Juliana Angeiras wrote:
Hi Justin,
Sorry if I am slow to understand these things, but I really want to use gromacs for simulate my system: butanol-water mixture in several concentrations, using tip3p for water and include the parameters for butanol and for water-butanol intermolecular interactions. Everything I tried until now didn't work. First, I did what you suggest: I have changed the order for [ nonbond_params ] putting it before the directive [ moleculetype ], but the answer of grommp was that HW (tip3p) atom is not recognized. Then I have changed the position of the "includes" to

You can't define a molecule before you define the parameters that are to be applied to it. The force field level must take precedence over the molecule level.

top of the archive, but the new message of the grompp was that invalid order for [ defaults ], that seems obviously for me because is already exist in the include archives. Then, I have removed the directive defaults, but the new message was that the atomtype order is invalid. My question is what is the correct order for these things.

The required order of directives is in Table 5.4 (and then 5.5 and 5.6) of the manual. In your case, you need to have something along the lines of:

#include "oplsaa.ff/forcefield.itp" ; [ defaults ] is here

; After this are your custom entries - note that spelling matters!
; Your previous messages used e.g. "bondtype" and "angletype"
; which are not valid identifiers.
[ atomtypes ]
...
[ bondtypes ]
...
[ angletypes ]
...
[ nonbond_params ]
...

#include "oplsaa.ff/tip3p.itp"

After that list the parameters for n-butanol and finish with [ system ] and [ molecules ] directives to describe the content of the system.

-Justin

Thanks for your help,
Juliana Angeiras B. da Silva.
Laboratório de Química Teórica e Computacional
Departamento de Química Fundamental
Universidade Federal de Pernambuco
Recife, PE - Brasil.
The last archive.top: ; Include forcefield parameters #include "oplsaa.ff/forcefield.itp" ; Include forcefield parameters #include "oplsaa.ff/tip3p.itp" ; [ defaults ]
; nbfunc        comb-rule       gen-pairs       fudgeLJ fudgeQQ
;   1     3    yes    0.5    0.5
[ atomtypes ]
; name   at.num   mass   charge   ptype   V(c6)   W(c12)
   Hb  1     1.0080     0.38   A   0.4149611E-07  0.9737356E-04
   O   8    15.9994    -0.66   A   0.9722461E-06  0.1247853E-02
