Katja S. Johansen

6.4k total citations · 1 hit paper
96 papers, 4.6k citations indexed

About

Katja S. Johansen is a scholar working on Biomedical Engineering, Ecology and Plant Science. According to data from OpenAlex, Katja S. Johansen has authored 96 papers receiving a total of 4.6k indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Biomedical Engineering, 32 papers in Ecology and 28 papers in Plant Science. Recurrent topics in Katja S. Johansen's work include Biofuel production and bioconversion (36 papers), Physiological and biochemical adaptations (28 papers) and Enzyme Production and Characterization (20 papers). Katja S. Johansen is often cited by papers focused on Biofuel production and bioconversion (36 papers), Physiological and biochemical adaptations (28 papers) and Enzyme Production and Characterization (20 papers). Katja S. Johansen collaborates with scholars based in Denmark, United States and Sweden. Katja S. Johansen's co-authors include Leila Lo Leggio, Paul H. Walton, Paul Dupree, Peter G. Bushnell, J. F. Steffensen, G.J. Davies, Morten Tovborg, Kristian B. R. M. Krogh, Theodora Tryfona and Jens-Christian N. Poulsen and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Katja S. Johansen

95 papers receiving 4.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Insights into the oxidative degradation of cellulose by a copper metalloenzyme that exploits biomass components

2011 772 citations Leila Lo Leggio, Katja S. Johansen et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Katja S. Johansen Denmark	34	2.3k	1.6k	1.5k	1.2k	905	96	4.6k
Geoffrey Daniel Sweden	44	1.7k 0.7×	1.2k 0.7×	2.9k 2.0×	526 0.4×	344 0.4×	235	6.8k
David M. Cahill Australia	40	535 0.2×	1.5k 0.9×	3.5k 2.4×	239 0.2×	474 0.5×	176	5.6k
Gautam Sarath United States	53	2.0k 0.9×	3.6k 2.3×	4.3k 2.9×	402 0.3×	242 0.3×	227	8.9k
Lloyd Donaldson New Zealand	38	1.9k 0.8×	1.2k 0.8×	2.1k 1.4×	318 0.3×	103 0.1×	117	4.9k
José Muñoz‐Dorado Spain	23	827 0.4×	1.6k 1.0×	643 0.4×	447 0.4×	530 0.6×	54	3.1k
K. Ruel France	31	1.2k 0.5×	1.5k 0.9×	2.0k 1.3×	517 0.4×	99 0.1×	76	3.4k
Simon R. Turner United Kingdom	48	1.8k 0.8×	5.1k 3.2×	7.5k 5.1×	291 0.2×	89 0.1×	83	9.3k
Robert W. Sykes United States	34	2.1k 0.9×	1.6k 1.0×	1.2k 0.8×	272 0.2×	55 0.1×	77	3.6k
Manfred Auer United States	34	2.0k 0.9×	2.0k 1.3×	1.2k 0.8×	231 0.2×	405 0.4×	78	5.1k
Tony Collins Portugal	25	1.7k 0.7×	2.7k 1.7×	526 0.4×	1.8k 1.5×	877 1.0×	55	4.6k

Countries citing papers authored by Katja S. Johansen

Since Specialization

Citations

This map shows the geographic impact of Katja S. Johansen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Katja S. Johansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Katja S. Johansen more than expected).

Fields of papers citing papers by Katja S. Johansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Katja S. Johansen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Katja S. Johansen. The network helps show where Katja S. Johansen may publish in the future.

Co-authorship network of co-authors of Katja S. Johansen

This figure shows the co-authorship network connecting the top 25 collaborators of Katja S. Johansen. A scholar is included among the top collaborators of Katja S. Johansen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Katja S. Johansen. Katja S. Johansen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Brander, Søren, et al.. (2025). Anions and citrate inhibit Ls AA9A , a lytic polysaccharide monooxygenase ( LPMO ). FEBS Journal. 292(16). 4375–4389.

