MESP visualization

From: "Victor Anisimov" <victor "-at-" fqspl.com.pl>
Subject: MESP visualization
Date: Fri, 5 Apr 2002 15:53:21 +0200

Dear CCLers,
 I'd like to make nice 3D visualization of a molecular electrostatic
 potential calculated
 for 120 000 atoms protein system on Connolly surface. My MESP file is a
 textual file
 with three columns corresponding to Cartesian coordinates of a point and
 fourth
 column containing MESP value, i.e. each line corresponds to a separate point
 on
 the Connolly surface. Number of points on one Connolly surface is about one
 million.
 No cube format is possible I guess by size of the molecule and number of the
 mesh
 points one would need to store in the cube file.
 Can someone suggest me a free software that can read this file and draw nice
 3D
 map with colours corresponding to MESP value? My hardware limitation is 1GB
 RAM and Windows/Linux single Athlon CPU machine. I'd greatly appreciate any
 hints.
 Thank you in advance,
 Victor.