[gmx-users] Fatal error: Atom CA not found in residue LYSH200 while adding hydrogens

Tsjerk Wassenaar tsjerkw at gmail.com
Wed Oct 10 06:41:31 CEST 2007


Haining,

Did you check the structure for missing atoms/residues (REMARK 465/470)?

Tsjerk

On 10/10/07, Haining Liu <liu123s at uwindsor.ca> wrote:
>
> Hi,
>
> I have a problem using Gromacs. When I use the pdb2gmx command to
> generate the .top and .gro files, I got the error:
>
>                           :-)  G  R  O  M  A  C  S  (-:
>
>                       Gyas ROwers Mature At Cryogenic Speed
>
>                              :-)  VERSION 3.3.2  (-:
>
>
>        Written by David van der Spoel, Erik Lindahl, Berk Hess, and
> others.
>         Copyright (c) 1991-2000, University of Groningen, The
> Netherlands.
>               Copyright (c) 2001-2007, The GROMACS development team,
>              check out http://www.gromacs.org for more information.
>
>           This program is free software; you can redistribute it and/or
>            modify it under the terms of the GNU General Public License
>           as published by the Free Software Foundation; either version 2
>               of the License, or (at your option) any later version.
>
>                                 :-)  pdb2gmx  (-:
>
> Option     Filename  Type         Description
> ------------------------------------------------------------
>    -f       2FDG.pdb  Input        Generic structure: gro g96 pdb tpr
> tpb tpa
>                                     xml
>    -o       2FDG.gro  Output       Generic structure: gro g96 pdb xml
>    -p       2FDG.top  Output       Topology file
>    -i      posre.itp  Output       Include file for topology
>    -n      clean.ndx  Output, Opt. Index file
>    -q      clean.pdb  Output, Opt. Generic structure: gro g96 pdb xml
>
> Option       Type   Value   Description
> ------------------------------------------------------
> -[no]h       bool   no      Print help info and quit
> -[no]X       bool   no      Use dialog box GUI to edit command line
> options
> -nice        int    0       Set the nicelevel
> -[no]merge   bool   no      Merge chains into one molecule definition
> -ff          string select  Force field, interactive by default. Use -
> h for
>                              information.
> -water       enum   spc     Water model to use: with GROMOS we
> recommend SPC,
>                              with OPLS, TIP4P: spc, spce, tip3p,
> tip4p, tip5p
>                              or f3c
> -[no]inter   bool   no      Set the next 6 options to interactive
> -[no]ss      bool   no      Interactive SS bridge selection
> -[no]ter     bool   no      Interactive termini selection, iso charged
> -[no]lys     bool   no      Interactive Lysine selection, iso charged
> -[no]arg     bool   no      Interactive Arganine selection, iso charged
> -[no]asp     bool   no      Interactive Aspartic Acid selection, iso
> charged
> -[no]glu     bool   no      Interactive Glutamic Acid selection, iso
> charged
> -[no]gln     bool   no      Interactive Glutamine selection, iso neutral
> -[no]his     bool   no      Interactive Histidine selection, iso
> checking
>                              H-bonds
> -angle       real   135     Minimum hydrogen-donor-acceptor angle for a
>                              H-bond (degrees)
> -dist        real   0.3     Maximum donor-acceptor distance for a H-
> bond (nm)
> -[no]una     bool   no      Select aromatic rings with united CH
> atoms on
>                              Phenylalanine, Tryptophane and Tyrosine
> -[no]ignh    bool   no      Ignore hydrogen atoms that are in the pdb
> file
> -[no]missing bool   no      Continue when atoms are missing, dangerous
> -[no]v       bool   no      Be slightly more verbose in messages
> -posrefc     real   1000    Force constant for position restraints
> -vsite       enum   none    Convert atoms to virtual sites: none,
> hydrogens
>                              or aromatics
> -[no]heavyh  bool   no      Make hydrogen atoms heavy
> -[no]deuterate bool no      Change the mass of hydrogens to 2 amu
>
> Opening library file /usr/local/gromacs/share/gromacs/top/FF.dat
>
> Select the Force Field:
> 0: GROMOS96 43a1 force field
> 1: GROMOS96 43b1 vacuum force field
> 2: GROMOS96 43a2 force field (improved alkane dihedrals)
> 3: GROMOS96 45a3 force field (Schuler JCC 2001 22 1205)
