From: anu chandra (
Date: Mon Jul 06 2015 - 10:18:17 CDT

Dear VMD users,

I am working with membrane proteins. Here, I have coordinates of a membrane
protein system with upper and bottom layer of water molecules. I would
like to extract coordinates of upper layer of water molecules ( i.e water
molecules along Z-direction 36.0 to 41.0) to a separate pdb file. Can any
one help me to find a way to select molecules along a particular direction
(axis), here Z-axis?.

Many thanks in advance