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Biswajit Pradhan

@bislightyear.bsky.social
179 followers 158 following 22 posts

Postdoc at MPI Biophysics. DNA, SMC, Chromosome Organization, Nanoscience, Single-Molecule Biophysics. www.biswajit.de

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Reposted by Biswajit Pradhan
Stephan Gruber @gruberlab.bsky.social · 25/11/2025
The hinge bypass gate paper is finally out! doi.org/10.1038/s414... We show how loop-extruding SMC complexes can maintain DNA entrapment while bypassing obstacles on DNA — including transcription machinery & potentially other SMCs. A lucky convergence of 3 projects lead to the initial discovery!
doi.org
The SMC Hinge is a Selective Gate for Obstacle Bypass - Nature Communications
SMC complexes are ring-shaped motors that fold DNA by extruding loops, but how they navigate large DNA obstacles is unclear. Here, Liu et al., show that SMC complexes bypass obstacles by threading obs...
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Melanie McDowell @melaniemcdowell.bsky.social · 30/10/2025
Our first lab paper is out! We identify and solve the first structure of the SND3 translocon involved in fungal membrane protein insertion. Congratulations @tzujingyang.bsky.social, and our colleagues @saumyakm.bsky.social, @hummerlab.bsky.social and Julian Langer. Read more ⬇️ and ➡️ rdcu.be/eNgIO
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Florian Roisné-Hamelin @roisnehamelinf.bsky.social · 09/10/2025
Delighted to announce our latest work on how Wadjet loads onto and establishes topological entrapment of plasmid DNA prior to initiating loop extrusion. At @gruberlab.bsky.social, Dubochet Center for Imaging and BSI @igbmc.bsky.social www.cell.com/molecular-ce...
cell.com
Mechanism of DNA entrapment by a loop-extruding Wadjet SMC motor
Wadjet is an SMC-based prokaryotic defense system that eliminates plasmid DNA. Roisné-Hamelin et al. present structures capturing key steps of its DNA-loading mechanism. This work reveals how Wadjet t...
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Biswajit Pradhan @bislightyear.bsky.social · 10/10/2025
Amazing WadjetSMC-DNA gymnastics! fantastic data from @roisnehamelinf.bsky.social , @gruberlab.bsky.social and their team.
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Stephan Gruber @gruberlab.bsky.social · 05/09/2025
Our Wadjet-II paper by @roisnehamelinf.bsky.social is out in polished form: www.cell.com/structure/fu... With a great preview by @kevincorbett.bsky.social & @amardeeep.bsky.social highlighting the potential of Wadjets: Wadjet—Keeping a watchful eye on circular DNA. www.cell.com/structure/fu...
cell.com
Structure of a type II SMC Wadjet complex from Neobacillus vireti
Wadjet are SMC-based prokaryotic defense systems that cleave plasmid DNA. Roisné-Hamelin et al. reconstitute a type II Wadjet and demonstrate that it exhibits substrate selection and cleavage properti...
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Murphy Lab @bjmurphylab.bsky.social · 31/01/2025
Congrats, Max! And big thanks and congratulations to our coauthors at MPI for Marine Microbiology, Bremen, MPI-CBG in Dresden, and in-house at the MPI of Biophysics! It's been great working with you all! @mpimarinemicrobio.bsky.social, @mpicbg.bsky.social sky.social, @hummerlab.bsky.social
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Wilfling Lab @wilflinglab.bsky.social · 08/01/2025
Check out our latest publication in @naturecellbiology.bsky.social on the role of phase separation in selective autophagy initiation! This was done in a fantastic collaboration with ‪@kraftlabfr.bsky.social‬ www.nature.com/articles/s41... Short teaser below 👇👇👇
nature.com
Phase separation of initiation hubs on cargo is a trigger switch for selective autophagy - Nature Cell Biology
Licheva, Pflaum, Babic, Mancilla et al. show that low-affinity cargo–receptor interactions promote autophagy receptor mobility and condensation of the scaffold protein Atg11 to trigger initiation hub ...
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Luuk Loeff @lloeff.bsky.social · 31/12/2024
What a great way to end the year! ✨ Today in @cellpress.bsky.social we report the structure and function of the Shedu anti-phage defense system. tinyurl.com/4crj6dnx A long 🧵...
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Sergii Pud @sergiipud.bsky.social · 20/12/2024
Hi all, I am very excited to share two positions (PhD and PostDoc) in my group on a EU-funded project ProAct. More about the positions below. Please share with your colleagues! This will be a great project to work on and also we offer a great environment at the BIOS group
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The EMBO Journal @embojournal.org · 18/12/2024
Chromokinesin KIF4A activation of human condensin I involves a SLiM interfering with auto-inhibitory intramolecular interactions in the condensin complex, exemplifying a conserved mechanism for regulating diverse SMC complexes @eecutts.bsky.social, Luis Aragon et al www.embopress.org/doi/full/10....
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Erin E. Cutts @eecutts.bsky.social · 16/12/2024
Please share: Still plenty of time to apply for PhD projects in my lab using single-molecule methods to look at disordered regions and condensin complexes! Contact me at e.cutts@sheffield.ac.uk For details on how to apply: www.findaphd.com/phds/project...
