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Forcefield Parameters

Example Applications

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Particle Definitions
Forcefield Parameters

The definition of all CG particle types plus the interaction matrix. It also contains the topology for water particles. This file is required for all simulations. Version 2.1 is required for peptides & proteins.

martini_v2.0.itp
martini_v2.1.itp
Last Updated on Saturday, 23 January 2010 15:11
 
Input Parameters
Forcefield Parameters

Example of a general input parameter file.

martini_v2.x_example.mdp
Last Updated on Saturday, 23 January 2010 15:13
 
General Topology
Forcefield Parameters

Example of a general topology file. Depending on the system, one or several of the molecular topology files should be included (martini_v2.x_*.itp).

martini_v2.x_example.top
Last Updated on Saturday, 23 January 2010 15:13
 
Lipids
Forcefield Parameters

Including all common PC and PEs, with hexanoyl, lauroyl, palmitoyl, oleoyl, stearoyl and arachidonoyl tails. Trial topologies for a sphingolipid and for PG and PS lipids are also included.

martini_v2.0_lipids.itp
Last Updated on Saturday, 23 January 2010 15:13
 
Surfactants
Forcefield Parameters

Featuring lysoPCs, DPC, palmitoic acid.

martini_v2.0_surfactants.itp
Last Updated on Saturday, 23 January 2010 15:14
 
Sterols
Forcefield Parameters

Currently cholesterol and cholesteryl oleate only.

martini_v2.0_cholesterol.itp
Last Updated on Saturday, 23 January 2010 15:14
 
Solvents
Forcefield Parameters

Various saturated and unsaturated alkanes, alcohols, triglycerides, and many small organic solvents.

martini_v2.0_solvents.itp
Last Updated on Saturday, 23 January 2010 15:15
 
Ions
Forcefield Parameters

Sodium, chloride, calcium and more.

martini_v2.0_ions.itp
Last Updated on Saturday, 23 January 2010 15:17
 
Amino Acids
Forcefield Parameters

All twenty amino acids.

martini_v2.1_aminoacids.itp
Last Updated on Saturday, 23 January 2010 15:14
 
Sugars
Forcefield Parameters

Common mono- and disaccharides, and amylose.

martini_v2.0_sugars.itp
Last Updated on Saturday, 23 January 2010 15:13
 
Polymers
Forcefield Parameters

Currently PEG and PEO, and a G5 PAMAM dendrimer

martini_v2.0_polymers.itp
Last Updated on Saturday, 23 January 2010 15:13
 
Other
Forcefield Parameters

Molecules not fitting in other categories.

Currently contains topologies for voltage-sensitive dyes

martini_v2.0_other.itp
Last Updated on Saturday, 23 January 2010 15:15
 
Pure water solvent
Example Applications

Equilibrated at T=300K, P=1 bar.
System size: water 2000 (corresponding to 8000 real water molecules).

water.gro
water.mdp
water.top
Last Updated on Saturday, 23 January 2010 15:15
 
Hexadecane slab in water.
Example Applications

Equilibrated at T=300K, constant area and perpendicular Pz=1 bar.
System size: hexadecane 100, water 400.

hexadecane_slab.gro
hexadecane_slab.mdp
hexadecane_slab.top
Last Updated on Saturday, 23 January 2010 15:15
 
Salt solution
Example Applications

Equilibrated at T=300K, P=1 bar.
System size: sodium 8, chloride 8, water 388.

nacl+wat.gro
nacl+wat.mdp
nacl+wat.top
Last Updated on Saturday, 23 January 2010 15:15
 
DPPC membrane
Example Applications

Equilibrated at T=325K, zero surface tension.
System size: lipids 128, water 2000.

dppc_bilayer.gro
dppc_bilayer.mdp
dppc_bilayer.top
Last Updated on Saturday, 23 January 2010 15:14
 
DOPC and POPE membranes.
Example Applications

Equilibrated at T=300K, zero surface tension.
System size: lipids 128, water 1500.

dopc_bilayer.gro
dopc_bilayer.mdp
dopc_bilayer.top
pope_bilayer.gro
pope_bilayer.mdp
pope_bilayer.top
Last Updated on Saturday, 23 January 2010 15:16
 
DPPC/cholesterol bilayer
Example Applications

Equilibrated at T=300K, zero surface tension.
System composition: DPPC 38, cholesterol 16 (0.3 mole fraction), water 350.

dppc_chol.gro
dppc_chol.mdp
dppc_chol.top
Last Updated on Saturday, 23 January 2010 15:13
 
Poly-unsaturated lipid/cholesterol bilayer
Example Applications

Equilibrated at T=298K, zero surface tension.
System composition: DAPC 38, cholesterol 4 (0.1 mole fraction), water 142.

dapc_chol.gro
dapc_chol.mdp
dapc_chol.top
Last Updated on Saturday, 23 January 2010 15:16
 
Model raft bilayer
Example Applications

Equilibrated at T=295K, zero surface tension.
System composition: DPPC 828, Di-C18:2-PC 540, cholesterol 576 (0.42:0.28:0.3 ratio), water 12600.

raft.gro
raft.mpd
raft.top
Last Updated on Saturday, 23 January 2010 15:15
 
Solvated DOPC and POPE vesicles
Example Applications

Equilibrated at T=325K, P=1 bar.
System size: lipids 877, water 61552
(the DPPC vesicle is in a cubix box, the DOPE vesicle in an octahedral box)

dppc_vesicle.gro
dppc_vesicle.mdp
dppc_vesicle.top
pope_vesicle.gro
pope_vesicle.mdp
pope_vesicle.top
Last Updated on Saturday, 23 January 2010 15:15
 
Bi-lamellar DOPE system
Example Applications

Non-equilibrated, expected to form an inverted hexagonal phase at T > 330K.
System composition: lipids 1024, water 800.

dope_2bilayer_lowhydration.gro
dope_2bilayer_lowhydration.mdp
dope_2bilayer_lowhydration.top
Last Updated on Saturday, 23 January 2010 15:17
 
DPC micelle.
Example Applications

Equilibrated at T=300K, P=1 bar.
System composition: surfactants 54, water 6400.

dpc.gro
dpc.mdp
dpc.top
Last Updated on Saturday, 23 January 2010 15:17
 
Toy peptide
Example Applications

The toy peptide contains all amino acids.
Half of the peptide is helical, the other half beta strand.
Equilibrated at T=300K, P=1 bar.
System composition: 1 peptide, water 1538.

toypeptide.gro
toypeptide.mdp
toypeptide.top
toypeptide.itp
Last Updated on Saturday, 23 January 2010 15:16
 
PEO polymers in water.
Example Applications

Equilibrated at T=300K, constant pressure P=1 bar.
System size: 56 peo polymers (of 36 monomers), water 13312.

peo36.gro
peo36.mdp
peo36.top
Last Updated on Saturday, 23 January 2010 15:17
 
Voltage sensitive dyes
Example Applications

Voltage sensitive dye Di-4-ASPBS bound to a POPC membrane

System size: 1 dye, lipids 128, water 1489.

dye1.gro
dye1.mdp
dye1.top
dye1.ndx

A charged voltage sensitive dye Di-12P-ASPBS bound to a POPC membrane

System size: 1 dye, 2 sodium counterions, lipids 128, water 1481

dye4.gro
dye4.mdp
dye4.top
dye4.ndx
Last Updated on Saturday, 23 January 2010 15:18
 
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