Agnes Beenfeldt Petersen
About
The polysaccharides alginates are found in seaweed and some soil bacteria. Alginates are industrially important because of their gelling and emulsifying properties. For example, alginate is used as a thickening agent in food and for biomaterials for medicinal use. My PhD is about alginate-modifying enzymes, which are enzymes we can use to optimise alginate, so that it gets the chain-length and composition, that we want. My main goal is to characterise how alginate lyases and epimerases work by better understanding their structure-function relationship. I work with enzymology and NMR spectroscopy, and with many different methods in general. My project is in collaboration with SINTEF Industry, DTU (Denmark), and Station Biologique de Roscoff (France).
I have a master’s in applied chemistry from DTU (Denmark), where I worked with biochemistry and organic and analytical chemistry. My master thesis was about the enzyme BeKdgF, which contributes to the degradation of alginate.
Competencies
Publications
2025
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Spannenkrebs, Jan Benedict;
Petersen, Agnes Beenfeldt;
Aachmann, Finn Lillelund;
Kabisch, Johannes Fritz.
(2025)
Immobilization of alginate C-5 epimerases using Bacillus subtilis spore display.
Applied and Environmental Microbiology
Academic article
2024
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Rønne, Mette Errebo;
Andersen, Christian Dybdahl;
Teze, David;
Petersen, Agnes Beenfeldt;
Fredslund, Folmer;
Stender, Emil G.P..
(2024)
Action and cooperation in alginate degradation by three enzymes from the human gut bacterium Bacteroides eggerthii DSM 20697.
Journal of Biological Chemistry
Academic article
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Gravdahl, Mina;
Aarstad, Olav Andreas;
Petersen, Agnes Beenfeldt;
Karlsen, Stina Grønbeck;
Donati, Ivan;
Czjzek, Mirjam.
(2024)
A chemo-enzymatic method for preparation of saturated oligosaccharides from alginate and other uronic acid-containing polysaccharides.
Carbohydrate Polymers
Academic article
2023
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Petersen, Agnes Beenfeldt;
Tøndervik, Anne;
Gaardløs, Margrethe;
Ertesvåg, Helga;
Sletta, Håvard;
Aachmann, Finn Lillelund.
(2023)
Mannuronate C-5 epimerases and their use in alginate modification.
Essays in Biochemistry
Academic literature review
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Petersen, Agnes Beenfeldt;
Mirbarati, Seyed Hossein;
Svensson, Birte;
Duus, Jens Øllgaard;
Teze, David.
(2023)
The Engineered Hexosaminidase TtOGA-D120N Is an Efficient O-/N-/S-Glycoligase That Also Catalyzes Formation and Release of Oxazoline Donors for Cascade Syntheses with Glycosynthases or Transglycosylases.
Biochemistry
Academic article
2022
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Petersen, Agnes Beenfeldt;
Christensen, Idd Andrea;
Rønne, Mette E.;
Stender, Emil G. P.;
Teze, David;
Svensson, Birte.
(2022)
1H, 13C, 15N resonance assignment of the enzyme KdgF from Bacteroides eggerthii.
Biomolecular NMR Assignments
Academic article
Journal publications
-
Spannenkrebs, Jan Benedict;
Petersen, Agnes Beenfeldt;
Aachmann, Finn Lillelund;
Kabisch, Johannes Fritz.
(2025)
Immobilization of alginate C-5 epimerases using Bacillus subtilis spore display.
Applied and Environmental Microbiology
Academic article
-
Rønne, Mette Errebo;
Andersen, Christian Dybdahl;
Teze, David;
Petersen, Agnes Beenfeldt;
Fredslund, Folmer;
Stender, Emil G.P..
(2024)
Action and cooperation in alginate degradation by three enzymes from the human gut bacterium Bacteroides eggerthii DSM 20697.
