X-ray diffraction of actively shortening muscle.

  title={X-ray diffraction of actively shortening muscle.},
  author={Richard J. Podolsky and H St Onge and Leepo C. Yu and R W Lymn},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={73 3},
Low angle x-ray diffraction patterns were obtained from resting and activated frog sartorius muscles by means of a position-sensitive detector. Although the intensity ratio I10/I11 decreased many-fold upon activation, it was nearly the same during isometric and isotonic contraction. Thus, motion has a much smaller effect on the low order equatorial pattern than the transition from rest to activity. Analysis of the 10 and 11 reflections separately showed that I10 and I11 change reciprocally upon… CONTINUE READING


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