You may also consider HYDRO suite: http://leonardo.fcu.um.es/macromol/programs/programs.htm
It does calculate the radius of gyration, but also stokes radius, diffusion coefficients, etc. On Wed, 2008-10-29 at 23:39 -0400, David M Shechner wrote: > Hallo, one and all, > > I was wondering if anyone knew of a quick method (say, a publicly-available > script, or subroutine in a CCP4 program) by which one might calculate the > Radius of Gyration of a molecule, given its pdb file. Any ideas? > > Many thanks, > Dave Shechner > > Graduate Student > Bartel Laboratory > Whitehead Institute/MIT -- Edwin Pozharski, PhD, Assistant Professor University of Maryland, Baltimore ---------------------------------------------- When the Way is forgotten duty and justice appear; Then knowledge and wisdom are born along with hypocrisy. When harmonious relationships dissolve then respect and devotion arise; When a nation falls to chaos then loyalty and patriotism are born. ------------------------------ / Lao Tse /