Structure based on 1b66

Ideal structure
Name: biopterin
Formula: C9 H11 N5 O3
Weight: 237.215
SMILES: "C[CH](O)[CH](O)c1cnc2N=C(N)NC(=O)c2n1"
Spacial conformation based on PDB 1b66.
Also present in other 5 PDB entries.
RESIDUE   BIO     28
CONECT      N1     2 C2   C8A 
CONECT      N2     3 C2   HN21 HN22
CONECT      C2     3 N1   N2   N3  
CONECT      N3     3 C2   C4   H3  
CONECT      C4     3 N3   O4   C4A 
CONECT      O4     1 C4  
CONECT      C4A    3 C4   C8A  N5  
CONECT      C8A    3 N1   C4A  N8  
CONECT      N8     2 C8A  C7  
CONECT      C7     3 N8   C6   H7  
CONECT      C6     3 C7   N5   C9  
CONECT      N5     2 C4A  C6  
CONECT      C9     4 C6   O9   C10  H9  
CONECT      O9     2 C9   HO9 
CONECT      C10    4 C9   O10  C11  H10 
CONECT      O10    2 C10  HO1 
CONECT      C11    4 C10  H111 H112 H113
CONECT      HN21   1 N2  
CONECT      HN22   1 N2  
CONECT      H3     1 N3  
CONECT      H7     1 C7  
CONECT      H9     1 C9  
CONECT      HO9    1 O9  
CONECT      H10    1 C10 
CONECT      HO1    1 O10 
CONECT      H111   1 C11 
CONECT      H112   1 C11 
CONECT      H113   1 C11 
END   
HET    BIO             28
HETNAM     BIO BIOPTERIN
FORMUL      BIO    C9 H11 N5 O3

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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