Input format

You can submit any file in PDB format (see the example shown below). You must take into account some important things:

1.- You must know that any heteroatom (defined by HETATM word in any file with PDB format) of your molecule will be not included in the calculation.

2.- If there is a pair of duplicate atoms in the file (see magenta color in the example below), the one with the highest occupancy will be selected. If the occupancy is the same, the one with the lowest temperature factor will be selected. If both parameters are the same, only the first atom in the file (in up-down order) will be selected and the other one will be discarted.

3.- All hydrogens will be discarted and not included in the calculation. This program only considers the heavy atoms of the 20 standard amino acids.


ATOM      1  N   ALA A   1      17.281 -12.044  15.291  1.00  9.63      1LGA 182
ATOM      2  CA  ALA A   1      16.532 -11.846  16.500  1.00 10.37      1LGA 183
ATOM      3  C   ALA A   1      15.072 -11.946  16.066  1.00 12.28      1LGA 184
ATOM      4  O   ALA A   1      14.706 -11.312  15.076  1.00 13.89      1LGA 185
ATOM      5  CB  ALA A   1      16.778 -10.476  17.035  1.00  8.35      1LGA 186
ATOM      6  N   THR A   2      14.237 -12.782  16.684  1.00 14.79      1LGA 187
ATOM      7  CA  THR A   2      12.820 -12.861  16.388  1.00 15.39      1LGA 188
ATOM      8  C   THR A   2      12.180 -11.963  17.414  1.00 14.64      1LGA 189
ATOM      9  O   THR A   2      12.401 -12.151  18.609  1.00 14.60      1LGA 190
ATOM     10  CB  THR A   2      12.252 -14.245  16.605  1.00 16.69      1LGA 191
ATOM     11  OG1 THR A   2      13.147 -15.181  16.020  1.00 18.25      1LGA 192
ATOM     12  CG2ATHR A   2      10.841 -14.330  16.025  0.80 18.23      1LGA 193
ATOM     13  CG2BTHR A   2      10.324 -13.978  15.875  0.20 18.23      1LGA 194
ATOM     14  N   CYS A   3      11.444 -10.966  16.984  1.00 13.62      1LGA 195
ATOM     15  CA  CYS A   3      10.752 -10.126  17.940  1.00  9.77      1LGA 196
ATOM     16  C   CYS A   3       9.521 -10.849  18.487  1.00 10.93      1LGA 197
ATOM     17  O   CYS A   3       9.149 -11.936  18.014  1.00  6.80      1LGA 198
ATOM     18  CB  CYS A   3      10.379  -8.822  17.223  1.00 11.29      1LGA 199
ATOM     19  SG  CYS A   3      11.790  -7.866  16.578  1.00  9.10      1LGA 200
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ATOM   2536  N   HIS A 341      -2.314  19.492   9.177  1.00 29.03      1LGA2717
ATOM   2537  CA  HIS A 341      -2.789  18.781  10.344  1.00 33.85      1LGA2718
ATOM   2538  C   HIS A 341      -3.410  19.644  11.447  1.00 37.88      1LGA2719
ATOM   2539  O   HIS A 341      -2.869  20.698  11.792  1.00 39.96      1LGA2720
ATOM   2540  CB  HIS A 341      -1.600  17.999  10.869  1.00 34.00      1LGA2721
ATOM   2541  CG  HIS A 341      -1.503  17.793  12.382  1.00 37.15      1LGA2722
ATOM   2542  ND1 HIS A 341      -1.018  18.648  13.298  1.00 40.05      1LGA2723
ATOM   2543  CD2 HIS A 341      -1.874  16.636  13.036  1.00 36.43      1LGA2724
ATOM   2544  CE1 HIS A 341      -1.067  18.048  14.463  1.00 39.50      1LGA2725
ATOM   2545  NE2 HIS A 341      -1.582  16.846  14.294  1.00 38.96      1LGA2726
ATOM   2546  N   LYS A 342      -4.475  19.122  12.076  1.00 40.99      1LGA2727
ATOM   2547  CA  LYS A 342      -5.117  19.763  13.230  1.00 43.14      1LGA2728
ATOM   2548  C   LYS A 342      -4.195  19.807  14.456  1.00 44.65      1LGA2729
ATOM   2549  O   LYS A 342      -3.865  18.703  14.917  1.00 47.35      1LGA2730
ATOM   2550  CB  LYS A 342      -6.377  18.984  13.630  1.00 43.08      1LGA2731
ATOM   2551  N   ALA A 343      -3.806  20.989  14.965  1.00 45.10      1LGA2732
ATOM   2552  CA  ALA A 343      -2.909  21.202  16.116  1.00 47.37      1LGA2733
ATOM   2553  C   ALA A 343      -1.415  21.006  15.758  1.00 48.77      1LGA2734
ATOM   2554  O   ALA A 343      -0.565  20.716  16.626  1.00 49.99      1LGA2735
ATOM   2555  CB  ALA A 343      -3.289  20.249  17.289  1.00 47.14      1LGA2736
ATOM   2556  OXT ALA A 343      -1.114  21.138  14.562  1.00 48.33      1LGA2737
TER    2557      ALA A 343                                              1LGA2738
HETATM 2558 FE   HEM A 396      11.238  21.908   1.399  1.00  9.46      1LGA2739
