bilayer

Parameters controlling bilayer generation

Single-valued attributes:

  • lipids: declaration of lipids in each leaflet in memgen format LIP1[:LIP2][//LIP3] where “:” is an intra-leaflet separator and “//” is an inter-leaflet separator (default: POPC)

  • lipid_conformers: declaration of which conformer index to use for each lipid in memgen format C1:C2//C3 (defaults to 0); must be congruent with the lipids attribute (default: 0)

  • mole_fractions: declaration of mole fractions of each lipid in each leaflet in memgen format R1:R2//R3; must be congruent with the lipids attribute (default: 1.0)

  • half_mid_zgap: extra gap between hydrophobic tails in bilayer during packing, Angstroms (default: 1.0)

  • solvents: string in memgen format SOL1:SOL2:… (default: TIP3)

  • solvent_mole_fractions: string in memgen format x_1:x_2:… (default: 1.0)

  • solvent_to_lipid_ratio: ratio of solvent molecules to lipids in each leaflet; must be specified if solvents are present (default: 32.0)

  • SAPL: estimate of surface area per lipid (Ų) for building initial patches (default: 75.0)

  • dims: box dimensions in x, y, and z in Å; must be specified for a bilayer-only system

  • npatch: box dimensions in number of patches in x and y

  • solution_gcc: solution density in g/cc (default: 1.0)

  • cation: name of salt cation (default: POT)

  • anion: name of salt anion (default: CLA)

  • salt_con: salt concentration in M

  • nloop: number of packmol GENCAN loops for every component

  • nloop_all: number of packmol GENCAN loops for altogether packing

  • tolerance: clash detection tolerance for packmol

  • seed: RNG seed (optional)

Subattributes: