Structure based on 1bfb

Ideal structure
Name: 4-deoxy-2-o-sulfo-alpha-l-threo-hex-4-enopyranuronic acid
Formula: C6 H8 O9 S
Weight: 256.187
SMILES: "O[CH]1OC(=C[CH](O)[CH]1O[S](O)(=O)=O)C(O)=O"
Spacial conformation based on PDB 1bfb.
Also present in other 20 PDB entries.
RESIDUE   UAP     24
CONECT      S      4 O2   O1S  O2S  O3S 
CONECT      C1     4 O1   C2   O5   H1  
CONECT      O1     2 C1   HO1 
CONECT      C2     4 C1   O2   C3   H2  
CONECT      O2     2 S    C2  
CONECT      C3     4 C2   O3   C4   H3  
CONECT      O3     2 C3   HO3 
CONECT      C4     3 C3   C5   H4  
CONECT      C5     3 C4   O5   C6  
CONECT      O5     2 C1   C5  
CONECT      C6     3 C5   O6B  O6A 
CONECT      O1S    2 S    HO1S
CONECT      O2S    1 S   
CONECT      O3S    1 S   
CONECT      O6B    2 C6   HO6B
CONECT      O6A    1 C6  
CONECT      H1     1 C1  
CONECT      HO1    1 O1  
CONECT      H2     1 C2  
CONECT      H3     1 C3  
CONECT      HO3    1 O3  
CONECT      H4     1 C4  
CONECT      HO1S   1 O1S 
CONECT      HO6B   1 O6B 
END   
HET    UAP             24
HETSYN     UAP 4-deoxy-2-O-sulfo-alpha-L-threo-hex-4-enuronic acid; 4-
HETSYN   2 UAP deoxy-2-O-sulfo-L-threo-hex-4-enuronic acid; 4-deoxy-2-
HETSYN   3 UAP O-sulfo-threo-hex-4-enuronic acid
HETNAM     UAP 4-deoxy-2-O-sulfo-alpha-L-threo-hex-4-enopyranuronic ac
HETNAM   2 UAP id
FORMUL      UAP    C6 H8 O9 S1

This OCA MONOMER page
uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science