[gmx-users] Unknown bond_atomtype CG2O2

Steven Neumann s.neumann08 at gmail.com
Thu Feb 7 11:16:34 CET 2013


Dear Gmx users,

I know this subject has been discussed but I still did not find the answer.

I have topology of my molecule:

ligand.rtp

[ GUY ] ; CGenFF output = RESI aR_citri 0.000 ! param penalty= 46.200
; charge penalty= 28.481
 [ atoms ]
C1         CG301      0.125      0
C2         CG321      -0.197     1
C3         CG321      -0.197     2
C4         CG2O2      0.848      3
O5         OG311      -0.642     4
C6         CG2O2      0.768      5
C7         CG2O2      0.768      6
O8         OG311      -0.642     7
O9         OG2D1      -0.538     8
O10        OG311      -0.632     9
O11        OG2D1      -0.549     10
O12        OG311      -0.632     11
O13        OG2D1      -0.549     12
H14        HGA2       0.090      13
H15        HGA2       0.090      14
H16        HGA2       0.090      15
H17        HGA2       0.090      16
H18        HGP1       0.419      17
H19        HGP1       0.430      18
H20        HGP1       0.430      19
H21        HGP1       0.430      20
[ bonds ]
H19        O8
O8         C4
C4         O9
C4         C1
H17        C3
H14        C2
H20        O10
O11        C6
O10        C6
C6         C2
C3         C7
C3         C1
C3         H16
O12        H21
O12        C7
C2         C1
C2         H15
C7         O13
C1         O5
O5         H18
[ impropers ]
C4         C1         O9         O8
C6         C2         O11        O10
C7         C3         O13        O12

Which is already in my working directory ff.

I added to ffbonded.itp

[ bondtypes ]
; i	j	func	b0	kb
CG2O2      CG301      1          0.1522     167360
CG2O2      CG321      1          0.1522     167360
CG2O2      OG2D1      1          0.122      627600
CG2O2      OG311      1          0.14       192464
CG301      CG321      1          0.1538     186188
CG301      OG311      1          0.142      358150.4
CG321      HGA2       1          0.1111     258571.2
OG311      HGP1       1          0.096      456056
[ angletypes ]
; i	j	k	func	th0	cth	ub0	cub
CG301      CG2O2      OG2D1      5          125.00     585.76
0.2442     16736
CG301      CG2O2      OG311      5          110.50     460.24     0
      0
CG321      CG2O2      OG2D1      5          125.00     585.76
0.2442     16736
CG321      CG2O2      OG311      5          110.50     460.24     0
      0
OG2D1      CG2O2      OG311      5          123.00     418.4
0.2262     175728
CG2O2      CG301      CG321      5          108.00     435.136    0
      0
CG2O2      CG301      OG311      5          122.50     937.216    0
      0
CG321      CG301      CG321      5          113.50     488.2728
0.2561     9338.688
CG321      CG301      OG311      5          110.10     633.4576   0
      0
CG2O2      CG321      CG301      5          108.00     435.136    0
      0
CG2O2      CG321      HGA2       5          109.50     276.144
0.2163     25104
CG301      CG321      HGA2       5          110.10     221.752
0.2179     18853.104
HGA2       CG321      HGA2       5          109.00     297.064
0.1802     4518.72
CG2O2      OG311      HGP1       5          115.00     460.24     0
      0
CG301      OG311      HGP1       5          106.00     418.4      0
      0
[ dihedraltypes ]
; i	j	k	l	func	phi0	cp	mult
OG2D1      CG2O2      CG301      CG321      9          180.00
0.2092     6
OG2D1      CG2O2      CG301      OG311      9          0.00       0
      2
OG311      CG2O2      CG301      CG321      9          180.00
0.2092     6
OG311      CG2O2      CG301      OG311      9          180.00     0
      6
OG2D1      CG2O2      CG321      CG301      9          180.00     0
      6
OG2D1      CG2O2      CG321      HGA2       9          180.00     0
      6
OG311      CG2O2      CG321      CG301      9          180.00     0
      6
OG311      CG2O2      CG321      HGA2       9          180.00     0
      6
CG301      CG2O2      OG311      HGP1       9          180.00
8.5772     2
CG321      CG2O2      OG311      HGP1       9          180.00
8.5772     2
OG2D1      CG2O2      OG311      HGP1       9          180.00
8.5772     2
CG2O2      CG301      CG321      CG2O2      9          0.00
0.8368     3
CG2O2      CG301      CG321      HGA2       9          0.00
0.8368     3
CG321      CG301      CG321      CG2O2      9          180.00
0.87864    1
CG321      CG301      CG321      CG2O2      9          0.00
1.63176    2
CG321      CG301      CG321      CG2O2      9          180.00
1.4644     3
CG321      CG301      CG321      CG2O2      9          0.00
0.46024    4
CG321      CG301      CG321      CG2O2      9          180.00
0.37656    6
CG321      CG301      CG321      HGA2       9          0.00
0.81588    3
OG311      CG301      CG321      CG2O2      9          0.00
0.8368     3
OG311      CG301      CG321      HGA2       9          0.00
0.66944    3
CG2O2      CG301      OG311      HGP1       9          0.00
0.92048    1
CG2O2      CG301      OG311      HGP1       9          180.00
0.96232    2
CG2O2      CG301      OG311      HGP1       9          0.00
1.75728    3
CG321      CG301      OG311      HGP1       9          0.00
4.72792    1
CG321      CG301      OG311      HGP1       9          0.00
0.58576    2
CG321      CG301      OG311      HGP1       9          0.00
1.00416    3
[ dihedraltypes ]
; i	j	k	l	func	q0	cp
CG2O2      CG301      OG2D1      OG311      2          0.00       543.92
CG2O2      CG321      OG2D1      OG311      2          0.00       543.92

and all the atomtypes are in my atomtypes.atp:

CG2O2	12.01100
CG301	12.01100
...


I run pdb2gmx producing the topology.

But when I try grompp:

Fatal error:
Unknown bond_atomtype CG2O2


Can you hel please?

Steven



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