Changing water models

The functionality of OpenMM will (eventually) include everything that one would need to run modern molecular simulation.
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Ali Eltareb
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Joined: Tue Jul 30, 2019 10:46 am

Changing water models

Post by Ali Eltareb » Wed Feb 09, 2022 7:04 pm

Hi,

I have some files from gromacs (the topology and gro file) that I wanted to run using OpenMM. The system contains a protein and some water molecules.

I can run the system with OpenMM, however I wanted to change the water model that I am using to 'qtip4pf'. I have the forcefield xml file for this water model. The water model that I was using for gromacs is tip4p2005.

The modeller class in OpenMM doesn't support the qitp4pf water model, so I can't use the convertWater function in modeller.

What would be the easiest route to get this done?

Ali

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