis in extreme environments out on my YouTube Channel. Give it a watch if you can, a great paper by @mkrupovic.bsky.social
Original Paper: doi.org/10.1038/s415...
youtu.be/OQR5obtf7-4
Original Paper: doi.org/10.1038/s415...
youtu.be/OQR5obtf7-4
Nested Symbiosis in Extreme Environments
YouTube video by Archaeal Adventures
youtu.be
November 17, 2025 at 4:40 PM
New video on Nested Symbiosis in extreme environments out on my YouTube Channel. Give it a watch if you can, a great paper by @mkrupovic.bsky.social
Original Paper: doi.org/10.1038/s415...
youtu.be/OQR5obtf7-4
Original Paper: doi.org/10.1038/s415...
youtu.be/OQR5obtf7-4
Reposted by Mart Krupovic
Version 2 is out! More comprehensive text plus new tissue- and pathway-specific analysis revealing how different viruses trigger systemic aging through diverse mechanisms.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
November 16, 2025 at 12:44 AM
Version 2 is out! More comprehensive text plus new tissue- and pathway-specific analysis revealing how different viruses trigger systemic aging through diverse mechanisms.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Mart Krupovic
Amazing piece of work from @rtoshiro.bsky.social
& Kim Seed at UC Berkeley. 🙌
Played a tiny role in this work.
Surviving phage attack dynamically regulates bacterial immunity to defeat counterdefenses
www.biorxiv.org/content/10.1...
& Kim Seed at UC Berkeley. 🙌
Played a tiny role in this work.
Surviving phage attack dynamically regulates bacterial immunity to defeat counterdefenses
www.biorxiv.org/content/10.1...
bsky.app
November 15, 2025 at 3:37 PM
Amazing piece of work from @rtoshiro.bsky.social
& Kim Seed at UC Berkeley. 🙌
Played a tiny role in this work.
Surviving phage attack dynamically regulates bacterial immunity to defeat counterdefenses
www.biorxiv.org/content/10.1...
& Kim Seed at UC Berkeley. 🙌
Played a tiny role in this work.
Surviving phage attack dynamically regulates bacterial immunity to defeat counterdefenses
www.biorxiv.org/content/10.1...
Reposted by Mart Krupovic
My lab is recruiting a post-doc ! please share ! emploi.cnrs.fr/Offres/CDD/U...
November 14, 2025 at 2:27 PM
My lab is recruiting a post-doc ! please share ! emploi.cnrs.fr/Offres/CDD/U...
Reposted by Mart Krupovic
Reposted by Mart Krupovic
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis www.nature.com/articles/s41...
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
the sun is shining through the clouds in the sky above the ocean
ALT: the sun is shining through the clouds in the sky above the ocean
media.tenor.com
November 12, 2025 at 4:00 PM
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis www.nature.com/articles/s41...
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
Reposted by Mart Krupovic
Preprint: Bacteria sense virus-induced genome degradation via methylated mononucleotides
tinyurl.com/ch3damp
We show how molecular byproducts released during virus-induced cell exploitation are used as signals to trigger host immunity
Revealed by the amazing Ilya Osterman. See his thread below👇
tinyurl.com/ch3damp
We show how molecular byproducts released during virus-induced cell exploitation are used as signals to trigger host immunity
Revealed by the amazing Ilya Osterman. See his thread below👇
November 6, 2025 at 10:39 AM
Preprint: Bacteria sense virus-induced genome degradation via methylated mononucleotides
tinyurl.com/ch3damp
We show how molecular byproducts released during virus-induced cell exploitation are used as signals to trigger host immunity
Revealed by the amazing Ilya Osterman. See his thread below👇
tinyurl.com/ch3damp
We show how molecular byproducts released during virus-induced cell exploitation are used as signals to trigger host immunity
Revealed by the amazing Ilya Osterman. See his thread below👇
Reposted by Mart Krupovic
Check out the fancy anti-parallel cytochrome nanowire bundles structure we've solved. This structure originates from a bacterium, strain name WTL (well-to-live), isolated by the Bond group from the Soudan Underground Iron Mine, located 713 m below the surface. www.biorxiv.org/content/10.1...
