[gmx-users] pdb2gmx doesn´t generate H

Pascal Baumann ehraboch at googlemail.com
Fri Jul 23 19:22:17 CEST 2010


Hi

I´m using GROMACS 4.0.7 with the Amber99sb forcefield.

I keep getting an error when I´m typing this command:
pdb2gmx -f t.pdb -o t2.pdb -ff amber99sb -water tip3p

I get this message:

WARNING: atom H is missing in residue SER 2 in the pdb file
         You might need to add atom H to the hydrogen database of residue
SER
         in the file ff???.hdb (see the manual)

Here are the corresponding lines of the files:

reductase.pdb:

ATOM      1  N   NSE A  1      14.028 -45.099  41.393  1.00 70.61
N
ATOM      2  CA  NSE A  1      13.637 -45.030  39.942  1.00 69.85
C
ATOM      3  C   NSE A  1      12.332 -44.253  39.785  1.00 66.00
C
ATOM      4  O   NSE A  1      11.291 -44.680  40.290  1.00 67.41
O
ATOM      5  CB  NSE A  1      13.473 -46.443  39.354  1.00 73.80
C
ATOM      6  OG  NSE A  1      12.142 -46.925  39.510  1.00 75.14
O
ATOM      7  N   SER A  2      12.366 -43.138  39.069  1.00 61.51
N
ATOM      8  CA  SER A  2      11.249 -42.208  39.122  1.00 57.44
C
ATOM      9  C   SER A  2      10.277 -42.342  37.951  1.00 56.07
C
ATOM     10  O   SER A  2      10.692 -42.367  36.799  1.00 55.81
O
ATOM     11  CB  SER A  2      11.785 -40.789  39.233  1.00 54.79
C
ATOM     12  OG  SER A  2      12.679 -40.695  40.327  1.00 54.65
O
ATOM     13  N   VAL A  3       8.984 -42.423  38.280  1.00 54.68
N
ATOM     14  CA  VAL A  3       7.904 -42.613  37.311  1.00 54.35
C
ATOM     15  C   VAL A  3       6.728 -41.642  37.550  1.00 51.88
C
ATOM     16  O   VAL A  3       5.964 -41.802  38.500  1.00 52.51
O
ATOM     17  CB  VAL A  3       7.359 -44.074  37.341  1.00 57.72
C
ATOM     18  CG1 VAL A  3       6.311 -44.289  36.237  1.00 57.58
C
ATOM     19  CG2 VAL A  3       8.498 -45.108  37.236  1.00 59.10
C

ffamber99sb.rtp:


[ SER ]
 [ atoms ]
     N    amber99_34  -0.41570     1
     H    amber99_17   0.27190     2
    CA    amber99_11  -0.02490     3
    HA    amber99_19   0.08430     4
    CB    amber99_11   0.21170     5
   HB1    amber99_19   0.03520     6
   HB2    amber99_19   0.03520     7
    OG    amber99_43  -0.65460     8
    HG    amber99_25   0.42750     9
     C    amber99_2    0.59730    10
     O    amber99_41  -0.56790    11
 [ bonds ]
     N     H
     N    CA
    CA    HA
    CA    CB
    CA     C
    CB   HB1
    CB   HB2
    CB    OG
    OG    HG
     C     O
    -C     N
 [ dihedrals ]
    CA     C    +N    +H    backbone_prop_1
     O     C    +N    +H    backbone_prop_2
    -C     N    CA    CB    backbone_prop_3
    -C     N    CA     C    backbone_prop_4
    CA     C    +N   +CA    backbone_prop_1
     O     C    +N   +CA    backbone_prop_1
 [ impropers ]
    -C    CA     N     H
    CA    +N     C     O


ffamber99sb.hdb:

SER    4
1    1    H    N    -C    CA
1    5    HA    CA    N    CB    C
2    6    HB    CB    CA    OG
1    2    HG    OG    CB    CA

When I´m running the command with -missing I get a topol.top file, where
just the SER 2 is missing the H. The other SER work properly.
Here are some lines:


