List of protein structures in the test set.

aRes: atomic resolution of the protein structure in Å. bShape String: shape identified by PoreWalker, going from the lowest to the highest coordinate along the pore axis. D, U and S indicate decreasing diameter conical frustum, increasing diameter conical frustum and cylinder, respectively. c% centres in lines: percentage of pore centres at 1Å step that have been identified as part of one or more lines by PoreWalker. dR2 (PW-Hole): correlation of diameter values calculated by HOLE and PoreWalker at 1Å step.