Dear all,

I have a problem in generating XPLOR topology and parameter table for a small 
molecule, 3'-5' cGAMP (cyclic guanine-adenosine monophosphate).


I started out with crystal structure that contains this molecule, PDB ID: 5cfm. 
(It has residue name of "4BW"). I took this molecule and run xplo2d, and I got 
the topology and parameter tables (attached). But I noticed that these tables 
do not include any proton, and I need the proton since I will be using them to 
compute an NMR structure.


So I would like to ask whether anyone know any way to generate the proton 
parameters? Thank you very much.


Best regards,

Fernaldo R. Winnerdy

Attachment: 4bw.par
Description: 4bw.par

Attachment: 4bw.top
Description: 4bw.top

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