
Researcher at the Laboratory for Microbial Gene Technology (LMG) with Morten Kjos as group leader.
Research
- LsbB family of leaderless bacteriocins
- The site-2 protease RseP
- Mechanisms of antibiotic resistance in S. aureus
- Bacterial stress response systems
- The saposin-like bacteriocins
Areas of Work
- Molecular Biology
- Biochemistry
- Bioinformatics
- Molecular Dynamics
- Programming
Publications
Academic profile and publications
Oftedal, T.F., Løvdal, T., Kjos, M. (2025). The phage shock protein response of Listeria monocytogenes influences tolerance to the multipeptide bacteriocin garvicin KS. bioRxiv. [PREPRINT].
Arbulu, S., Oftedal, F. F., Kjos, M. (2025). Transcriptomic response in planktonic and biofilm-associated cells of Streptococcus mutans treated with sublethal concentrations of chlorhexidine. FEMS Microbiology Letters.
Kranjec, C., Oftedal, T. F., Ovchinnikov, K. V., da Silva Duarte, V., Hermansen, S., Kaus-Drobek, M., Sabała, I., Porcellato, D., Carlsen, H., & Kjos, M. (2025). An antibiotic-free antimicrobial combination of bacteriocins and a peptidoglycan hydrolase: in vitro and in vivo assessment of its efficacy. Applied and Environmental Microbiology.
Oftedal, T.F., Diep, D. B., Kjos, M. (2024). Design of Novel Saposin-like Bacteriocins Using a Hybrid Approach. Probiotics and Antimicrobial Proteins.
Wolden R, Ovchinnikov KV, Venter HJ, Oftedal TF, Diep DB, Cavanagh JP. (2023). The novel bacteriocin romsacin from Staphylococcus haemolyticus inhibits Gram-positive WHO priority pathogens. Microbiology Spectrum 11(6): e00869-23.
Oftedal, T.F. (2023) Bacteriocins: from discovery to characterization and applications. Doctoral thesis available at: https://hdl.handle.net/11250/3098644
Oftedal, T. F. (2023). Design of Novel Saposin-like Bacteriocins with Antimicrobial Acitivity using a Hybrid Approach. Poster presentation: IBA Annual Meeting, October 9-10, Clarion Hotel Bjørvika, Oslo, Norway.
Oftedal, T. F. & Diep, D. B. (2023). Flow cytometric detection of vancomycin-resistant Enterococcus faecium in urine using fluorescently labelled enterocin K1. Sci Rep 13, 10930.
Oftedal, T.F. (2023). Detection of E. faecium using the specific interaction of a bacteriocin EntK1 with its receptor. Oral presentation at: Bacteriocin International Conference 2023, June 19-21, Lille, France.
Oftedal, T. F. (2022). Identification of a Novel Two-Peptide Lantibiotic from Vagococcus fluvialis. Poster presentation at: 7th International Symposium on Antimicrobial Peptides - AMP2022, November 7-9, Institut Pasteur, Paris, France.
Kristensen, S. S., Oftedal, T. F., Røhr, Å. K., Eijsink, V. G. H., Mathiesen, G., & Diep, D. B. (2022). The extracellular domain of site-2-metalloprotease RseP is important for sensitivity to bacteriocin EntK1. J. Biol. Chem. In Press. 102593.
Ovchinnikov, K. V., Oftedal, T. F., Reich, S. J., Bar, N. S., Holo, H., Skaugen, M., Riedel, C. U. and Diep, D. B. (2022). Genome-assisted Identification, Purification, and Characterization of Bacteriocins. Bio-protocol 12(14): e4477.
Oftedal, T.F. (2022). Genome-assisted identification, purification and characterization of a novel bacteriocin. Oral presentation at: International Scientific Conference on Probiotics, Prebiotics, Gut Microbiota and Health, June 27-30, Bratislava, Slovakia.
Rosenbergová, Z., Oftedal, T.F., Ovchinnikov, K.V., Thiyagarajah, T., Rebroš, M., Diep, D.B. (2022). Identification of a Novel Two-Peptide Lantibiotic from Vagococcus fluvialis. Microbiol Spectrum e00954-22.
Oftedal T.F. (2021). Ubericin K, a New Pore-Forming Bacteriocin Targeting mannose-PTS. Poster presented at: IBA Annual Meeting, November 1-2, Oslo, Norway.
Oftedal T.F., Ovchinnikov K.V., Hestad K.A., Goldbeck O., Porcellato D., Narvhus J., Riedel C.U., Kjos M., Diep D.B. (2021). Ubericin K, a New Pore-Forming Bacteriocin Targeting mannose-PTS. Microbiology Spectrum 0:e00299-21.
Oftedal T.F. (2019). Co-immunoprecipitation with the Multi-Peptide Bacteriocin GarKS Immunity Protein. Master's thesis submitted to: https://nmbu.brage.unit.no hdl:11250/2606410.
Teaching
Master's student main supervisor:
Master's student co-supervisor:
- Maren Angermo
- Even A. Haslund
- Anne-Line Bakke
- Maren Sofie Foss Gulliksen
- Kristine Kippersund Brokstad
- Ingvild Andrea Liaset Røren
- Aurora Tamburstuen Slåen
- Kai Arne Hestad
- Thasanth Thiyagarajah
Other supervision:
- Anaïs Rogowsky
- Zuzana Rosenbergová
Involved as a teaching assistant in Molecular Biology (BIO210) and Laboratory Exercises in Molecular Biology (BIO211).
- BIO211, 2022: laboratory course teaching assistant and lecturing
- BIO211, 2021: laboratory course teaching assistant
- BIO211, 2020: shooting, editing and performing the lab exercises for an online version of the course. Participating in teaching and organizing the course material in Canvas.
- BIO210, 2019: colloquium teaching.
Other course involvements:
- Food Microbiology (MVI220), 2020: bioinformatics lecture.
- Food Microbiology (MVI220), 2021: laboratory course teaching assistant
- Food Microbiology (MVI220), 2022: laboratory course teaching assistant
- Biochemistry (KJB200), 2018: colloquium teaching.
- Introduction to Biotechnology and Chemistry (BIO101)
Misc and CV
Courses
- Nature MasterClass in Scientific Writing and Publishing (2020)
by Andrea Du Toit, Senior Editor, Nature Reviews and Darryl David, Associate Editor, Nature
Professional memberships
- Norwegian Graduate School in Biocatalysis (BioCat)
- Norwegian Society for Microbiology (NFM)
- Norwegian Biochemical Society (NBS)