RESIDUE   HIS     21
CONECT      N      3 CA   H    H2  
CONECT      CA     4 N    C    CB   HA  
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      CB     4 CA   CG   HB2  HB3 
CONECT      CG     3 CB   ND1  CD2 
CONECT      ND1    3 CG   CE1  HD1 
CONECT      CD2    3 CG   NE2  HD2 
CONECT      CE1    3 ND1  NE2  HE1 
CONECT      NE2    3 CD2  CE1  HE2 
CONECT      OXT    2 C    HXT 
CONECT      H      1 N   
CONECT      H2     1 N   
CONECT      HA     1 CA  
CONECT      HB2    1 CB  
CONECT      HB3    1 CB  
CONECT      HD1    1 ND1 
CONECT      HD2    1 CD2 
CONECT      HE1    1 CE1 
CONECT      HE2    1 NE2 
CONECT      HXT    1 OXT 
END   
HET    HIS             21
HETNAM     HIS HISTIDINE
FORMUL      HIS    C6 H10 N3 O2 1+