Volume 09, No.2
March issue 2004
（財）高輝度光科学研究センター 副理事長、放射光研究所長 Director General of Synchrotron Radiation Research Laboratory, Vice President of JASRI
1. SPring-8の現状／PRESENT STATUS OF SPring-8
東京工業大学 応用セラミックス研究所 Materials and Structures Laboratory, Tokyo Institute of Technology
2. ビームライン／BEAMLINES
[1]（独）理化学研究所 播磨研究所、理学電機株式会社 Ｘ線研究所 Harima Institute, RIKEN / X-ray Research Laboratory, Rigaku Corporation、[2]（独）理化学研究所 播磨研究所 Harima Institute, RIKEN
（財）高輝度光科学研究センター、大阪大学名誉教授 JASRI / Professor Emeritus, Osaka University
3. 最近の研究から／FROM LATEST RESEARCH
大阪大学 蛋白質研究所 Institute for Protein Research, Osaka University
- Abstract
- The photosynthetic unit of oxygenic photosynthesis is organized as two large multimolecular membrane complexes, photosystem II (PSII) and photosystem I (PSI). The two photosystems operate in series linked by a third multiprotein complex called the cytochrome b6f complex. The cytochrome b6f complex is a membrane-spanning protein complex embedded in a thylakoide membrane of photosynthetic organisms. The b6f complex arranges the electron transfer between plastoquinol reduced by PSII and an electron carrier protein plastocyanin that connects to PSI. The structure of the b6f complex from cyanobacterium M. laminosus was solved at 3.0 Å resolution by isomorphous replacement method and multiwavelength anomalous diffraction from native iron atoms. The crystal structures of the cytochrome b6f complex complete the description of the architecture of the oxygenic photosynthetic electron transport chain, since three-dimensional structures have been provided for two photosystems.
前兵庫県警察本部 科学捜査研究所長 Former Director, Forensic Science Laboratory, Hyogo Prefectural Police Headquarters
4. 研究会等報告／WORKSHOP AND COMMITTEE REPORT
日本原子力研究所 関西研究所 放射光科学研究センター Synchrotron Radiation Research Center, Kansai Research Establishment, JAERI
[1]高エネルギー加速器研究機構 物質構造科学研究所 Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)、[2]（財）高輝度光科学研究センター 利用研究促進部門Ⅰ Materials Science Division, JASRI
（財）高輝度光科学研究センター 利用研究促進部門Ⅱ Life and Environmental Science Division, JASRI
