Simultaneous water and protein minimization

From: jkmann_at_buffalo.edu
Date: Wed Nov 18 2009 - 15:58:22 CST

Hi everyone,

When I do simulation for protein, I first solvate my protein and fix its
coordinate and submit the job for water minimization.Then I retrieve the dcd
file, load it to the existing pdb file and save pdb with coordinates from last
frame of dcd trajectory.
Now I use the coordinates of this pdb in the NAMD configuration file to do
protein minimization.So, its a kind of two step process but as I do my job
submission to some outside cluster, everytime I have to bring back the structure
to my CPU and then again load to the outside system which again puts me to long
Queue. To avoid this I'm trying to modify my configuration file such that it
first takes the coordinates from fixed pdb and do water minimization and
proceeding that take coordinate from water minimized structure to do further
dynamics, all in one step. Has anyone tried this before or is it just impossible?
I'm trying to use some if else commands but NAMD doesn't recognize these commands.
I hope my question is understandable and any help will be appreciated.

Thank you

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