. Author manuscript; available in PMC: 2018 Apr 20.

Published in final edited form as: J Phys Chem B. 2017 Jan 26;121(15):3424–3436. doi: 10.1021/acs.jpcb.6b09007

Table 3.

Experimentally measured differences in nitrile’s absorption energy (Δν_obs ) when moved from αLAX(25) to αLAX(16) for DMPC vesicles containing varying concentrations of sterol and 1 mM peptide. Error in Δν_obs represents one standard deviation of at least three experimental measurements.

Sterol (mol %)	Cholesterol-DMPC	6-ketocholestanol-DMPC
Sterol (mol %)	Δν_obs (cm⁻¹)	Δν_obs (cm⁻¹)
0	2.59 ± 0.08	2.6 ± 0.2
5	2.79 ± 0.01	2.8 ± 0.1
10	2.85 ± 0.03	2.85 ± 0.04
15	2.80 ± 0.02	2.83 ± 0.01
20	2.75 ± 0.02	2.86 ± 0.07
25	2.62 ± 0.02
30	2.53 ± 0.02	2.9 ± 0.2
40	2.37 ± 0.07	3.03