Abstract
Using fluorescence lifetime FRET-based high-throughput screening (HTS) assays, we have identified compounds that modulate the sarcoplasmic reticulum's (SR) Ca2+ gatekeeper, the ryanodine receptor (RyR) channel. Intracellular Ca2+ regulation is critical for striated muscle function, and SR Ca2+ release via opening of RyR is essential for triggering muscle contraction. Under cellular rest, increased propensity of channel opening due to RyR dysregulation is associated with severe cardiac and skeletal myopathies, and neurodegenerative diseases.
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