[ atoms ]
;   nr       type  resnr residue  atom   cgnr     charge       mass
typeB    chargeB      massB
     1 amber99_39      1    NSE      N      1     0.1849      14.01   ; qtot
0.1849
     2 amber99_17      1    NSE     H1      2     0.1898      1.008   ; qtot
0.3747
     3 amber99_17      1    NSE     H2      3     0.1898      1.008   ; qtot
0.5645
     4 amber99_17      1    NSE     H3      4     0.1898      1.008   ; qtot
0.7543
     5 amber99_11      1    NSE     CA      5     0.0567      12.01   ; qtot
0.811
     6 amber99_28      1    NSE     HA      6     0.0782      1.008   ; qtot
0.8892
     7 amber99_11      1    NSE     CB      7     0.2596      12.01   ; qtot
1.149
     8 amber99_19      1    NSE    HB1      8     0.0273      1.008   ; qtot
1.176
     9 amber99_19      1    NSE    HB2      9     0.0273      1.008   ; qtot
1.203
    10 amber99_43      1    NSE     OG     10    -0.6714         16   ; qtot
0.532
    11 amber99_25      1    NSE     HG     11     0.4239      1.008   ; qtot
0.9559
    12  amber99_2      1    NSE      C     12     0.6163      12.01   ; qtot
1.572
    13 amber99_41      1    NSE      O     13    -0.5722         16   ; qtot
1
    14 amber99_34      2    SER      N     14    -0.4157      14.01   ; qtot
0.5843
    15 amber99_11      2    SER     CA     15    -0.0249      12.01   ; qtot
0.5594
    16 amber99_19      2    SER     HA     16     0.0843      1.008   ; qtot
0.6437
    17 amber99_11      2    SER     CB     17     0.2117      12.01   ; qtot
0.8554
    18 amber99_19      2    SER    HB1     18     0.0352      1.008   ; qtot
0.8906
    19 amber99_19      2    SER    HB2     19     0.0352      1.008   ; qtot
0.9258
    20 amber99_43      2    SER     OG     20    -0.6546         16   ; qtot
0.2712
    21 amber99_25      2    SER     HG     21     0.4275      1.008   ; qtot
0.6987
    22  amber99_2      2    SER      C     22     0.5973      12.01   ; qtot
1.296
    23 amber99_41      2    SER      O     23    -0.5679         16   ; qtot
0.7281

 207 amber99_34     16    SER      N    207    -0.4157      14.01   ; qtot
0.3124
   208 amber99_17     16    SER      H    208     0.2719      1.008   ; qtot
0.5843
   209 amber99_11     16    SER     CA    209    -0.0249      12.01   ; qtot
0.5594
   210 amber99_19     16    SER     HA    210     0.0843      1.008   ; qtot
0.6437
   211 amber99_11     16    SER     CB    211     0.2117      12.01   ; qtot
0.8554
   212 amber99_19     16    SER    HB1    212     0.0352      1.008   ; qtot
0.8906
   213 amber99_19     16    SER    HB2    213     0.0352      1.008   ; qtot
0.9258
   214 amber99_43     16    SER     OG    214    -0.6546         16   ; qtot
0.2712
   215 amber99_25     16    SER     HG    215     0.4275      1.008   ; qtot
0.6987
   216  amber99_2     16    SER      C    216     0.5973      12.01   ; qtot
1.296
   217 amber99_41     16    SER      O    217    -0.5679         16   ; qtot
0.7281

  3489 amber99_34    226    SER      N   3489    -0.4157      14.01   ; qtot
-15.69
  3490 amber99_17    226    SER      H   3490     0.2719      1.008   ; qtot
-15.42
  3491 amber99_11    226    SER     CA   3491    -0.0249      12.01   ; qtot
-15.44
  3492 amber99_19    226    SER     HA   3492     0.0843      1.008   ; qtot
-15.36
  3493 amber99_11    226    SER     CB   3493     0.2117      12.01   ; qtot
-15.14
  3494 amber99_19    226    SER    HB1   3494     0.0352      1.008   ; qtot
-15.11
  3495 amber99_19    226    SER    HB2   3495     0.0352      1.008   ; qtot
-15.07
  3496 amber99_43    226    SER     OG   3496    -0.6546         16   ; qtot
-15.73
  3497 amber99_25    226    SER     HG   3497     0.4275      1.008   ; qtot
-15.3
  3498  amber99_2    226    SER      C   3498     0.5973      12.01   ; qtot
-14.7
  3499 amber99_41    226    SER      O   3499    -0.5679         16   ; qtot
-15.27

-KHS
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