From: Mohan maruthi sena (
Date: Sun Apr 07 2013 - 10:28:52 CDT

Hi all,
            Generally to find the center of protein in vmd we use the
following commands,
               set sel [atomselect top all]
                set mat [measure center $sel] , if we want to move this
center to some other point x,y,z . How can we do this in vmd. I have tried
using option trans
but , the center of protein is not exactly coinciding with (x,y,z). The
protein is lying close to x,y,z. I have used the following options
  set sel [atomselect top protein]
   set cen { x, y, z } to move protein current center to this desired
point center.
   set mat [ trans offset $cen]