Postnatal Muscle Fiber Assembly: Localization of Newly Synthesized Myofibrillar Proteins
- 13 March 1970
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 167 (3924) , 1499-1501
- https://doi.org/10.1126/science.167.3924.1499
Abstract
Addition of newly synthesized contractile proteins to striated muscle during postnatal life was studied by labeling young rat diaphragms in vitro with 3H-leucine and extracting the soluble proteins in glycerol. The grain distribution over glycerinated fibers in electron microscopic autoradiographs indicates that new myofibrillar proteins are added about the periphery of existing fibrils.Keywords
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