[gmx-users] sub: topology file error

kalai sivam kalaiphysics.buc at gmail.com
Tue Jul 26 13:31:36 CEST 2016


dear gromacs user,

*i am a  gromacs beginner. I have used OPLS-AA force field for
protein-ligand interaction.*

*I have created topology for ligand.. During energy minimisation
step, error occur.*

pls......can you help me... what the basic parameters must to do
topology..??


topology for my ligand:


*HETATM    1    N CME J 111      35.056   8.389 -65.732  1.00
12.85           N  *


*HETATM    2  NH1 CME J 111      35.273   7.556 -66.261  1.00
12.85           H  *


* HETATM    3  NH2 CME J 111      34.432   8.154 -64.974  1.00
12.85           H  *

*HETATM    4   CA CME J 111      34.408   9.378 -66.615  1.00
12.72           C *

*HETATM    5  HA1 CME J 111      34.398  10.314 -66.056  1.00
12.72           H  *

*HETATM    6    C CME J 111      33.008   8.939 -66.964  1.00
11.45           C *


*HETATM    7 HH11 CME J 111      32.489   8.990 -66.007  1.00
11.45           H *


* HETATM    8 HH12 CME J 111      32.663   9.596 -67.762  1.00
11.45           H *

*HETATM    9   O1 CME J 111      32.792   7.791 -67.335  1.00
11.90           O *

*HETATM   10   H1 CME J 111      32.660   7.226 -66.570  1.00
11.90           H  *

*HETATM   11   CB CME J 111      35.171   9.597 -67.925  1.00
13.37           C  *

*HETATM   12  HB1 CME J 111      35.062   8.718 -68.561  1.00
13.37           H *

*HETATM   13  HB2 CME J 111      36.226   9.759 -67.706  1.00
13.37           H *

*HETATM   14   SG CME J 111      34.519  11.018 -68.763  1.00
15.40           S   *

*HETATM   15   SD CME J 111      35.658  11.048 -70.464  1.00
22.64           S *

*HETATM   16   CE CME J 111      34.703  10.137 -71.629  1.00
22.85           C *

*HETATM   17  HE1 CME J 111      34.910  10.506 -72.634  1.00
22.85           H *

*HETATM   18  HE2 CME J 111      33.644  10.263 -71.402  1.00
22.85           H *

*HETATM   19   CZ CME J 111      35.060   8.659 -71.549  1.00
25.41           C *


*HETATM   20  HZ1 CME J 111      36.050   8.540 -71.108  1.00
25.41           H *



*  HETATM   21  HZ2 CME J 111      35.072   8.217 -72.546  1.00
25.41           H  *



* HETATM   22    O CME J 111      34.078   8.011 -70.728  1.00
29.66           O *





*  HETATM   23    H CME J 111      33.908   8.546 -69.949  1.00
29.66           H      *

*These are errors:*

 NOTE 1 [file em_real.mdp, line 20]:

em_real.mdp did not specify a value for the .mdp option "cutoff-scheme".

Probably it was first intended for use with GROMACS before 4.6. In 4.6,

the Verlet scheme was introduced, but the group scheme was still the

default. The default is now the Verlet scheme, so you will observe

different behaviour.


Ignoring obsolete mdp entry 'title'


Back Off! I just backed up mdout.mdp to ./#mdout.mdp.1#


NOTE 2 [file em_real.mdp]:

With Verlet lists the optimal nstlist is >= 10, with GPUs >= 20. Note

that with the Verlet scheme, nstlist has no effect on the accuracy of

your simulation.


Setting the LD random seed to 4229912197

Generated 330891 of the 330891 non-bonded parameter combinations

Generating 1-4 interactions: fudge = 0.5

Generated 330891 of the 330891 1-4 parameter combinations


ERROR 1 [file topol.top, line 64]:

No default Bond types



ERROR 2 [file topol.top, line 65]:

No default Bond types



ERROR 3 [file topol.top, line 69]:

No default Bond types



ERROR 4 [file topol.top, line 70]:

No default Bond types



ERROR 5 [file topol.top, line 76]:

No default Bond types



ERROR 6 [file topol.top, line 77]:

No default Bond types



ERROR 7 [file topol.top, line 141]:

No default Angle types



ERROR 8 [file topol.top, line 143]:

No default Angle types



ERROR 9 [file topol.top, line 144]:

No default Angle types



ERROR 10 [file topol.top, line 145]:

No default Angle types



ERROR 11 [file topol.top, line 152]:

No default Angle types



ERROR 12 [file topol.top, line 153]:

No default Angle types



ERROR 13 [file topol.top, line 154]:

No default Angle types



ERROR 14 [file topol.top, line 155]:

No default Angle types



ERROR 15 [file topol.top, line 156]:

No default Angle types



ERROR 16 [file topol.top, line 162]:

No default Angle types



ERROR 17 [file topol.top, line 164]:

No default Angle types



ERROR 18 [file topol.top, line 165]:

No default Angle types



ERROR 19 [file topol.top, line 166]:

No default Angle types


More information about the gromacs.org_gmx-users mailing list