(1/n) Very excited to share tri-lab collab (Mirny & Zechner) led by Harvey, Henrik & Jack: Q: How do enhancers & promoters interact in space (contact vs. action-at-a-distance) and time (stable vs. transient)? A: Transient E-P contact (~25-42 nm lasting ~10-20 sec): www.biorxiv.org/content/10.6...

Many of you may have received pessimism from me over the years about using Hi-C to predict distal regulatory effects, mired with paradoxical optimism that cohesin loop extrusion is key. Well, the theoretical story underlying my seemingly paradoxical rambling is finally ready to be told. 👇

Why can't we explain enhancer action despite 2 decades of chromosome conformation technologies? 😬 Our new study spearheaded by Leonid Mirny's group points to a flaw in our assumptions, and to a solution from physical principles By @timothyfoldes.bsky.social 💻& @karissalhansen.bsky.social 🧪 🧵👇

Is distal gene activation by enhancers inherently different from promoter-proximal activation? We propose not. But both cohesin and cooperativity are important aspects of how transcription is affected. Happy to share our recent preprint (thread below) 1/ www.biorxiv.org/content/10.6...