Journal of Biological Chemistry
Academic article
-
Gravdahl, Mina;
Aarstad, Olav Andreas;
Petersen, Agnes Beenfeldt;
Karlsen, Stina Grønbeck;
Donati, Ivan;
Czjzek, Mirjam.
(2024)
A chemo-enzymatic method for preparation of saturated oligosaccharides from alginate and other uronic acid-containing polysaccharides.
Carbohydrate Polymers
Academic article
-
Petersen, Agnes Beenfeldt;
Tøndervik, Anne;
Gaardløs, Margrethe;
Ertesvåg, Helga;
Sletta, Håvard;
Aachmann, Finn Lillelund.
(2023)
Mannuronate C-5 epimerases and their use in alginate modification.
Essays in Biochemistry
Academic literature review
-
Petersen, Agnes Beenfeldt;
Mirbarati, Seyed Hossein;
Svensson, Birte;
Duus, Jens Øllgaard;
Teze, David.
(2023)
The Engineered Hexosaminidase TtOGA-D120N Is an Efficient O-/N-/S-Glycoligase That Also Catalyzes Formation and Release of Oxazoline Donors for Cascade Syntheses with Glycosynthases or Transglycosylases.
Biochemistry
Academic article
-
Petersen, Agnes Beenfeldt;
Christensen, Idd Andrea;
Rønne, Mette E.;
Stender, Emil G. P.;
Teze, David;
Svensson, Birte.
(2022)
1H, 13C, 15N resonance assignment of the enzyme KdgF from Bacteroides eggerthii.
Biomolecular NMR Assignments
Academic article
Outreach
2025
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Academic lecturePetersen, Agnes Beenfeldt; Tandrup, Tobias; Rønne, Mette Errebo; Tøndervik, Anne; Svensson, Birte; Czjzek, Mirjam. (2025) Alginate lyases – How NMR revealed a new activity. MR 2025 , Bergen 2025-05-26 - 2025-05-27
2024
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PosterPetersen, Agnes Beenfeldt; Solem, Anita; Gaardløs, Margrethe; Sætrom, Gerd Inger; Sletta, Håvard; Tøndervik, Anne. (2024) Mode of Action of AlgE1: A Modular Mannuronate C-5 Epimerase. CBM15 , Gent 2024-05-05 - 2024-05-08
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LecturePetersen, Agnes Beenfeldt; Solem, Anita; Sætrom, Gerd Inger; Sletta, Håvard; Aachmann, Finn Lillelund; Tøndervik, Anne. (2024) Mode of Action of AlgE1 - A modular mannurnate C-5 Epimerase. BioCat , Stavanger 2024-09-11 - 2024-09-13
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PosterPetersen, Agnes Beenfeldt; Solem, Anita; Gaardløs, Margrethe; Sætrom, Gerd Inger; Tøndervik, Anne; Aachmann, Finn Lillelund. (2024) Mode of Action of AlgE1: A Modular Mannuronate C-5 Epimerase. Danish NMR meeting , Roskilde 2024-01-29 - 2024-01-30
2023
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Academic lecturePetersen, Agnes Beenfeldt; Rønne, Mette Errebo; Madsen, Mikkel; Klau, Leesa Jane; Svensson, Birte; Aachmann, Finn Lillelund. (2023) Characterisation of Alginate-Modifying Enzymes. MR2023 , Trondheim 2023-05-22 - 2023-05-23
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PosterPetersen, Agnes Beenfeldt; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2023) NMR characterisation of the alginate-degrading enzyme BeKdgF. MR2023 , Trondheim 2023-05-22 - 2023-05-23
2022
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PosterPetersen, Agnes Beenfeldt; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) NMR characterisation of the alginate-degrading enzyme BeKdgF. Danish NMR Meeting 2022 , Århus 2022-06-20 - 2022-06-21
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PosterPetersen, Agnes Beenfeldt; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) NMR characterisation of the alginate-degrading enzyme BeKdgF. Carbohydrate Bioengineering Meeting 2022 , Norefjell 2022-09-25 - 2022-09-28