TABLE 1.

Results from fitting Scheme II

Path	Kia	k1 (M−1 s−1)	k−1 (s−1)	K1 (μM)	k2 (s−1)	k−2 (s−1)	K3 (mM)	k5 (s−1)
Fast	0–0.42	1.1 × 106	280	260	360	330	4*	4.10
Slow	0–1000	3.9 × 104	3	77	15*	45*	4*	0.47

Rate constants were assigned (*) or fitted as described in the discussion. The only Ca²⁺-dependent parameter was K_ia. K_ia at individual [Ca²⁺] are listed in Table 2. n (see Eq. 3) was set to 7 whereas h was permitted to vary.