[chimerax-users] Selection of the organic ligand

[Enrico Martinez]

Dear ChimeraX users!
Normally I use the selection name "ligand" to select all atoms of the
organic ligand. For example:
define centroid ligand name lig_com

sometimes depending on the pdb file, this command also selects one
residue (located in the pdb file just near the ligand), considering it
also as a part of the ligand.. May I use another selection to
explicitly exclude all 20 natural amino-acids from the ligand
selection?
Many thanks in advance!
Enrico