Analysis of light-harvesting supramolecular complexes of green photosynthetic bacteria by regulation of structural changes

通过结构变化调控分析绿色光合细菌的光捕获超分子复合物

• 批准号: 20750143
• 负责人: SAGA Yoshitaka
• 金额: $ 2.83万
• 依托单位: Kinki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20750143/
• 关键词: 生体機能関連化学; 光合成; 緑色光合成細菌; クロロゾーム; バクテリオクロロフィル; 自己会合体

Spectral properties and functions of major light-harvesting complexes, chlorosomes, of green photosynthetic bacteria were characterized by induction of changes of their components and supramolecular structures. Isomer composition changes of light-harvesting bacteriochlorophylls in cells of green sulfur photosynthetic bacteria were successfully performed by changes of cultivating conditions. Spectroscopic properties of chlorosomes that were isolated from these bacteria were analyzed. Spectral changes of pigment supramolecules mimicking chlorosomes by external stimuli were also examined. In addition, structure-dependent demetalation properties of light-harvesting bacteriochlorophylls of chlorosomes were unraveled under weakly acidic conditions.

通过诱导绿光细菌主要捕光复合体的组成和超分子结构的变化来表征其光谱性质和功能。通过改变培养条件，成功地改变了绿色硫光合细菌细胞中捕光细菌叶绿素的异构体组成。对从这些细菌中分离得到的绿体进行了光谱分析。还研究了模拟绿小体的色素超分子在外界刺激下的光谱变化。此外，还揭示了弱酸性条件下捕光细菌叶绿体的结构依赖性脱金属化特性。

项目成果

Physicochemical Studies of Demetalation of Light-Harvesting Bacteriochlorophyll Isomers Purified from Green Sulfur Photosynthetic Bacteria

绿硫光合细菌纯化的光捕获细菌叶绿素异构体脱金属的物理化学研究

• 发表时间: 2009
• 期刊: Photochem. Photobiol. (印刷中)
• 作者: 尾高雅文;堀祥太;荒川孝俊;中山 洋;堂前 直;三野広幸;片山葉子;養王田正文;Y. Hirai
• 通讯作者: Y. Hirai

Chlorosomal Self-Aggregation of Zinc Chlorophyll Derivatives in the Presence of Cationic Surfactant Cetyltrimethylammonium Bromide and Organosilanes in Aqueous Phase, Photosynthesis.

水相中阳离子表面活性剂十六烷基三甲基溴化铵和有机硅烷存在下叶绿素锌衍生物的染色体自聚集、光合作用。

• 发表时间: 2008
• 期刊: Energy from the Sun
• 作者: Y.Saga;H.Kida;Y.Nishikawa;H.Tamiaki
• 通讯作者: H.Tamiaki

クロロフィル分子の長鎖アルキル鎖の改変による色素自己集積型光合成超分子の機能化

通过叶绿素分子长烷基链的修饰实现色素自组装光合超分子的功能化

• 发表时间: 2009
• 作者: K. Ono;H. Totani;T. Hiei;A. Yoshino K. Saito;K. Eguchi;M. Tomura;J. Nishida;Y. Yamashita;佐賀佳央
• 通讯作者: 佐賀佳央

Characterization of Chlorosomal Self-Assembly of Zinc Chlorophyll Derivatives Esterified by Different Linear Alcohols in Aqueous Solutions

不同直链醇酯化叶绿素锌衍生物在水溶液中的染色体自组装表征

• 发表时间: 2009
• 作者: Y.Saga;H.Tamiaki
• 通讯作者: H.Tamiaki

Demetalation Kinetics of Natural Chlorophylls Purified from Oxygenic Photosynthetic Organisms: Effect of the Formyl Groups Conjugated Directly to the Chlorin p-Macrocycle

从产氧光合生物中纯化的天然叶绿素的脱金属动力学：直接与二氢卟酚大环共轭的甲酰基的影响

• 发表时间: 2009
• 期刊: Photochemical & Photobiological Sciences 8
• 作者: Y.Hirai;H.Tamiaki;S.Kashimura;Y.Saga
• 通讯作者: Y.Saga