   C   6    12.0110     0.40   A   0.4895634E-05  0.2791672E-02
C 6 12.0110 -0.22 A 0.4895634E-05 0.2791672E-02 C 6 12.0110 -0.33 A 0.4895634E-05 0.2791672E-02
   H   1     1.0080    -0.06   A   0.4415162E-06  0.5131711E-03
   H   1     1.0080     0.11   A   0.4415162E-06  0.5131711E-03
[ bondtype ] ; ai aj funct c0 c1 Hb O 1 0.10900 462750.4 O C 1 0.14300 376560.0 C C 1 0.15300 265265.6 H C 1 0.10800 284512.0 [ angletype ] ; ai aj ak func c0 c1 C O Hb 1 108.000 460.240 C C O 1 108.000 418.400 C C C 1 112.000 488.273 H C H 1 109.470 292.000 [ nonbond_params ] ; i j func V(c6) W(c12) H H 1 0.4149611E-07 0.9737356E-04
  H   HW  1      0.4149611E-07  0.9737356E-04
  H   C   1      0.4415162E-06  0.5131711E-03
  H   O   1      0.1927397E-06  0.3416812E-03
  H   OW  1      0.1927397E-06  0.3416812E-03
  H   Hb  1      0.4149611E-07  0.9737356E-04
  HW  HW  1      0.0000000E+00  0.0000000E+00
  HW  C   1      0.4415162E-06  0.5131711E-03
  HW  O   1      0.0000000E+00  0.0000000E+00
  HW  OW  1      0.0000000E+00  0.0000000E+00
  HW  Hb  1      0.4149611E-07  0.9737356E-04
  C   C   1      0.4895634E-05  0.2791672E-02
  C   O   1      0.2159724E-05  0.1866537E-02
  C   OW  1      0.2159724E-05  0.1866537E-02
  C   Hb  1      0.4415162E-06  0.5131711E-03
  O   O   1      0.9722461E-06  0.1247853E-02
  O   OW  1      0.1562282E-05  0.1785000E-02
  O   Hb  1      0.0000000E+00  0.0000000E+00
  OW  OW  1      0.2510400E-05  0.2552000E-02
  OW  Hb  1      0.0000000E+00  0.0000000E+00
  Hb  Hb  1      0.4149611E-07  0.9737356E-04
[ moleculetype ] ; name nrexcl BuOH 3 [ atoms ] ; nr type resnr residu atom cgnr charge mass 1 Hb 1 BuOH HO 1 0.38 1.0080 2 O 1 BuOH OH 1 -0.66 15.9994 3 C 1 BuOH CA 1 0.40 12.0110 4 C 1 BuOH CB 1 -0.22 12.0110 5 C 1 BuOH CC 1 -0.22 12.0110 6 C 1 BuOH CD 1 -0.33 12.0110 7 H 1 BuOH HA 1 -0.06 1.0080 8 H 1 BuOH Hb 1 -0.06 1.0080 9 H 1 BuOH HC 1 0.11 1.0080 10 H 1 BuOH HD 1 0.11 1.0080 11 H 1 BuOH HE 1 0.11 1.0080 12 H 1 BuOH HF 1 0.11 1.0080 13 H 1 BuOH HG 1 0.11 1.0080 14 H 1 BuOH HF 1 0.11 1.0080 15 H 1 BuOH HG 1 0.11 1.0080 [ dihedrals ] 1 2 3 4 3 0.41840 1.25520 0.00000 -1.67360 0.00000 0.00000
  2  3  4  5  3    2.87441   0.58158   2.09200  -5.54799   0.00000   0.00000
  3  4  5  6  3    2.92880  -1.46440   0.20920  -1.67360   0.00000   0.00000
[ system ]
 ; Name
 BuOH in water
[ molecules ]
 ; Compound        #mols
 BuOH               343
 SOL                185

