RESIDUE   B3S     17
CONECT      N      3 CA   H    H2  
CONECT      OD     2 CG   HD  
CONECT      CG     4 OD   CA   HG3  HG2 
CONECT      CA     4 N    CG   CB   HA  
CONECT      CB     4 CA   C    HB1  HB2 
CONECT      C      3 CB   O    OXT 
CONECT      O      1 C   
CONECT      OXT    2 C    HXT 
CONECT      H      1 N   
CONECT      H2     1 N   
CONECT      HD     1 OD  
CONECT      HG3    1 CG  
CONECT      HG2    1 CG  
CONECT      HA     1 CA  
CONECT      HB1    1 CB  
CONECT      HB2    1 CB  
CONECT      HXT    1 OXT 
END   
HET    B3S             17
HETNAM     B3S (3R)-3-AMINO-4-HYDROXYBUTANOIC ACID
FORMUL      B3S    C4 H9 N O3