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Organization of pigments in the light harvesting chlorophyll a b protein complex from vicia faba 1. the system of spectral forms of chlorophylls in the light harvesting chlorophyll a b protein complex



Organization of pigments in the light harvesting chlorophyll a b protein complex from vicia faba 1. the system of spectral forms of chlorophylls in the light harvesting chlorophyll a b protein complex



Biochemie und Physiologie der Pflanzen (BPP) 179(1-2): 63-79



The light-harvesting chlorophyll a/b-protein complex (LHC) from V. faba was isolated according to a modification of the method described by Shutilova, et al. (1979) using Triton X-100 and followed by a removal of most of the detergent molecules. Continuing the investigations of the structure and function of chlorophyll forms in the LHC method for shaping the profile curve to fit the optical spectra is proposed. All the spectra could best be fitted with synthetic functions consisting of Gaussian and Lorentzian portions in a fixed ratio for all the spectral forms of each pigment. In conformity with French et al. (1972) only 4 components of chlorophyll a in the longwavelength region are detectable in the spectra of LHC in different states of aggregation. Applying the exciton theory, the numbers of individual pigment molecules and the molecular weight of an intact LHC monomer are estimated.

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