------------------------------------------------------------------------
*De:* Justin A. Lemkul <[email protected]>
*Para:* Discussion list for GROMACS users <[email protected]>
*Enviadas:* Quarta-feira, 13 de Julho de 2011 12:10:03
*Assunto:* Re: Res: [gmx-users] Topology for nBuOH



Juliana Angeiras wrote:
 > Hi,
> really the problem was with the order, but now i have another problem (below). I have already read the chapter 5, but i didn't fix my problem. I would like to use an archive .itp for the butanol, although i use the tip3p for water in the system (mixture water-butanol), I want use different parameters for nonbonded interactions between water-butanol (because were parametrized specifically for these interactions). How can I do that? My atual archive .top is more below. > Again, your directives are out of order. The [nonbond_params] are part of the top-level force field definition and thus must come before the molecule definitions.

-Justin

 > Archive .top:
 >  [ defaults ]
 > ; nbfunc        comb-rule      gen-pairs      fudgeLJ fudgeQQ
 >    1    3    yes    0.5    0.5
 >  [ atomtypes ]
 > ; name  at.num  mass  charge  ptype  V(c6)  W(c12)
 >    Hb  1    1.0080    0.38  A  0.4149611E-07  0.9737356E-04
 >    O  8    15.9994    -0.66  A  0.9722461E-06  0.1247853E-02
 >    C  6    12.0110    0.40  A  0.4895634E-05  0.2791672E-02
> C 6 12.0110 -0.22 A 0.4895634E-05 0.2791672E-02 C 6 12.0110 -0.33 A 0.4895634E-05 0.2791672E-02
 >    H  1    1.0080    -0.06  A  0.4415162E-06  0.5131711E-03
 >    H  1    1.0080    0.11  A  0.4415162E-06  0.5131711E-03
> [ bondtype ] ; ai aj funct c0 c1 Hb O 1 0.10900 462750.4 O C 1 0.14300 376560.0 C C 1 0.15300 265265.6 H C 1 0.10800 284512.0 > [ angletype ] ; ai aj ak func c0 c1 C O Hb 1 108.000 460.240 C C O 1 108.000 418.400 C C C 1 112.000 488.273 H C H 1 109.470 292.000 > [ moleculetype ] ; name nrexcl BuOH 3 [ atoms ] ; nr type resnr residu atom cgnr charge mass > 1 Hb 1 BuOH HO 1 0.38 1.0080 2 O 1 BuOH OH 1 -0.66 15.9994 3 C 1 BuOH CA 1 0.40 12.0110 4 C 1 BuOH CB 1 -0.22 12.0110 5 C 1 BuOH CC 1 -0.22 12.0110 6 C 1 BuOH CD 1 -0.33 12.0110 7 H 1 BuOH HA 1 -0.06 1.0080 8 H 1 BuOH Hb 1 -0.06 1.0080 9 H 1 BuOH HC 1 0.11 1.0080 10 H 1 BuOH HD 1 0.11 1.0080 11 H 1 BuOH HE 1 0.11 1.0080 12 H 1 BuOH HF 1 0.11 1.0080 13 H 1 BuOH HG 1 0.11 1.0080 14 H 1 BuOH HF 1 0.11 1.0080 15 H 1 BuOH HG 1 0.11 1.0080 [ dihedrals ] 1 2 3 4 3 0.41840 1.25520 0.00000 -1.67360 0.00000 0.00000
 >  2  3  4  5  3    2.87441  0.58158  2.09200  -5.54799  0.00000  0.00000
 >  3  4  5  6  3    2.92880  -1.46440  0.20920  -1.67360  0.00000  0.00000
> ; Include forcefield parameters ;#include "oplsaa.ff/forcefield.itp" ; Include forcefield parameters #include "oplsaa.ff/tip3p.itp" [ nonbond_params ]
 > ; i  j  func  V(c6)  W(c12)
 >  H  H  1      0.4149611E-07  0.9737356E-04
 >  H  HW  1      0.4149611E-07  0.9737356E-04
 >  H  C  1      0.4415162E-06  0.5131711E-03
 >  H  O  1      0.1927397E-06  0.3416812E-03
 >  H  OW  1      0.1927397E-06  0.3416812E-03
 >  H  Hb  1      0.4149611E-07  0.9737356E-04
 >  HW  HW  1      0.0000000E+00  0.0000000E+00
 >  HW  C  1      0.4415162E-06  0.5131711E-03
 >  HW  O  1      0.0000000E+00  0.0000000E+00
 >  HW  OW  1      0.0000000E+00  0.0000000E+00
 >  HW  Hb  1      0.4149611E-07  0.9737356E-04
 >  C  C  1      0.4895634E-05  0.2791672E-02
 >  C  O  1      0.2159724E-05  0.1866537E-02
 >  C  OW  1      0.2159724E-05  0.1866537E-02
 >  C  Hb  1      0.4415162E-06  0.5131711E-03
 >  O  O  1      0.9722461E-06  0.1247853E-02
 >  O  OW  1      0.1562282E-05  0.1785000E-02
 >  O  Hb  1      0.0000000E+00  0.0000000E+00
 >  OW  OW  1      0.2510400E-05  0.2552000E-02
