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High pressure near infrared study of the mutated light-harvesting complex LH2
Braun, P; Gebhardt, R; Kwa, L; Doster, W.
  • Braun, P; University of Munich. Department of Biology. Munich. DE
  • Gebhardt, R; Technical University Munich. Department of Physics E13. Garching. DE
  • Kwa, L; University of Munich. Department of Biology. Munich. DE
  • Doster, W; Technical University Munich. Department of Physics E13. Garching. DE
Braz. j. med. biol. res ; 38(8): 1273-1278, Aug. 2005. ilus, graf
Article in English | LILACS | ID: lil-405531
ABSTRACT
The pressure sensitivities of the near infrared spectra of the light-harvesting (LH2) complex and a mutant complex with a simplified BChl-B850 binding pocket were compared. In the mutant an abrupt change in the spectral properties occurred at 250 MPa, which was not observed with the native sample. Increased disorder due to collapse of the chromophore pocket is suggested.
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Full text: Available Index: LILACS (Americas) Main subject: Rhodobacter sphaeroides / Spectroscopy, Near-Infrared / Light-Harvesting Protein Complexes / Escherichia coli / Hydrostatic Pressure / Mutation Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2005 Type: Article / Congress and conference Affiliation country: Germany Institution/Affiliation country: Technical University Munich/DE / University of Munich/DE

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Full text: Available Index: LILACS (Americas) Main subject: Rhodobacter sphaeroides / Spectroscopy, Near-Infrared / Light-Harvesting Protein Complexes / Escherichia coli / Hydrostatic Pressure / Mutation Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2005 Type: Article / Congress and conference Affiliation country: Germany Institution/Affiliation country: Technical University Munich/DE / University of Munich/DE