Sascha Martens
@martenslab.bsky.social
📤 564
📥 116
📝 2
Biochemist and cell biologist working on autophagy at the Max Perutz Labs, University of Vienna
reposted by
Sascha Martens
Vienna BioCenter Scientific Training
3 days ago
Exciting job offer: PhD Program Manager. Lead recruitment, support PhD candidates, and shape doctoral training at a top international life sciences campus. https://ow.ly/3YkN50YAuGM
Institute of Molecular Biotechnology
,
Max Perutz Labs Vienna
,
IMP
,
Gregor Mendel Institute of Molecular Plant Biology
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reposted by
Sascha Martens
Journal of Cell Biology
17 days ago
In this Perspective, North,
@doroteaartscience.bsky.social
, Shoemaker et al. highlight the rapidly expanding role of LC3-interacting regions in autophagy.
rupress.org/jcb/article/...
📕 Part of
#Autophagy
2026 👉
rupress.org/jcb/collecti...
#GRC
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reposted by
Sascha Martens
Aligning Science Across Parkinson's
21 days ago
📢 New
#preprint
from CRN Team Hurley! The team uncovers the mechanism of ATG2A-mediated lipid transport 🧬 Structural modeling and simulations show that N-terminal helices gate lipid transfer, and a designed mutant transfers lipids three times faster in vitro. 🔗
bit.ly/4rHuWpr
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reposted by
Sascha Martens
Aligning Science Across Parkinson's
28 days ago
📢 New
#preprint
from CRN Team Hurley! The team uncovers the mechanism of ATG2A-mediated lipid transport 🧪 Structural modeling and simulations show that N-terminal helices gate lipid transfer, and a designed mutant transfers lipids three times faster in vitro. 🔗
bit.ly/3ZVAxw6
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reposted by
Sascha Martens
Yasin Dagdas
about 1 month ago
Really happy to see this one out:
www.sciencedirect.com/science/arti...
Alibek's drive & great coll w/ friends
@gekaragoz.bsky.social
& E. Hallacli resulted in a cool story that starts with our beloved
#Marchantia
and ends with iPSC-derived neurons 🤩🤪 A short 🧵
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Sascha Martens
Bernd Bauer
about 2 months ago
Why do pathological protein aggregates persist in cells and how can we overcome this? In our new preprint, we show that Tau aggregates fail to initiate selective autophagy and that their autophagic degradation can be restored.
#Autophagy
#Tau
#Proteostasis
Out now 👇
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.02.12.705532v1
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Sascha Martens
IMP
2 months ago
More:
www.imp.ac.at/news/article...
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From one complex to many: Rethinking the BLOC/BORC system
Two protein complexes that regulate intracellular transport and lysosome positioning were long thought to exist as single, well-defined entities. New structural insights now come from the groups of Da...
https://www.imp.ac.at/news/article/from-one-complex-to-many-rethinking-the-bloc-borc-system
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Sascha Martens
Wilfling Lab
2 months ago
LLOMe has long been used to study lysosomal damage, yet how it works has remained a mystery. Using cryo-electron tomography, we show it forms amyloid structures inside lysosomes that mechanically rupture membranes – revealing a new paradigm for lysosomal failure. 🔗
doi.org/10.64898/202...
#CryoET
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Sascha Martens
Wilfling Lab
3 months ago
We are excited to share our new preprint which is now available to read on biorXiv:
doi.org/10.64898/202...
