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Science 12 March 1965:
Vol. 147. no. 3663, pp. 1308 - 1310
DOI: 10.1126/science.147.3663.1308
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Articles

Sarcoplasmic Reticulum: Ultrastructure of the Triadic Junction

Wolf H. Fahrenbach 1

1 Oregon Regional Primate Research Center, Beaverton, Oregon

The appositional region between the intermediate element and adjacent cisternae in the triads of the sarcoplasmic reticulum of striated muscle from humans, copepods, ostracods, and barnacles shows a five-layered construction similar to that of a tight junction. Known functions of tight junctions and cisternal elements suggest that a membrane depolarization, conducted by the intermediate element, is transmitted to the cisternae by way of the triadic junction to cause a release of calcium ions from the cisternae.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Sarcoplasmic Reticulum of Striated Muscle: Localization of Potential Calcium Binding Sites.
C. W. Philpott and M. A. Goldstein (1967)
Science 155, 1019-1021
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Science. ISSN 0036-8075 (print), 1095-9203 (online)