RESIDUE   OBF     16
CONECT      N      3 CA   H    H2  
CONECT      CA     4 N    CB   C    HA  
CONECT      CB     4 CA   CG   H1B  H2B 
CONECT      CG     4 CB   FG1  FG2  HG  
CONECT      FG1    1 CG  
CONECT      FG2    1 CG  
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      H      1 N   
CONECT      HA     1 CA  
CONECT      H1B    1 CB  
CONECT      H2B    1 CB  
CONECT      HG     1 CG  
CONECT      H2     1 N   
CONECT      OXT    2 C    HXT 
CONECT      HXT    1 OXT 
END   
HET    OBF             16
HETNAM     OBF (2S)-2-amino-4,4-difluorobutanoic acid
FORMUL      OBF    C4 H7 F2 N O2