[gmx-users] fatal error

ahmet yıldırım ahmedo047 at gmail.com
Sat Jan 22 21:53:52 CET 2011


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


22 Ocak 2011 00:45 tarihinde Justin A. Lemkul <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>> 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>>>
>>
>>
>>
>>
>>           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> | (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
>>
>>    ========================================
>>    --     gmx-users mailing list    gmx-users at gromacs.org
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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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-- 
Ahmet YILDIRIM
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