Katrin_Ackermann

Our latest CRISPR ring nuclease paper focusses on Csx15 - which seems to act as of a sponge as well as a canonical phosphodiesterase. Great work led by @haotianchi.bsky.social

www.biorxiv.org/content/10.6...

Officially inducted as Professor of the University of St Andrews today. @uniofstandrews.bsky.social @st-andrewschem.bsky.social This would not have been possible without the contributions co-workers and collaborators past and present. Many thanks to you all.

Many congratulations Nino! 👏🎉👏

Careers

Bruker Corporation | Career | EPR Application Scientist (m/f/d) in Ettlingen, Baden-Württemberg | Careers at DE, Ettlingen

germancareers-bruker.icims.com/jobs/18525/e...

Fantastic news! 🎉 Our University is ranked #2 in the UK in both the Guardian University Guide 2026 and Times & Sunday Times Good University Guide 2026. Special congratulations to Chemistry – #1 in the UK (Times) and #2 (Guardian)! 👏👏

Chiral molecular 4f qubits by post functionalization We herein demonstrate the synthesis of a pair of enantiomerically pure YbIII complexes by post-functionalisation of the parent YbIII complex via condensation with an enantiomerically pure chiral amine...

A new paper 📜 with the Piligkos Lab at DTUpublished in ‪@inorgchemfront.rsc.org‬ We show that Chiral molecular 4f qubits retain properties suitable for quantum information processing. Thanks to all involved. ⚛️ 🧪 doi.org/10.1039/D5QI...

Toward Generalized Solution-State 1H DNP NMR via Particle-Mediated Cross-Relaxation This study discusses a potential route for enhancing 1H NMR signals in the liquid phase at high magnetic fields for samples on the 100 μL volume scale using dynamic nuclear polarization (DNP). The approach involves dispersing an inert powder that is both rich in protons and capable of undergoing DNP with good efficiency at noncryogenic temperatures, and letting the solid 1H polarization thus enhanced pass from the dispersed particles onto the surrounding liquid via spontaneous cross relaxation effects. To this end, BDPA-doped polystyrene (PS) particles in the μm range were suspended in 30 μL of heptane, loaded into 3.2 mm sapphire rotors, and spun at ≈500 Hz for homogeneity purposes in a 14.1 T magnet. Irradiation with ≈13 W at 395 GHz while maintaining temperature in the 185–220 K range thus enhanced the PS proton polarization ≈12-fold within ≈2 s; after ca. 6 s of irradiation, this resulted in ca. 3-fold enhancements of the heptane proton resonances, while preserving their ≤2 Hz line widths. The conditions over which such particle-mediated transfer occurs were explored over a range of sample composition, deuteration and molecular weight; best results were obtained when polarizing a ball-milled powder made of deuterated-PS/PS/BDPA = 86.4/9.6/4.0 suspended on perdeuterated heptane-d16. While the solution-state enhancements provided by this approach are still relatively modest, its generality could open new avenues in DNP-enhanced 1H NMR that do not sacrifice on the volumes, on the high-resolution conditions, or on the multiscan averaging that is customary in contemporary applications.

New paper out in J. Phys. Chem. Lett.: Toward Generalized Solution-State ¹H DNP NMR.
BDPA-polystyrene boosts ¹H ~12× in 2s, transfers ~3× to liquids in 6s
🔗 pubs.acs.org/doi/full/10....
#NMR #DNP #Hyperpolarization

🤣 They have never ever got my name correct. If I make up a name they take so long I have forgotten by the time the drink is ready. The only solution is to avoid them altogether...

Many thanks Dongmei, Alan, and @belab.bsky.social !

Happy International Women's Day 2025!
So happy to have contributed an article in
@daltontrans.rsc.org for their Themed Collection:
doi.org/10.1039/D4DT...
#EPR #ESR @st-andrewschem.bsky.social

Last paper of 2024. A combination of ENDOR and PELDOR pulse EPR methods to investigate preorganisation and conformational flexibility in a fluoride sensing riboswitch.
@st-andrewschem.bsky.social @ackermannkatrin.bsky.social @angewandtechemie.bsky.social

Broad substrate scope C-C oxidation in cyclodipeptides catalysed by a flavin-dependent filament - Nature Communications Cyclodipeptide oxidases are filamentous enzymes. Here, the authors dissect the mechanism of a promiscuous flavoenzyme from the biosynthesis of cyclodipeptide natural products, unveiling fast catalysis...

The 2nd paper of 2025 with some #EPR contribution of us showing a radical in the cyclodipeptide oxidase reaction that is dependent on substrate.
doi.org/10.1038/s414...

@ackermannkatrin.bsky.social
@st-andrewschem.bsky.social

conference poster

the 58th Annual International Meeting of the RSC ESR spectroscopy group at University College London, 1st to 5th June, 2025 www.esr-group.org/conferences/... #NMRchat #NMR #ESR #EPR 🧲

This cartoon is from 1930.

It could have been today.

Hello world

I am an #EPR spectroscopist interested in biophysical chemistry and catalysis.

I signed up here some time ago but now I stopped using the other place.

I could not bear the landlord anymore.🐦

Lecturer in Organic Chemistry - AC2577LS at University of St Andrews An academic position as a Lecturer in Organic Chemistry - AC2577LS is being advertised on jobs.ac.uk. Click now to find more details and explore additional academic job opportunities.

@uniofstandrews.bsky.social looking to hire a lecturer in organic chemistry. A fantastic place to work with wonderful students and colleagues. www.jobs.ac.uk/job/DKW116/l... 🧪 ⚗️ #chemsky

University of Reading proposes closing its chemistry department next year The university joins several others that are considering the future of their departments and undergraduate programmes

Chemistry degrees have some of the highest values of any degree and are vital if we want to build a competitive high-tech nation. But they are expensive, and so if universities want to save money quickly they will just ignore national priorities and close them.
www.chemistryworld.com/news/univers...

Hello Bsky - just migrated here.

Little introduction:
Biochemist, working on biomolecular applications of #EPR #ESR, senior research fellow in Chemistry at St Andrews University, Scotland.
Enjoy things like long walks along the beach and some good food afterwards.