Hi all,<div><br></div><div> I am refining  a protein with metal-ligand complexes. Is it possible to refine only y coordinates for an atom (on two fold)  while keeping X and Z fixed using Phenix? Also is there a way to calculate something like anomalous difference-difference map (Anomalous Fobs - Anomalous Fcalc) to identify any additional atoms bound at metal sites.</div>
<div><br></div><div>Thanks in advance for the help!</div><div>Subhani</div>