1 0 0 0 OA 高温精密結晶構造解析によるイオン伝導性材料における可動イオン拡散経路の研究
- 著者
- 八島 正知
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.51, no.2, pp.153-161, 2009-04-30 (Released:2010-11-05)
- 参考文献数
- 72
- 被引用文献数
- 3 2
The present paper is a brief review of our recent works on the crystal structures, structural disorders and ion-diffusion paths of various ionic and mixed conductors. Diffusion paths along the <100> directions are observed in the fluorite-type ionic conductors such as δ-Bi1.4Yb0.6O3, Ce0.93Y0.07O1.96, Y0.785Ta0.215O1.715 and α-CuI. In the prerovskite-type and double-prerovskite-type conductors, the mobile oxide ions move along the <100> directions near the stable positions and along <110> around the midway of diffusion pathway. The cubic prerovskite-type and double-prerovskite-type conductors exhibit three- and two-dimensional networks of diffusion pathways, respectively. K2NiF4-type conductor has a two-dimensional network of diffusion pathway through interstitial oxide ions. The oxide ions in apatite-type conductors diffuse along the hexagonal c-axis. The diffusion paths of two lithium-ion conductors are also presented.
1 0 0 0 OA 21番目のアミノ酸, セレノシステイン合成の分子機構
- 著者
- 伊藤 弓弦 横山 茂之
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.56, no.3, pp.186-193, 2014-06-30 (Released:2014-07-09)
- 参考文献数
- 22
Selenocysteine (Sec) is the 21st amino acid that is incorporated into proteins translationally. The selenocysteine tRNA (tRNASec) is first ligated with serine by seryl-tRNA synthetase, and the Ser moiety is converted to Sec in a tRNA-dependent manner. In Bacteria, the selenocysteine synthase SelA converts Ser to Sec directly, whereas in Eukaryotes and Archaea, phosphorylation of the Ser moiety is required prior to the Sec conversion. In this review, we describe the crystal structures of SelA, bacterial tRNASec, and the SelA•tRNASec complex. Based on the crystal structures and mutational analyses, the substrate discrimination and reaction mechanisms are discussed.
1 0 0 0 OA 超高圧中性子回折装置PLANETで何ができるか?
- 著者
- 服部 高典 佐野 亜沙美 町田 真一 阿部 淳 舟越 賢一 岡崎 伸生
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.59, no.6, pp.301-308, 2017-12-31 (Released:2017-12-31)
- 参考文献数
- 14
PLANET is a powder neutron diffractometer dedicated to high-pressure experiments. By combining the intense neutron source of J-PARC and the high-pressure devices designed for time-of-flight powder neutron diffraction, precise structure analysis of crystal, liquid, and amorphous solids is possible over wide pressure and temperature range of 0~20 GPa and 77~2,000 K. This beamline is effective for various studies in geophysics, planetary science, physics and chemistry. This paper overviews the beamline and introduces recent results obtained at PLANET.
1 0 0 0 OA SHELXLのコマンドを使いこなそう!
- 著者
- 大場 茂
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.57, no.4, pp.211-218, 2015-08-31 (Released:2015-09-01)
- 参考文献数
- 10
The 3rd lesson in this tutorial course of SHELXL includes an overview of the instruction commands, a brief guide to their input formats, some Q&A concerning their applications, and a review of the treatments against disordered crystal solvents in recent papers.
1 0 0 0 OA 中性子・放射光による構造物性研究、および結晶学の発展への貢献
- 著者
- 藤井 保彦
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.53, no.Supplement, pp.s1-s2, 2011-11-24 (Released:2012-01-06)
1 0 0 0 OA 物性研究所の紹介
- 著者
- 三宅 静雄
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.3, no.1, pp.39-42, 1961-03-25 (Released:2010-09-30)
1 0 0 0 OA SPring-8におけるタンパク質結晶からの全自動データ収集システムの開発
- 著者
- 平田 邦生
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.58, no.Supplement, pp.s22-s22, 2016-11-17 (Released:2016-12-16)
1 0 0 0 OA 電界イオン顕微鏡による表面構造の研究
- 著者
- 中村 勝吾
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.11, no.4, pp.251-259, 1969-11-30 (Released:2010-09-30)
- 参考文献数
- 39
1 0 0 0 OA BaTiO3における不均一性とダイナミクス
1 0 0 0 グアノシン・ナトリウム水和物の結晶構造
- 著者
- 米倉 功治
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.52, no.1, pp.56-61, 2010-02-28 (Released:2011-02-25)
- 参考文献数
- 29
There are many huge macromolecular complexes in living organisms. They are often hard to crystallize because of their size, complexity and heterogeneity. Cryo-electron microscopy (cryo-EM) is a suitable method to analyze the structures of such biological macromolecules, because it can be applied to various forms of samples, e.g. two-dimensional crystal, helical assembly, spherical virus, dispersed particle, cell organelle and cell, although attainable resolution depends on the system. In this review, I introduce these techniques and examples of the structure analysis, and briefly review the perspective of cryo-EM.
