VISTRAJ is an application which allows 3D visualization, manipulation and e
diting of protein conformational space using probabilistic maps of this spa
ce called 'trajectory distributions'. Trajectory distributions serve as inp
ut to FOLDTRAJ which samples protein structures based on the represented co
nformational space. VISTRAJ also allows FOLDTRAJ to be used as a tool for h
omology model creation, and structures may be generated containing post-tra
nslationally modified amino acids.