Ipsen, Johan Ø., Katja S. Johansen, & Søren Brander. (2023). A fast, sensitive and fluorescent LPMO activity assay. Frontiers in Microbiology. 14. 1128470–1128470. 2 indexed citations

Ipsen, Johan Ø., Jean‐Guy Berrin, Helle Juel Martens, et al.. (2023). A fungal lytic polysaccharide monooxygenase is required for cell wall integrity, thermotolerance, and virulence of the fungal human pathogen Cryptococcus neoformans. PLoS Pathogens. 19(4). e1010946–e1010946. 15 indexed citations

Tandrup, Tobias, Gianluca Santoni, Johan Ø. Ipsen, et al.. (2022). Changes in active-site geometry on X-ray photoreduction of a lytic polysaccharide monooxygenase active-site copper and saccharide binding. IUCrJ. 9(5). 666–681. 21 indexed citations

Tandrup, Tobias, Kristian E. H. Frandsen, Raushan Kumar Singh, et al.. (2022). Protonation State of an Important Histidine from High Resolution Structures of Lytic Polysaccharide Monooxygenases. Biomolecules. 12(2). 194–194. 21 indexed citations

Brander, Søren, et al.. (2021). Colorimetric LPMO assay with direct implication for cellulolytic activity. Biotechnology for Biofuels. 14(1). 51–51. 16 indexed citations

Frandsen, Kristian E. H., Johan Ø. Ipsen, Leila Lo Leggio, et al.. (2021). Inhibition of lytic polysaccharide monooxygenase by natural plant extracts. New Phytologist. 232(3). 1337–1349. 13 indexed citations

Ipsen, Johan Ø., et al.. (2021). Inhibition of LPMOs by Fermented Persimmon Juice. Biomolecules. 11(12). 1890–1890. 5 indexed citations

Evtuguin, Dmitry V., et al.. (2021). Enzymatic Fibre Modification During Production of Dissolving Wood Pulp for Regenerated Cellulosic Materials. Frontiers in Plant Science. 12. 717776–717776. 13 indexed citations

10.

García‐Santamarina, Sarela, Richard A. Festa, Chen Ding, et al.. (2020). A lytic polysaccharide monooxygenase-like protein functions in fungal copper import and meningitis. Nature Chemical Biology. 16(3). 337–344. 65 indexed citations

11.

Labourel, Aurore, Kristian E. H. Frandsen, Feng Zhang, et al.. (2020). A fungal family of lytic polysaccharide monooxygenase-like copper proteins. Nature Chemical Biology. 16(3). 345–350. 55 indexed citations

12.

Xafenias, Nikolaos, et al.. (2020). Storage and handling of pretreated lignocellulose affects the redox chemistry during subsequent enzymatic saccharification. Bioresources and Bioprocessing. 7(1). 2 indexed citations

13.

Johansen, Katja S., et al.. (2008). Hydrolysis of cellulose using mono-component enzymes shows synergy during hydrolysis of phosphoric acid swollen cellulose (PASC), but competition on Avicel. Enzyme and Microbial Technology. 42(4). 362–370. 69 indexed citations

14.

Tveita, Torkjel, et al.. (2005). Morphologic changes in tubular cells from in situ kidneys following experimental hypothermia and rewarming. Apmis. 113(1). 13–20. 14 indexed citations

15.

Eriksson, Jonny, Martin Malmsten, Fredrik Tiberg, et al.. (2004). Enzymatic degradation of model cellulose films. Journal of Colloid and Interface Science. 284(1). 99–106. 72 indexed citations

16.

Hatzack, Frank, Katja S. Johansen, & Søren K. Rasmussen. (2000). Nutritionally Relevant Parameters in Low-Phytate Barley (Hordeum vulgare L.) Grain Mutants. Journal of Agricultural and Food Chemistry. 48(12). 6074–6080. 22 indexed citations

17.

Hohtola, Esa & Katja S. Johansen. (1987). Respiratory modulation of shivering intensity in the pigeon. Acta Physiologica Scandinavica. 131(2). 215–220. 4 indexed citations

18.

Glass, Mogens L., Katja S. Johansen, & Augusto S. Abe. (1981). Pulmonary diffusing capacity in reptiles (Relations to temperature and O2-uptake). Journal of Comparative Physiology B. 142(4). 509–514. 16 indexed citations

19.

Johansen, Katja S., G. M. O. Maloiy, & Gunnar Lykkeboe. (1975). A fish in extreme alkalinity. Respiration Physiology. 24(2). 159–162. 47 indexed citations

20.

Millard, R. W. & Katja S. Johansen. (1974). Ventricular Outflow Dynamics in the Lizard, Varanus Niloticus: Responses to Hypoxia, Hypercarbia and Diving. Journal of Experimental Biology. 60(3). 871–880. 52 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact