Zhicheng Cui | 崔志成

@chen3dem.bsky.social

cyoEM, cell singling across membranes

This one is a bit of a departure from the usual and definitely a work in progress! We found that by using ab initio reconstruction at very high res, in very small steps, we could crack some small structures that had eluded us - e.g. 39kDa iPKAc (EMPIAR-10252), below. Read on for details... 1/x

bioRxiv Biophysics@biorxiv-biophys.bsky.social · 11mo ago

High-resolution ab initio reconstruction enables cryo-EM structure determination of small particles https://www.biorxiv.org/content/10.1101/2025.09.08.674935v1

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...

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...

nature.com

Extremely excited to share that I’m joining Columbia University @columbiauniversity.bsky.social as an Assistant Professor! We will explore how the mobile genome works—how transposons shape us, our DNA and how they can be harnessed to build useful technologies. #NewPI #RNAsky #TEsky thawanilab.org

The Thawani Lab at Columbia University

The Thawani Lab at Columbia University describing their research on mobile genome, cryo-electron microscopy and genome engineering

thawanilab.org

There are days in life that shake you. I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University & academic career... 1/🧵

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Unsolicited writing advice, no #7262: When you're editing a project, try changing the font before you start. It tricks your brain into seeing your words anew, making it easier to spot typos or areas that might need work.

Instead of listing my publications, as the year draws to an end, I want to shine the spotlight on the commonplace assumption that productivity must always increase. Good research is disruptive and thinking time is central to high quality scholarship and necessary for disruptive research.

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Who are some amazing cryoEM/cryoET, mass spec, and light microscopy scientists coming to San Diego for ASCB? I’m making a list for a potential pre-ASCB workshop at UCSD December 13th. Spread the word and let me know if you know a good candidate to speak at such an event!