Niels-Ulrik Frigaard

Niels-Ulrik Frigaard

Associate Professor

ORCID: 0000-0002-9389-8109

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  1. Published

    Chlorosome protein structure and function and the complete genome sequence of Chlorobium tepidum

    Bryant, D. A., Frigaard, Niels-Ulrik, Vassilieva, E. V. & Eisen, J. A., 2001, In: Photosynthesis Research.

    Research output: Contribution to journal › Journal article › Research

  2. Published

    Selective Protein Extraction from Chlorobium tepidum Chlorosomes Using Detergents. Evidence That CsmA Forms Multimers and Binds Bacteriochlorophyll a

    Bryant, D. A., Vassilieva, E. V., Frigaard, Niels-Ulrik & Li, H., 2002, In: Biochemistry. 41, 48, p. 14403-14411 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Prokaryotic photosynthesis and phototrophy illuminated

    Bryant, D. A. & Frigaard, Niels-Ulrik, 2006, In: Trends in Microbiology. 14, 11, p. 488-496 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Comparative and functional genomics of anoxygenic green bacteria from the taxa Chlorobi, Chloroflexi, and Acidobacteria

    Bryant, D. A., Liu, Z., Li, T., Zhao, F., Klatt, C. G., Ward, D. M., Frigaard, Niels-Ulrik & Overmann, J., 2012, Functional genomics and evolution of photosynthetic systems. Burnap, R. L. & Vermaas, W. F. J. (eds.). Springer, p. 47-102 56 p. (Advances in Photosynthesis and Respiration, Vol. 33).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  5. Published

    Light-driven oxidation of polysaccharides by photosynthetic pigments and a metalloenzyme

    Cannella, D., Möllers, K. B., Frigaard, Niels-Ulrik, Jensen, Poul Erik, Bjerrum, Morten Jannik, Johansen, Katja Salomon & Felby, C., 2016, In: Nature Communications. 7, 11134.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Bacteriochlorophyllide c C-8(2) and C-12(1) Methyltransferases are essential for adaptation to low light in Chlorobaculum tepidum

    Chew, A. G. M., Frigaard, Niels-Ulrik & Bryant, D. A., 2007, In: Journal of Bacteriology.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Community genomics among stratified microbial assemblages in the ocean's interior

    DeLong, E. F., Preston, C. M., Mincer, T., Rich, V., Hallam, S. J., Frigaard, Niels-Ulrik, Martinez, A., Sullivan, M. B., Edwards, R., Brito, B. R., Chisholm, S. W. & Karl, D. M., 2006, In: Science. 311, 5760, p. 496-503 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Membrane inlet manometry for the measurement of water activity in aqueous and organic solutions

    Degn, H. & Frigaard, Niels-Ulrik, 1993, In: Analytica Chimica Acta. 274, p. 355-359 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Quantitative proteomics of Chlorobaculum tepidum: insights into the sulfur metabolism of a phototrophic green sulfur bacterium

    Falkenby, L. G., Szymanska, M., Holkenbrink, C., Habicht, K. S., Andersen, J. S., Miller, M. & Frigaard, Niels-Ulrik, 2011, In: F E M S Microbiology Reviews. 323, 2, p. 142-150 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Exogenous quinones inhibit photosynthetic electron transfer in Chloroflexus aurantiacus by specific quenching of the excited bacteriochlorophyll c antenna

    Frigaard, Niels-Ulrik, Tokita, S. & Matsuura, K., 1999, In: BBA General Subjects. 1413, 3, p. 108-116 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Oxygen uncouples light absorption by the chlorosome antenna and photosynthetic electron transfer in the green sulfur bacterium Chlorobium tepidum

    Frigaard, Niels-Ulrik & Matsuura, K., 1999, In: BBA General Subjects. 1412, 2, p. 108-117 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Chromosomal gene inactivation in the green sulfur bacterium Chlorobium tepidum by natural transformation

    Frigaard, Niels-Ulrik & Bryant, D. A., 2001, In: Applied and Environmental Microbiology. 67, 6, p. 2538-2544 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Bacteriochlorophyll biosynthesis in green bacteria

    Frigaard, Niels-Ulrik, Chew, A. G. M., Maresca, J. A. & Bryant, D. A., 2006, Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications. Grimm, B., Porra, R. J., Rüdiger, W. & Scheer, H. (eds.). Berlin: Springer, Vol. 25. p. 201-221

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  14. Published

    Mikroorganismer på gen-indkøb

    Frigaard, Niels-Ulrik, 2006, In: Aktuel Naturvidenskab. 4, p. 15 1 p.

