[gmx-users] fatal error

Justin A. Lemkul jalemkul at vt.edu
Sat Jan 22 22:07:44 CET 2011



ahmet yıldırım wrote:
> please look at the attached file
> 

I had no problem making a topology.

$ pdb2gmx -f 3MOA.pdb -ter

...
Using the Gromos43a1 force field in directory gromos43a1.ff
...
Select start terminus type for GLU-659
  0: NH3+
  1: NH2
  2: None
0
Start terminus GLU-659: NH3+
Select end terminus type for NH2-671
  0: COO-
  1: COOH
  2: None
2
End terminus NH2-671: None
Checking for duplicate atoms....
Now there are 13 residues with 139 atoms
Chain time...
...
Select start terminus type for LEU-2
  0: NH3+
  1: NH2
  2: None
0
Start terminus LEU-2: NH3+
Select end terminus type for CYS-214
  0: COO-
  1: COOH
  2: None
0
End terminus CYS-214: COO-
...
Select start terminus type for ARG-1
  0: NH3+
  1: NH2
  2: None
0
Start terminus ARG-1: NH3+
Select end terminus type for ASP-217
  0: COO-
  1: COOH
  2: None
0
End terminus ASP-217: COO-
...

-Justin

> 22 Ocak 2011 22:54 tarihinde Justin A. Lemkul <jalemkul at vt.edu 
> <mailto:jalemkul at vt.edu>> yazdı:
> 
> 
> 
>     ahmet yıldırım wrote:
> 
>         Dear Justin,
> 
>         I manually specify termini.  I choosed "None" but I have the
>         same error.
> 
>         Fatal error:
>         atom C not found in residue 13NH2 while combining tdb and rtp
> 
> 
>     Please post your .pdb file.
> 
>     -Justin
> 
> 
>         22 Ocak 2011 00:45 tarihinde Justin A. Lemkul <jalemkul at vt.edu
>         <mailto:jalemkul at vt.edu> <mailto:jalemkul at vt.edu
>         <mailto:jalemkul at vt.edu>>> yazdı:
> 
> 
> 
> 
>            ahmet yıldırım wrote:
> 
>                Dear justin,
> 
>                I looked at the pdb file. No NH2 reside contains carbon atom.
> 
>                What should I do?
> 
> 
>            In this case, you need to manually specify termini.  Choose
>         "None"
>            to allow your capping groups to be built properly.
> 
>            -Justin
> 
> 
>                22 Ocak 2011 00:18 tarihinde Justin A. Lemkul
>         <jalemkul at vt.edu <mailto:jalemkul at vt.edu>
>                <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>
>         <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>
> 
>                <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>>> yazdı:
> 
> 
> 
> 
>                   ahmet yıldırım wrote:
> 
>                       I think I need to edit the aminoacids.rtp file in
>                gromos43a1.ff
>                       folder as far as I understand from mailing list. I am
>                using 43a1
>                       forcefield. I do not understand what kind of changes
>                should I do.
> 
> 
>                   You do not need to modify the .rtp file, you need to
>         modify your
>                   coordinate file, as I said before.  The fatal error
>         indicates
>                that
>                   you have included a C atom in an NH2 residue, which is
>         just a
>                   neutral amine and contains no carbon, as should be
>         clear from the
>                   .rtp file.
> 
>                   -Justin
> 
>                       *the aminoacids.rtp file:*
> 
>                       [ ACE ]
>                        [ atoms ]
>                          CA   CH3   0.000     0
>                           C     C   0.380     1
>                           O     O  -0.380     1
>                        [ bonds ]
>                           C    CA   gb_26
>                           C     O   gb_4
>                           C    +N   gb_9
>                        [ angles ]
>                         CA     C     O    ga_30
>                         CA     C    +N    ga_18
>                          O     C    +N    ga_32
>                        [ impropers ]
>                          C    CA    +N     O    gi_1
> 
>                       [ NH2 ]
>                        [ atoms ]
>                           N    NT   -0.83    0
>                           H1    H   0.415    0
>                           H2    H   0.415   0
>                        [ bonds ]
>                            N    H1  gb_2
>                            N    H2  gb_2       -C    N   gb_8
>                        [ angles ]
>                           -O -C N  ga_32
>                           -CA -C N ga_18
>                           -C N H1  ga_22
>                           -C N H2  ga_22
>                           H1 N H2  ga_23
>                        [ dihedrals ]
>                          -CA -C N H1 gd_4
>                        [ impropers ]
>                          -C -O N -CA gi_1
>                           N  H1 H2  -C gi_1
> 
>                       [ ALA ]
>                        [ atoms ]
>                          N     N    -0.28000     0
>                          H     H     0.28000     0
>                         CA   CH1     0.00000     1
>                         CB   CH3     0.00000     1
>                          C     C       0.380     2
>                          O     O      -0.380     2
