Niels-Ulrik Frigaard

Niels-Ulrik Frigaard

Associate Professor

ORCID: 0000-0002-9389-8109

Publication year:
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1 - 50 out of 83Page size: 50
  1. 1993
  2. 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

  3. 1996
  4. 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

  5. 1997
  6. 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

  7. 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

  8. 1998
  9. Published

    Base treatment of chlorosomes and the regulation of energy transfer in the base-plate

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

    Research output: Contribution to journal › Journal article › Research

  10. 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

  11. 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

  12. 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

  13. 1999
  14. Published

    Association of bacteriochlorophyll a with the CsmA protein in chlorosomes of the photosynthetic green filamentous bacterium Chloroflexus aurantiacus

    Sakuragi, Y., Frigaard, Niels-Ulrik, Shimada, K. & Matsuura, K., 1999, In: BBA General Subjects. 1413, 3, p. 172-180 9 p.

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

  15. Published

    Effect of alkaline treatment on bacteriochlorophyll a, quinones, and energy transfer in chlorosomes from Chlorobium tepidum and Chlorobium phaeobacteroides

    van Walree, C. A., Sakuragi, Y., Steensgaard, D. B., Bösinger, C. S., Frigaard, Niels-Ulrik, Cox, R. P., Holzwarth, A. R. & Miller, M., 1999, In: Photochemistry and Photobiology. 69, p. 322-328 7 p.

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

  16. 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

  17. 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

  18. Published

    Pheophytinization of bacteriochlorophyll c and energy transfer in cells of Chlorobium tepidum

    Tokita, S., Hirota, M., Frigaard, Niels-Ulrik, Shimada, K. & Matsuura, K., 1999, In: Archives of Microbiology. 172, 1, p. 40-44 5 p.

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

  19. Published

    Effect of alkaline treatment on bacteriochlorophyll a, quinones and energy transfer in chlorosomes from Chlorobium tepidum and Chlorobium phaeobacteroides

    Van Walree, C. A., Sakuragi, Y., Steensgaard, D. B., Bösinger, C. S., Frigaard, Niels-Ulrik, Cox, R. P., Holzwart, A. R. & Miller, M., 1 Jan 1999, In: Photochemistry and Photobiology. 69, 3, p. 322-328 7 p.

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

  20. 2000
  21. Published

    Chlorosomes: The light-harvesting complexes of green bacteria

    Vassilieva, E. V., Frigaard, Niels-Ulrik & Bryant, D. A., 2000, In: The Spectrum. 13, p. 7-13

    Research output: Contribution to journal › Journal article › Research

  22. Published

    Electronic energy transfer involving carotenoid pigments in chlorosomes of two green bacteria: Chlorobium tepidum and Chloroflexus aurantiacus

    Melø, T. B., Frigaard, Niels-Ulrik, Matsuura, K. & Razi Naqvi, K., 2000, In: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 56, 10, p. 2001-2010 10 p.

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

  23. Published

    Pigments and proteins in green bacterial chlorosomes studied by matrix-assisted laser desorption ionization mass spectrometry

    Persson, S., Sönksen, C. P., Frigaard, Niels-Ulrik, Cox, R. P., Roepstorff, P. & Miller, M., 2000, In: European Journal of Biochemistry. 267, 2, p. 450-456 7 p.

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

  24. Published

    Quenching of bacteriochlorophyll fluorescence in chlorosomes from Chloroflexus aurantiacus by exogenous quinones

    Tokita, S., Frigaard, Niels-Ulrik, Hirota, M., Shimada, K. & Matsuura, K., 2000, In: Photochemistry and Photobiology. 72, 3, p. 345-350 5 p.

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

  25. 2001
  26. 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

  27. 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

  28. 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

  29. 2002
  30. 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

  31. Published

    Isolation and characterization of csmH, a chlorosome envelope protein, from the green sulfur bacterium Chlorobium tepidum

    Milks, K. J., Frigaard, Niels-Ulrik & Bryant, D. A., 2002, In: Abstracts of the General Meeting of the American Society for Microbiology.

    Research output: Contribution to journal › Journal article › Research

  32. 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

  33. Published

    Subcellular localization of chlorosome proteins in Chlorobium tepidum and characterization of three new chlorosome proteins: CsmF, CsmH, and CsmX

    Vassilieva, E. V., Stirewalt, V. L., Jakobs, C. U., Frigaard, Niels-Ulrik, Inoue-Sakamoto, K., Baker, M. A., Sotak, A. & Bryant, D. A., 2002, In: Biochemistry. 41, p. 4358-4370 13 p.

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

  34. 2003
  35. 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

  36. 2004
  37. 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

  38. 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

  39. 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

  40. 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

  41. Published

    The bchU gene of Chlorobium tepidum encodes the C-20 methyltransferase in bacteriochlorophyll c biosynthesis

    Maresca, J. A., Gomez Maqueo Chew, A., Ponsatí, M. R., Frigaard, Niels-Ulrik, Ormerod, J. G. & Bryant, D. A., 2004, In: Journal of Bacteriology. 186, 9, p. 2558-2566 9 p.

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

  42. 2005
  43. 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

  44. 2006
  45. 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

  46. 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

  47. 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

  48. 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

  49. Published

    Molecular contacts for chlorosome envelope proteins revealed by cross-linking studies with chlorosomes from Chlorobium tepidum

    Li, H., Frigaard, Niels-Ulrik & Bryant, D. A., 2006, In: Biochemistry. 45, 30, p. 9095-9103 8 p.

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

  50. 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

  51. 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

  52. 2007
  53. 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

  54. 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

  55. 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

  56. 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

  57. 2008
  58. 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

  59. 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

  60. 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

  61. 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

  62. 2009
  63. 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

  64. Published

    Multiple antioxidant proteins protect Chlorobaculum tepidum against oxygen and reactive oxygen species

    Li, H., Jubelirer, S., Garcia Costas, A. M., Frigaard, Niels-Ulrik & Bryant, D. A., 2009, In: Archives of Microbiology. 191, 11, p. 853-67 14 p.

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

  65. 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

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