[gmx-users] Error in pdb2gmx.....Atom CE2 not found in residue PHE270 while adding hydrogens

Justin A. Lemkul jalemkul at vt.edu
Thu Aug 14 11:56:13 CEST 2008



vivek sharma wrote:
> Hi Justin,
> Thanx for your helpful advice, but i have corrected the name of 2nd 3rd 
> molecule as shown in last mail, still it is showing errors can you 
> suggest some good tutorial for understanding the nomenclature for atoms 
> in those files (My apologies for asking you something out of the topic)
> 

The best reading is the Gromacs manual.  If you are still getting the same 
error, it simply means you haven't re-named everything appropriately and you 
need to carefully check your work.

-Justin

> With Thanx,
> Vivek
> 
> 2008/8/13 Justin A. Lemkul <jalemkul at vt.edu <mailto:jalemkul at vt.edu>>
> 
>     Every atom must be named appropriately, not just the first.  Keep
>     making the appropriate changes.
> 
>     -Justin
> 
>     vivek sharma wrote:
> 
>         Hi Justin,
>         Thanx again, your option worked for me now it is giving error
>         for the atom just next to PA (changed to AP) i.e. AO1 as
> 
>         Processing chain 5 'E' (372 atoms, 9 residues)
>         There are 0 donors and 0 acceptors
>         There are 0 hydrogen bonds
> 
>         -------------------------------------------------------
>         Program pdb2gmx, VERSION 3.3.3
>         Source code file: pdb2gmx.c, line: 421
> 
>         Fatal error:
>         Atom AO1 in residue NDPH 1 not found in rtp entry with 56 atoms
>                     while sorting atoms
>         -------------------------------------------------------
>          following is the ligand atoms from the .rtp file
> 
>         [ NADH ]
>          [ atoms ]
>           AP     P     0.76000     0
>          AO1P    OM    -0.63500     0
>          AO2P    OM    -0.63500     0
>          AO5*    OA    -0.36000     0
>          O3P    OA    -0.26000     1
>           NP     P     0.76000     1
>          NO1P    OM    -0.63500     1
>          NO2P    OM    -0.63500     1
>          NO5*    OA    -0.36000     1
>          AC5*   CH2     0.00000     2
>          AC4*   CH1     0.16000     3
>          AO4*    OA    -0.36000     3
>          AC1*   CH1     0.20000     3
>          AN9    NR    -0.20000     4
>          AC4     C     0.20000     4
>          AN3    NR    -0.36000     5
>          AC2   CR1     0.36000     5
>          AN1    NR    -0.36000     6
>          AC6     C     0.36000     6
>          AN6    NT    -0.83000     7
>          AH61     H     0.41500     7
>          AH62     H     0.41500     7
>          AC5     C     0.00000     8
>          AN7    NR    -0.36000     8
>          AC8   CR1     0.36000     8
>          AC2*   CH1     0.15000     9
>          AO2*    OA    -0.54800     9
>          AH2*     H     0.39800     9
>          AC3*   CH1     0.15000    10
>          AO3*    OA    -0.54800    10
>          AH3*     H     0.39800    10
>          NC5*   CH2     0.00000    11
>          NC4*   CH1     0.16000    12
>          NO4*    OA    -0.36000    12
>          NC1*   CH1     0.20000    12
>          NN1    NR    -0.20000    13
>          NC6   CR1     0.20000    13
>          NC2   CR1     0.00000    13
>          NC3     C     0.00000    13
>          NC4   CH2     0.00000    13
>          NC5   CR1     0.00000    13
>          NC7     C     0.38000    14
>          NO7     O    -0.38000    14
>          NN7    NT    -0.83000    15
>          NH71     H     0.41500    15
>          NH72     H     0.41500    15
>          NC2*   CH1     0.15000    16
>          NO2*    OA    -0.54800    16
>          NH2*     H     0.39800    16
>          NC3*   CH1     0.15000    17
>          NO3*    OA    -0.54800    17
>          NH3*     H     0.39800    17
> 
>         And the corresponding atom listing from 1XU9.pdb is as...
> 
>         HETATM 8111  AP  NDPH     1       8.809  -4.754  22.676  1.00 12.71
>         HETATM 8112  AO1 NDPH     1      10.106  -4.137  23.158  1.00 11.98
>         HETATM 8113  AO2 NDPH     1       8.869  -5.751  21.580  1.00 13.09
>         HETATM 8114  O5B NDPH     1       8.010  -5.348  23.937  1.00 12.91
>         HETATM 8115  C5B NDPH     1       6.913  -6.239  23.752  1.00 12.91
>         HETATM 8116  C4B NDPH     1       6.493  -6.754  25.120  1.00 10.44
>         HETATM 8117  O4B NDPH     1       5.292  -7.535  24.969  1.00 13.02
>         HETATM 8118  C3B NDPH     1       7.588  -7.667  25.612  1.00 10.90
>         HETATM 8119  O3B NDPH     1       7.552  -7.543  27.047  1.00 12.99
>         HETATM 8120  C2B NDPH     1       7.086  -9.053  25.407  1.00 12.38
>         HETATM 8121  O2B NDPH     1       7.660 -10.046  26.246  1.00 13.11
>         HETATM 8122  C1B NDPH     1       5.579  -8.877  25.356  1.00 12.53
>         HETATM 8123  N9A NDPH     1       4.817  -9.905  24.673  1.00 11.65
>         HETATM 8124  C8A NDPH     1       5.033 -10.388  23.429  1.00 10.38
>         HETATM 8125  N7A NDPH     1       4.132 -11.360  23.119  1.00 11.50
>         HETATM 8126  C5A NDPH     1       3.332 -11.498  24.179  1.00 10.26