🎉🎉🎉
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Sascha Martens
Yasin Dagdas
3 months ago
If you are interested in
#ubiquitin
related topics (Who isn’t???) & looking for a friendly and collegial meeting where you can talk to anyone & everyone, this is your meeting!
add a skeleton here at some point
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Sascha Martens
SFB Targeted Protein Degradation
3 months ago
Join us for the
#Ubiquitin
& Friends Symposium 2026, April 29-30, in Vienna! Fantastic guest speakers👇 & many slots for talks from abstracts, flash-talks & posters. Lots of opportunities to network. Register now to save your spot! ➡️
www.protein-degradation.org/symposium/
#ubfriends2026
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Sascha Martens
Aligning Science Across Parkinson's
3 months ago
CRN Team Hurley developed AI-directed voxel extraction (AIVE), a segmentation strategy that refines AI-based organelle boundary predictions. Using AIVE, they identified a previously unknown mitochondrial contact termed the mitochondrial intrusion 🧪 🔗 Read the
#publication
:
bit.ly/4qeZiOY
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reposted by
Sascha Martens
The EMBO Journal
3 months ago
The ATG8 E3-like ligases sense lysosomal damage and initiate ESCRT-mediated membrane repair Dale Corkery, Yao-Wen Wu et al
link.springer.com/article/10.1...
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The ATG8 E3-like ligases sense lysosomal damage and initiate ESCRT-mediated membrane repair - The EMBO Journal
After damage from pathogenic, chemical or physical stress, endolysosomal membranes are repaired and resealed by the endosomal sorting complex required for transport (ESCRT) machinery, but how this mem...
https://link.springer.com/article/10.1038/s44318-025-00672-1
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Sascha Martens
Sam Lewis, Ph.D.
3 months ago
⚡️Mitochondria make ATP, the energy that powers life. But in neurons, with axons up to a meter long, how do these tiny power plants stay functional in the right places? We went looking. 1/n
www.biorxiv.org/content/10.6...
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Self-renewal of neuronal mitochondria through asymmetric division
Mitochondrial ATP production is essential for life. Mitochondrial function depends on the spatio-temporal coordination of nuclear and mitochondrial genome expression, yet how this coordination occurs ...
https://www.biorxiv.org/content/10.64898/2025.12.17.694973v1
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Sascha Martens
Yasin Dagdas
4 months ago
Glad to have this finally published:
www.sciencedirect.com/science/arti...
lots of new data since the
#preprint
. If you are into selective
#autophagy
,
#evolution
,
#proteostasis
Please have a look!
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reposted by
Sascha Martens
Silvia Ramundo
4 months ago
There are a couple of empty chairs at our table — want to sit with us? Reach out to me or any lab member
www.oeaw.ac.at/gmi/research...
We’ll be hiring two postdocs in 2026. We’re excited about ambitious and creative ideas and are committed to supporting future group leaders 1/2
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reposted by
Sascha Martens
Max Perutz Labs Vienna
5 months ago
✨ Passionate about cell biology or biochemistry? Join the Martens Lab as a postdoc to uncover why autophagy stalls at disease-linked protein aggregates - and how to restart it 🧠 Apply here ➡️
tinyurl.com/24dcrcke
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reposted by
Sascha Martens
Elias Adriaenssens
5 months ago
Join us later today 👇
add a skeleton here at some point
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Sascha Martens
IMP
5 months ago
🌍Open call: Junior Group Leader positions! Join a world-class biomedical research institute at the heart of the Vienna BioCenter, where curiosity drives discovery. Lead your own lab, pursue bold ideas, and shape the future of science at the IMP:
www.imp.ac.at/career/open-...
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Sascha Martens
Dorotea - Art&Science
5 months ago
New pre-print out on the stepwise recruitment to membrane of the
#autophagy
ULK1 complex from the
@mito911.bsky.social
from
@martenslab.bsky.social
Ian Ganley
@hummerlab.bsky.social
@jimhurley.bsky.social
labs with the generous support of
@asapresearch.parkinsonsroadmap.org
doi.org/10.1101/2025...
