| Literature DB >> 6608964 |
W Melzer, E Rios, M F Schneider.
Abstract
The transient increase in free myoplasmic calcium concentration due to depolarization of a skeletal muscle fiber is the net result of the release of calcium from the sarcoplasmic reticulum (SR) and its simultaneous removal by binding to various sites and by reuptake into the SR. We present a procedure for empirically characterizing the calcium removal processes in voltage-clamped fibers and for using such characterization to determine the time course of SR calcium release during a depolarizing pulse. Our results reveal a decline of the SR calcium release rate during depolarization that was not anticipated from simple inspection of the calcium transients.Entities:
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Year: 1984 PMID: 6608964 PMCID: PMC1434889 DOI: 10.1016/S0006-3495(84)84203-4
Source DB: PubMed Journal: Biophys J ISSN: 0006-3495 Impact factor: 4.033