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Yasumasa Joti
Researcher at University of Tokyo
Publications - 116
Citations - 5693
Yasumasa Joti is an academic researcher from University of Tokyo. The author has contributed to research in topics: SACLA & Laser. The author has an hindex of 32, co-authored 105 publications receiving 4773 citations. Previous affiliations of Yasumasa Joti include Yokohama City University & Kyoto University.
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Journal ArticleDOI
A compact X-ray free-electron laser emitting in the sub-ångström region
Tetsuya Ishikawa,Hideki Aoyagi,Takao Asaka,Yoshihiro Asano,Noriyoshi Azumi,T. Bizen,H. Ego,Kenji Fukami,Toru Fukui,Yukito Furukawa,Shunji Goto,Hirofumi Hanaki,Toru Hara,Teruaki Hasegawa,Takaki Hatsui,Atsushi Higashiya,T. Hirono,Naoyasu Hosoda,Miho Ishii,Takahiro Inagaki,Yuichi Inubushi,Toshiro Itoga,Yasumasa Joti,Masahiro Kago,Takashi Kameshima,Hiroaki Kimura,Yoichi Kirihara,Akio Kiyomichi,T. Kobayashi,Chikara Kondo,Togo Kudo,Hirokazu Maesaka,Xavier Maréchal,Takemasa Masuda,Shinichi Matsubara,Takahiro Matsumoto,Tomohiro Matsushita,Sakuo Matsui,Mitsuru Nagasono,Nobuteru Nariyama,Haruhiko Ohashi,Toru Ohata,Takashi Ohshima,Shun Ono,Yuji Otake,Choji Saji,Tatsuyuki Sakurai,Takahiro Sato,Kei Sawada,T. Seike,Katsutoshi Shirasawa,Takashi Sugimoto,Shinsuke Suzuki,Sunao Takahashi,Hideki Takebe,Kunikazu Takeshita,Kenji Tamasaku,Hitoshi Tanaka,Ryotaro Tanaka,Takashi Tanaka,Tadashi Togashi,Kazuaki Togawa,Atsushi Tokuhisa,Hiromitsu Tomizawa,Kensuke Tono,Shukui Wu,Makina Yabashi,Mitsuhiro Yamaga,Akihiro Yamashita,Kenichi Yanagida,Chao Zhang,Tsumoru Shintake,Hideo Kitamura,Noritaka Kumagai +73 more
TL;DR: In this paper, the SPring-8 Angstrom Compact Free-Electron Laser (CFEL) was used for sub-angstrom fundamental-wavelength lasing at the Tokyo National Museum.
Journal ArticleDOI
Light-induced structural changes and the site of O=O bond formation in PSII caught by XFEL.
Michihiro Suga,Fusamichi Akita,Fusamichi Akita,Michihiro Sugahara,Minoru Kubo,Yoshiki Nakajima,Takanori Nakane,Keitaro Yamashita,Yasufumi Umena,Makoto Nakabayashi,Takahiro Yamane,Takamitsu Nakano,Mamoru Suzuki,Tetsuya Masuda,Shigeyuki Inoue,Tetsunari Kimura,Takashi Nomura,Shinichiro Yonekura,Long Jiang Yu,Tomohiro Sakamoto,Taiki Motomura,Taiki Motomura,J. Chen,J. Chen,Yuki Kato,Takumi Noguchi,Kensuke Tono,Yasumasa Joti,Takashi Kameshima,Takaki Hatsui,Eriko Nango,Rie Tanaka,Hisashi Naitow,Yoshinori Matsuura,Ayumi Yamashita,Masaki Yamamoto,Osamu Nureki,Makina Yabashi,Tetsuya Ishikawa,So Iwata,Jian Ren Shen,Jian Ren Shen,Jian Ren Shen +42 more
TL;DR: The structural changes in PSII induced by two-flash illumination at room temperature at a resolution of 2.35 Å are described, providing a mechanism for the O=O bond formation consistent with that proposed previously.
Journal ArticleDOI
Dynamic Organization of Chromatin Domains Revealed by Super-Resolution Live-Cell Imaging
Tadasu Nozaki,Ryosuke Imai,Mai Tanbo,Mai Tanbo,Ryosuke Nagashima,Ryosuke Nagashima,Sachiko Tamura,Tomomi Tani,Yasumasa Joti,Masaru Tomita,Kayo Hibino,Kayo Hibino,Masato T. Kanemaki,Kerstin S. Wendt,Yasushi Okada,Takeharu Nagai,Kazuhiro Maeshima,Kazuhiro Maeshima +17 more
TL;DR: It is demonstrated that nucleosomes form compact domains with a peak diameter of ∼160 nm and move coherently in live cells and Notably, the domains during mitosis are observed, suggesting that they act as building blocks of chromosomes and may serve as information units throughout the cell cycle.
Journal ArticleDOI
A three-dimensional movie of structural changes in bacteriorhodopsin
Eriko Nango,Antoine Royant,Antoine Royant,Minoru Kubo,Takanori Nakane,Cecilia Wickstrand,Tetsunari Kimura,Tomoyuki Tanaka,Kensuke Tono,Changyong Song,Rie Tanaka,Toshi Arima,Ayumi Yamashita,Jun Kobayashi,Toshiaki Hosaka,Eiichi Mizohata,Przemyslaw Nogly,Michihiro Sugahara,Daewoong Nam,Takashi Nomura,Tatsuro Shimamura,Dohyun Im,Takaaki Fujiwara,Yasuaki Yamanaka,Byeonghyun Jeon,Tomohiro Nishizawa,Tomohiro Nishizawa,Kazumasa Oda,Masahiro Fukuda,Rebecka Andersson,Petra Båth,Robert Dods,Jan Davidsson,Shigeru Matsuoka,Satoshi Kawatake,Michio Murata,Osamu Nureki,Shigeki Owada,Takashi Kameshima,Takaki Hatsui,Yasumasa Joti,Gebhard F. X. Schertler,Gebhard F. X. Schertler,Makina Yabashi,Ana-Nicoleta Bondar,Jörg Standfuss,Richard Neutze,So Iwata +47 more
TL;DR: Time-resolved serial femtosecond crystallography at an x-ray free electron laser shows how motions are choreographed as bR transports protons uphill against a transmembrane concentration gradient.
Journal ArticleDOI
Human mitotic chromosomes consist predominantly of irregularly folded nucleosome fibres without a 30-nm chromatin structure
Yoshinori Nishino,Mikhail Eltsov,Yasumasa Joti,Kazuki Ito,Hideaki Takata,Yukio Takahashi,Saera Hihara,Saera Hihara,Achilleas S. Frangakis,Naoko Imamoto,Tetsuya Ishikawa,Kazuhiro Maeshima +11 more
TL;DR: This comprehensive and quantitative study using cryo‐electron microscopy and synchrotron X‐ray scattering resolved the long‐standing contradictions regarding the existence of 30‐nm chromatin structures and detected no regular structure >11 nm, suggesting that the mitotic chromosome consists of irregularly arranged nucleosome fibres, with a fractal nature, which permits a more dynamic and flexible genome organization.