著者
鈴木 誠 宮崎 崇
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.47, no.5, pp.295-301, 2007 (Released:2007-09-28)
参考文献数
28
被引用文献数
1

A precision microwave dielectric spectroscopic technique has been developed. This technique enables us to analyze hydration properties of ions, proteins, and other biomolecules. φ-scan method gives an image of the information of spatial distribution of dielectric property of water surrounding protein molecules. Fixed φ analysis gives a direct comparison of hydration properties of different proteins. With this technique we analyzed the state change of F-actin hydration upon binding with myosin, and found that hyper-mobile water (HMW) is induced around F-actin and increased upon binding with myosin S1. Thus, we may obtain further information of collective properties of water surrounding proteins and biomolecules.
著者
城口 克之
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.53, no.6, pp.290-294, 2013 (Released:2013-11-25)
参考文献数
25

The term “RNA sequencing (RNA-Seq)” often means the sequencing of cDNA generated from RNA as well as the direct sequencing of RNA. RNA-Seq has become well known as next generation sequencers emerge, particularly because their high throughput nature of data collection makes RNA-Seq a powerful tool for genome-wide gene expression analysis. In this review, I introduce, mainly from a technical point of view, a basic scheme of RNA sequencing, its development, and its application in several interesting studies.

1 0 0 0 OA 記憶と核酸

著者
永田 豊
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.5, no.5, pp.256-272, 1965-09-25 (Released:2009-05-25)
参考文献数
43
著者
大木 進野 江藤 真澄 松澤 史子 甲斐荘 正恒
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.45, no.2, pp.72-77, 2005 (Released:2005-03-25)
参考文献数
17

Cell motility, including smooth muscle contraction and cell migration, is regulated by reversible phosphorylation of myosin. Recent studies have shown that myosin phosphatase (MP), along with kinases, contributes dynamically to the regulation of myosin-II phosphorylation. An MP specific inhibitor named CPI-17, which is expressed in smooth muscle and neuronal cells, mediates receptor signaling leading to myosin-II phosphorylation. In this review, we discuss structure/function relationships of CPI-17 stemming from our recent NMR studies and computer modeling results. The combination of biophysical approaches with biochemical techniques has revealed the inhibitory mechanism of CPI-17.
著者
田村 厚夫
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.35, no.1, pp.40-43, 1995-01-25 (Released:2009-07-09)
参考文献数
27

It has been known that proteins can be denatured not only by increasing the temperature but also by decreasing it. The latter phenomenon, which is normally called "cold denaturation", shows common features of protein unfolding as well as characteristics that are specific to each protein.
著者
荒田 敏昭
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.4, pp.172-177, 2012 (Released:2012-07-25)
参考文献数
22

A motor protein moves on a large scale at molecular level. We have used site-directed spin-labeling electron spin resonance (ESR) to detect molecular orientation, residual side-chain mobility and inter-residual distances. Especially, the distances of 8-80 Å can be measured by continuous-wave and recently developed pulse ESR. We applied these techniques to the studies on conformational dynamics of motor proteins, myosin and kinesin, and muscular switch proteins troponin-tropomyosin. In these systems, the flexible elements undergo thermal motion and fluctuate on large scale between distinct structural states during activity.