Why do I observe slight energy differences between this GROMACS port and the AMBER package for a system containing TRP residues?
This is due to a known bug in AMBER 8.0 involving inconsistent ordering in an improper dihedral of TRP that has been reported. This is the cause of the non-zero mean dihedral energy difference for amino acids shown in the table on the port webpage, as all TRP systems have been included in these averages.
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