Tension Recovery following Ramp-Shaped Release in High-Ca and Low-Ca Rigor Muscle Fibers: Evidence for the Dynamic State of AMADP Myosin Heads in the Absence of ATP
Fig 2
Stiffness and tension changes when a skinned fiber is put into high-Ca2+ rigor state.
The fiber was first activated maximally in contracting solution, and then transferred into high-Ca rigor solution. Arrows indicate timing of solution exchanges. In this and Fig 3, upper traces show changes in in-phase stiffness and quadrature stiffness, while lower trace shows tension. The tension increment on application of rigor solution is an artefact accompanying solution exchange procedure.