Meghna Gupta

Excited to share the peer-reviewed version of our work, now online in @embojournal.org! Big thanks to our reviewers and @hvodermaier.bsky.social for facilitating this process. Looking forward to continuing this fun collaboration with @michaelnadbio.bsky.social!
www.embopress.org/doi/full/10....

Candid photo of Zara Weinberg. She has short red hair, bangs and glasses. She is laughing.

The Leading Edge Fellows gathered this week to celebrate Zara Weinberg, a beloved member of our community. Our 7th cohort of Leading Edge Fellows (2026) will be named in her honor.

The Zara Weinberg Leading Edge Cohort application is now open! Due Feb 2.

www.leadingedgesymposium.org/apply/

Zara Weinberg passed away earlier this week. She joined my lab earlier this year when her postdoc lab formally closed.
She was a brilliant scientist, supportive mentor, dear friend, avid music fan, rabid believer in public transit, open science champion, and above all just an amazing human.

Zara Weinberg was a brilliant light both in and out of science. She changed the lives of everyone she interacted and loved for the better. Her legacy will live on through all of us and we will fight for a better world on behalf of her memory.

Enteropathogenic bacteria evade ROCK-driven epithelial cell extrusion - Nature The bacterial ubiquitin ligase NleL evades host defence mechanisms both by inhibiting pyroptosis and by preventing infected intestinal epithelial cells from being extruded into the lumen and expelled ...

Check out our new publication, a collaboration with Giovanni Luchetti and Vishva Dixit @ Genentech.
We show that the E.coli effector NleL inhibits intestinal epithelial cell extrusion after #inflammasome activation via degrading the kinases ROCK1 and 2!!
www.nature.com/articles/s41...

Explainer 1/8

Structural basis of T-loop–independent recognition and activation of CDKs by the CDK-activating kinase Cyclin-dependent kinases (CDKs) are prototypical regulators of the cell cycle. The CDK-activating kinase (CAK) acts as a master regulator of CDK activity by catalyzing the activating phosphorylation o...

Now out in Science! Cyclin-dependent kinases (CDKs) are key regulators of the cell cycle. In @vcushing.bsky.social's magnum opus, we use #cryoEM to figure out how the CDK-activating kinase recognises CDKs to fully activate them - a key step in cell cycle control.
www.science.org/doi/10.1126/...

Nominations for the June Almeida award for Mid/Senior-Career Women in Cryo-EM are now open! Submit your nomination via this link www.biophysics.org/awards-fundi... by November 14th to recognize an exceptional woman in our community.

To the incredible organizers, enthusiastic participants, and sponsors: thank you for creating this space and fostering such a vibrant community!
#cryoEM #wemconference2025 @ohsunews.bsky.social

er-c.org/index.php/co...

Events celebrating women in electron microscopy are rare, which made my recent experience at the Ernst Ruska-Centre (ER-C), Forschungszentrum Jülich, Germany, truly special. I had the privilege of not only attending but also serving as a young keynote speaker at this inspiring gathering. 🎉

Lab’s 1st preprint!

Menstruation is understudied due to societal taboos + a biological challenge: mice (a key system for research + drug discovery) don’t menstruate.

@cagricevrim.bsky.social made menstruating mice + used them to discover early events in menstruation.

He is on the job market!

Activation of kainate receptor GluK2–Neto2 complex - Nature Structural & Molecular Biology Gangwar et al. present cryo-electron microscopy structures of GluK2 kainate receptors with auxiliary subunit Neto2 and reveal the basis of receptor activation.

Curious to know how does auxiliary subunit Neto2 modulate kainate receptor (KAR) function? Read our latest study describing GluK2-Neto2 complex-captured in both its activated and true apo states.

www.nature.com/articles/s41...

I'm excited to share that I've started my lab @stanford.edu in the Neurobiology Department! neurobiology.stanford.edu/who-we-are/f...

#stanford #newPI #neuroscience

Out today in @nature.com: Together with the Honigmann, Shevchenko, Drobot and Hof labs, we present a general workflow for imaging the localization and transport of individual lipids in cells and mapping their metabolism.
www.nature.com/articles/s41...

Upper - cryo-EM reconstruction of stomatin AQP1 complex. Lower - reconstruction of stomatin-UT-B complex.

