OpenMM
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3PTB
Name
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Max minimization steps
1000
5000
10000
20000
50000
100000
∞
Equilibration time (ns)
Production time (ns)
System type
Protein
Protein-ligand
Protein structure
Remove
Drop protein PDB / CIF here or click to upload
Accepted: .pdb, .cif
Ligand CCD codes
Comma-separated. Auto-filled when the uploaded protein contains ligands.
Ligand file
Add ligand
Remove
Ligand charge
Auto
-5
-4
-3
-2
-1
0
1
2
3
4
5
Drop ligand SDF / MOL / MOL2 here or click to upload
Accepted: .sdf, .mol, .mol2
Protein model
amber19-all.xml
amber19/protein.ff19SB.xml
amber19/protein.ff19ipq.xml
amber19/DNA.OL21.xml
amber19/lipid21.xml
amber14-all.xml
amber14/protein.ff14SB.xml
amber14/protein.ff15ipq.xml
amber14/RNA.OL3.xml
amber14/GLYCAM_06j-1.xml
charmm36_2024.xml
charmm_polar_2023.xml
charmm_polar_2019.xml
charmm_polar_2013.xml
amber96.xml
amber99sb.xml
amber99sbildn.xml
amber99sbnmr.xml
amber03.xml
amber10.xml
Water model
amber19/opc.xml
amber19/tip3p.xml
amber19/tip3pfb.xml
amber19/tip4pew.xml
amber19/tip4pfb.xml
amber19/spce.xml
amber19/opc3.xml
amber14/tip3p.xml
amber14/opc.xml
amber14/tip3pfb.xml
amber14/tip4pew.xml
amber14/tip4pfb.xml
amber14/spce.xml
amber14/opc3.xml
charmm36_2024/water.xml
charmm36_2024/spce.xml
charmm36_2024/tip3p-pme-b.xml
charmm36_2024/tip3p-pme-f.xml
charmm36_2024/tip4pew.xml
charmm36_2024/tip4p2005.xml
charmm36_2024/tip5p.xml
charmm36_2024/tip5pew.xml
tip3p.xml
tip3pfb.xml
tip4pew.xml
tip4pfb.xml
tip5p.xml
spce.xml
swm4ndp.xml
opc.xml
opc3.xml
Equilibration timestep (fs)
2
4
Production timestep (fs)
2
4
Equilibration steps
Production steps
Box size (Ã…)
Ion concentration (M)
Equilibration temperature (K)
Production temperature (K)
Equilibration pressure (bar)
Production pressure (bar)
Equilibration friction (1/ps)
Production friction (1/ps)
Equilibration trajectory frequency (steps)
200
500
1000
2000
5000
10000
Production trajectory frequency (steps)
500
1000
2000
5000
10000
Starting restraint force constant
Remove waters
False
True
2D RMSD step size
pH
API example
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