RESIDUE   B3A     16
CONECT      CG     4 CB   HG1  HG2  HG3 
CONECT      CB     4 CG   N    CA   HB  
CONECT      N      3 CB   H    H2  
CONECT      CA     4 CB   C    HA1  HA2 
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      OXT    2 C    HXT 
CONECT      HG1    1 CG  
CONECT      HG2    1 CG  
CONECT      HG3    1 CG  
CONECT      HB     1 CB  
CONECT      H      1 N   
CONECT      H2     1 N   
CONECT      HA1    1 CA  
CONECT      HA2    1 CA  
CONECT      HXT    1 OXT 
END   
HET    B3A             16
HETNAM     B3A (3S)-3-AMINOBUTANOIC ACID
FORMUL      B3A    C4 H9 N1 O2