Intensification of the first actin layer-line during contraction of frog skeletal muscle.
The peak position of the first myosin layer-line in frog skeletal muscle shifts towards the higher angle during contraction. An analysis showed that the observed axial intensity profile of the first myosin layer-line is fitted well by summation of two layer-lines at 1/43.0 and 1/36.0 nm-1. The former corresponds to the first myosin layer-line, and the latter to the first actin layer-line whose intensity the analysis shows to increase in 0.03-0.08 nm-1 but to decrease in 0.08-0.14 nm-1 during contraction.
Yagi
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Department of Pharmacology, Tohoku University School of Medicine, Sendai, Japan.
D000199:Actins / Q000502:physiology*; D000818:Animals; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology*; D009218:Myosins / Q000502:physiology*; D011898:Ranidae
D000199:Actins; D009218:Myosins