Dissociation Kinetics of Anabaena Phycobilisomes

スポンサーリンク

概要

• 論文の詳細を見る

• The dissociation kinetics of Anabaena phycobilisomes (PBS) at low phosphate concentrations was studied with light scattering and sensitized fluorescence arising from allophycocyanin-I (APC-I). When curve fitting was applied to the decrement time-courses of these two characters, both fitted the same type of decay kinetics consisting of three sequential phases of first-order decay, and the rate constants of these phases were practically the same between changes of light scattering and sensitized fluorescence. As the light scattering reflects the particle size, the conformity of the two kinetics indicates that the uncoupling of excitation energy transfer originated from the dissociation of PBS. The fluorescence emission spectra of dissociating PBS were resolvable into three-component spectra, those of phycocyanin (PC) hexamer, APC trimer and APC-I. In the first and second phases of dissociation, the emission from PC increased with con-comitant decrease in the emission from APC and APC-I with the ratio of APC to APC-I unaltered, while in the third phase the transfer from APC to APC-I was completely disrupted. These results support the view that the whole PBS consists of two moieties of PC subparticle and one moiety of APC-APC-I complex.

• 日本植物生理学会の論文

著者

• Katoh Tetzuya

  Department Of Bioscience Tokyo University Of Agriculture

• Kume Nahoaki

  Department Of Botany Faculty Of Science Kyoto University

• KATOH TETZUYA

  Department of Biophysics and Biochemistry, Faculty of Science, University of Tokyo:(Present)Botanical Institute, Kyoto University

関連論文

• Distribution of Prx-linked Hydroperoxide Reductase Activity among Microorganisms
• Fucoxanthin-Pyropheophorbide and Zeaxanthin-Pyropheophorbide Dyads as New Models for Study on Carotenoid-Chlorophyll Excited State Interactions
• Separation of Cl-Containing Chlorophylls by Column Chromatography
• Subparticles of Anabaena Phycobilisomes I. : Reconstitution of Allophycocyanin Cores and Entire Phycobilisomes
• Photosystem I-dependent oxidation of organic acids in blue-green alga, Anabaena variabilis
• Supramolecular Assembly of Fucoxanthin-Chlorophyll-Protein Complexes Isolated from a Brown Alga, Petalonia fascia. Electron Microscopic Studies
• Regeneration of photosystem II and phycobilin pigments in photoorganotrophically grown Anabaena variabilis
• Photoorganotrophic growth of a blue-green alga, Anabaena variabilis
• Dissociation Kinetics of Anabaena Phycobilisomes
• Intracellular ATP level and light-induced inhibition of respiration in a blue-green alga, Anabaena variabilis
• Cylindrical Phycobilisomes from a Blue-Green Alga, Anabaena variabilis
• NITRATE REDUCTASE IN PHOTOSYNTHETIC BACTERIUM, RHODOSPIRILLUM RUBRUM. ADAPTIVE FORMATION OF NITRATE REDUCTASE
• Loss of photosystem II induced by a nitrate deficiency in photoorganotrophically grown Anabaena variabilis
• NITRATE REDUCTASE IN PHOTOSYNTHETIC BACTERIUM, RHODOSPIRILLUM RUBRUM. PURIFICATION AND PROPERTIES OF NITRATE REDUCTASE IN NITRATE-ADAPTED CELLS

もっと見る 閉じる

スポンサーリンク