... wLake 1.7 . wLake is a tool which allows to identify clusters of a structural water molecules in given superimposed 3D structures. Put your coordinates in PDB format into the text area. Select a distance threshold. Two water molecules from different structures will be concidered as located in the same space point if the distance between centers of oxygen atoms is less than this threshold. ... EACH STRUCTURE INCLUDING ITS WATER MOLECULES MUST BE PRESENTED AS SEPARATE MODEL: EXAMPLE. ...