computer programs
Manually defined distance restraints can be useful during structure refinement, particularly in low-resolution refinement where the additional restraints are needed to maintain appropriate stereochemical geometry. A large number of restraints are often required when refining macromolecular structures. Currently, restraint definition requires manual editing of a text file, which can be a daunting task when working with a large number of restraints. ResDe (Restraint Definer) is a suite of Python-based tools that allows the user to quickly define and edit restraints using the PyMOL graphical interface.