Fig. 2: Metal3D probability density.
From: Metal3D: a general deep learning framework for accurate metal ion location prediction in proteins

Probability evolution in HCA2 (PDB 2CBA) for different probability cutoffs. Isosurfaces highlighted at different cutoffs (a) p = 0.1 (b) p = 0.2 (c) p = 0.9 (d) inset on active site of HCA2 p = 0.9 Predicted positions in darkpurple, experimental position in green, crystal water in red.