[gmx-users] adding water with genbox

[Irem Altan]

Hi,

I am using gromacs 4.6, so I still use genbox to solvate the protein I’m simulating. How does genbox adjust the density? I am trying to pack water molecules in a tight protein unit cell, and genbox is having problems packing enough water molecules for the water density to be ~1g/cm^3. If I modify vdwradii.dat to shrink the radii a little bit, does that affect the maximum density that the solvent can have? In other words, will genbox add as many water molecules as it can if the radii are small enough, or will it stop when d=1g/cm^3?

Best,
Irem