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  • 1
    Electronic Resource
    Electronic Resource
    Photosynthetic Reaction Centers (1983)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology 34 (1983), S. 21-45 
    Details
    ISSN: 0066-4294
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pp.34.060183.000321
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    THE RELATION BETWEEN H+-UPTAKE AND ELECTRON FLOW IN CHROMATOPHORES FROM PHOTOSYNTHETIC BACTERIA (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 227 (1974), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1974.tb14388.x
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  • 3
    Electronic Resource
    Electronic Resource
    Derivative manipulation in the structure solution of the integral membrane LH2 complex (1999)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 55 (1999), S. 1428-1431 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The structure of the peripheral light-harvesting complex from Rhodopseudomonas acidophila strain 10050 was determined by multiple isomorphous replacement methods. The derivatization of the crystals was augmented by the addition of a backsoaking stage. The soak/backsoaked data comparison had greater isomorphism and showed simpler Patterson maps than the standard native/soak comparison. Amplitudes from the derivatized then backsoaked crystals and from the derivatized crystals were compared in order to extract a subset of heavy-atom sites. Using this information, the full array of sites were found from a derivative/native comparison, eventually leading to excellent electron-density maps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444999006514
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  • 4
    Electronic Resource
    Electronic Resource
    Crystal structure of an integral membrane light-harvesting complex from photosynthetic bacteria (1995)
    [s.l.] : Nature Publishing Group
    Nature 374 (1995), S. 517-521 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The crystal structure of the light-harvesting antenna complex (LH2) from Rhodopseudomonas acidophila strain 10050 shows that the active assembly consists of two concentric cylinders of helical protein subunits which enclose the pigment molecules. Eighteen bacteriochlorophyll a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/374517a0
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  • 5
    Electronic Resource
    Electronic Resource
    High pressure studies of energy transfer and strongly coupled bacteriochlorophyll dimers in photosynthetic protein complexes (1996)
    Springer
    Photosynthesis research 48 (1996), S. 277-289 
    Details
    ISSN: 1573-5079
    Keywords: hole burning ; homogeneous broadening ; inhomogeneous broadening ; Rhodobacter sphaeroides ; Rhodopseudomonas acidophila
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract High pressure is used with hole burning and absorption spectroscopies at low temperatures to study the pressure dependence of the B800→B850 energy transfer rate in the LH2 complex of Rhodobacter sphaeroides and to assess the extent to which pressure can be used to identify and characterize states associated with strongly coupled chlorophyll molecules. Pressure tuning of the B800–B850 gap from ∼750 cm\s-1 at 0.1 MPa to ∼900 cm-1 at 680 MPa has no measurable effect on the 2 ps energy transfer rate of the B800–850 complex at 4.2 K. An explanation for this resilience against pressure, which is supported by earlier hole burning studies, is provided. It is based on weak coupling nonadiabatic transfer theory and takes into account the inhomogeneous width of the B800–B850 energy gap, the large homogeneous width of the B850 band from exciton level structure and the Franck-Condon factors of acceptor protein phonons and intramolecular BChl a modes. The model yields reasonable agreement with the 4.2 K energy transfer rate and is consistent with its weak temperature dependence. It is assumed that it is the C9-ring exciton levels which lie within the B850 band that are the key acceptor levels, meaning that BChl a modes are essential to the energy transfer process. These ring exciton levels derive from the strongly allowed lowest energy component of the basic B850 dimer. However, the analysis of B850s linear pressure shift suggests that another Förster pathway may also be important. It is one that involves the ring exciton levels derived from the weakly allowed upper component of the B850 dimer which we estimate to be quasi-degenerate with B800. In the second part of the paper, which is concerned with strong BChl monomer-monomer interactions of dimers, we report that the pressure shifts of B875 (LH2), the primary donor absorption bands of bacterial RC (P870 of Rb. sphaeroides and P960 of Rhodopseudomonas viridis) and B1015 (LH complex of Rps. viridis) are equal and large in value (∼-0.4 cm01/MPa at 4.2 K) relative to those of isolated monomers in polymers and proteins (〈 -0.1 cm01/MPa). The shift rate for B850 at 4.2 K is-0.28 cm−1/MPa. A model is presented which appears to be capable of providing a unified explanation for the pressure shifts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041019
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    Paper (German National Licenses)
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