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Determination of the light pathlength elongation in leaves by measuring P700 quantitatively
Photosynthesis Research, 1994P700 absorption change signals were measured at 800 nm for plant leaves and plant leaf extracts by illuminating with far-red light. The ratio of the signal amplitudes for the two sample types shows the degree of optical signal intensification. The intensification is due to optical path-length elongation, itself caused by scattering. The intensification
M, Uz, O, Saygìn
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1993
PS I reaction center is a membrane-bound pigment-protein complex in the thylakoid membranes of higher plants, green algae and cyanobacteria. The photoactive components include the primary electron donor, P700, a primary electron acceptor Ao, an intermediate quinone acceptor A1 and three iron-sulphur centers Fx, FA and FB.
E. Hamacher +3 more
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PS I reaction center is a membrane-bound pigment-protein complex in the thylakoid membranes of higher plants, green algae and cyanobacteria. The photoactive components include the primary electron donor, P700, a primary electron acceptor Ao, an intermediate quinone acceptor A1 and three iron-sulphur centers Fx, FA and FB.
E. Hamacher +3 more
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P700 Spectra and Concentrations in Several Plants and a Cyanobacterium
1987The conversion of light energy into chemical free energy in plants is a function of many parameters any one of which may become paramount. for example, the rate and efficiency of energy conversion by the photosynthetic apparatus of thylakoid membranes is dominated by the energy and spectral distribution of the incident light and the size and ...
W.-J. Lee, H. B. Pakrasi, J. Whitmarsh
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FLUORESCENCE SPECTROSCOPY OF A P700‐CHLOROPHYLL‐PROTEIN COMPLEX*
Photochemistry and Photobiology, 1977Abstract. Chlorophyll‐protein complexes enriched in the Photosystem I reaction center chlorophyll (P700) exhibit a fluorescence emission maximum at 696 nm at ‐ 196°C The height of this 696 nm emission relative to the emission at 683 nm from antenna chlorophyll a increases proportionally with the P700 concentration while the total fluorescence yield of
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FTIR Studies of the Primary Electron Donor, P700
2007Summary Over the last two decades FTIR difference spectroscopy has emerged as a prominent technique to investigate the electronic structure and the bonding interactions of P700, the primary electron donor of photosystem I. In this chapter, the advances in the field during this period are reviewed and discussed in the light of the structural model of ...
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[Kinetics of dark reduction of P700 centers in photosynthesis].
Biofizika, 1976Relationship between the rate of dark fall of ESR I signal in the chloroplasts and light intensity 710 nm was studied. It is shown that the kinetics of the signal drop at sufficiently high levels of intensity is a biphase one. The fast phase (2 sec) disappears in the presence of an inhibitor of noncyclic electron transfer.
S V, Khangulov, M G, Gol'dfel'd
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Electron donors to P700 in cyanobacteria and algae
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1984K.K. Ho, D.W. Krogmann
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Characteristics of photooxidation of P700 in chloroplast fragments
Plant and Cell Physiology, 1972Ken-ichiro Takamiya, Mitsuo Nishimura
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An experiment showing that P700 can be an aggregated form of chlorophyll a
Archives of Biochemistry and Biophysics, 1965S S, Brody, M, Brody
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