>         HETATM 8127  C6A NDPH     1       2.217 -12.337  24.568  1.00 11.19
>         HETATM 8128  N6A NDPH     1       1.746 -13.251  23.689  1.00 12.10
>         HETATM 8129  N1A NDPH     1       1.678 -12.169  25.805  1.00 11.24
>         HETATM 8130  C2A NDPH     1       2.130 -11.262  26.690  1.00 10.83
>         HETATM 8131  N3A NDPH     1       3.161 -10.439  26.428  1.00 10.06
>         HETATM 8132  C4A NDPH     1       3.776 -10.558  25.154  1.00 11.15
>         HETATM 8133  O3  NDPH     1       7.769  -3.631  22.173  1.00 12.62
>         HETATM 8134  PN  NDPH     1       7.989  -2.036  22.130  1.00 12.08
>         HETATM 8135  O1N NDPH     1       8.430  -1.526  23.461  1.00 11.89
>         HETATM 8136  O2N NDPH     1       8.741  -1.692  20.889  1.00 11.73
>         HETATM 8137  O5D NDPH     1       6.467  -1.533  21.886  1.00 12.66
>         HETATM 8138  C5D NDPH     1       5.611  -1.361  23.020  1.00 11.65
>         HETATM 8139  C4D NDPH     1       4.298  -0.748  22.582  1.00 11.67
>         HETATM 8140  O4D NDPH     1       4.556   0.487  21.875  1.00 12.21
>         HETATM 8141  C3D NDPH     1       3.548  -1.649  21.637  1.00 11.97
>         HETATM 8142  O3D NDPH     1       2.175  -1.497  22.010  1.00 11.22
>         HETATM 8143  C2D NDPH     1       3.579  -0.984  20.290  1.00 12.02
>         HETATM 8144  O2D NDPH     1       2.475  -1.229  19.433  1.00 11.31
>         HETATM 8145  C1D NDPH     1       3.974   0.454  20.593  1.00 12.46
>         HETATM 8146  N1N NDPH     1       4.714   1.092  19.529  1.00 11.43
>         HETATM 8147  C2N NDPH     1       6.045   0.998  19.502  1.00 11.26
>         HETATM 8148  C3N NDPH     1       6.724   1.599  18.453  1.00 10.05
>         HETATM 8149  C7N NDPH     1       8.217   1.540  18.362  1.00 11.67
>         HETATM 8150  O7N NDPH     1       8.756   2.105  17.403  1.00 11.17
>         HETATM 8151  N7N NDPH     1       8.916   0.848  19.266  1.00 11.33
>         HETATM 8152  C4N NDPH     1       6.022   2.270  17.471  1.00 10.99
>         HETATM 8153  C5N NDPH     1       4.641   2.345  17.528  1.00 11.46
>         HETATM 8154  C6N NDPH     1       4.005   1.748  18.602  1.00 12.11
>         HETATM 8155  P2B NDPH     1       7.584 -11.626  25.952  1.00 13.18
>         HETATM 8156  O1X NDPH     1       8.540 -12.200  26.975  1.00 15.49
>         HETATM 8157  O2X NDPH     1       6.162 -12.049  26.180  1.00 13.31
>         HETATM 8158  O3X NDPH     1       8.073 -11.835  24.534  1.00 13.10
>         HETATM 8159  PA  NDPH     2     -29.029  -5.471   7.894  1.00 12.85
>         HETATM 8160  O1A NDPH     2     -30.208  -4.995   7.102  1.00 13.51
>         HETATM 8161  O2A NDPH     2     -29.200  -5.823   9.322  1.00 11.99
>         HETATM 8162  O5B NDPH     2     -28.355  -6.688   7.107  1.00 11.99
>         HETATM 8163  C5B NDPH     2     -27.299  -7.469   7.665  1.00 12.75
>         HETATM 8164  C4B NDPH     2     -27.105  -8.686   6.774  1.00 11.47
> 
>         now trick is not working for atom next to PA, please tell me if
>         there is any thing should be taken care while doing so.
>         sorry for cribbing you again and again, but I am helpless in
>         this field.
>         Please suggest
> 
>         With Thanx,
>         Vivek
> 
>         2008/8/13 Justin A. Lemkul <jalemkul at vt.edu
>         <mailto:jalemkul at vt.edu> <mailto:jalemkul at vt.edu
>         <mailto:jalemkul at vt.edu>>>
> 
> 
> 
> 
>            vivek sharma wrote:
> 
>                Hi Justin,
>                Thanx for your suggestion. But, I am not getting how to do
>                correction in those files I am using gromacs 3.3.3 and
>         1XU9.pdb
>                molecule for my simulation.
>                I am not getting what is happening in the
>         simulation...:(...:(
>                kindly suggest.
> 
> 
>            I'm guessing that NDP is the NADPH cofactor, which in Gromos96
>            language is called NDPH (that's what pdb2gmx is trying to
>         call, it
>            as well).  What's happening is you've got the atoms present for
>            NADPH, but the force field simply has different names for the
>         atoms.
> 
>            The simple fix is to re-name the atoms in the .pdb file
>         according to
>            how they appear in the .rtp entry for NADPH (called NDPH).  For
>            example, the two phosphorus atoms in the phosphodiester
>         between the
>            adenosine and nicotinamide moieties are called AP and NP.  AP
>            corresponds to the P atom in the phosphate donated by the
>         adenoside
>            system; NP corresponds to the P atom from the nicotinamide
>            phosphate.  You've got an atom called PA instead, which is
>         probably
>            equivalent to AP (but do check, because that's just a guess
>         from my
>            end).
> 
>            -Justin
> 
> 
>                With Thanx,
>                Vivek
> 
> 
>                2008/8/13 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>>>>
