[gmx-users] reg pdb2gmx

[vidhya sankar]

Dear justin , Thanks for your valuable previous reply

Also When i run the pdb2gmx tool  i got the following error 

WARNING: atom O1 is missing in residue PO4 147 in the pdb file
WARNING: atom O2 is missing in residue PO4 147 in the pdb file
WARNING: atom O3 is missing in residue PO4 147 in the pdb file
WARNING: atom O4 is missing in residue PO4 147 in the pdb file

But my X-ray pdb contains only one united atom as follows 
HETATM 4432  P   PO4 B 147       5.931 -21.573   3.319  1.00 32.97           P  
so it shows errror .
can i use the -missing topology otherwise
 Is it better to introduce O atoms in My PDB files ? .if it need How could i introduce new atom or molecule  in My PDB files


                 
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