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Reconstitution of multistep recruitment of ULK1 to membranes in autophagy
The ULK1 complex (ULK1C) and the class III phosphatidylinositol 3-kinase complex I (PI3KC3-C1) act together to initiate autophagy. Human ULK1C consists of ULK1 itself, FIP200, and the HORMA domain het...
https://doi.org/10.1101/2025.11.07.687251
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Sascha Martens
CIBSS – Centre for Integrative Biological Signalling Studies
5 months ago
Congratulations! Claudine Kraft
@kraftlabfr.bsky.social
receives a prestigious ERC Synergy Grant – to find out why some protein
#aggregates
can be cleared by
#autophagy
and others not. She and her partners will harness this knowledge to improve autophagy in
#ageing
&
#disease
. 🔗
kurzlinks.de/50j8
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ERC Synergy Grant for Prof. Dr. Claudine Kraft
CIBSS speaker Prof. Dr. Claudine Kraft is part of a team receiving an ERC Synergy Grant of ten million euros for her research on how autophagy degrades large protein aggregates in health and disease.
https://kurzlinks.de/50j8
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Sascha Martens
Jim Hurley
5 months ago
Thrilled to join you and Claudine to study the cell's own version of Banksy's self-shredding artwork!
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Fantastic teamwork with
@kraftlabfr.bsky.social
and
@jimhurley.bsky.social
! Looking forward to exciting discoveries ahead. Many thanks to
@erc.europa.eu
for funding our proposal.
@univie.ac.at
@maxperutzlabs.ac.at
@viennabiocenter.bsky.social
add a skeleton here at some point
5 months ago
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Sascha Martens
Shotaro Otsuka
5 months ago
Another opportunity to join
@maxperutzlabs.ac.at
! If you're looking to start your own lab in a collaborative and supportive environment, I highly recommend it!
www.nature.com/naturecareer...
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Tenure-Track Professorship in Genome Biology - Vienna BioCenter, Austria job with Max Perutz Labs, University of Vienna | 12848567
Launch your lab at the Max Perutz Labs and join us in our mission to analyze and reconstitute complex biological systems across scales.
https://www.nature.com/naturecareers/job/12848567/tenure-track-professorship-in-genome-biology/?LinkSource=PremiumListing
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reposted by
Sascha Martens
Max Perutz Labs Vienna
5 months ago
📢 Open Call! The Max Perutz Labs invite applications for a Full Professorship in Integrative Structure Biology with a focus on in situ structural biology using cryo-electron tomography (cryo-ET) and related methods. More details ➡️
tinyurl.com/brswbymu
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reposted by
Sascha Martens
Elias Adriaenssens
5 months ago
Our latest review is now online! 👇
@martenslab.bsky.social
Mechanism of autophagy initiation by transmembrane selective autophagy receptors | The EMBO Journal
www.embopress.org/doi/full/10....
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Mechanism of autophagy initiation by transmembrane selective autophagy receptors | The EMBO Journal
EMBO Press is an editorially independent publishing platform for the development of EMBO scientific publications.
https://www.embopress.org/doi/full/10.1038/s44318-025-00615-w
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reposted by
Sascha Martens
Jim Hurley
6 months ago
Position available! Team
@mito911.bsky.social
needs a new scientific program manager to take over from legendary super-PM
@doroteaartscience.bsky.social
, who is moving on to bigger things. This is a Berkeley-based position. Apply at
aprecruit.berkeley.edu/JPF05103
.
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reposted by
Sascha Martens
Zhicheng Cui | 崔志成
7 months ago
Finally in
@nature.com
🎉 We uncovered step-wise mTORC1 activation on membrane: RAG–Ragulator recruits, RHEB pushes closer, and direct membrane contacts by RAPTOR + mTOR trigger full kinase activity.👉 The membrane is not just a platform — it’s part of the mechanism.
www.nature.com/articles/s41...