A Bundled Antiparallel Cytochrome Nanowire Structure Suggests Roles in Cell-Cell Electron Transfer and Biofilm Formation
Long-range extracellular electron transfer enables respiring microbes to use minerals, other organisms, or electrodes as electron acceptors by transporting electrons microns away from the cell surface...
www.biorxiv.org
November 3, 2025 at 3:48 PM
Check out the fancy anti-parallel cytochrome nanowire bundles structure we've solved. This structure originates from a bacterium, strain name WTL (well-to-live), isolated by the Bond group from the Soudan Underground Iron Mine, located 713 m below the surface. www.biorxiv.org/content/10.1...
Reposted by Mart Krupovic
Curious about the top methane-maker in your gut? Meet this month's featured microbe and find out! 🦠💨🔥 in @cp-trendsmicrobiol.bsky.social #archaeasky
@sgribaldo.bsky.social @pasteur.fr
🔗 Full article linked in reply👇
www.sciencedirect.com/science/arti...
@sgribaldo.bsky.social @pasteur.fr
🔗 Full article linked in reply👇
www.sciencedirect.com/science/arti...
Methanobrevibacter smithii
www.sciencedirect.com
November 3, 2025 at 2:58 PM
Curious about the top methane-maker in your gut? Meet this month's featured microbe and find out! 🦠💨🔥 in @cp-trendsmicrobiol.bsky.social #archaeasky
@sgribaldo.bsky.social @pasteur.fr
🔗 Full article linked in reply👇
www.sciencedirect.com/science/arti...
@sgribaldo.bsky.social @pasteur.fr
🔗 Full article linked in reply👇
www.sciencedirect.com/science/arti...
Reposted by Mart Krupovic
This paper has been a must! Great collaboration with @mkrupovic.bsky.social and @yifanzhou.bsky.social, a N&V by a legend of halophilic archaea tinyurl.com/yc3dcv72, and one picture of one of our expeditions to Dallol making the cover of the November issue of @natmicrobiol.nature.com
rdcu.be/eLtCH
rdcu.be/eLtCH
November 2, 2025 at 5:52 PM
This paper has been a must! Great collaboration with @mkrupovic.bsky.social and @yifanzhou.bsky.social, a N&V by a legend of halophilic archaea tinyurl.com/yc3dcv72, and one picture of one of our expeditions to Dallol making the cover of the November issue of @natmicrobiol.nature.com
rdcu.be/eLtCH
rdcu.be/eLtCH
Reposted by Mart Krupovic
Applications closing tonight (midnight French time) !!!
Still a few hours to apply !!
Still a few hours to apply !!
Open position to work on Type IX secretion (#T9SS) in our lab, in collaboration withe the group of Eric Reynolds at the Dental School of the University of Melbourne. Please spread the word, and forward to anyone potentially interested ! Apply here:
emploi.cnrs.fr/Offres/Docto...
emploi.cnrs.fr/Offres/Docto...
Portail Emploi CNRS - Offre d'emploi - Thèse en Microbiologie-Biochimie (H/F)
emploi.cnrs.fr
October 30, 2025 at 1:17 PM
Applications closing tonight (midnight French time) !!!
Still a few hours to apply !!
Still a few hours to apply !!
Reposted by Mart Krupovic
📣 PhD Scholarship Opportunity for International Students!
Are you looking to do a PhD in soil microbial and viral ecology?
✍️ Get in touch now!!
✅ Requirements: Masters degree, Distinguished CV, Highly motivated
⏳ Application deadline: November 24
www.univ-lyon1.fr/recherche/fo...
Are you looking to do a PhD in soil microbial and viral ecology?
