/usr/share/gromacs/top/encadv.ff/aminoacids.c.tdb is in gromacs-data 4.6.5-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | [ None ]
[ COO- ]
[ replace ]
C C Abis 12.011 0.64
O O1 Obis 15.9994 -0.42
OXT O2 Obis 15.9994 -0.42
[ add ]
2 8 O C CA N
Obis 15.9994 -0.92
[ dihedrals ]
N CA C O2
[ impropers ]
CA O2 C O1 improper_X_X_A_X
N C CA CB improper_X_X_C_X
[ COOH ]
[ replace ]
C C Aprime 12.011 0.38
O O OH 15.9994 -0.38
OXT OT O 15.9994 -0.433
[ add ]
1 2 OT C CA N
O 15.9994 -0.433
1 2 HO O C CA
HO 1.008 0.433
[ dihedrals ]
N CA C O
[ impropers ]
OT CA C O improper_X_X_A_X
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