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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Biochim Biophys Acta. 2011 Jul 6;1808(10):2403–2412. doi: 10.1016/j.bbamem.2011.06.018

Table 2.

Diffusion coefficients of the AS1- and AS2-containing peptides employed in this study.

Diffusion coefficient (10-10 m2/s)a
Buffer
 DMPC/DHPC
 [DMPC/DMPG 4:1]/DHPC
Peptide Dfree Dcomplex Dbicelle x (%)b Dcomplex Dbicelle x (%)b
AS1p-Af1503 1.6 ± 0.07 1.2 ± 0.07 0.38 ± 0.01 36 0.96 ± 0.1 0.36 ± 0.01 52
AS2p-Af1503 1.6 ± 0.02 0.39 ± 0.01 0.37 ± 0.01 98 0.40 ± 0.01 0.37 ± 0.01 98
AS1p-EnvZEc 1.6 ± 0.05 1.2 ± 0.04 0.38± 0.02 36 1.1 ± 0.04 0.39 ± 0.01 43
AS2p-EnvZEc 1.6 ± 0.04 1.0 ± 0.05 0.35 ± 0.01 48 1.1 ± 0.03 0.37 ± 0.01 40
AS1p-NarXEc 1.5 ± 0.05 0.40 ± 0.01 0.38 ± 0.01 98 0.35 ± 0.01 0.36 ± 0.01 100
AS2p-NarXEc 1.6 ± 0.04 1.0 ± 0.02 0.37 ± 0.01 49 0.92 ± 0.02 0.37 ± 0.01 58
AS1p-TarEc 1.4 ± 0.04 0.38 ± 0.01 0.37 ± 0.01 99 0.35 ± 0.01 0.36 ± 0.01 100
AS2p-TarEc 1.7 ± 0.06 1.2 ± 0.04 0.38 ± 0.01 42 1.2 ± 0.05 0.37 ± 0.01 40
a

Diffusion coefficients in D2O normalized according to the diffusion of HDO in order to account for differences of viscosity.

b

Estimation of the percentage of peptide bound to the phospholipid bicelle as calculated by equation 1. Significantly different values are indicated in bold font.