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. 2013 Jan 22;104(2):496–504. doi: 10.1016/j.bpj.2012.12.004

Figure 2.

Figure 2

State diagrams for the actomyosin ATPase model. A, actin; M, myosin; TRPN, troponin; fx and gx, transition rate constants. White boxes correspond to non-force-bearing states. Gray boxes correspond to force-generating states. Transition from M⋅ATP to A⋅M⋅ADP⋅Pi is cooperatively facilitated by Ca2+ binding to troponin. See text for details.