Michelle Frei

@michellefrei17.bsky.social

Chemical biologist working on tools for fluorescence microscopy | Assistant Professor ETH DCHAB | Postdoc UCSDPharm | PhD MPI-MR and EPFL

📢 I'm thrilled to announce that I'll be joining the HHMI Janelia Research Campus as a Group Leader in MTI! It's an honor to be part of Janelia's Next Chapter, pushing dye development and imaging technologies into new dimensions. The Lincoln Lab launches Sept. 14th, stay tuned for more info! 🔬⚗️👨🏼‍🔬

Still obsessed with histidine (and its mimics)! Our latest work from Benjamin 🎉 uses genetic code expansion—tuning the primary coordination sphere of a dizinc metallohydrolase—lowering the catalytic pKa and boosting activity up to 5x at acidic pH. Check it out! doi.org/10.1021/acs.biochem.5c00768

Catalytic pKa Attenuation in a Hydrolytic Metalloenzyme by Genetic Code Expansion

Hydrolytic metalloenzymes employ Lewis-acidic metal cofactors to activate water molecules, generating nucleophilic hydroxide species that facilitate catalysis. Their catalytic efficiency across a wide...

doi.org

🚨 Are you in need of a sensitive ratiometric protein kinase A (PKA) biosensor? 🚨 We got you covered: far-red, large changes, rapid response kinetics, selective! Anything you could wish for. Check out these two preprints from the Zhang Lab 🧪 🧑‍🔬 Congrats to everyone involved!

Jin Zhang Lab @jinzhanglab.bsky.social · 8mo ago

🚨🚨Double preprint alert! 🚨🚨 Two papers went up on Biorxiv this week! The first presents new chemigenetic FRET-based biosensors: www.biorxiv.org/content/10.6... And the second presents an improved version of our C-Y FRET PKA reporters, AKAR6 www.biorxiv.org/content/10.6... Thread 🧵 1/5

We have multiple PhD and Postdoc positions open in my new group at Masaryk University. Are you an excellent and motivated candidate interested in organic and peptide synthesis and chemical biology? Get in touch! Start in January 2026. www.fialalab.com Appreciate sharing!

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🔥 We've already received over a third of pre-registrations! #Mifobio2025 is already shaping up to be a highly attractive event... Don't delay in pre-registering! 👉 imabio-cnrs.fr @cnrs.fr @cnrsbiologie.bsky.social @cnrsingenierie.bsky.social @cnrs-inist.bsky.social

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GdR ImaBio 🔬@gdrimabio.bsky.social · last yr.

🔥It's D-day. We're opening pre-registration for #Mifobio2025 today🔥 👉 This is the 11th edition of the Thematic School! All the relevant information, as well as the pre-registration form, is easily accessible on imabio-cnrs.fr but only if you are logged on this site. 👉Deadline June 10, 2025 ❗

Want to be part of the 5th Virtual ChemBio Talks? Submit you abstract until 📅 June 30th. Two amazing keynote speakers @oconnorlab.bsky.social and @craigmcrews.bsky.social are already confirmed. More coming soon. Stay tuned! ⚗️👩‍🔬🦠🧑‍🔬

Virtual ChemBioTalks@chembiotalks.bsky.social · last yr.

Do you want to present your #ChemBio research to a global audience at the 5th Virtual ChemBio Talks? If you are a #PhD or #postdoc, here is your chance! Apply for a Flash Talk via our abstract challenge. Deadline is June 30th. #ChemSky chemistry-europe.onlinelibrary.wiley.com/hub/journal/...