Table 3.
Correlation times, ϕc, for rotational depolarization in the planes parallel and perpendicular to the SLB obtained from an associative model fit to the anisotropy data of Fig. 3
| Data from the associative model fit to the time-resolved fluorescence anisotropy | |||
|---|---|---|---|
|
ϕcParallel to bilayer |
ϕcPerpendicular to bilayer |
||
| Lipid headgroup-associated peptide (lifetime = τ2) | Quenched or self-associated peptide (lifetime = τ1) | Lipid headgroup-associated peptide (lifetime = τ2) | Quenched or self-associated peptide (lifetime = τ1) |
| 2 ns (β2 = 24%) | 25 ns (β1 = 76%) | (β2 = 0) | >25 ns (β1 = 100%) |
ϕc-Values were obtained for two distinguishable populations of peptide: lipid headgroup-associated and quenched or self-associated. β is the fractional contribution of these populations to depolarization in each plane.