MODRES 4THN NAL I    3  ALA  BETA-(2-NAPHTHYL)-ALANINE                          
MODRES 4THN AIB I   22  ALA  ALPHA-AMINOISOBUTYRIC ACID                         
MODRES 4THN AIB I   23  ALA  ALPHA-AMINOISOBUTYRIC ACID                         
MODRES 4THN ALC I   25  ALA  2-AMINO-3-CYCLOHEXYL-PROPIONIC ACID