About us

Our research group is interested in understanding how RNAs change their structures in order to perform function. Until recently, only snapshots of molecules could be observed, hiding their mode of operation. We employ Nuclear Magnetic Resonance (NMR), and other biophysical techniques, to investigate the molecular mechanism of RNA function. When function of these molecular machines becomes apparent, it also provides a variety of unique new drug targets. The lab develops methods in NMR and RNA biochemistry to address these questions. Current projects include viral, bacterial and eukaryotic regulatory RNAs, e.g. microRNAs, ribosomal RNAs or RNA from HBV.


A new Professor in the lab!

Congratulations Katja for this fantastic achievement! Thank you Uppsala University for this great opportunity, and looking forward working with our new colleagues at IMBIM Department this spring!

Goodbye Walter!

After almost 3 years of hard work (and a lot of laugh too) with us, we sadly said Goodbye to Walter who is now pursuing his research adventures on the other side of the globe in The University of Sydney! Wishing you all the best mate!

Welcome Nicola!

We are glad to welcome Nicola from Regensburg University and hoping her master project will be in good SHAPE with Joanna’s help!

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Contact Karolinska Institutet:

Department of Medical Biochemistry and Biophysics (MBB)

Box 23 109 Karolinska Institute SE-104 35

Stockholm, Sweden



Petzold Lab Quarter 9B, Dept. of Medical Biochemistry and Biophysics

Solnavägen 9

171 65 Solna

NMR lab:

SciLifeLab Karolinska Institutet

Tomtebodavägen 23b

171 65 Solna

Contact Uppsala University:

Petzold Lab

Dept. of Medical Biochemistry and Microbiology (IMBIM)

D9:3 BMC, Uppsala University 

Husargatan 3

752 37 Uppsala