Table 1. Diffusion Coefficients D (mean ± standard deviation) for the Different Bilayers before and after HA Addition (see the Supporting Information) Measured on Glass Coverslips via Confocal FCS at Room Temperaturea.
| lipid composition | D (μm2/s) | D (μm2/s) from ref (22) | D (μm2/s) in the presence of HA |
|---|---|---|---|
| DOPC | 6.0 ± 0.3 | 6.3 ± 0.2 | 5.6 ± 0.4 |
| DOPC/SM (1:1) | 1.8 ± 0.4 | 2.6 ± 0.2 | 1.1 ± 0.6 |
| DOPC/SM/Chol (2:2:1) | 4.6 ± 0.9 (Ld); 0.4 ± 0.1 (Lo)b | 5.15 ± 0.15 (Ld); 0.255 ± 0.058 (Lo) | 4 ± 2 (Ld); 0.3 ± 0.2 (Lo)b |
Values are compared to those reported in ref (22) in the absence of HA. For each bilayer composition before and after HA addition, 12–25 measurements were performed in three independent experiments.
The distinction between the macroscopic Lo and Ld domains is based on the fluorescence intensity differences of DiD, because this dye preferentially partitions into Ld regions.25