>                        [ bonds ]
>                          N     H    gb_2       N    CA    gb_20     CA  
>           C           gb_26
>                            C     O    gb_4       C    +N    gb_9      CA
>            CB
>                   gb_26          2011/1/21 Justin A. Lemkul
>         <jalemkul at vt.edu <mailto:jalemkul at vt.edu>
>                <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>
>                       <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>
>         <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>>
>                <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>
>         <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>
> 
>                       <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>
>         <mailto:jalemkul at vt.edu <mailto:jalemkul at vt.edu>>>>>
> 
> 
> 
> 
> 
>                          ahmet yıldırım wrote:
> 
>                              Dear users,
> 
>                              Gromacs 4.5.3
>                              pdb2gmx -f xxx.pdb -water spc
>                              select Force Field:9
>                              *Fatal error:*
>                              atom C not found in buiding block 13NH2 while
>                combining
>                       tdb and rtp
>                              For more information and tips for
>         troubleshooting,
>                please
>                       check
>                              the GROMACS
>                              website at
>         http://www.gromacs.org/Documentation/Errors
> 
> 
>                              How can I fixed this error?
> 
> 
>                          You have a carbon atom in a residue that should
>         only
>                contain NH2.
>                           Refer to the .rtp file for what is expected,
>         then make a
>                       suitable
>                          structure that conforms to those requirements.
> 
>                          This has been asked and answered hundreds of
>         times, so
>                please
>                       make
>                          use of the mailing list search.  You would have
>         gotten
>                your
>                       answer
>                          in minutes rather than hours.
> 
>                          -Justin
> 
> 
>                              Thanks in advance
> 
> 
>                              --         Ahmet YILDIRIM
> 
> 
>                          --     ========================================
> 
>                          Justin A. Lemkul
>                          Ph.D. Candidate
>                          ICTAS Doctoral Scholar
>                          MILES-IGERT Trainee
>                          Department of Biochemistry
>                          Virginia Tech
>                          Blacksburg, VA
>                          jalemkul[at]vt.edu <http://vt.edu>
>         <http://vt.edu> <http://vt.edu>
>                <http://vt.edu> | (540)
> 
>                       231-9080
> 
>                        
>          http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
> 
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> 
>                       --         Ahmet YILDIRIM
> 
> 
>                   --     ========================================
> 
>                   Justin A. Lemkul
>                   Ph.D. Candidate
>                   ICTAS Doctoral Scholar
>                   MILES-IGERT Trainee
>                   Department of Biochemistry
>                   Virginia Tech
>                   Blacksburg, VA
>                   jalemkul[at]vt.edu <http://vt.edu> <http://vt.edu>
>         <http://vt.edu> | (540)
>                231-9080
>                   http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
> 
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> 
>                --         Ahmet YILDIRIM
> 
> 
>            --     ========================================
> 
>            Justin A. Lemkul
>            Ph.D. Candidate
>            ICTAS Doctoral Scholar
>            MILES-IGERT Trainee
>            Department of Biochemistry
>            Virginia Tech
>            Blacksburg, VA
>            jalemkul[at]vt.edu <http://vt.edu> <http://vt.edu> | (540)
>         231-9080
>            http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
> 
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> 
>         -- 
>         Ahmet YILDIRIM
> 
> 
>     -- 
>     ========================================
> 
>     Justin A. Lemkul
>     Ph.D. Candidate
>     ICTAS Doctoral Scholar
>     MILES-IGERT Trainee
>     Department of Biochemistry
>     Virginia Tech
>     Blacksburg, VA
>     jalemkul[at]vt.edu <http://vt.edu> | (540) 231-9080
>     http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
> 
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> -- 
> Ahmet YILDIRIM

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

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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