Satoshi Mohri    Department   Kawasaki Medical School  Kawasaki Medical School, Department of Physiology 1,    Position   Professor
Language	English
Title	Mass transfer of myosin crossbridges during contraction in rat papillary muscle.
Conference	The 81st Annual Meeting of the Physiological Society of Japan
Conference Type	Nationwide Conferences
Presentation Type	Poster notice
Lecture Type	General
Publisher and common publisher	◎Toyota Hiroko, Yagi Naoto, Okuyama Hiroshi, Araki Junichi, Shimizu Juichiro, Iribe Gentaro, Mohri Satoshi, Nakamura Kazufumi, Kakishita Mikio, Hashimoto Kathsshi, Tsujioka Katsuhiko, Fumihiko Kajiya
Date	2004/06/02
Venue (city and name of the country)	札幌
Society abstract	The Japanese Journal of Physiology 54(Suppl.),S121 2004
Summary	By x-ray diffraction study (at BL45XU in SPring 8), the equatorial reflection ratio of I(1,0) and I(1,1) was well related to the peak tension in rat papillary muscle, showing that a larger tension accompanies a smaller ratio. The correlation between the intensity ratio and the tension, is not mediated by the SL, but holds even when the tension varies depending on the specimen at the same SL. This is consistent with the interpretation that the intensity ratio in systole is related to the number of cross-bridges formed in contraction.