Biopolymers and redox enzymes 

Our research is focused on the enzymes that catalyse degradation of plant cell walls in nature as well as in industrial biorefineries.

The aim is to both understand the molecular mechanisms and the systems in which the enzymes work. Our laboratories are equipped with specialised instruments that allow for study the role of oxygen in the degradation processes.


Special attention is given to enzymes called lytic polysaccharide monooxygenases (LPMOs). These enzyme are mononuclear copper enzymes that use oxygen-species for catalysis.

LPMOs are likely to have several functions in biology and are important for saprotrophic fungal lifestyle. Importantly, they initiate degradation of cellulose by cleaving glycosidic bonds at places that are not accessible cellulose hydrolases.


NNF Synergy grant "Mechanisms of lytic polysaccharide monooxygenases in fungal pathogenesis: directing polysaccharide structure and metabolism in Cryptococcus neoformans". NNF grant number NNF21OC0070070.
The project will run from the 1 April 2022 - 31 March 2026. 
Contact: Katja Salomon Johansen

Oxygen Constraints on Microbial Secretomes during Plant Cell Wall Turnover
Contact: Katja S. Johansen

Harnessing the Oxidative Power of Enzymes
Contact: Katja S. Johansen



Name Title Phone E-mail
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Anne Blicher Laboratory Technician +4535328028 E-mail
Helle Jakobe Martens Associate Professor +4528960218 E-mail
Jonas Thomsen Research Assistant   E-mail
Magnus Hallas-Møller Assistant Professor +4535332313 E-mail
Radina Tokin Postdoc +4535326455 E-mail
Signe Lett Assistant Professor +4535326162 E-mail
Søren Brander Assistant Professor +4535331261 E-mail
Søren Michael Nielsen Laboratory Technician +4535336197 E-mail
Tania Fredborg Nielsen Special Consultant +4535331280 E-mail

Head of Research Group

Katja Salomon JohansenKatja Salomon Johansen
+45 35 33 37 06