    Research output: Contribution to journal › Journal article › Research

  15. Published

    Chlorosomes: antenna organelles in photosynthetic green bacteria

    Frigaard, Niels-Ulrik & Bryant, D. A., 2006, Complex Intracellular Structures in Prokaryotes. Shively, J. M. (ed.). Berlin: Springer, Vol. 2. p. 79-114 (Microbiology Monographs, Vol. 2).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  16. Published

    Genomic and Evolutionary Perspectives on Sulfur Metabolism in Green Sulfur Bacteria

    Frigaard, Niels-Ulrik & Bryant, D. A., 2008, Microbial Sulfur Metabolism. Springer, p. 60-76 16 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  17. Published

    Nine mutants of Chlorobium tepidum each unable to synthesize a different chlorosome protein still assemble functional chlorosomes

    Frigaard, Niels-Ulrik, Li, H., Milks, K. J. & Bryant, D. A., 2004, In: Journal of Bacteriology. 186, 3, p. 646-653 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Genomic Insights into the Sulfur Metabolism of Phototrophic Green Sulfur Bacteria

    Frigaard, Niels-Ulrik & Bryant, D. A., 2008, In: Advances in Photosynthesis and Respiration. 27, p. 337-355 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Sugar and Sugar Alcohol Production in Genetically Modified Cyanobacteria

    Frigaard, Niels-Ulrik, 2018, Genetically Engineered Foods. Holban, A. M. & Grumezescu, A. M. (eds.). Academic Press, p. 31-47 17 p. (Handbook of Food Bioengineering, Vol. 6).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  20. Published

    The remarkable chlorosome

    Frigaard, Niels-Ulrik, Vassilieva, E. V., Li, H., Milks, K. J., Zhao, J. & Bryant, D. A., 2001, Proceedings of the 12th International Congress on Photosynthesis. CSIRO Publishing, p. S1-003 6 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  21. Published

    Genetic manipulation of carotenoid biosynthesis in the green sulfur bacterium Chlorobium tepidum

    Frigaard, Niels-Ulrik, Maresca, J. A., Yunker, C. E., Jones, A. D. & Bryant, D. A., 2004, In: Journal of Bacteriology. 186, 16, p. 5210-5220 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Sulfur metabolism in phototrophic sulfur bacteria

    Frigaard, Niels-Ulrik & Dahl, C., 2008, In: Advances in Microbial Physiology. 54, p. 103-200 97 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Studies of the location and function of isoprenoid quinones in chlorosomes from green sulfur bacteria

    Frigaard, Niels-Ulrik, Matsuura, K., Hirota, M., Miller, M. & Cox, R. P., 1998, In: Photosynthesis Research. 58, p. 81-90 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Chlorobium tepidum mutant lacking bacteriochlorophyll c made by inactivation of the bchK gene, encoding bacteriochlorophyll c synthase

    Frigaard, Niels-Ulrik, Voigt, G. D. & Bryant, D. A., 2002, In: Journal of Bacteriology. 184, 12, p. 3368-3376 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Gene Inactivation in the Cyanobacterium Synechococcus sp. PCC 7002 and the Green Sulfur Bacterium Chlorobium tepidum Using In Vitro-Made DNA Constructs and Natural Transformation

    Frigaard, Niels-Ulrik, Sakuragi, Y. & Bryant, D. A., 2004, In: Methods in Molecular Biology. 274, p. 325-340 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Biotechnology of anoxygenic phototrophic bacteria