 >  OW  Hb  1      0.0000000E+00  0.0000000E+00
 >  Hb  Hb  1      0.4149611E-07  0.9737356E-04
 >  [ system ]
 >  ; Name
 >  BuOH in water
 >  [ molecules ]
 >  ; Compound        #mols
 >  BuOH              343
 >  SOL                185
 >  Error with grompp:
 >  WARNING 1 [file BuOHaa.top, line 27]:
 >  Overriding atomtype C
 >
 > WARNING 2 [file BuOHaa.top, line 28]:
 >  Overriding atomtype C
 >
 > WARNING 3 [file BuOHaa.top, line 30]:
 >  Overriding atomtype H
 >
 > ERROR 1 [file BuOHaa.top, line 32]:
 >  Invalid directive bondtype
 >
 > WARNING 4 [file BuOHaa.top, line 34]:
 >  Too few parameters on line (source file toppush.c, line 246)
 >
 > WARNING 5 [file BuOHaa.top, line 35]:
 >  Too few parameters on line (source file toppush.c, line 246)
 >
 > WARNING 6 [file BuOHaa.top, line 36]:
 >  Too few parameters on line (source file toppush.c, line 246)
 >
 > WARNING 7 [file BuOHaa.top, line 37]:
 >  Too few parameters on line (source file toppush.c, line 246)
 >
 > ERROR 2 [file BuOHaa.top, line 39]:
 >  Invalid directive angletype
 >
 > WARNING 8 [file BuOHaa.top, line 41]:
 >  Too few parameters on line (source file toppush.c, line 315)
 >
 > WARNING 9 [file BuOHaa.top, line 42]:
 >  Too few parameters on line (source file toppush.c, line 315)
 >
 > WARNING 10 [file BuOHaa.top, line 43]:
 >  Too few parameters on line (source file toppush.c, line 315)
 >
 > WARNING 11 [file BuOHaa.top, line 44]:
 >  Too few parameters on line (source file toppush.c, line 315)
 > Generated 10 of the 10 non-bonded parameter combinations
 > Generating 1-4 interactions: fudge = 0.5
 > Generated 10 of the 10 1-4 parameter combinations
 > -------------------------------------------------------
 > Program grompp, VERSION 4.5.4
 > Source code file: toppush.c, line: 1166
 > Fatal error:
 > Atomtype opls_111 not found
 > Thanks,
 >  Juliana Angeiras B. da Silva.
 > Laboratório de Química Teórica e Computacional
 > Departamento de Química Fundamental
 > Universidade Federal de Pernambuco
 > Recife, PE - Brasil.
 >
 > ------------------------------------------------------------------------
 > *De:* Justin A. Lemkul <[email protected] <mailto:[email protected]>>
> *Para:* Discussion list for GROMACS users <[email protected] <mailto:[email protected]>>
 > *Enviadas:* Terça-feira, 12 de Julho de 2011 12:42:49
 > *Assunto:* Re: [gmx-users] Topology for nBuOH
 >
 >
 >
 > Juliana Angeiras wrote:
 >  > Hi,
> > I'm trying to include parameters of n-butanol in the topology file (below) (i'm not using opls or other force field for butanol), but when i run the grompp program, I obtain the following message:
 >  >  Fatal error:
 >  > Atomtype Hb not found
 >  >  How can I fix this problem?
 >  >
> Your directives are out of order. If you define new atomtypes, etc. they have to be defined before they can be used. See Chapter 5 of the manual.
 >
 > -Justin
 >
 >  > Thanks
 >  >  Topology file:
> > ; Include forcefield parameters #include "oplsaa.ff/forcefield.itp" ; Include forcefield parameters #include "oplsaa.ff/tip5p.itp" [ moleculetype ] > > ; name nrexcl BuOH 3 [ atoms ] ; nr type resnr residu atom cgnr charge mass
 >  >      1      Hb  1  BuOH    HO    1      0.38      1.0080
 >  >      2      O  1  BuOH    OH    1      -0.66      15.9994
 >  >      3      C  1  BuOH    CA    1      0.40      12.0110
 >  >      4      C  1  BuOH    CB    1      -0.22      12.0110
 >  >      5      C  1  BuOH    CC    1      -0.22      12.0110
 >  >      6      C  1  BuOH    CD    1      -0.33      12.0110
 >  >      7      H  1  BuOH    HA    1      -0.06      1.0080
 >  >      8      H  1  BuOH    HB    1      -0.06      1.0080
 >  >      9      H  1  BuOH    HC    1      0.11      1.0080
