[gmx-users] problems with my PDB file

Jacob Harvey j.harv8 at gmail.com
Sat Apr 4 20:03:17 CEST 2009


Dear All,

I seem to be having issues with the pdb file I wish to use in gromacs. I am
trying to model this system using the OPLS-AA force field however I get the
error

"Fatal error:
Residue '' not found in residue topology database"

I know what this error means but its not naming a specific residue so I'm
not sure where I am going wrong in terms of naming my atoms. Does anyone see
a way to fix this problem. Thank you.

my pdb file:

HETATM    1  CA      2     2      -4.438   3.334   2.988
HETATM    2  CA      2     2       0.588   3.313   0.517
HETATM    3  CA      2     2       5.476   3.310  -2.216
HETATM    4  H4      2     2      -4.134   2.590   3.731
HETATM    5  H5      2     2      -5.525   3.438   3.047
HETATM    6  H6      2     2      -3.996   4.291   3.276
HETATM    7  H7      2     2       1.480   3.111   1.117
HETATM    8  H8      2     2      -0.266   3.349   1.200
HETATM    9  H9      2     2       0.702   4.307   0.076
HETATM   10  H10     2     2       6.375   3.525  -1.633
HETATM   11  H11     2     2       4.648   3.862  -1.761
HETATM   12  H12     2     2       5.628   3.709  -3.223
HETATM   13  CA      2     2      -3.996   2.922   1.581
HETATM   14  H14     2     2      -2.902   2.862   1.545
HETATM   15  H15     2     2      -4.281   3.703   0.865
HETATM   16  CA      2     2       0.394   2.242  -0.557
HETATM   17  H17     2     2      -0.485   2.486  -1.167
HETATM   18  H18     2     2       1.250   2.252  -1.242
HETATM   19  CA      2     2       5.188   1.805  -2.247
HETATM   20  H20     2     2       6.018   1.286  -2.742
HETATM   21  H21     2     2       4.300   1.615  -2.864
HETATM   22  CA      2     2      -4.587   1.582   1.127
HETATM   23  H23     2     2      -5.682   1.638   1.161
HETATM   24  H24     2     2      -4.298   0.792   1.828
HETATM   25  CA      2     2       0.235   0.836   0.028
HETATM   26  H26     2     2      -0.616   0.818   0.720
HETATM   27  H27     2     2       1.117   0.581   0.625
HETATM   28  CA      2     2       4.981   1.206  -0.852
HETATM   29  H29     2     2       4.152   1.720  -0.350
HETATM   30  H30     2     2       5.867   1.381  -0.234
HETATM   31  CB      2     2      -4.129   1.184  -0.291
HETATM   32  H32     2     2      -4.398   1.981  -0.995
HETATM   33  H33     2     2      -3.041   1.101  -0.315
HETATM   34  CB      2     2       0.034  -0.248  -1.048
HETATM   35  H35     2     2      -0.851  -0.016  -1.650
HETATM   36  H36     2     2       0.890  -0.242  -1.730
HETATM   37  CB      2     2       4.702  -0.306  -0.866
HETATM   38  H38     2     2       3.772  -0.519  -1.404
HETATM   39  H39     2     2       5.504  -0.809  -1.420
HETATM   40  CD2     2     2      -6.169  -1.597  -1.527
HETATM   41  H41     2     2      -6.700   0.434  -1.148
HETATM   42  CE1     2     2      -4.945  -2.182  -1.371
HETATM   43  H43     2     2      -7.118  -1.976  -1.868
HETATM   44  H44     2     2      -4.663  -3.203  -1.569
HETATM   45  CD2     2     2      -1.054  -3.462   0.297
HETATM   46  H46     2     2      -2.230  -1.848  -0.502
HETATM   47  CE1     2     2       0.307  -3.542   0.421
HETATM   48  H48     2     2      -1.844  -4.148   0.553
HETATM   49  H49     2     2       0.898  -4.352   0.820
HETATM   50  CD2     2     2       3.845  -1.970   2.274
HETATM   51  H51     2     2       2.694  -1.850   0.476
HETATM   52  CE1     2     2       5.086  -1.451   2.534
HETATM   53  H53     2     2       3.156  -2.545   2.870
HETATM   54  H54     2     2       5.660  -1.519   3.446
HETATM   55  CG      2     2      -4.687  -0.117  -0.776
HETATM   56  CG      2     2      -0.105  -1.625  -0.478
HETATM   57  CG      2     2       4.625  -0.891   0.514
HETATM   58  NE2     2     2      -5.991  -0.283  -1.145
HETATM   59  ND1     2     2      -4.033  -1.258  -0.903
HETATM   60  NE2     2     2      -1.303  -2.236  -0.278
HETATM   61  ND1     2     2       0.892  -2.392  -0.062
HETATM   62  NE2     2     2       3.558  -1.605   0.977
HETATM   63  ND1     2     2       5.566  -0.779   1.434

-- 
--
Jacob Harvey

Graduate Student

University of Massachusetts Amherst

j.harv8 at gmail.com
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