Hi John, here is the complete refinement example emulating exactly what you are trying to do: http://cci.lbl.gov/~afonine/group_occ_refinement/ Just look at the files and run "run" file to see the result. It takes less than 20 secs to run on my computer. All it does, it refines one occupancy for alternative conformation A and one occupancy per alternative conformation B. Note the selections I used to specify the groups. Please let me know if you have any questions. Pavel. John Bruning wrote:

Hi,

I have a ligand with dual conformations. I want to do group occupancy refinement on the conformers (each conformer is one group). I keep having trouble. The ligand is one chain named chain E and conformer 1 has residue name ADRG and conformer 2 has residue name BDRG. This is what I suppose my .def file should have in it:

occupancies { individual = None group = "chain E and resname ADRG" group = "chain E and resname BDRG" one_occupancy_group_per_residue = True }

When I run this it tells me I have an ambiguous selection.

Any ideas why this isn't working and how I can change my .def file to make it work? _______________________________________________ phenixbb mailing list [email protected] http://www.phenix-online.org/mailman/listinfo/phenixbb