✍️ Get in touch now!!
✅ Requirements: Masters degree, Distinguished CV, Highly motivated
⏳ Application deadline: November 24
www.univ-lyon1.fr/recherche/fo...
APPEL A PROJET
www.univ-lyon1.fr
October 21, 2025 at 5:36 PM
📣 PhD Scholarship Opportunity for International Students!
Are you looking to do a PhD in soil microbial and viral ecology?
✍️ Get in touch now!!
✅ Requirements: Masters degree, Distinguished CV, Highly motivated
⏳ Application deadline: November 24
www.univ-lyon1.fr/recherche/fo...
Are you looking to do a PhD in soil microbial and viral ecology?
✍️ Get in touch now!!
✅ Requirements: Masters degree, Distinguished CV, Highly motivated
⏳ Application deadline: November 24
www.univ-lyon1.fr/recherche/fo...
Reposted by Mart Krupovic
Lab’s first paper is out!! We show the first structures of #Asgard #chromatin by #cryo-EM 🧬❄️
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
October 28, 2025 at 3:07 PM
Lab’s first paper is out!! We show the first structures of #Asgard #chromatin by #cryo-EM 🧬❄️
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Reposted by Mart Krupovic
First time posting on Bluesky! 🥳 We discovered a new pilus family in cyanobacteria. The pilin has a novel protein fold that forms a super-tight double-layer tube. Similar gene clusters exist in a few cyanobacterial orders. A great collaboration with John and others! www.nature.com/articles/s41...
A family of tubular pili from harmful algal bloom forming cyanobacterium Microcystis aeruginosa - Nature Communications
Ricca et al discover a new family of tubular pili in Microcystis aeruginosa, a harmful algal bloom-forming cyanobacterium. These pili are crucial for buoyancy by forming cell micro-colonies, which inc...
www.nature.com
October 24, 2025 at 4:08 AM
First time posting on Bluesky! 🥳 We discovered a new pilus family in cyanobacteria. The pilin has a novel protein fold that forms a super-tight double-layer tube. Similar gene clusters exist in a few cyanobacterial orders. A great collaboration with John and others! www.nature.com/articles/s41...
Reposted by Mart Krupovic
Glad to share our paper out today @NatureEcoEvo: “Serial innovations by Asgard archaea shaped the DNA replication machinery of the early eukaryotic ancestor”. www.nature.com/articles/s41... #microsky #archaeasky
Serial innovations by Asgard archaea shaped the DNA replication machinery of the early eukaryotic ancestor - Nature Ecology & Evolution
Phylogenetic and biochemical analyses show a diversity of components of the DNA replication machinery in different Asgard archaea that contributed to the eukaryotic DNA replication machinery.
www.nature.com
October 21, 2025 at 3:06 PM
Glad to share our paper out today @NatureEcoEvo: “Serial innovations by Asgard archaea shaped the DNA replication machinery of the early eukaryotic ancestor”. www.nature.com/articles/s41... #microsky #archaeasky
Reposted by Mart Krupovic
Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions
Out now in Nature Microbiology, by Yifan Zhou, Mart Krupovic & colleagues.
@mkrupovic.bsky.social
@yifanzhou.bsky.social
@deemteam.bsky.social
www.nature.com/articles/s41...
Out now in Nature Microbiology, by Yifan Zhou, Mart Krupovic & colleagues.
@mkrupovic.bsky.social
@yifanzhou.bsky.social
@deemteam.bsky.social
www.nature.com/articles/s41...
Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions - Nature Microbiology
An exploration of the viromes of haloarchaea and their ultra-small DPANN symbionts reveals plasmid-derived satellites of viruses from both archaeal groups, highlighting the complexity of nested symbio...
www.nature.com
October 20, 2025 at 7:46 PM
Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions
Out now in Nature Microbiology, by Yifan Zhou, Mart Krupovic & colleagues.
