MDAnalysis translator for MMSchema

This is part of the MolSSI Molecular Mechanics Interoperable Components (MMIC) project. This package provides translators between MMSchema and MDAnalysis.

API

mmic_mda provides 3 classes of translators for: molecules, trajectories, and forcefields.

Models

# Import models for MDAnalysis
from mmic_mda.models import MdaMol, MdaFF, MdaTraj
 
# Create mda objects from MMSchema models
mda_mol = MdaMol.from_schema(mm_mol)
mda_ff = MdaFF.from_schema(mm_ff)
mda_traj = MdaTraj.from_schema(mm_traj)
 
# Convert mda objects to MMSchema models
mm_mol = mda_mol.to_schema()
mm_ff = mda_ff.to_schema()
mm_traj = mda_traj.to_schema()

Components

Converting from MDAnalysis.Universe to MMElemental.models.Molecule is achieved with MdaToMolComponent:

 
# Create input for converting Mda to MMSchema molecule
trans_in = {
        "data_object": MDAnalysis.Universe,
        "data_units": mmic_mda.units
}
 
# Run conversion
trans_out = MdaToMolComponent.compute(trans_in)

mm_mol = trans_out.schema_object -> MMElemental.models.Molecule

Converting from MMElemental.models.Molecule to MDAnalysis.Universe is achieved with MolToMdaComponent:

# Create input for converting MMSchema to Mda molecule
trans_in = {
        "schema_object": MDAnalysis.Universe,
        "engine_version": '>=1.0.0' # reject conversion for MDAv < 1.0.0
)
 
# Run conversion
trans_out = MolToMdaComponent.compute(trans_in)

mda_uni = trans_out.data_object -> MDAnalysis.Universe

Copyright

Copyright (c) 2021, MolSSI

Acknowledgements

Project based on the Computational Molecular Science Python Cookiecutter version 1.5.