RE: [gmx-users] Simulation problem with extended membrane system!

2006-09-07 Thread chris . neale
If you can't write a script, then do the minimization and equilibration with water frozen in the z dimension (freeze_groups = water; freeze_dim = n n y) or use constraints in the z dimension (posre.itp force constant 1000 along z and 0 along x and y). This will stop it from going into the membrane.

Re: [gmx-users] Simulation problem with extended membrane system!

2006-09-06 Thread liu xin
Hi ChrisThank you for your suggestions!These days I also tried anisotropic and semiisotropic for my simulation, but I still got the same result, so I wonder maybe there's something wrong with my initial structure, but it will take time to check it out. I'm trying to use the method you suggested, I

Re: [gmx-users] Simulation problem with extended membrane system!

2006-09-04 Thread chris . neale
It is unclear why your second method works for you. However, given that it does, just use genbox -cs spc216.gro -cp 183_system_that_worked.gro -box 9.2 9.2 8.3 and then use your own script to remove any spc waters that were put inside the membrane and modify the nubers in your topology file accordi