RESIDUE   0Y9     18
CONECT      N      3 CA   H    H2  
CONECT      CA     4 N    C22  C23  C   
CONECT      C22    4 CA   C23  C24  H13 
CONECT      C23    4 CA   C22  H14  H15 
CONECT      C24    3 C22  C25  H16 
CONECT      C25    3 C24  H17  H18 
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      H      1 N   
CONECT      H13    1 C22 
CONECT      H14    1 C23 
CONECT      H15    1 C23 
CONECT      H16    1 C24 
CONECT      H17    1 C25 
CONECT      H18    1 C25 
CONECT      H2     1 N   
CONECT      OXT    2 C    HXT 
CONECT      HXT    1 OXT 
END   
HET    0Y9             18
HETNAM     0Y9 (1R,2S)-1-amino-2-ethenylcyclopropanecarboxylic acid
FORMUL      0Y9    C6 H9 N O2