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. 2018 Feb 13;8:2956. doi: 10.1038/s41598-018-20965-2

Table 2.

Simulation details and results.

Simulation Type POPC:chol:Peptide Peptide Analysis Time (ns) Peptide Height (Å) Number of Salt Bridges per peptide
Lys-Phos Glu-Choline
Set 1 surface-bound 90:10:2 Neu 400 2.2 ± 0.1 3.9 (73) 1.3 (13)
Hyd 400 0.7 ± 0.1 2.7 (57) 1.6 (15)
Pos 400 3.3 ± 0.1 5.0 (73) 0.9 (13)
Neg 400 6.4 ± 0.3 3.4 (78) 2.7 (15)
Set 2 edge-bound low density 80:8:8 Neu 400 NA 1.0 (40) 0.3 (6)
Hyd 400 NA 0.7 (24) 0.3 (6)
Pos 400 NA 1.9 (35) 0.3 (6)
Neg 400 NA 1.3 (37) 0.6 (6)
Set 3 edge-bound high density 60:6:8 Neu 470 NA 0.5 (92) 0.2 (9)
Hyd 470 NA 0.1 (41) 0.2 (7)
Pos 470 NA 1.2 (50) 0.3 (11)
Neg 470 NA 0.9 (130) 0.5 (10)
Set 4 nanodisc 150:15:24 Neu 500 ns NA 0.7 0.2

Peptide height is defined as the vertical distance between peptides and C2 atoms of oleoyl acyl chains, and is not applicable (NA) to edge-bound simulations. Salt bridges were measured as the number of contacts between nitrogen of amino group of Lys and phosphorus of phosphate group of POPC, and carbon of carboxyl group of Glu and nitrogen of choline group of POPC, averaged over all simulation frames and divided by the number of peptides. Average lifetimes (in ps) are presented in parentheses. Lifetimes for Set 4 are not presented because the trajectory was saved every 240 ps, which is more than typical lifetimes