About the native structures of knottins:

[pdb code]_KN.pdb are renumbered files
[pdb code]_KNF.pdb are renumbered files superimposed onto 2btcI_KNF.pdb
[pdb code]_KNclean.pdb are files in which 'HYP' have been substituted by 'PRO', 'GCU' by 'GLU', and 'HETATM' by ATOM'
[pdb_code]_perR.pdb files correspond to cyclic knottins for which the pseudo-extremities N- and C-ter have been switched manually