> 4: GROMOS96 53a5 force field (JCC 2004 vol 25 pag 1656)
> 5: GROMOS96 53a6 force field (JCC 2004 vol 25 pag 1656)
> 6: OPLS-AA/L all-atom force field (2001 aminoacid dihedrals)
> 7: Encad all-atom force field, using scaled-down vacuum charges
> 8: Encad all-atom force field, using full solvent charges
> 0
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1.rtp
> Opening library file /usr/local/gromacs/share/gromacs/top/aminoacids.dat
> Reading 2FDG.pdb...
> WARNING: all CONECT records are ignored
> Read 'ALKYLATED DNA REPAIR PROTEIN ALKB; 5'-D(P*TP*(MA7)P*T)-3'',
> 1747 atoms
> Opening library file /usr/local/gromacs/share/gromacs/top/xlateat.dat
> 26 out of 26 lines of xlateat.dat converted succesfully
> Analyzing pdb file
> Gave chain 3 chain identifier 'C'
> There are 3 chains and 1 blocks of water and 324 residues with 1747
> atoms
>
>    chain  #res #atoms
>    1 'A'   200   1556
>    2 'B'     3     63
>    3 'C'     2      9
>    4 '-'   119    119  (only water)
>
> All occupancies are one
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1.atp
> Atomtype 50
> Reading residue database... (ffG43a1)
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1.rtp
> Residue 96
> Sorting it all out...
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1.hdb
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1-n.tdb
> Opening library file /usr/local/gromacs/share/gromacs/top/ffG43a1-c.tdb
> Processing chain 1 'A' (1556 atoms, 200 residues)
> There are 307 donors and 274 acceptors
> There are 442 hydrogen bonds
> Will use HISB for residue 52
> Will use HISB for residue 58
> Will use HISB for residue 83
> Will use HISA for residue 117
> Will use HISB for residue 158
> Will use HISA for residue 173
> Will use HISB for residue 183
> Checking for duplicate atoms....
> Opening library file /usr/local/gromacs/share/gromacs/top/specbond.dat
> 6 out of 6 lines of specbond.dat converted succesfully
> Special Atom Distance matrix:
>                     MET35   MET43   MET47   CYS50  HISB52  HISB58
> MET78
>                     SD270   SD326   SD352   SG374  NE2388  NE2438
> SD603
>     MET43   SD326   0.512
>     MET47   SD352   0.404   0.438
>     CYS50   SG374   1.375   1.733   1.304
>    HISB52  NE2388   1.976   2.415   2.060   1.098
>    HISB58  NE2438   1.169   1.333   1.453   2.160   2.198
>     MET78   SD603   1.727   2.055   1.634   0.534   0.889   2.316
>    HISB83  NE2647   2.030   2.379   1.967   0.828   0.738   2.511
> 0.354
>     CYS86   SG669   1.983   2.179   1.783   1.042   1.412   2.546
> 0.647
>    CYS103   SG793   1.332   1.583   1.151   0.441   1.336   2.130
> 0.571
> HISA117  NE2902   1.137   0.874   0.844   1.778   2.418   1.659   1.898
> HISB158 NE21226   2.370   2.389   2.050   1.701   2.709   3.430   1.866
> HISA173 NE21348   1.409   1.201   1.096   1.797   2.415   1.898   1.833
> HISB183 NE21423   2.480   2.432   2.147   2.005   3.052   3.576   2.217
>    CYS189  SG1467   1.697   1.684   1.437   1.597   2.689   2.859
> 2.005
>                    HISB83   CYS86  CYS103 HISA117 HISB158 HISA173
> HISB183
>                    NE2647   SG669   SG793  NE2902 NE21226 NE21348
> NE21423
>     CYS86   SG669   0.777
>    CYS103   SG793   0.924   0.768
> HISA117  NE2902   2.208   1.758   1.443
> HISB158 NE21226   2.113   1.745   1.523   2.213
> HISA173 NE21348   2.125   1.581   1.410   0.343   2.126
> HISB183 NE21423   2.484   2.093   1.818   2.292   0.403   2.228
>    CYS189  SG1467   2.327   2.111   1.513   1.882   1.060   1.967
> 0.992
>
>
> N-terminus: NH3+
> C-terminus: COO-
> WARNING: atom CA not found in residue 200 while adding atom
>
> -------------------------------------------------------
> Program pdb2gmx, VERSION 3.3.2
> Source code file: genhydro.c, line: 304
>
> Fatal error:
> Atom CA not found in residue LYSH200 while adding hydrogens
> -------------------------------------------------------
>
> "She's a Good Sheila Bruce" (Monty Python)
>
> The pdb file is downloaded from www.pdb.org without any changing. Can
> someone help to fix this problem?
>
> Thanks,
> Haining
> _______________________________________________
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>



-- 
Tsjerk A. Wassenaar, Ph.D.
Junior UD (post-doc)
Biomolecular NMR, Bijvoet Center
Utrecht University
Padualaan 8
3584 CH Utrecht
The Netherlands
P: +31-30-2539931
F: +31-30-2537623
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