HETATM 2559  CHA HEM A 396       7.981  22.349   2.238  1.00  3.91      1LGA2740
HETATM 2560  CHB HEM A 396      11.583  25.298   1.012  1.00  6.24      1LGA2741
HETATM 2561  CHC HEM A 396      14.537  21.563   0.822  1.00  2.81      1LGA2742
HETATM 2562  CHD HEM A 396      11.009  18.617   2.133  1.00  5.82      1LGA2743
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: : : : : : : : :
HETATM 2614  O7  NAG A 397      16.814   7.322 -19.428  1.00 35.09      1LGA2795
HETATM 2615 CA    CA A 398       4.529  13.785  -6.686  1.00  5.48      1LGA2796
HETATM 2616 CA    CA A 399      19.401  19.415  14.512  1.00  9.45      1LGA2797
ATOM   2617  N   ALA B   1      17.814  60.797  63.727  1.00  6.50      1LGA2798
ATOM   2618  CA  ALA B   1      18.531  60.847  64.974  1.00 11.94      1LGA2799
ATOM   2619  C   ALA B   1      19.977  60.900  64.556  1.00 11.16      1LGA2800
ATOM   2620  O   ALA B   1      20.283  60.204  63.589  1.00 13.39      1LGA2801
ATOM   2621  CB  ALA B   1      18.376  59.582  65.801  1.00  6.99      1LGA2802
ATOM   2622  N   THR B   2      20.873  61.644  65.211  1.00 13.36      1LGA2803
ATOM   2623  CA  THR B   2      22.280  61.671  64.813  1.00 12.64      1LGA2804
ATOM   2624  C   THR B   2      23.049  60.911  65.873  1.00  9.36      1LGA2805
ATOM   2625  O   THR B   2      22.939  61.224  67.054  1.00 10.12      1LGA2806
ATOM   2626  CB  THR B   2      22.812  63.089  64.755  1.00 16.15      1LGA2807
ATOM   2627  OG1 THR B   2      21.820  63.867  64.092  1.00 20.97      1LGA2808
ATOM   2628  CG2 THR B   2      24.144  63.170  64.029  1.00 18.37      1LGA2809
ATOM   2629  N   CYS B   3      23.748  59.856  65.500  1.00  8.07      1LGA2810
ATOM   2630  CA  CYS B   3      24.478  59.075  66.440  1.00  7.54      1LGA2811
ATOM   2631  C   CYS B   3      25.717  59.832  66.846  1.00  9.82      1LGA2812
ATOM   2632  O   CYS B   3      26.077  60.905  66.326  1.00  8.47      1LGA2813
ATOM   2633  CB  CYS B   3      24.832  57.745  65.818  1.00  8.50      1LGA2814
ATOM   2634  SG  CYS B   3      23.347  56.937  65.167  1.00 12.77      1LGA2815
: : : : : : : : :
: : : : : : : : :
: : : : : : : : :
ATOM   5138  N   PRO B 339      40.059  28.512  53.050  1.00 23.99      1LGA5319
ATOM   5139  CA  PRO B 339      40.145  27.938  54.397  1.00 25.06      1LGA5320
ATOM   5140  C   PRO B 339      39.087  28.391  55.420  1.00 26.12      1LGA5321
ATOM   5141  O   PRO B 339      38.962  29.608  55.673  1.00 25.30      1LGA5322
ATOM   5142  CB  PRO B 339      41.559  28.284  54.803  1.00 25.29      1LGA5323
ATOM   5143  CG  PRO B 339      41.882  29.532  53.985  1.00 24.38      1LGA5324
ATOM   5144  CD  PRO B 339      41.322  29.131  52.644  1.00 23.51      1LGA5325
ATOM   5145  N   PRO B 340      38.308  27.472  56.016  1.00 25.96      1LGA5326
ATOM   5146  CA  PRO B 340      37.362  27.794  57.093  1.00 26.41      1LGA5327
ATOM   5147  C   PRO B 340      37.969  28.531  58.289  1.00 27.17      1LGA5328
ATOM   5148  O   PRO B 340      39.189  28.552  58.494  1.00 24.88      1LGA5329
ATOM   5149  CB  PRO B 340      36.749  26.445  57.478  1.00 27.03      1LGA5330
ATOM   5150  CG  PRO B 340      37.665  25.396  56.845  1.00 27.36      1LGA5331
ATOM   5151  CD  PRO B 340      38.183  26.074  55.583  1.00 26.42      1LGA5332
ATOM   5152  N   HIS B 341      37.095  29.237  59.003  1.00 28.61      1LGA5333
ATOM   5153  CA  HIS B 341      37.496  29.859  60.259  1.00 32.28      1LGA5334
ATOM   5154  C   HIS B 341      37.844  28.802  61.331  1.00 34.65      1LGA5335
ATOM   5155  O   HIS B 341      37.088  27.828  61.492  1.00 35.64      1LGA5336
ATOM   5156  CB  HIS B 341      36.362  30.739  60.747  1.00 32.47      1LGA5337
ATOM   5157  CG  HIS B 341      36.391  31.043  62.233  1.00 31.43      1LGA5338
ATOM   5158  ND1 HIS B 341      37.078  31.989  62.864  1.00 32.02      1LGA5339
ATOM   5159  CD2 HIS B 341      35.699  30.295  63.162  1.00 33.01      1LGA5340
ATOM   5160  CE1 HIS B 341      36.826  31.832  64.144  1.00 33.25      1LGA5341
ATOM   5161  NE2 HIS B 341      36.002  30.816  64.313  1.00 32.87      1LGA5342
ATOM   5162  OXT HIS B 341      38.818  29.036  62.054  1.00 36.98      1LGA5343


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