[gmx-users] if PRODRG calculate incorrectly

ahmet yıldırım ahmedo047 at gmail.com
Sat Sep 17 15:28:19 CEST 2011


Dear Tsjerk and Justin,

Thanks for your reply. I will contact the PRODRG developers.
can you suggest anyway/anytool for generating ligand coordinates/topologies?


Thanks in advance

17 Eylül 2011 15:58 tarihinde Justin A. Lemkul <jalemkul at vt.edu> yazdı:

>
>
> ahmet yıldırım wrote:
>
>> Dear users,
>> I have a problem related to PRODRG.
>>
>> Chirality:NO
>> Full charges: YES
>> Energy minimization: NO
>>
>> _*İnput file name:TRS.pdb*_
>> HETATM 1803  C   TRS B 232      38.588  -4.733  65.956  1.00 17.99
>>   C ANISOU 1803  C   TRS B 232     2126   1948   2760   -378     45    -81
>>     C HETATM 1804  C1  TRS B 232      40.103  -5.057  65.899  1.00 16.81
>>       C ANISOU 1804  C1  TRS B 232     1642   1577   3168   -531    171
>>  120       C HETATM 1805  C2  TRS B 232      37.795  -5.994  66.343  1.00
>> 20.76           C ANISOU 1805  C2  TRS B 232     2790   2021   3077     67
>>  141   -408       C HETATM 1806  C3  TRS B 232      38.160  -3.717  67.031
>>  1.00 16.86           C ANISOU 1806  C3  TRS B 232     2240   1557   2611
>> -491      8   -192       C HETATM 1807  N   TRS B 232      38.227  -4.154
>>  64.652  1.00 18.26           N ANISOU 1807  N   TRS B 232     2336   2520
>> 2083   -166     46   -112       N HETATM 1808  O1  TRS B 232      40.741
>>  -4.020  65.158  1.00 17.53           O ANISOU 1808  O1  TRS B 232     1921
>>   1579   3163   -225    147    197       O HETATM 1809  O2  TRS B 232
>>  37.871  -6.803  65.211  1.00 23.91           O ANISOU 1809  O2  TRS B 232
>>   3018   2456   3610    -48    -86   -450       O HETATM 1810  O3  TRS B 232
>>      38.871  -2.531  66.874  1.00 18.28           O ANISOU 1810  O3  TRS B
>> 232     2677   1594   2673    197     -4    -52       O
>>
>> I get the output _as the following file1.itp_ from your PRODRG server for
>> TRS ligand before 3-4 months. I think this calculate is correct:
>> *_file1.itp_*
>> ................
>> [ moleculetype ]
>> ; Name nrexcl
>> TRS      3
>>
>> [ atoms ]
>> ;   nr      type  resnr resid  atom  cgnr   charge     mass
>>     1        OA     1  TRS      O1     1   -0.240  15.9994       2
>>  H      1  TRS     HAA     1    0.052   1.0080       3       CH2     1  TRS
>>      C1     1    0.061  14.0270       4       CH1     1  TRS       C     1
>>  0.127  12.0110       5       CH2     1  TRS      C3     2    0.090  14.0270
>>       6        OA     1  TRS      O3     2   -0.165  15.9994       7
>>  H      1  TRS     HAC     2    0.075   1.0080       8        NL     1  TRS
>>       N     3    0.876  14.0067       9         H     1  TRS     HAE     3
>>  0.041   1.0080      10         H     1  TRS     HAF     3    0.042   1.0080
>>      11         H     1  TRS     HAD     3    0.041   1.0080      12
>> CH2     1  TRS      C2     4    0.090  14.0270      13        OA     1  TRS
>>      O2     4   -0.165  15.9994      14        H      1  TRS     HAB     4
>>  0.075   1.0080  ....................
>>
>>
>> But Now, That is, today,  I get the output _as the following file2.itp_
>> from your PRODRG server for TRS ligand.
>> *_file2.itp_*
>> .....
>> [ moleculetype ]
>> ; Name nrexcl
>> TRS      3
>>
>> [ atoms ]
>> ;   nr      type  resnr resid  atom  cgnr   charge     mass
>>     1        OA     1  TRS      O1     1   -0.173  15.9994       2
>> H     1  TRS     H13     1    0.061   1.0080       3       CH2     1  TRS
>>    C1     1    0.165  14.0270       4      CCL4     1  TRS       C     1
>>  0.177  12.0110       5       CH2     1  TRS      C3     1    0.165  14.0270
>>       6        OA     1  TRS      O3     1   -0.174  15.9994       7
>> H     1  TRS     H33     1    0.062   1.0080       8        NL     1  TRS
>>     N     1    0.675  14.0067       9         H     1  TRS      H2     1
>>  0.014   1.0080      10         H     1  TRS      H3     1    0.014   1.0080
>>      11         H     1  TRS      H1     1    0.014   1.0080      12
>> CH2     1  TRS      C2     2    0.144  14.0270      13        OA     1  TRS
>>      O2     2   -0.198  15.9994      14         H     1  TRS     H23     2
>>  0.054   1.0080  ....
>>
>> Now, I think PRODRG calculate incorrectly  cgnr   charge
>>
>>
> I agree with Tsjerk that you should contact the PRODRG developers regarding
> the differences, but I would also say that neither of these files is
> correct. PRODRG has never given reliable charges.  See, for instance
> (something I posted dozens of times before):
>
> http://pubs.acs.org/doi/abs/**10.1021/ci100335w<http://pubs.acs.org/doi/abs/10.1021/ci100335w>
>
> -Justin
>
>
>  What should I do? can you help me?
>>
>> --
>> 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<http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin>
>
> ==============================**==========
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-- 
Ahmet YILDIRIM
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