    Frigaard, Niels-Ulrik, 2016, Anaerobes in biotechnology. Hatti-Kaul, R., Mamo, G. & Mattiasson, B. (eds.). Springer, p. 139-154 16 p. (Advances in Biochemical Engineering. Biotechnology, Vol. 156).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  27. Published

    Spectrochromatography of photosynthetic pigments as a fingerprinting technique for microbial phototrophs

    Frigaard, Niels-Ulrik, Larsen, K. L. & Cox, R. P., 1996, In: FEMS Microbiology Ecology. 20, p. 69-77 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Quinones in chlorosomes of green sulfur bacteria and their role in the redox-dependent fluorescence studied in chlorosome like bacteriochlorophyll c aggregates

    Frigaard, Niels-Ulrik, Takaichi, S., Hirota, M., Shimada, K. & Matsuura, K., 1997, In: Archives of Microbiology. 167, p. 343-349 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Isolation and Characterization of Carotenosomes from a Bacteriochlorophyll c-less Mutant of Chlorobium tepidum

    Frigaard, Niels-Ulrik, Li, H., Martinsson, P., Das, S. K., Frank, H. A., Aartsma, T. J. & Bryant, D. A., 2005, In: Photosynthesis Research. 86, 1-2, p. 101-11 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Alle bakterier deler gener ved horisontal overførsel

    Frigaard, Niels-Ulrik, 2007, In: Dansk Kemi. 88, 5, p. 28-31 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Seeing green bacteria in a new light: genomics-enabled studies of the photosynthetic apparatus in green sulfur bacteria and filamentous anoxygenic phototrophic bacteria

    Frigaard, Niels-Ulrik & Bryant, D. A., 2004, In: Archives of Microbiology. 182, 4, p. 265-276 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Chlorobium Tepidum: Insights into the Structure, Physiology, and Metabolism of a Green Sulfur Bacterium Derived from the Complete Genome Sequence

    Frigaard, Niels-Ulrik, Chew, A. G. M., Li, H., Maresca, J. A. & Bryant, D. A., 2003, In: Photosynthesis Research. 78, 2, p. 93-117 24 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Proteorhodopsin lateral gene transfer between marine planktonic Bacteria and Archaea

    Frigaard, Niels-Ulrik, Martinez, A., Mincer, T. J. & DeLong, E. F., 2006, In: Nature. 439, 7078, p. 847-850 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Quinones in chlorosomes of green sulfur bacteria and their role in the redox-dependent fluorescence studied in chlorosome-like bacteriochlorophyll c aggregates

    Frigaard, Niels-Ulrik, Takaichi, S., Hirota, M., Shimada, K. & Matsuura, K., 1 Jan 1997, In: Archives of Microbiology. 167, 6, p. 343-349 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Location and function of isoprenoid quinones in chlorosomes from green sulfur bacteria

    Frigaard, Niels-Ulrik, Matsuura, K., Hirota, M., Miller, M. & Cox, R. P., 1998, In: Plant and Cell Physiology.

    Research output: Contribution to journal › Journal article › Research

  36. Published

    Bacteriochlorophyllide c C-82 and C-121 methyltransferases are essential for adaptation to low light in Chlorobaculum tepidum

    Gomez Maqueo Chew, A., Frigaard, Niels-Ulrik & Bryant, D. A., 2007, In: Journal of Bacteriology. 189, 17, p. 6176-6184 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Mutational analysis of three bchH paralogs in (bacterio-)chlorophyll biosynthesis in Chlorobaculum tepidum

    Gomez Maqueo Chew, A., Frigaard, Niels-Ulrik & Bryant, D. A., 2009, In: Photosynthesis Research. 101, 1, p. 21-34 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Identification of the bchP gene, encoding geranylgeranyl reductase in Chlorobaculum tepidum

    Gomez Maqueo Chew, A., Frigaard, Niels-Ulrik & Bryant, D. A., 2008, In: Journal of Bacteriology. 190, 2, p. 747-749 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Dominance of a clonal green sulfur bacterial population in a stratified lake

