Dear all,
   I am currently trying to develop GAFF for cefotaxime using “paramfits”.
   There are more than 30 dihedral angles need to be optimized, so I decided
   optimized the dihedral angle parameters of one subgroup first(10 dihedral
   angles).  After  finishing  this part, I want to keep those  optimized
   parameters and then optimize another subgroup. So I change the parameters in
   the frcmod file to generate prmtop file, but there are errors saying that
   “ Error:  ** No torsion terms for  cc-cd-cf-n2, Error:  ** No torsion terms
   for  cc-ss-cc-cd”. However, there parameters do exit in the frcmod file.
   Could anyone help with this?  I have attached the original  and modified
   frcmod file, as well as the mol2 file.
   Thanks in advance!
   Best regards,
   Tingting
   Sent from [1]Mail for Windows 10
References
   1. 
https://go.microsoft.com/fwlink/?LinkId=550986
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Received on Sun Mar 22 2020 - 15:30:02 PDT