Souradip Paul

@indiasouradip.bsky.social

PhD student at CSIR-IICB

Congrats to our talented postdoc @amirbitran.bsky.social for his first preprint in the lab, a collaboration with the Bustamante lab, studying time-resolved protein folding during translation elongation with HDX-MS! Check out the attached manuscript and tutorial for more:

Amir Bitran@amirbitran.bsky.social · 3mo ago

I am delighted to share that my newest manuscript and the first of my postdoc in the Marqusee and Bustamante labs, “A detailed molecular picture of protein folding during active translation”, is now on the BioRXiv! (1/n) www.biorxiv.org/content/10.6...

Thrilled to see our Deep-Phase paper now online in @cellcellpress.bsky.social! 🎉 The final version expands Deep-Phase across labeling modalities, adds dual-condensate imaging to dissect pathway specificity, and shows greater robustness to batch effects than classical image-analysis methods.

Deep learning of functional perturbations from condensate morphology

A deep learning method quantitatively decodes nucleolar, nuclear speckle, and viral condensate morphology to reveal underlying biochemical states. Applying this framework reveals a previously unrecogn...

cell.com

DNA-PAINT with photocaged DNA labels = PhotoPAINT🔬. Why? No need for washing or mixing 👉🏻 higher accuracy in DNA-PAINT & other super-res methods. Fantastic collab with Alex Heckel & driven by the 'magic team' Nina Kaltenschnee and Marina Dietz 💪 doi.org/10.1002/anie... @goetheuni.bsky.social

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Heilemann Lab@heilemannlab.bsky.social · 8mo ago

🔬we have been playing with 'an old tool from (DNA) chemistry' 🧪 and used that for DNA-based confocal/super-res microscopy ... these are the last recordings for the revision and were recorded last night ... 🙏 thanks to R1 for this suggestion:

Our work on how oligomerization can enable selectively targeting intrinsic disorder with small molecules is now out in Science Advances: www.science.org/doi/10.1126/...). Congratulations Stase Bielskute and @borjaml.bsky.social and thanks to the collaborators and funders !

Oligomerization enables the selective targeting of an intrinsically disordered region by a small molecule

The druggability of intrinsically disordered regions.

science.org

I’m thrilled to share that my PhD work has been just published in Cell. After a long and bumpy ride, we uncovered the core function of nuclear speckles -splicing of GC-levelled exons- and traced the evolution of this gene architecture and condensates themselves to amniotes.

Graphical abstract: Speckle-proximal and speckle-dependent RNA has short introns, and simultaneous emergence of multiple exons requires heightened concentration of spliceosome components.
Speckle-independent RNA has long introns and can be spliced well with or without speckles
Speckle dependent introns evolved in amniotes. The reduction in intron length was accompanied by the increase of the intronic GC content, giving rise to GC-levelled intronic architecture. This exon-intron architecture is not present outside of amniotes (Fish, Invertebrates), and these organisms lack nuclear speckles.
Tugce Aktas@aktast.bsky.social · 7mo ago

Our most recent work on the “function and evolution” of #nuclear-speckles is now online at Cell @cp-cell.bsky.social doi.org/10.1016/j.ce... Read the thread👇 for the highlights of our findings.

Our "Roadmap for Condensates in Cell Biology" is now available on arXiv: arxiv.org/abs/2601.03677 🎉 This article summarizes the interdisciplinary weekly discussions we had at our condensate workshop at KITP in the summer of 2025. Feedback is very welcome!

Roadmap for Condensates in Cell Biology

Biomolecular condensates govern essential cellular processes yet elude description by traditional equilibrium models. This roadmap, distilled from structured discussions at a workshop and reflecting t...

arxiv.org

Our review on the physics of phase separation in cells has been published by Rep. Prog. Phys. 🎉 doi.org/10.1088/1361... We hope that the text and citations are helpful for anyone interested in physical descriptions of condensates in cells!

Physics of droplet regulation in biological cells - IOPscience

Physics of droplet regulation in biological cells, Zwicker, David, Paulin, Oliver W, ter Burg, Cathelijne

doi.org

Zwicker Group@zwickergroup.bsky.social · 2y ago

We wrote a review on the "Physics of droplet regulation in biological cells": arxiv.org/abs/2501.13639 Beside the basic #physics of phase separation, we discuss three aspects that separate cellular from traditional droplets:

A schematic picture of a cell, showing condensates, a nucleus and the cytoskeleton.