Volume 07, No.2
目次 / Table of Contents
March issue 2002
（財）高輝度光科学研究センター 副理事長、放射光研究所長 JASRI Vice President, Director of JASRI Research Sector
1. SPring-8の現状／PRESENT STATUS OF SPring-8
2. 最近の研究から／FROM LATEST RESEARCH
（財）高輝度光科学研究センター、大阪大学 蛋白質研究所、JST戦略基礎（佐々木チーム）研究代表 JASRI, Osaka University/IPR, JST/CREST
- Abstract
- We propose a new X-ray methodology for direct observations of the behaviors of single molecular units in real time and real space. This new system, which we call Diffracted X-ray Tracking (DXT), monitors the Brownian motions of a single molecular unit by observations of X-ray diffracted spots from a nanocrystal, tightly bound to the individual single molecular unit in bio-systems. DXT does not determine any translational movements, but only orientational movements. Recently, time-resolved dynamical X-ray imaging of individual DNA molecules with picometer-scale precision is demonstrated using DXT for the first time. DXT can obtain information about the dynamics of single molecules through a quantitative analysis, since the signals from DXT are independent of the chemical conditions.
3. 研究会等報告／WORKSHOP AND COMMITTEE REPORT
岡山大学 理学部 物理学科 Department of Physics, Faculty of Science, Okayama University
大阪大学大学院 基礎工学研究科 Graduate School of Engineering Science, Osaka University
（財）高輝度光科学研究センター 放射光研究所 利用研究促進部門Ⅰ JASRI Materials Science Division
筑波大学 物質工学系 Institute of Materials Science, University of Tsukuba
大阪大学 蛋白質研究所 物理構造部門 Structure Organization of Biological Macromolecular Assemblies, Institute for Protein Research, Osaka University
[1]（財）高輝度光科学研究センター 放射光研究所 加速器部門 JASRI Accelerator Division、[2]（財）高輝度光科学研究センター 放射光研究所 ビームライン・技術部門 JASRI Beamline Division
