Table 1.

Structural parameters of PSM and SSM obtained from joint analysis of SAXS and SANS data, and those from MD simulation with a constrained area per lipid of 61.9 Ų. Parameter symbols are defined in Materials and Methods. Uncertainty of free parameters is estimated to be 2%.⁹

Parameter	SSM		PSM
	Experiment		Experiment		Simulation
T [°C]	55	65	45	55	55
Vwat [Å3]**	30.2	30.3	30.2	30.3	30.5
VL [Å3]**	1226.8	1237.1	1151.6	1161.7	1172.4
VHL [Å3]**	274	274	274	274	275.1
rBB*	0.34	0.33	0.36	0.37	0.37
rPCN*	0.33	0.33	0.4	0.4	0.35
rCH3*	2.14	2.06	1.99	2	2.12
rCH*	1.12	1.09	1.14	1.13	1.03
DB [Å]	39.3	38.1	38.4	37.5	37.9
DHH [Å]	40	39.4	38.9	37.8	38
2DC [Å]	30.5	29.7	29.3	28.7	29
DH1 [Å]	4.77	4.85	4.8	4.55	4.5
AL [Å2]	62.5	64.9	60.0	61.9	61.9
zBB [Å]	14.7	14.2	14.6	14.1	15.8
σBB [Å]	2.1	2.03	2.55	2.36	2.44
zPCN [Å]	20.1	19.7	19.5	18.9	19.2
σPCN [Å]	2.5	2.48	2.24	1.89	2.52
zCholCH3 [Å]	23.7	23.1	21.7	22	20.5
σCholCH3 [Å]**	2.95	2.95	2.95	2.95	2.94
zCH [Å]	15.8	15.3	14.8	14.9	14
σCH [Å]**	2.54	2.54	2.54	2.54	2.48
σHC [Å]*	2.79	2.76	2.81	2.8	2.51
σCH3 [Å]	3.05	3.38	2.83	3.159	3.19

^**constrained parameter;

^*restrained parameter