TABLE 1.

Properties related to channel gating

	35 μM	Steady-state [Ca2+] at the binding site when channel stays open
FR	25.0 pN	Resting tension
ΔF	1.5 pN	Channel gating threshold
δ	5 nm	Gating swing
Fcrit	24 pN	Critical tension above which open channels remain open regardless of [Ca2+]
α	0.1 μM−1 ms−1	Ca2+-binding rate to the fast adaptation modulator
k2	0.25 ms−1	Ca2+-dissociation rate from the fast adaptation modulator