RESIDUE   DBU     14
CONECT      N      3 CA   H1   H2  
CONECT      CA     3 N    CB   C   
CONECT      CB     3 CA   CG  1HB  
CONECT      CG     4 CB  1HG  2HG  3HG  
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      OXT    2 C    HXT 
CONECT     1HB     1 CB  
CONECT     1HG     1 CG  
CONECT     2HG     1 CG  
CONECT     3HG     1 CG  
CONECT      H1     1 N   
CONECT      HXT    1 OXT 
CONECT      H2     1 N   
END
HET    DBU             14
HETSYN     DBU Z-DEHYDROBUTYRINE
HETNAM     DBU (2E)-2-AMINOBUT-2-ENOIC ACID
FORMUL      DBU    C4 H7 N1 O2