著者
吉川 雅英 八木 俊樹
出版者
一般社団法人 日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.48, no.6, pp.325-329, 2008 (Released:2008-12-02)
参考文献数
21

Eukaryotic cilia and flagella are highly specialized organelles that play important roles in generating motions and sensing flows. Here, we review recent progresses in cilia / flagella studies, focusing on their structural studies by cryo-electron microscopy.
著者
三宅 教尚 栗原 堅三
出版者
一般社団法人 日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.23, no.3, pp.135-145, 1983-05-25 (Released:2009-05-25)
参考文献数
58
被引用文献数
1 1

In the field of physiology, it has generally been Considered that changes in the phase boundary potential do not affect membrane potentials. The present review shows that the phase boundary potential directly contributes to the membrane potential of a number of cells. (1) The K+-channels of mouse neuroblastoma (N-18 cells) are open at high external K+-concentration but closed at low K+-concentration including the physiological one. Under physiological conditions, the resting membrane potentials of N-18 cells stem significantly from the phase boundary potentials. Theoretical consideration shows that changes in the phase boundary potentials directly affect the membrane potential when no selective channels are open. (2) Changes in the phase boundary potential also contribute to the receptor potentials in taste cells, olfactory cells and Tetrahymena as well as to the resting potentials of these cells: adsorption of chemical stimuli on the receptor membranes of these cells induces changes in the phase boundary potential, which leads to depolarization of the cells.

1 0 0 0 OA 海外だより

出版者
一般社団法人 日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.55, no.2, pp.115-116, 2015 (Released:2015-03-31)

1 0 0 0 OA 書評2

出版者
一般社団法人 日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.52, no.6, pp.312-312, 2012 (Released:2012-11-27)
著者
三室 守
出版者
一般社団法人日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.48, no.2, pp.88-96, 2008-03-25

Several essential points of photosynthetic light reactions were reviewed for future development of this scientific field and a general interest of biophysicists. Historical backgrounds of the reaction systems were also stated for the continuity of problems. Main points are reaction schemes and mechanisms of photochemical reactions in reaction center complexes, oxygen evolution, i.e. water cleavage and a high redox potential for water oxidation, and structures of reaction center complexes. These points will be solved by combination of spectroscopy and molecular biology. Photosynthesis will be utilized for our survival in the 21st century through their potentials in food supply, solar energy conversion and sustainable environmental preservation.

1 0 0 0 OA 書評

出版者
一般社団法人 日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.54, no.2, pp.124-124, 2014 (Released:2014-03-28)
著者
内山 郁夫
出版者
一般社団法人日本生物物理学会
雑誌
生物物理 (ISSN:05824052)
巻号頁・発行日
vol.42, no.6, pp.266-269, 2002-11-25

MBGD is a database system for making use of rapidly accumulating microbial genome sequences through comparative analysis. The basic function of MBGD is to create an orthologous gene classification table, which comprises sets of "equivalent" genes among multiple genomes. In MBGD, classification tables can be created on demand with specified set of organisms and parameters. This feature becomes important to understand diversity of genomes using almost a hundred genome sequences now available.