Yes - you can "FixAtom" - I cant remember which menu it is under - real space rene I think.. Will check tomorrow
Eleanor On 13 March 2018 at 19:46, Steve Chou <stevezc...@gmail.com> wrote: > Dear Coot developers and CCP4 list subscribers, > > The density of my map is not perfect. However, I know where a specific > atom should be located. Every time I did real space fitting, the atom and > the associated chemical groups in the whole ligand ran away. Is there a way > to fix the position of this atom, and let the force field drive the fitting > of the rest of the atoms in the ligand? > Many thanks in advance! > Steve > > -- > Steve Chou > > >