Pymol the question is, into how much trouble do you want to get ? MD simulations ? Energy minimisation ? Then you will need to do more than just mutate on the sreen one residue with Pymol. Jürgen On 2 Dec 2008, at 17:29, Hongmin Zhang wrote: > Dear All, > I am trying to mutate a single amino acid in a PDB to see if the > mutant > disturbs ligand binding. Does anyone know any software that can do > such work? > Thanks a lot! - Jürgen Bosch University of Washington Dept. of Biochemistry, K-426 1705 NE Pacific Street Seattle, WA 98195 Box 357742 Phone: +1-206-616-4510 FAX: +1-206-685-7002 Web: http://faculty.washington.edu/jbosch