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Structural basis for mTORC1 activation on the lysosomal membrane - Nature
Cryo-electron microscopy was used to study human mechanistic target of rapamycin complex 1 (mTORC1) activation on lysosomal membranes, showing progressive recruitment by RAG–Ragulator, RHEB and R...
https://www.nature.com/articles/s41586-025-09545-3
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reposted by
Sascha Martens
Christa Buecker
7 months ago
Just one more week left to get an application in! Starting my lab at the Perutz and the
@viennabiocenter.bsky.social
has been a fantastic opportunity that shaped me as a scientist!
add a skeleton here at some point
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reposted by
Sascha Martens
Aligning Science Across Parkinson's
7 months ago
📣 Don't miss out on the upcoming
@mito911.bsky.social
webinar featuring Katie Drerup, PhD, from the University of Wisconsin. 👇 Reserve your spot using the link below. 📅 September 8 ⏰ 11:00 AM EST RSVP:
bit.ly/4mUJeAc
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Sascha Martens
Martin Loose
7 months ago
We are looking for a Master’s student to join a project on in vitro reconstitution of signaling networks in pathogen–host interactions: combine protein biochemistry, fluorescence microscopy & image analysis. Deadline: September 15. Find out more and apply here:
ist.ac.at/en/job/maste...
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Master Thesis Position – Loose Research Group
Our Group The Loose lab at the Institute of Science and Technology Austria (ISTA) is looking for a highly motivated Master student to join our research on the in vitro reconstitution of signaling n...
https://ist.ac.at/en/job/master-thesis-position-loose-research-group/
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Sascha Martens
Dan Grabarczyk
7 months ago
Glad to share the final version of our story about the UBR4 complex, an E4 ligase protein quality control hub
@science.org
. Now with more cryo-EM structures and a deeper dive into substrate recognition, especially escaped mitochondrial proteins
@clausenlab.bsky.social
www.science.org/doi/10.1126/...
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Sascha Martens
Dan Grabarczyk
7 months ago
Happy to share our work on the structure and function of the unusual E3 ligase ZNFX1
@cp-cell.bsky.social
. It uses a nucleic acid-activated transthiolation mechanism, ubiquitinating and clustering RNA to protect cells in an immune response.
@clausenlab.bsky.social
www.cell.com/cell/fulltex...
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A split-site E3 ligase mechanism enables ZNFX1 to ubiquitinate and cluster single-stranded RNA into ubiquitin-coated nucleoprotein particles
Grabarczyk et al. show the structure and mechanism of a non-canonical ubiquitin ligase, which is activated through nucleic-acid-induced oligomerization and is critical for cell survival during immune ...
https://www.cell.com/cell/fulltext/S0092-8674%2825%2900920-1
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Sascha Martens
bioRxivpreprint
8 months ago
A lipid transfer-dependent feedback loop activates ATG9A compartments in autophagy initiation
https://www.biorxiv.org/content/10.1101/2025.08.16.670665v1
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Sascha Martens
Jim Hurley
8 months ago
So happy to see
@doroteaartscience.bsky.social
's art on the cover!
add a skeleton here at some point
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Sascha Martens
Yasin Dagdas
8 months ago
If you’re enjoying some calm while others are on holiday, here’s a
#NEW
#preprint
to dive into — led by the brilliant
@vbcscitraining.bsky.social
student A. Abdrakhmanov: 👇 A quick thread + link:
www.biorxiv.org/content/10.1...
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Ancestral P-body proteins rewired for autophagic recycling in the early land plant Marchantia polymorpha
Processing bodies (P-bodies) are conserved ribonucleoprotein (RNP) granules central to RNA metabolism across eukaryotes. Although the mechanisms underlying their assembly are well understood, the path...
https://www.biorxiv.org/content/10.1101/2025.08.09.669463v1
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Sascha Martens
The Science of Parkinson's
8 months ago
New research reports the identification of a Mitophagic Stress Response ("MitoSR" - mmm, catchy!) activated by mitochondrial damage in neurons & operating in parallel to canonical Pink1/Parkin-dependent mitophagy
www.nature.com/articles/s41...
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Sascha Martens
Journal of Cell Biology
8 months ago
The rapidly expanding role of LC3-interacting regions in
#autophagy
. New Perspective from Brian North,
@doroteaartscience.bsky.social
, Christopher Shoemaker and colleagues (Geisel School of Medicine, Dartmouth College):
rupress.org/jcb/article/...
