Pigment-pigment and pigment-protein interactions in recombinant water-soluble chlorophyll proteins (WSCP) from cauliflower

Article Abstract:

The spectroscopic properties of recombinant water-soluble chlorophyll-binding proteins (WSCPs) from cauliflower reconstituted with chlorophyll b (Chl b) alone or with mixtures of Chl a and Chl b are described. The results have shown that homo- and heterodimers of the pigments with strong excitonic coupling are formed, which is in line with the proposal of Chl a and Chl b homodimers.

Vegetables and melons, Other Vegetable (except Potato) and Melon Farming, Cauliflower, Spectra, Chlorophyll, Plant proteins, Two-hybrid system

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Electron-phonon coupling in solubilized LHC II complexes of green plants investigated by line-narrowing and temperature-dependent fluorescence spectroscopy

Article Abstract:

Line-narrowing and temperature-dependent fluorescence spectroscopy is used to investigate the electron-phonon coupling in solubilized light-harvesting complex of Photosystem II (LHC II). The results indicate that the low-energy Q(sub y)-states is populated according to a Boltzmann distribution representing the thermal equilibrium of excitation energy.

Chemistry, Physical and theoretical, Physical chemistry, Electrons, Fluorescence spectroscopy

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Optical dephasing in the light-harvesting complex II: a two-pulse photon echo study

Article Abstract:

The results on time integrated and time-resolved two-pulse photon echo (2PE) measurements in solubilized light-harvesting complex II (LHC II) from spinach is described. The results obtained are discussed in comparison with data in the literature that were gathered from hole burning, transient absorption measurements, and spectra simulations.

Photons, Optical properties, Absorption of light, Light absorption, Optical research

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