Structure based on 1b25

Ideal structure
Name: tungstopterin
Formula: C21 H25 Mg N10 O13 P2 S4 W
Weight: 1023.835
SMILES: "COc1nc(N)nc2N[CH]3O[CH]4CO[P](O)(=O)O[Mg]O[P](O)(=O)OC[CH]5O[CH]6NC7=C(N[CH]6C8=C5S[W]9(O)(SC4=C(S9)[CH]3Nc12)S8)C(=O)NC(=N7)N"
Spacial conformation based on PDB 1b25
RESIDUE   PTT     77
CONECT      C1     4 C2   O4P  H1   HC2 
CONECT      C2     4 C1   C3   O2   H2  
CONECT      C3     3 C2   S3   C4  
CONECT      S3     2 C3   W1  
CONECT      C4     3 C3   S4   C5  
CONECT      S4     2 C4   W1  
CONECT      C5     4 C4   N6   C14  H5  
CONECT      N6     3 C5   C7   HN6 
CONECT      C7     3 N6   C8   C12 
CONECT      C8     3 C7   O8   N9  
CONECT      O8     2 C8   CA1 
CONECT      N9     2 C8   C10 
CONECT      C10    3 N9   N10  N11 
CONECT      N10    3 C10  H101 H102
CONECT      N11    2 C10  C12 
CONECT      C12    3 C7   N11  N13 
CONECT      N13    3 C12  C14  H13 
CONECT      C14    4 C5   N13  O2   H14 
CONECT      O2     2 C2   C14 
CONECT      C21    4 C22  O8P  H21  HC1 
CONECT      C22    4 C21  C23  O22  H22 
CONECT      C23    3 C22  S23  C24 
CONECT      S23    2 W1   C23 
CONECT      C24    3 C23  S24  C25 
CONECT      S24    2 W1   C24 
CONECT      C25    4 C24  N26  C34  H25 
CONECT      N26    3 C25  C27  H26 
CONECT      C27    3 N26  C28  C32 
CONECT      C28    3 C27  O28  N29 
CONECT      O28    1 C28 
CONECT      N29    3 C28  C30  H29 
CONECT      C30    3 N29  N30  N31 
CONECT      N30    3 C30  H301 H302
CONECT      N31    2 C30  C32 
CONECT      C32    3 C27  N31  N33 
CONECT      N33    3 C32  C34  H33 
CONECT      C34    4 C25  N33  O22  H34 
CONECT      O22    2 C22  C34 
CONECT      P1     4 O1P  O2P  O3P  O4P 
CONECT      P2     4 O5P  O6P  O7P  O8P 
CONECT      MG1    2 O1P  O5P 
CONECT      CA1    4 O8   HA11 HA12 HA13
CONECT      O1P    2 P1   MG1 
CONECT      O2P    1 P1  
CONECT      O3P    2 P1   HOP3
CONECT      O4P    2 C1   P1  
CONECT      O5P    2 P2   MG1 
CONECT      O6P    1 P2  
CONECT      O7P    2 P2   HOP7
CONECT      O8P    2 C21  P2  
CONECT      OX1    2 W1   HX1 
CONECT      H1     1 C1  
CONECT      H2     1 C2  
CONECT      H5     1 C5  
CONECT      HN6    1 N6  
CONECT      H101   1 N10 
CONECT      H102   1 N10 
CONECT      H13    1 N13 
CONECT      H14    1 C14 
CONECT      H21    1 C21 
CONECT      H22    1 C22 
CONECT      H25    1 C25 
CONECT      H26    1 N26 
CONECT      H29    1 N29 
CONECT      H301   1 N30 
CONECT      H302   1 N30 
CONECT      H33    1 N33 
CONECT      H34    1 C34 
CONECT      HA11   1 CA1 
CONECT      HA12   1 CA1 
CONECT      HA13   1 CA1 
CONECT      HOP3   1 O3P 
CONECT      HOP7   1 O7P 
CONECT      HX1    1 OX1 
CONECT      HC1    1 C21 
CONECT      HC2    1 C1  
END   
HET    PTT             77
HETNAM     PTT TUNGSTOPTERIN
FORMUL      PTT    C21 H25 Mg1 N10 O13 P2 S4 W1

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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