[gmx-users] regarding x2top error

priya thiyagarajan priya.thiyagarajan09 at gmail.com
Mon Dec 19 07:15:16 CET 2011


hello sir,
 i tried to produce rtp file using x2top command for my file
HETATM  123  C   BFC A   1       0.446  -0.085   2.419  1.00
0.00           C
HETATM  124  O   BFC A   1       0.234  -0.665   3.482  1.00
0.00           O
HETATM  125  CA  BFC A   1       1.485  -0.637   1.467  1.00
0.00           C
HETATM  126  CB  BFC A   1       1.895   0.310   0.300  1.00
0.00           C
HETATM  127  OB  BFC A   1       0.871   0.428  -0.648  1.00
0.00           O
HETATM  128  CC  BFC A   1       3.158  -0.281  -0.373  1.00
0.00           C
HETATM  129  CD  BFC A   1       3.913   0.725  -1.260  1.00
0.00           C
HETATM  130  CE  BFC A   1       4.740   1.741  -0.452  1.00
0.00           C
HETATM  131  CF  BFC A   1       5.487   2.778  -1.309  1.00
0.00           C
HETATM  132  CG  BFC A   1       4.591   3.814  -2.015  1.00
0.00           C
HETATM  133  CH  BFC A   1       3.801   4.715  -1.053  1.00
0.00           C
HETATM  134  CI  BFC A   1       2.988   5.801  -1.771  1.00
0.00           C
HETATM  135  CJ  BFC A   1       2.160   6.653  -0.799  1.00
0.00           C
HETATM  136  CK  BFC A   1       1.328   7.736  -1.500  1.00
0.00           C
HETATM  137  CL  BFC A   1       0.560   8.633  -0.516  1.00
0.00           C
HETATM  138  CM  BFC A   1      -0.302   9.699  -1.195  1.00
0.00           C
HETATM  139  HA1 BFC A   1       1.124  -1.605   1.056  1.00
0.00           H
HETATM  140  HA2 BFC A   1       2.392  -0.853   2.076  1.00
0.00           H
HETATM  141  HB  BFC A   1       2.141   1.308   0.723  1.00
0.00           H
HETATM  142  HC1 BFC A   1       2.862  -1.163  -0.985  1.00
0.00           H
HETATM  143  HC2 BFC A   1       3.865  -0.642   0.407  1.00
0.00           H
HETATM  144  HD1 BFC A   1       3.187   1.254  -1.912  1.00
0.00           H
HETATM  145  HD2 BFC A   1       4.611   0.159  -1.917  1.00
0.00           H
HETATM  146  HE1 BFC A   1       5.500   1.172   0.131  1.00
0.00           H
HETATM  147  HE2 BFC A   1       4.095   2.266   0.282  1.00
0.00           H
HETATM  148  HF1 BFC A   1       6.091   2.242  -2.076  1.00
0.00           H
HETATM  149  HF2 BFC A   1       6.198   3.330  -0.654  1.00
0.00           H
HETATM  150  HG1 BFC A   1       3.885   3.296  -2.697  1.00
0.00           H
HETATM  151  HG2 BFC A   1       5.246   4.463  -2.639  1.00
0.00           H
HETATM  152  HH1 BFC A   1       4.510   5.203  -0.347  1.00
0.00           H
HETATM  153  HH2 BFC A   1       3.098   4.091  -0.457  1.00
0.00           H
HETATM  154  HI1 BFC A   1       2.301   5.317  -2.498  1.00
0.00           H
HETATM  155  HI2 BFC A   1       3.682   6.462  -2.337  1.00
0.00           H
HETATM  156  HJ1 BFC A   1       2.846   7.138  -0.069  1.00
0.00           H
HETATM  157  HJ2 BFC A   1       1.471   5.988  -0.230  1.00
0.00           H
HETATM  158  HK1 BFC A   1       0.600   7.244  -2.181  1.00
0.00           H
HETATM  159  HK2 BFC A   1       2.004   8.371  -2.115  1.00
0.00           H
HETATM  160  HL1 BFC A   1       1.291   9.135   0.158  1.00
0.00           H
HETATM  161  HL2 BFC A   1      -0.094   7.990   0.114  1.00
0.00           H
HETATM  162  HM1 BFC A   1       0.328  10.382  -1.806  1.00
0.00           H
HETATM  163  HM2 BFC A   1      -0.840  10.303  -0.434  1.00
0.00           H
HETATM  164  HM3 BFC A   1      -1.054   9.220  -1.859  1.00
0.00           H

i used  g_x2top -f fattyacid.pdb -o out.top -r out.rtp -nopbc  command.
but i got error as

*
There are 23 name to type translations in file oplsaa.ff
Generating bonds from distances...
atom 42
Can not find forcefield for atom C-1 with 2 bonds

-------------------------------------------------------
Program g_x2top, VERSION 4.5.5
Source code file: g_x2top.c, line: 206

Fatal error:
Could only find a forcefield type for 41 out of 42 atoms.*

 i dono how to resolve this . can anyone pls tell me how to solve tis.
i checked my .n2t file also. but i couldnt get the error.
help me with your answer ...
 thanking you,
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