Glycerinated Skeletal and Smooth Muscle: Calcium and Magnesium Dependence
- 26 March 1965
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 147 (3665) , 1581-1583
- https://doi.org/10.1126/science.147.3665.1581
Abstract
Contractions of glycerinated skeletal (striated) and vascular (smooth) muscles are similar in their calcium dependence but differ in their magnesium dependence. The threshold concentration of free Ca++ for contraction of either muscle was 1.8 x 10-7M; maximum tension developed when the concentration of free Ca++ was slightly greater than 10-6M. The Mg concentration required for contraction of smooth muscle was at least ten times as great as that for skeletal muscle.Keywords
This publication has 2 references indexed in Scilit:
- Contraction of glycerinated muscle fibers and the role of calciumBiochemical and Biophysical Research Communications, 1963
- Calcium Binding Activity of Vesicular Relaxing FactorThe Journal of Biochemistry, 1961