肌原纤维中热涨落的缓慢宏观调制

Slow and macroscopic modulation of thermal fluctuations in myofibrils.

作者信息

Honda H, Nagao S, Hatori K, Matsuno K

机构信息

Department of Bioengineering, Nagaoka University of Technology, Japan.

出版信息

Biophys Chem. 1995 Mar;54(1):61-6. doi: 10.1016/0301-4622(94)00113-x.

DOI:10.1016/0301-4622(94)00113-x

PMID:7703350

Abstract

A comparison was made between fluctuations in a length of sarcomere from a myofibril during relaxed and rigor conditions. The fluctuations of the length associated with rigor states was due entirely to thermal fluctuations in the ambient. In contrast, the fluctuations associated with relaxed states were accompanied by extremely slow and macroscopically modulated thermal fluctuations. A slow, macroscopic modulation of the thermal fluctuations of the length of sarcomere was found to be unique to myofibrils in their relaxed conditions.

摘要

对肌原纤维在松弛状态和僵直状态下肌节长度的波动情况进行了比较。与僵直状态相关的长度波动完全是由周围环境的热波动引起的。相比之下，与松弛状态相关的波动伴随着极其缓慢且宏观上可调节的热波动。发现肌节长度的热波动的缓慢宏观调节是肌原纤维在松弛状态下所特有的。