1 0 0 0 OA 膜タンパク質の構造決定を加速化する技術の動向
- 著者
- 溝端 栄一
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.59, no.4, pp.147-148, 2017-08-31 (Released:2017-08-31)
- 参考文献数
- 10
1 0 0 0 OA 9.粉末回折法における積分強度について
- 著者
- 宇野 良清 小沢 春雄 雪野 健
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.34, no.2, pp.118-127, 1992-04-25 (Released:2010-09-30)
- 参考文献数
- 20
Fundamentals of powder diffractometry are presented, which are 1) the angle dispersive method, 2) problems in the measurements by the X-ray powder diffractometer, 3) errors from particle size and corrections for the preferred orientation, 4) energy dispersive method and 5) corrections for the anomalous dispersion.
1 0 0 0 OA 電子線ホログラフィー
1 0 0 0 OA 光電子顕微鏡
1 0 0 0 OA XFELの概要とSACLAの特徴
- 著者
- 矢橋 牧名
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.59, no.1, pp.2-5, 2017-02-28 (Released:2017-03-07)
- 参考文献数
- 27
An overview of XFEL and SACLA is presented. Typical experimental methods for XFEL sources are introduced. Following a historical review, unique features of SACLA and future perspectives are summarized.
1 0 0 0 OA 結晶カイラリティの定義に関して
- 著者
- ネスポロ マッシモ
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.59, no.1, pp.39-39, 2017-02-28 (Released:2017-03-07)
- 参考文献数
- 2
1 0 0 0 OA ステンレス鋼の加工時に生成するナノサイズの結晶相
- 著者
- 久保田 佳基 秦野 正治 菖蒲 敬久 森 茂生
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.58, no.6, pp.273-278, 2016-12-31 (Released:2017-01-06)
- 参考文献数
- 15
In-situ synchrotron diffraction experiments were conducted in order to clarify the formation process of α'-martensite from the γ-phase induced by external strain, combined with Lorentz transmission electron microscopy (TEM) and high-resolution TEM observations. Lorentz TEM observation revealed that α'-martensite exist near the defect structures such as dislocations and stacking faults in the parent γ-phase. In addition, it is clearly demonstrated that ε-martensite with hexagonal symmetry appears as an intermediate phase during the plastic deformation of SUS304 stainless steel. Our experimental results suggested that the interfaces between twin structures of the γ-phase presumably play a crucial role in the formation of ε-martensite.
1 0 0 0 OA 創薬等支援技術基盤プラットフォームで取り組む相関構造解析
- 著者
- 湯本 史明 千田 俊哉
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.57, no.1, pp.47-52, 2015-02-28 (Released:2015-03-05)
- 参考文献数
- 35
Protein crystallography has been leading the structural biology field by solving molecular structures at atomic resolution. However, it has been limited in the integration of structural information of macromolecules with a dynamic nature, which can adopt various conformations in time scales of motion even in large complexes. Therefore, it is critical to use multiple methodologies to understand biological phenomena, and connect the interfaces of molecules at both molecular and atomic resolution in macromolecular assembly. “Correlated structural analysis” is a concept in structural life science to fill the gaps between structural biology techniques. In Japan, the Platform for Drug Discovery, Informatics, and Structural Life Science has been launched with diverse expertise in bioinformatics, sample production, and structure determination. The platform supports not only conventional structural studies via X-ray crystallography, but also correlated structural analysis by integrating protein crystallography, small angle X-ray scattering, NMR, and electron microscopy data.
