Structure based on ?

Ideal structure
Name: cysteine-s-sulfonic acid
Formula: C3 H7 N O5 S2
Weight: 201.221
SMILES: "N[CH](CS[S](O)(=O)=O)C(O)=O"
Spacial conformation based on PDB ?.
Also present in other 19 PDB entries.
RESIDUE   CSU     18
CONECT      N      3 CA   H    H2  
CONECT      CA     4 N    CB   C    HA  
CONECT      CB     4 CA   SG   HB2  HB3 
CONECT      SG     2 CB   S   
CONECT      S      4 SG   OD1  OD2  OD3 
CONECT      C      3 CA   O    OXT 
CONECT      O      1 C   
CONECT      OXT    2 C    HXT 
CONECT      OD1    1 S   
CONECT      OD2    2 S    HD2 
CONECT      OD3    1 S   
CONECT      H      1 N   
CONECT      H2     1 N   
CONECT      HA     1 CA  
CONECT      HB2    1 CB  
CONECT      HB3    1 CB  
CONECT      HXT    1 OXT 
CONECT      HD2    1 OD2 
END   
HET    CSU             18
HETNAM     CSU CYSTEINE-S-SULFONIC ACID
FORMUL      CSU    C3 H7 N O5 S2

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Bioinformatics Unit
Weizmann Institute of Science