The Structure-Function Relationship of Core Complexes in Phycobilisome(Ⅱ) ──Studies on Chromophore-Chromophore Interactions in Four Allophycocyanin Complexes

Abstract

Abstract: Four forms of allophycocyanin (APC) complexes with different structures andspectral properties in trinleric as well as monomeric aggregates were isolated from phycobili-some and characterized by both absorption and fluorescence spectra. The interactions be-tween chromophores of these APCcomplexes and their functlons in energy transfer processwere studied by deconvolutlon of absorption spectra. The results indicate that the interactionbetween chromophores of allophycocyanin complexes could be explained by Forster dipoledipole resonance Tnechanism, and it was linker polypeptides and homologous chromophoresthat influence the structural symmetry which flnally affects the interaction mechanism ofchromop hores.

Key words: Allophcocyanin complexes, Fluorescence spectra, Deconvolution of absorption spectra, Dipole-dipole interaction

CLC Number:

O641

TrendMD:

WANG Hui, ZHAO Jing-Quan, YANG Zi-Xuan, ZHANG Jian-Ping, JIANG Li-Jin. The Structure-Function Relationship of Core Complexes in Phycobilisome(Ⅱ) ──Studies on Chromophore-Chromophore Interactions in Four Allophycocyanin Complexes[J]. Chem. J. Chinese Universities, 1997, 18(9): 1517.

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The Structure-Function Relationship of Core Complexes in Phycobilisome(Ⅱ) ──Studies on Chromophore-Chromophore Interactions in Four Allophycocyanin Complexes

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