A stochastic simulation of skeletal muscle calcium transients in a structurally realistic sarcomere model using MCell
Fig 7
Fenestrated SR, SERCA activation at peak [Ca2+].
SERCA pumps bound with 2 Ca2+ ions are white, SERCA bound with a single Ca2+ are orange, unbound SERCA are dark orange, RYR release sites are cyan (single myosin and actin rendered for scale).