A pre-active attached state of myosin heads in rat skeletal muscles.

@article{Yagi1998APA,
  title={A pre-active attached state of myosin heads in rat skeletal muscles.},
  author={Naoto Yagi and Keisuke Horiuti and Shigeru Takemori},
  journal={Journal of muscle research and cell motility},
  year={1998},
  volume={19 1},
  pages={75-86}
}
X-ray diffraction experiments were performed on rat soleus and psoas muscles using synchrotron radiation from a multipole wiggler. The X-ray diffraction patterns were recorded at a time resolution of 16.7 ms with an X-ray image intensifier and a CCD video camera. A bundle of 10-15 muscle fibres was activated by photorelease of 2.2 mM ATP from 7 mM caged-ATP at 15 degrees C. In soleus muscle fibres in the presence of 40 microns Ca2+, the tension developed with a half-time of 0.13 s. The… CONTINUE READING