Ed Banigan
irate-physicist.bsky.social
Ed Banigan
@irate-physicist.bsky.social
biophysicist
Pinned
Our (Viraat Goel, @andersshansen.bsky.social et al) paper Dynamics of microcompartment formation during the M-to-G1 transition is in this month's @natsmb.nature.com -- thanks to NSMB editors and staff for the cover space and art! www.nature.com/nsmb/volumes...
See quoted posts for quick summary
Reposted by Ed Banigan
We co-submitted this article with the work of @andersshansen.bsky.social , @irate-physicist.bsky.social , and authors, who characterize similar cre microcompartments : rdcu.be/eWK1u
Dynamics of microcompartment formation at the mitosis-to-G1 transition
Nature Structural & Molecular Biology - Goel et al. produce high-resolution three-dimensional genome structure mapping from mitosis to G1 phase to show unseen interactions between enhancers and...
rdcu.be
December 29, 2025 at 1:05 PM
Reposted by Ed Banigan
Happy to share that my postdoc work with @jobdekker.bsky.social is out!
rdcu.be/eWHD2

We characterize interphase chromatin folding programs with distinct modes of mitotic inheritance and identify the chromosome-intrinsic capacity to form a microcompartment of active CREs during mitotic exit.
Interphase chromosome conformation is specified by distinct folding programmes inherited through mitotic chromosomes or the cytoplasm
Nature Cell Biology - Schooley et al. find that mitotically bookmarked loci drive a transient chromosome folding state during G1 entry that is subsequently modulated by factors inherited through...
rdcu.be
December 29, 2025 at 12:39 PM
Reposted by Ed Banigan
🚨Our work on the impact of DNA replication on 3D genome is out in Genome Biology: replication-dependent loop extrusion by sister-forks, wave of replication, no evidence for large-scale replication factory. Great collab with @aurelepiazza.bsky.social. More here: link.springer.com/article/10.1...
December 23, 2025 at 1:04 PM
Reposted by Ed Banigan
Exciting new paper out! @allanaschooley.bsky.social and Sergey Venev led this project that let to the discovery of two chromosome folding programs: one inherited via mitotic chromosomes and one mitotic inherited through the cytoplasm!

www.nature.com/articles/s41...
Interphase chromosome conformation is specified by distinct folding programmes inherited through mitotic chromosomes or the cytoplasm - Nature Cell Biology
Schooley et al. find that mitotically bookmarked loci drive a transient chromosome folding state during G1 entry that is subsequently modulated by factors inherited through the cytoplasm.
www.nature.com
December 22, 2025 at 11:45 AM
Reposted by Ed Banigan
New publication from our lab! Can semiflexible polymers (lamin fibers, dsDNA, actin, etc) alter the shape of elastic shells or lipid vesicles? Indeed, the nematic/random ordering of these polymers on the surface could tune their shapes.
Read more on: pubs.rsc.org/en/content/a...
pubs.rsc.org
December 16, 2025 at 2:02 PM
Our (Viraat Goel, @andersshansen.bsky.social et al) paper Dynamics of microcompartment formation during the M-to-G1 transition is in this month's @natsmb.nature.com -- thanks to NSMB editors and staff for the cover space and art! www.nature.com/nsmb/volumes...
See quoted posts for quick summary
December 15, 2025 at 3:02 PM
Reposted by Ed Banigan
Thrilled to share that my postdoc research is published today in @science.org! We found that DNA repair uses cohesin complexes to build new chromatin loops that guide the homology search and boost accurate repair! 1/n
www.science.org/doi/10.1126/...
Cohesin drives chromatin scanning during the RAD51-mediated homology search
Cohesin folds genomes into chromatin loops, the roles of which are under debate. We found that double-strand breaks (DSBs) induce de novo formation of chromatin loops in human cells, with the loop bas...
www.science.org
December 4, 2025 at 9:50 PM
Reposted by Ed Banigan
Our collab w. V Goel, @nicholas-aboreden.bsky.social , J Jusuf, G Blobel, L Mirny, @irate-physicist.bsky.social out in @natsmb.nature.com www.nature.com/articles/s41...

Was co-submitted with @allanaschooley.bsky.social @jobdekker.bsky.social whose paper should also come out soon

Brief thread 👇
October 20, 2025 at 6:36 PM
October 18, 2025 at 7:09 PM
Reposted by Ed Banigan
The TArgeted Cohesin Loader (TACL) paper was just published. Happy that we were able to contribute to this really exciting project!

If you want to learn how targeting cohesin to defined loci in the genome affects the local chromatin environment and transcription, look no further!

rdcu.be/eLiT5
Characterization of induced cohesin loop extrusion trajectories in living cells
Nature Genetics - This study introduces a system called TArgeted Cohesin Loader (TACL) that recruits cohesin complexes at defined genomic regions and induces loop extrusion events in living cells,...
rdcu.be
October 16, 2025 at 8:17 PM
Previous experiments observed a transient spike in transcription of a subset of genes during ana/telophase. We now observe that these spiking genes are associated with microcompartments that peak in interactions during ana/telo, suggesting a 3D-genome-based mechanism for this transcriptional spike!
October 17, 2025 at 2:58 PM
Excited to share our paper on dynamics of microcompartments during M-to-G1 is now published in @natsmb.nature.com www.nature.com/articles/s41...

Compared to biorxiv, published includes new analysis from James Jusuf and Viraat Goel (from @andersshansen.bsky.social lab) on transcriptional spiking
October 17, 2025 at 2:58 PM
thanks! reading your paper (I see now accepted, congrats) really inspired the approach that made sense of the physics for me
October 1, 2025 at 2:20 PM
I didn’t really complete the thought earlier: these papers point toward some of the key principles governing compartmentalization-extrusion interplay and are definitely worth reading!
September 3, 2025 at 7:48 PM
Postscript: for a long time I was very confused about the PDS5-WAPL depletion expts+sims & how extrusion alters compartments. I was fortunate to eventually stumble across @ranjithpa.bsky.social‬'s preprint www.biorxiv.org/content/10.1... & later this by Chan/Rubinstein www.pnas.org/doi/abs/10.1...
September 3, 2025 at 4:23 PM
I also want to point out another interesting and relevant recent preprint by @elphegenoralab.bsky.social and @gfudenberg.bsky.social
September 3, 2025 at 4:22 PM
Thanks to our other co-authors who had essential contributions: Ryotaro Kawasumi, Roman Stocsits, Wen Tang, Kota Nagasaka, Lorenzo Costantino, Ralf Jansen, Kouji Hirota, Dana Branzei
September 3, 2025 at 4:21 PM
Summary
-PDS5 facilitates NIPBL dissociation from cohesin by invading NIPBL binding site
-PDS5 strengthns CTCF boundaries by limiting NIPBL-cohesin life
-PDS5 lowers avg extrusion speed/depletion ups processivity
-Compartmentalization governed by competition of extrusion &polymer relaxation dynamics
September 3, 2025 at 4:20 PM
Can PDS5 therefore strengthen CTCF boundaries by limiting NIPBL-cohesin processivity (=speed x residence time)?

Hi-C in cells depleted of PDS5 & now partially of NIPBL recover some of CTCF boundaries (+ also compartments)
September 3, 2025 at 4:20 PM
To understand this Iain did 3-color single-molecule expts w/loop-extruding NIPBL-cohesin.
PDS5+NIPBL could colocalize on cohesin leading to NIPBL unbinding! Loops often released but sometimes shrunk & NIPBL returned.
So PDS5 slows loop growth + speeds NIPBL unbinding by facilitated dissociation!
September 3, 2025 at 4:20 PM