[gmx-users] parameterization of N atom type if ffgmx

[alexander yakovenko]

Hi all,
Do you know anything about correct parameterization of N atom type if ffgmx force field?
I work with protein - ligand complexes and found effective H-bonding of peptide N atom of protein. But N peptide atom  is not good for H-bonding in case presence pseudo double bond with CO group with previous residue in protein. 
Is this a gromacs error ?
Thank you,

Alexander Yakovenko
Institute of Molecular Biology & Genetic of NAS of Ukraine
03143
acad.Zabolotnogo str. 150
Kiev
Ukraine
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E-mail: yakovenko_a at ukr.net