BioLiP: distance cutoffs of ligand binding residues

Dear Forum members,

The BioLiP database provides the list of residues that bind a ligand for every PDB entry. I would like to ask what cutoffs (e.g. distance in Angstroms) were used to determine these residues, i.e. how close the atoms of ligands and protein amino acids have to be to consider them interacting/binding.

Best wishes,
Gyorgy Abrusan