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Sascha Martens
Jim Hurley
8 months ago
Congratulations
@kev-in-situ-et.bsky.social
and the whole team on in situ cryo-ET images of OA-induced mitochondria damage and Parkin-dependent mitophagy out now
tinyurl.com/25b82cp4
. We couldn't have done it without in situ guru
@wilflinglab.bsky.social
and mito guru
@samlewis.bsky.social
.
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Sascha Martens
Jim Hurley
8 months ago
Structural and cell biology NPG publication two-fer today: lysosome signaling structural biology
tinyurl.com/mt3uc96k
with
@robzonculab.bsky.social
and mitophagy initiation
tinyurl.com/3rpjyfjt
with
@martenslab.bsky.social
@lazaroulab.bsky.social
and
@hummerlab.bsky.social
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Sascha Martens
Elias Adriaenssens
8 months ago
And it's out! I'm thrilled to share our new paper (Adriaenssens et al., Nat Cell Biol 2025). This paper describes a new mechanism for the initiation of autophagosome biogenesis. We found that this WIPI-ATG13-driven pathway is preferentially used by a group of transmembrane autophagy receptors.
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Sascha Martens
Max Perutz Labs Vienna
8 months ago
🚨 Out now! Autophagy keeps cells healthy - and when it goes wrong, diseases like Parkinson’s can emerge.
@elias-adriaenssens.bsky.social
(Martens lab) in
@natureportfolio.nature.com
Cell Biology challenge the conventional hierarchy of autophagy factors ➡️
tinyurl.com/y33nrtn2
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Sascha Martens
Max Perutz Labs Vienna
8 months ago
@univie.ac.at
@meduniwien.ac.at
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reposted by
Sascha Martens
Max Perutz Labs Vienna
8 months ago
📢 Open Call! The Max Perutz Labs invite applications for a Tenure-Track Professorship in Mechanistic Cell and Developmental Biology. More details ➡️
tinyurl.com/3fbkp89c
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Sascha Martens
Christa Buecker
8 months ago
And another opportunity! Any postdocs looking forward to start your lab on a tenure track? Supportive environment, great core facilities and an outstanding PhD program.
add a skeleton here at some point
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Sascha Martens
Gabriele Zaffagnini
9 months ago
📣 Paper alert!! Excited to share the 2nd research paper from my time in the
@bokelab.bsky.social
at
@crg.eu
, out today in the
@embojournal.org
! We asked: "how do human oocytes regulate proteostatic organelles under physiological conditions?" 1/
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Sascha Martens
Sierra Palumbos
9 months ago
Very excited to share my postdoc work- out now at PNAS! Learn more about how neurons facing chronic autophagic stress compensate by upregulating two secretion pathways Autophagic stress activates distinct compensatory secretory pathways in neurons | PNAS
www.pnas.org/doi/10.1073/...
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PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
https://www.pnas.org/doi/10.1073/pnas.2421886122
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Sascha Martens
SFB Targeted Protein Degradation
9 months ago
👏 Big CONGRATS to
@sramundo.bsky.social
for receiving an FWF
@fwf-at.bsky.social
ASTRA Award 🌠✨ See all about it 👇
add a skeleton here at some point
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Sascha Martens
Martin Loose
9 months ago
One of the most exciting discoveries from our lab so far is now online as a preprint! Read a story on how the ParMR and Min systems started to collaborate to create the CorMR cytoskeleton, which now controls cell shape in multicellular cyanobacteria:
www.biorxiv.org/content/10.1...
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Evolutionary repurposing of a DNA segregation machinery into a cytoskeletal system controlling cyanobacterial cell shape
Bacteria, despite their diversity, use conserved cytoskeletal systems for their intracellular organization. In unicellular bacteria, the ParMRC DNA partitioning apparatus is well known for forming act...
https://www.biorxiv.org/content/10.1101/2025.06.27.661541v1
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