Up to 10 pairs of LINKED RESIDUES can be input, in the form:-
LINKED RESIDUES --------------- HIS-ASP <- Residue-pair 1 HOH-*** <- Residue-pair 2 <- Residue-pair 3 <- Residue-pair 4 <- Residue-pair 5 <- Residue-pair 6 <- Residue-pair 7 <- Residue-pair 8 <- Residue-pair 9 <- Residue-pair 10
The above list defines which residues, not directly hydrogen-bonded to the ligand are to be included in the plot, provided they are hydrogen-bonded to a residue that is hydrogen-bonded to the ligand.
Each residue-pair shows: the residue-type hydrogen-bonded to the ligand, and the residue-type to be plotted if it is hydrogen-bonded to this first residue.
For example, "HIS-ASP" will include any Asp residues that are H-bonded to a His which is H-bonded to the ligand. More generally, "HIS-***" will show any residue H-bonded to the His. Similarly, "HOH-***" will include any residues in the protein that are connected to the ligand via a water molecule.