@mkrupovic.bsky.social
@yifanzhou.bsky.social
@deemteam.bsky.social
www.nature.com/articles/s41...
Out now in Nature Microbiology, by Yifan Zhou, Mart Krupovic & colleagues.
@mkrupovic.bsky.social
@yifanzhou.bsky.social
@deemteam.bsky.social
www.nature.com/articles/s41...
A nice N&V article by Mike Dyall-Smith on our recent paper
( www.nature.com/articles/s41... ):
www.nature.com/articles/s41...
( www.nature.com/articles/s41... ):
www.nature.com/articles/s41...
Archaeal symbioses all the way down - Nature Microbiology
Ethiopian salt lakes feature unique microbial communities with nesting layers of symbioses, where haloarchaea and their ultra-small archaeal symbionts are prey to viruses, which are in turn hijacked b...
www.nature.com
October 20, 2025 at 11:51 AM
A nice N&V article by Mike Dyall-Smith on our recent paper
( www.nature.com/articles/s41... ):
www.nature.com/articles/s41...
( www.nature.com/articles/s41... ):
www.nature.com/articles/s41...
Reposted by Mart Krupovic
Now published: EnVhogDB, a large database of viral protein family HMM profiles to help functional annotation of new phage genomes - peercommunityjournal.org/articles/10....
EnVhogDB: an extended view of the viral protein families on Earth through a vast collection of HMM profiles
peercommunityjournal.org
October 18, 2025 at 7:58 AM
Now published: EnVhogDB, a large database of viral protein family HMM profiles to help functional annotation of new phage genomes - peercommunityjournal.org/articles/10....
Check out our paper on intricate nested interactions between viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts. Excellent collaboration with @deemteam.bsky.social, @anagtz.bsky.social and Michail Yakimov
Free access link: rdcu.be/eLtCH
🧵 by @yifanzhou.bsky.social 👇
Free access link: rdcu.be/eLtCH
🧵 by @yifanzhou.bsky.social 👇
Our work on viruses and virus satellites of haloarchaea and their DPANN symbionts is out today in Nature Microbiology!
@mkrupovic.bsky.social @deemteam.bsky.social @anagtz.bsky.social
www.nature.com/articles/s41...
@mkrupovic.bsky.social @deemteam.bsky.social @anagtz.bsky.social
www.nature.com/articles/s41...
Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions - Nature Microbiology
An exploration of the viromes of haloarchaea and their ultra-small DPANN symbionts reveals plasmid-derived satellites of viruses from both archaeal groups, highlighting the complexity of nested symbio...
www.nature.com
October 17, 2025 at 10:28 AM
Check out our paper on intricate nested interactions between viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts. Excellent collaboration with @deemteam.bsky.social, @anagtz.bsky.social and Michail Yakimov
Free access link: rdcu.be/eLtCH
🧵 by @yifanzhou.bsky.social 👇
Free access link: rdcu.be/eLtCH
🧵 by @yifanzhou.bsky.social 👇
Reposted by Mart Krupovic
Now with the correct link:
We reviewed the "Molecular Mechanisms of Poxvirus Evolution"
We show that poxviruses have highly adaptable genomes, and are not sluggishly evolving, as often described.
journals.asm.org/doi/10.1128/...
We reviewed the "Molecular Mechanisms of Poxvirus Evolution"
We show that poxviruses have highly adaptable genomes, and are not sluggishly evolving, as often described.
journals.asm.org/doi/10.1128/...
October 16, 2025 at 7:20 PM
Now with the correct link:
We reviewed the "Molecular Mechanisms of Poxvirus Evolution"
We show that poxviruses have highly adaptable genomes, and are not sluggishly evolving, as often described.
journals.asm.org/doi/10.1128/...
We reviewed the "Molecular Mechanisms of Poxvirus Evolution"
We show that poxviruses have highly adaptable genomes, and are not sluggishly evolving, as often described.
journals.asm.org/doi/10.1128/...