    Gregersen, Lea Haarup, Habicht, K. S., Peduzzi, S., Tonolla, M., Canfield, D. E., Miller, M., Cox, R. P. & Frigaard, Niels-Ulrik, 2009, In: FEMS Microbiology Ecology. 70, 1, p. 30-41 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Mechanisms and evolution of oxidative sulfur metabolism in green sulfur bacteria

    Gregersen, Lea Haarup, Bryant, D. A. & Frigaard, Niels-Ulrik, 2011, In: Frontiers in Microbiology. 2, 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Proteomic study of Chlorobium clathratiforme in Lago di Cadagno, Switzerland

    Habicht, K. S., Miller, M., Nielsen, L. F., Frigaard, Niels-Ulrik & Andersen, J. S., 2009, In: Geochimica et Cosmochimica Acta. p. A484

    Research output: Contribution to journal › Journal article › Research

  42. Published

    The effect of high concentrations of green sulfur bacteria on the biogeochemical carbon cycle of Lago di Cadagno

    Habicht, K. S., Frigaard, Niels-Ulrik, Johnson, B., Andersen, J. S., Falkenby, L. & Miller, M., 2010, In: Geochimica et Cosmochimica Acta. p. A369

    Research output: Contribution to journal › Journal article › Research

  43. Published

    Comparative proteomics and activity of a green sulfur bacterium across the water column of Lake Cadagno, Switzerland

    Habicht, K. S., Miller, M., Cox, R. P., Frigaard, Niels-Ulrik, Tonolla, M., Peduzzi, S., Falkenby, L. G. & Andersen, J. S., 2011, In: Environmental Microbiology. 13, 1, p. 203-215 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Rerouting of carbon flux in a glycogen mutant of cyanobacteria assessed via isotopically non-stationary 13C metabolic flux analysis

    Hendry, J. I., Prasannan, C., Ma, F., Möllers, B., Jaiswal, D., Digmurti, M., Allen, D. K., Frigaard, Niels-Ulrik, Dasgupta, S. & Wangikar, P. P., Oct 2017, In: Biotechnology and Bioengineering. 114, 10, p. 2298-2308 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Sulfur globule oxidation in green sulfur bacteria is dependent on the dissimilatory sulfite reductase system

    Holkenbrink, C., Ocón Barbas, S., Mellerup, A., Otaki, H. & Frigaard, Niels-Ulrik, 2011, In: Microbiology. 157, 4, p. 1229-1239 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    X-ray scattering and electron cryomicroscopy study on the effect of carotenoid biosynthesis to the structure of Chlorobium tepidum chlorosomes

    Ikonen, T. P., Li, H., Psencík, J., Laurinmäki, P. A., Butcher, S. J., Frigaard, Niels-Ulrik, Serimaa, R. E., Bryant, D. A. & Tuma, R., 2007, In: Biophysical Journal. 93, 2, p. 620-628 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Engineering of photosynthetic mannitol biosynthesis from CO2 in a cyanobacterium

    Jacobsen, J. H. & Frigaard, Niels-Ulrik, 2014, In: Metabolic Engineering. 21, p. 60-70 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    One-step plasmid construction for generation of knock-out mutants in cyanobacteria: studies of glycogen metabolism in Synechococcus sp. PCC 7002

    Jacobsen, J. H., Rosgaard, L., Sakuragi, Y. & Frigaard, Niels-Ulrik, 2011, In: Photosynthesis Research. 107, 2, p. 215-221 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. [2Fe-2S] Proteins in chlorosomes: redox properties of CsmI, CsmJ, and CsmX of the chlorosome envelope of Chlorobaculum tepidum

    Johnson, T. W., Li, H., Frigaard, Niels-Ulrik, Golbeck, J. H. & Bryant, D. A., 2013, In: Biochemistry. 52, 8, p. 1331-1343 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Menaquinone-7 in the reaction center complex of the green sulfur bacterium Chlorobium vibrioforme functions as the electron acceptor A1

    Kjaer, B., Frigaard, Niels-Ulrik, Yang, F., Zybailov, B., Miller, M., Golbeck, J. H. & Scheller, H. V., 1998, In: Biochemistry. 37, 10, p. 3237-3242 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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