 >  >      10    H  1  BuOH    HD    1      0.11      1.0080
 >  >      11    H  1  BuOH    HE    1      0.11      1.0080
 >  >      12    H  1  BuOH    HF    1      0.11      1.0080
 >  >      13    H  1  BuOH    HG    1      0.11      1.0080
 >  >      14    H  1  BuOH    HF    1      0.11      1.0080
 >  >      15    H  1  BuOH    HG    1      0.11      1.0080
 >  >  [ atomtypes ]
 >  > ; name  at.num  mass  charge  ptype  V(c6)  W(c12)
 >  >    Hb  1    1.0080    0.38  A  0.4149611E-07  0.9737356E-04
 >  >    O  8    15.9994    -0.66  A  0.9722461E-06  0.1247853E-02
 >  >    C  6    12.0110    0.40  A  0.4895634E-05  0.2791672E-02
> > C 6 12.0110 -0.22 A 0.4895634E-05 0.2791672E-02 C 6 12.0110 -0.33 A 0.4895634E-05 0.2791672E-02
 >  >    H  1    1.0080    -0.06  A  0.4415162E-06  0.5131711E-03
 >  >    H  1    1.0080    0.11  A  0.4415162E-06  0.5131711E-03
> > [ bondtype ] ; ai aj funct c0 c1 HB O 1 0.10900 462750.4 O C 1 0.14300 376560.0 C C 1 0.15300 265265.6 H C 1 0.10800 284512.0 > > [ angletype ] ; ai aj ak func c0 c1 C O HB 1 108.000 460.240 C C O 1 108.000 418.400 C C C 1 112.000 488.273 H C H 1 109.470 292.000 > > [ dihedrals ] 1 2 3 4 3 0.41840 1.25520 0.00000 -1.67360 0.00000 0.00000 > > 2 3 4 5 3 2.87441 0.58158 2.09200 -5.54799 0.00000 0.00000 > > 3 4 5 6 3 2.92880 -1.46440 0.20920 -1.67360 0.00000 0.00000
 >  >  [ nonbond_params ]
 >  > ; i  j  func  V(c6)  W(c12)
 >  >  H  H  1      0.4149611E-07  0.9737356E-04
 >  >  H  HW  1      0.4149611E-07  0.9737356E-04
 >  >  H  C  1      0.4415162E-06  0.5131711E-03
 >  >  H  O  1      0.1927397E-06  0.3416812E-03
 >  >  H  OW  1      0.1927397E-06  0.3416812E-03
 >  >  H  Hb  1      0.4149611E-07  0.9737356E-04
 >  >  HW  HW  1      0.0000000E+00  0.0000000E+00
 >  >  HW  C  1      0.4415162E-06  0.5131711E-03
 >  >  HW  O  1      0.0000000E+00  0.0000000E+00
 >  >  HW  OW  1      0.0000000E+00  0.0000000E+00
 >  >  HW  Hb  1      0.4149611E-07  0.9737356E-04
 >  >  C  C  1      0.4895634E-05  0.2791672E-02
 >  >  C  O  1      0.2159724E-05  0.1866537E-02
 >  >  C  OW  1      0.2159724E-05  0.1866537E-02
 >  >  C  Hb  1      0.4415162E-06  0.5131711E-03
 >  >  O  O  1      0.9722461E-06  0.1247853E-02
 >  >  O  OW  1      0.1562282E-05  0.1785000E-02
 >  >  O  Hb  1      0.0000000E+00  0.0000000E+00
 >  >  OW  OW  1      0.2510400E-05  0.2552000E-02
 >  >  OW  Hb  1      0.0000000E+00  0.0000000E+00
 >  >  Hb  Hb  1      0.4149611E-07  0.9737356E-04
 >  >  [ system ]
 >  >  ; Name
 >  >  BuOH in water
 >  >  [ molecules ]
 >  >  ; Compound        #mols
 >  >  BuOH              343
 >  >  SOL                185
> > > -- ========================================
 >
 > Justin A. Lemkul
 > Ph.D. Candidate
 > ICTAS Doctoral Scholar
 > MILES-IGERT Trainee
 > Department of Biochemistry
 > Virginia Tech
 > Blacksburg, VA
 > jalemkul[at]vt.edu | (540) 231-9080
 > http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
 >
 > ========================================
> -- gmx-users mailing list [email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]>>
 > http://lists.gromacs.org/mailman/listinfo/gmx-users
> Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! > Please don't post (un)subscribe requests to the list. Use the www interface or send it to [email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]>>.
 > Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

-- ========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

========================================
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--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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