Key result
Mixing separately labeled ATPases in C12E8 enables significant fluorescence energy transfer upon detergent removal.
Why the study?
The study aimed to investigate energy transfer between fluorescent dyes attached to Ca2+,Mg2+-ATPase in sarcoplasmic reticulum to understand protein interactions under detergent solubilization conditions.
Population
Sarcoplasmic reticulum isolated from rabbit skeletal muscle
Comparison
Mixing labeled ATPases in presence of C12E8 detergent vs after detergent removal
Design
Preclinical experimental study with fluorescent labeling and energy transfer analysis
Authors
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Supports ATPase monomer interactions in reconstituted systems; leaves open relevance to native cardiac membranes or in vivo function.
Fluorescence energy transfer demonstrates interaction between labeled ATPase monomers when reconstituted from a detergent-solubilized state.
Yantorno et al. (1983) studied this question. N-1-P and DACM labeling of Ca2+,Mg2+-ATPase was evaluated on Fluorescence energy transfer between N-1-P and DACM. Significant fluorescence energy transfer was observed between N-1-P and DACM when separately labeled ATPases were mixed in the presence of C12E8 and the detergent was removed.
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