Happy to share a new preprint from the Clarke & Vallese (@fravallese.bsky.social) labs reporting #cryoem structures of two RBC stomatin complexes – with AQP1 & UT-B - continuing the SPFH theme from our recent vault preprint! This was a fun one and has been cooking for a while - read on for more! ⬇️

Thrilled to be heading to Spain next week to speak at the EMBO Workshop on Peroxisomes! 🧫🔬👩‍🔬

Looking forward to sharing our latest research and learning from incredible scientists working on these fascinating organelles.
#peroxisomes #EMBOmeeting #cellbiology
meetings.embo.org/event/25-per...

Leopard-EM: An extensible 2DTM package to accelerate in situ structural biology The ability to generate high-resolution views of cells with cryogenic electron microscopy (cryo-EM) can reveal the molecular mechanisms of biological processes in their native cellular context. The re...

First pre-print from the Lucas Lab led by Matthew Giammar and @joshdcryoem.bsky.social online today! We develop a new, extensible Python implementation of 2DTM and apply it to build pixel size optimization, constrained search and characterize molecular motions in situ www.biorxiv.org/content/10.1...

A photo of a newly renovated science lab with metal cabinets and tile floors. Select pieces of equipment such as test tube racks and chairs are visible.

Excited to announce the opening of the @fitzsimmonslab.bsky.social at @michiganstateu.bsky.social dept. of biochemistry & molecular biology! (1/3)

An individual in a blue shirt and sweatshirt stands in front of a machine with the words "Titan Krios" on the side.

@ohsunews.bsky.social neuroscientist Dr. Eric Gouaux has earned a rare distinction as a two-time recipient of the Javits Neuroscience Investigator Award from the National Institute of Neurological Disorders and Stroke! news.ohsu.edu/2025/06/23/o...

Have you published lipid-protein interactome data? Please let us know, we’d love to include it in the repository. The goal is to build a centralized hub for the scientific community.

Huge thanks to Gaelen Guzman, a graduate student/postdoc in the lab who built it from scratch.

Take charge of your #brain health!

Join us for a community conference on brain health, #aging and Alzheimer's science. Each event features Alzheimer's and dementia resources in Oregon and Southwest Washington.

Learn more and find an event near you: bit.ly/brainhealth25

Registration for the 2025 Chemical Biology and Physiology meeting is open! This biennial symposium features the latest and most impactful work in chemical biology. Dec. 11-13 2025 in Portland, Oregon (USA). Register here: www.ohsu.edu/school-of-me...
Pls share

📣 New paper alert! Just out in Cell Reports! pubmed.ncbi.nlm.nih.gov/40644298/
Thrilled to share that we have discovered a brand-new anti-phage defense system! Bacteria have evolved various defense strategies (CRISPR etc) to counter phage attacks. We found a new one - fascinating and dramatic
⚔️🦠❄️🔬

Portrait of Dr. Shivaani Kummar smiling with text below reading, "Shivaani Kummar, M.D., FACP 2024 Director's Award National Cancer Institute." There is a white OHSU logo above the portrait. The background image is a photo of the OHSU Knight Cancer Research Building with a white-to-blue gradient across it.

Congratulations to Dr. Shivaani Kummar on being honored with the prestigious 2024 National Cancer Institute Director’s Award!

The award is one of the NCI’s highest accolades and is bestowed upon those who demonstrate excellence, innovation, and commitment throughout their organization.

DNA Methylation Ageing Atlas Across 17 Human Tissues https://www.biorxiv.org/content/10.1101/2025.07.21.665830v1

Thank you to the organizers for inviting me to speak at the 2025 FASEB: Optical Probes meeting. Stunning desert location. #OPTSRC

Check out our new study revealing how yeast cells regulate oxidative stress.

Bill Rutter passed away at age 97 yesterday. He chaired our Department through the 1970s and was instrumental in the development of UCSF basic science. He hired Christine Guthrie, Keith Yamamoto, Bruce Alberts, Marc Kirschner, Pat O’Farrell, Peter Walter, Ira Herskowitz among others.

Congratulations!! 🎉🎊

Excited to contribute to the Mitoribosome collaborative study led by @wredenberglab.bsky.social in @natcomms.nature.com🎉 "The mitochondrial methylation potential gates mitoribosome assembly"
The assembly starts before the completion of the rRNA gene cluster processing🧵
www.nature.com/articles/s41...

We have a preprint for you

EHD2 forms rings on caveolae necks, in contrast to most EHDs forming helices. We determined its structure on membranes and show that N-term acts as a spacer

By Elena, Vasya @vasiliimikirtumov.bsky.social, Jeff &Oli Daumke www.biorxiv.org/content/10.1...