findaphd.com
Developing Imaging Solutions to Study the Dynamics of Human Condensin I at University of Sheffield on FindAPhD.com
PhD Project - Developing Imaging Solutions to Study the Dynamics of Human Condensin I at University of Sheffield, listed on FindAPhD.com
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Zebrafish Rock! @zebrafishrock.bsky.social · 15/12/2024
Heartbeat of an early zebrafish embryo. Credit to Drs. Fengzhu Xiong & Sean Megason @harvardmed.bsky.social. #ZebrafishZunday 🧪
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Arjen Jakobi @cryotud.bsky.social · 10/12/2024
We have an opening for a 4 yr PhD interested in membrane remodelling and cryo-EM/ET of a minimal cell division machinery: edu.nl/bukan You will be part of the EVOLF consortium in which 30 leading biochemists/biophysicists work together to explore if and how we can build autonomous synthetic cells.
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Ed Banigan @irate-physicist.bsky.social · 04/12/2024
topology sensing, very cool! another job for loop extrusion!
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Drew Berry wehi.tv @drewberry.bsky.social · 04/12/2024
Delighted to publish my new molecular animation: DNA Break Repair by Homologous Recombination youtu.be/Xe-83tBcxhs
youtu.be
DNA Break Repair by Homologous Recombination (2024) Drew Berry wehi.tv
YouTube video by WEHImovies
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Amar Deep @amardeeep.bsky.social · 03/12/2024
Excited to share this work, now out in Molecular Cell. This was a fun collaboration between the Corbett lab and Kim lab.
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Biswajit Pradhan @bislightyear.bsky.social · 03/12/2024
It's awesome that most of the coauthors are on Bluesky! 🤩 I had so much fun learning, collaborating with @amardeeep.bsky.social from @kevincorbett.bsky.social lab. Thanks to @jessicakoenig.bsky.social and Martin Baaske from @eugenekimlab.bsky.social
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Eugene Kim Lab @eugenekimlab.bsky.social · 03/12/2024
Our work on SMC Wadjet is finally out! Congrats to all co-authors!
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Biswajit Pradhan @bislightyear.bsky.social · 02/12/2024
Happy to see our research on SMC Wadjet published in Molecular Cell. We showed DNA loop extrusion (LE) by a bacterial SMC, confirming LE is conserved across all life forms. Wadjet's LE activity is crucial for recognizing and restricting foreign plasmids, serving as a defense mechanism. 🧬🔬🧪
Graphical abstract showing the loop extrusion mechanism of the Wadjet complex, which selectively cleaves circular DNA while leaving linear DNA unaffected.
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Cees Dekker @ceesdekker.bsky.social · 27/11/2024
Latest #CDlab paper in Nucleic Acid Research: academic.oup.com/nar/article/... Great work by Alejandro Martin-Gonzalez, @tismaa.bsky.social ea collaboring with @gruberlab.bsky.social, showing the interplay of DNA supercoiling & ParB condensation, 2 processes that set bacterial genome organization.
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Teun Huijben @teunhuijben.bsky.social · 26/11/2024
PSFs are just Gaussians, right?? Not when your fluorophore💡is close to a nanoparticle 🟠! Excited to share our recent ACS Nano paper 🥳 in which we present a novel PSF-fitting approach for localization microscopy near nanoparticles. pubs.acs.org/doi/full/10.... Main findings below in🧵[1/10]
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Josien @joscience.bsky.social · 26/11/2024
🧠🔬Using long GRIN lenses and notice that cells look good in the middle, but vague on the sides? My lab developed corrected lenses, which increases the FOV and thus number of neurons recorded! Check out this new publication: elifesciences.org/reviewed-pre... #microscopy #inscopix
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Ellenberg Lab @ellenberglab.bsky.social · 25/11/2024
We are now on Bluesky! Follow us for exciting #Science around #CellDivision and nuclear organization, illuminated using advanced #imaging #technology - like our last preprint on mitotic chromosome structure and organization: tinyurl.com/yaznnkku
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Loïc A. Royer 💻🔬🧪 @loicaroyer.bsky.social · 23/11/2024
I just created a Microscopy feed that tracks anything that has a cute 🔬 emoji on it as well as the simple #microscopy and #imaging tags. Enjoy! bsky.app/profile/did:...
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Hank Green @hankgreen.bsky.social · 21/11/2024
Post a non-religious photo you think of as holy.
The first x-ray crystallograph, taken by Max Laue, which proved that x-rays were rays, confirmed the existence of atoms, and led to literally dozens of Nobel prizes and the uncovering of the structure of DNA. It looks like a big dot at the center surrounded by symmetrical scatterings of different sized dots.
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Robert Haase @haesleinhuepf.bsky.social · 19/11/2024
Hello world, my name is Robert and I'm a Senior Researcher and the Training Coordinator at scads.ai I work in #BioImage #DataScience + as I love #openscience you can download this notebook and this text-embedding and explore my training materials yourself. 🔬🖥️🔓 github.com/haesleinhuep...
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