MODRES 2A2X HYP P   60  PRO  4-HYDROXYPROLINE                                   
MODRES 2A2X SMF P   63  PHE  4-SULFOMETHYL-L-PHENYLALANINE                      
MODRES 2A2X ALC P   64  ALA  2-AMINO-3-CYCLOHEXYL-PROPIONIC ACID