> 
> 
>                   There are two potential solutions to this error.  For
>         background,
>                   refer to:
> 
>                        
>         http://wiki.gromacs.org/index.php/Errors#Residue_.27XXX.27_not_found_in_residue_topology_database
> 
>                   So your options are:
> 
>                   1. If the ligand is present in the .rtp file, make
>         sure your atom
>                   nomenclature corresponds to that of the force field.
>                   2. Remove the ligand and deal with its topology separately
>                (search
>                   Google for John Kerrigan's tutorial for enzyme-ligand
>         systems).
> 
>                   -Justin
> 
>                   vivek sharma wrote:
> 
>                       Hi Nahren,
>                       Thanx for your help, I opened the pdb file with
>         swisspdb
>                viewer
>                       and then tried the pdb2gmx command over that pdb
>         file and got
>                       the following error.
> 
>                       Total mass 28295.072 a.m.u.
>                       Total charge 1.000 e
>                       Writing topology
>                       Processing chain 5 'E' (372 atoms, 9 residues)
>                       There are 0 donors and 0 acceptors
>                       There are 0 hydrogen bonds
>                       Warning: 'NDP' not found in residue topology database,
>                trying to
>                       use 'NDPH'
> 
>                      
>         -------------------------------------------------------
>                       Program pdb2gmx, VERSION 3.3.3
>                       Source code file: pdb2gmx.c, line: 421
> 
>                       Fatal error:
>                       Atom PA in residue NDPH 1 not found in rtp entry
>         with 56
>                atoms
>                                   while sorting atoms
>                      
>         -------------------------------------------------------
> 
>                       and the error for the all atom forcefield were as
>         follow.
> 
>                      
>         -------------------------------------------------------
>                       Program pdb2gmx, VERSION 3.3.3
>                       Source code file: resall.c, line: 436
> 
>                       Fatal error:
>                       Residue 'NDP' not found in residue topology database
> 
>                      
>         -------------------------------------------------------
>                               any advice for this will be of great help
>         for me.
> 
>                       Thanx,
>                       Vivek
> 
>                       2008/8/12 nahren manuel <meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com>
>                <mailto:meetnahren at yahoo.com <mailto:meetnahren at yahoo.com>>
>                       <mailto:meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com>
>                <mailto:meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com>>> <mailto:meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com>
>                <mailto:meetnahren at yahoo.com <mailto:meetnahren at yahoo.com>>
> 
>                       <mailto:meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com> <mailto:meetnahren at yahoo.com
>         <mailto:meetnahren at yahoo.com>>>>>
> 
> 
> 
>                          Dear Vivek,
>                          you just have to download swisspdb and open
>         your pdb file.
>                       Thats all
>                          you got to do and It is more than enough. If
>         you have more
>                       than 2/3
>                          residues missing then, make sure the Ramachandran
>                plots are fine.
>                          Also try a simple minimization before begining
>         gromacs.
>                              nahren
> 
>                          --- On *Tue, 8/12/08, vivek sharma
>                       /<viveksharma.iitb at gmail.com
>         <mailto:viveksharma.iitb at gmail.com>
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>         <mailto:viveksharma.iitb at gmail.com>
>                <mailto:viveksharma.iitb at gmail.com
>         <mailto:viveksharma.iitb at gmail.com>>>
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>                <mailto:viveksharma.iitb at gmail.com
>         <mailto:viveksharma.iitb at gmail.com>>>>>/* wrote:
> 
>                              From: vivek sharma
>         <viveksharma.iitb at gmail.com <mailto:viveksharma.iitb at gmail.com>
>                <mailto:viveksharma.iitb at gmail.com
>         <mailto:viveksharma.iitb at gmail.com>>
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> 
>                              Subject: Re: [gmx-users] Error in
>         pdb2gmx.....Atom CE2
>                       not found
>                              in residue PHE270 while adding hydrogens
>                              To: "Discussion list for GROMACS users"
