Re: [gmx-users] Gromacs simulation with PEG

2017-11-26 Thread Patrick Fuchs
FYI, starting from GROMOS 53a6 parameters, we have refined them against the free energy of solvation of dimethoxyethane in water (and cyclohexane) (DOI: 10.1021/ct300245h). These new parameters are now part of the new 2016H66 force field (DOI: 10.1021/acs.jctc.6b00187). Best, Patrick Le 12/11

Re: [gmx-users] Gromacs simulation with PEG

2017-11-12 Thread Amali Guruge
Dear Gromacs Users, Thank you very much. On Mon, Nov 13, 2017 at 9:56 AM, Justin Lemkul wrote: > > > On 11/12/17 5:51 PM, Amali Guruge wrote: > >> Dear Gromacs users, >> >> I tried to simulate a system which contains PEG and water. According to >> the >> phase diagram of PEG, it should form mic

Re: [gmx-users] Gromacs simulation with PEG

2017-11-12 Thread Justin Lemkul
On 11/12/17 5:51 PM, Amali Guruge wrote: Dear Gromacs users, I tried to simulate a system which contains PEG and water. According to the phase diagram of PEG, it should form micells after the simulation. However, after the simulation PEG doesn't form micells. What could be the reason for this.

Re: [gmx-users] Gromacs simulation with PEG

2017-11-12 Thread Dallas Warren
You used the incorrect forcefield. We have found that GROMOS53a6 and associated forcefields reproduce poorly the interactions between PEG and water. We have made improvements on that, and will be publishing something soon. Catch ya, Dr. Dallas Warren Drug Delivery, Disposition and Dynamics Monas

[gmx-users] Gromacs simulation with PEG

2017-11-12 Thread Amali Guruge
Dear Gromacs users, I tried to simulate a system which contains PEG and water. According to the phase diagram of PEG, it should form micells after the simulation. However, after the simulation PEG doesn't form micells. What could be the reason for this. Can anyone help me. Thank you. -- Gromacs