Table 1.

Comparison of the Volumes of Junctional Ca²⁺ Compartments and [CSQN]_SRrl among the Models

	SJ Model	LC Model	SM Model	HuVEC Model
Vds or Vjnc in the HuVEC model	0.002–0.005a pL/cell	0.0486–0.1215a pL/cell	0.013–0.033a pL/cell	0.303 pL/cell
1.0 × 10−7 pL for each d.s.	2.43 × 10−6 pL for each d.s.	cleft height 30 nm, (7 × 30)2 nm2 area for each d.s.	0.8% Vcell
VSRrl	0.2–0.5a pL/cell	0.08–0.21a pL/cell	0.14 pL/cell	0.46 pL/cell
1.0 × 10−5 pL for each CaRU	4.21 × 10−6 pL for each CaRU	0.35% Vcell assumed in the HuVEC model	1.2% Vcell
[CSQN]SRrl	10.0 mM	30.0 mM	30.0 mM	3 mM
VSRup	infinite	3.5% Vcell	3.5% Vcell	4.8% Vcell

In the Hinch model, 50,000 CaRUs/cell and 2 × 10⁻⁷ pL/d.s. were assumed.

^aCalculated by assuming 20,000–50,000 CaRUs/cell.