>                       <gmx-users at gromacs.org
>         <mailto:gmx-users at gromacs.org> <mailto:gmx-users at gromacs.org
>         <mailto:gmx-users at gromacs.org>>
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> 
>                              Date: Tuesday, August 12, 2008, 6:34 PM
> 
> 
>                              Hi David,
>                              Thanx a lot again. can you please tell me the
>                criteria or the
>                              standards to do such correction or can you
>         suggest
>                some
>                       link or
>                              tutorial for the same?
>                              whether swiss pdb can help in such cases?
> 
>                              With Thanx,
>                              Vivek
> 
> 
> 
>                              2008/8/12 David van der Spoel
>                <spoel at xray.bmc.uu.se <mailto:spoel at xray.bmc.uu.se>
>         <mailto:spoel at xray.bmc.uu.se <mailto:spoel at xray.bmc.uu.se>>
>                       <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se> <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se>>>
>                              <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se>
>                <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se>> <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se>
>                <mailto:spoel at xray.bmc.uu.se
>         <mailto:spoel at xray.bmc.uu.se>>>>>
> 
> 
> 
>                                  vivek sharma wrote:
> 
>                                      Hi There,
> 
>                                      I am new to molecular dynamics and
>         GROMACS.
>                                      While trying MD for 1XU9.pdb (pdbid) in
>                the very 1st
>                                      step on using the command....
> 
>                                       pdb2gmx -f 1XU9.pdb -o 1XU9.gro -p
>                1XU9.top -i
>                       1XU9.itp
>                                      -vsite hydrogen -water spce
> 
>                                      I got the following in the last of
>         error.....
>                                      ......
>                                      ......
>                                      ......
>                                      .......
>                                      N-terminus: NH3+
>                                      C-terminus: COO-
>                                      WARNING: atom CE2 not found in
>         residue 270
>                while
>                       adding atom
> 
>                                                
>          -------------------------------------------------------
>                                      Program pdb2gmx, VERSION 3.3.3
>                                      Source code file: genhydro.c, line: 304
> 
>                                      Fatal error:
>                                      Atom CE2 not found in residue
>         PHE270 while
>                adding
>                       hydrogens
>                                                
>          -------------------------------------------------------
>                                       I tried the same with different force
>                field and
>                       water
>                                      models, but getting the same error
>         again
>                and again.
>                                      any suggestion will be highly
>         appreciated.
> 
> 
>                                  You have an incorrect pdb file. An atom is
>                missing.
>                       You have
>                                  to fix it yourself.
> 
> 
> 
>                                      With thanx,
>                                      Vivek
> 
>                                                
>          ------------------------------------------------------------------------
> 
>                                          
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> 
>                   --    ========================================
> 
>                   Justin A. Lemkul
>                   Graduate Research Assistant
>                   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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>            --    ========================================
> 
>            Justin A. Lemkul
>            Graduate Research Assistant
>            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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> 
> 
>     -- 
>     ========================================
> 
>     Justin A. Lemkul
>     Graduate Research Assistant
>     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
> 
>     ========================================
> 
> 

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

Justin A. Lemkul
Graduate Research Assistant
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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