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  • 1
    Electronic Resource
    Electronic Resource
    Inactivation of photosynthetic oxygen evolution by o-phenanthroline and LiClO4 in Photosystem 2 of the pea (1993)
    Springer
    Photosynthesis research 35 (1993), S. 345-349 
    Details
    ISSN: 1573-5079
    Keywords: Key words ; Photosystem 2 ; oxygen evolution ; Mn cluster ; o-phenanthroline ; LiClO4 ; electron transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We examined the effects of o-phenanthroline and LiClO4 on oxygen evolution and electron transport in the Photosystem 2 complex of the pea. Treatment of Photosystem 2 particles with a combination of 3.0 mM o-phenanthroline and 1.0 M LiClO4 for 30–40 min at 0°C decreased the oxygen-evolving activity with the electron acceptor (either phenyl-p-benzoquinone or 2,6-dichlorophenol indophenol) to less than 5% of the original level. However with the same treatment, the electron-transport activity from an artificial electron donor, 1,5-diphenylcarbohydrazide, to 2,6-dichlorophenol indophenol remained at 60% of the original activity. The amount of manganese in the Photosystem 2 complex decreased in parallel with the loss of oxygen evolution following treatment. These observations suggest that the treatment of the Photosystem 2 complex with o-phenanthroline and LiClO4 inhibits electron transport on the oxygen-evolving side much more significantly than on the electron-acceptor side.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00016564
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of the resonance Raman spectra of 13C-and 2H-substituted carotenoids (1985)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 16 (1985), S. 27-31 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The resonance Raman spectra of 13C- and 2H-substituted carotenoids were observed from photosynthetic bacteria cultured in 13C-and 2H-substituted media, respectively. The observed Raman bands of 13C- and 2H-substituted carotenoids could be reasonably assigned on the basis of the normal coordinate analysis of a model molecule. This gave substantial support to the previous assignments of the Raman and infrared bands of β-carotene.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250160106
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