Contacts of the helix formed by residues 72 - 96 (chain F) in PDB entry 5JRE


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with PHE 72 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109E  TRP*     3.9    34.3    -      +       -      -
     15F  LEU*     3.3    37.7    -      -       +      -
     18F  LYS*     4.8     1.1    -      -       +      -
     19F  LYS*     3.8    36.8    -      -       +      -
     22F  ILE*     3.9    15.2    -      -       +      +
     66F  LEU*     3.5     7.3    -      -       -      +
     69F  TYR*     2.9    24.6    +      +       +      +
     71F  MET*     1.3   108.8    -      -       +      +
     73F  TYR*     1.3    64.7    +      -       -      +
     74F  SER      3.2     2.7    -      -       -      +
     75F  ASN*     3.0    34.1    +      -       +      +
     76F  GLY      3.4     6.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 73 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70E  PRO*     3.8    23.3    -      -       +      +
     71E  MET*     3.5    41.5    -      -       +      +
     73E  TYR*     5.6     0.4    -      -       +      -
     66F  LEU*     3.8    33.1    -      -       +      +
     69F  TYR      3.9     0.8    +      -       -      -
     70F  PRO*     3.1    21.9    +      -       +      +
     71F  MET      3.5     0.2    -      -       -      -
     72F  PHE*     1.3    77.8    -      -       -      +
     74F  SER*     1.3    67.8    +      -       -      +
     76F  GLY*     3.1    12.8    +      -       -      -
     77F  PHE*     3.1    36.6    +      +       -      -
     80F  LEU*     5.9     0.9    -      -       +      -
    107F  ASP*     2.7    37.3    +      -       -      -
    109F  TRP*     4.3     0.8    -      +       -      +
    110F  VAL*     3.6    13.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 74 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74E  SER*     5.9     7.4    -      -       -      -
     71F  MET      4.5     6.8    +      -       -      -
     73F  TYR*     1.3    86.0    -      -       -      +
     75F  ASN*     1.3    72.3    +      -       -      +
     76F  GLY      3.4     0.3    +      -       -      -
     77F  PHE*     3.5    16.8    +      -       -      +
     78F  ILE*     4.8     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 75 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19F  LYS*     3.7    25.5    -      -       +      +
     22F  ILE*     4.0    11.7    -      -       +      +
     23F  VAL*     3.8    27.1    -      -       +      +
     26F  SER*     3.7    17.7    +      -       -      -
     71F  MET      4.3     0.9    -      -       -      +
     72F  PHE*     3.0    38.7    +      -       +      +
     74F  SER*     1.3    83.0    +      -       -      +
     76F  GLY*     1.3    57.6    +      -       -      +
     77F  PHE      3.5     0.2    -      -       -      -
     78F  ILE*     5.3     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 76 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22F  ILE*     3.8    15.5    -      -       -      +
     26F  SER*     3.9     3.7    +      -       -      -
     62F  GLN*     3.9    13.2    +      -       -      -
     66F  LEU*     4.3    11.9    -      -       -      -
     72F  PHE      3.4     3.8    +      -       -      -
     73F  TYR      3.1     7.6    +      -       -      -
     75F  ASN*     1.3    77.9    -      -       -      +
     77F  PHE*     1.3    65.2    +      -       -      +
     78F  ILE      3.4     2.1    +      -       -      -
     79F  GLY*     3.4     2.9    +      -       -      -
     80F  LEU*     3.3    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 77 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66F  LEU*     5.5     0.7    -      -       -      -
     73F  TYR*     3.1    37.3    +      +       -      +
     74F  SER*     3.5    18.2    +      -       -      +
     75F  ASN      3.5     0.2    -      -       -      -
     76F  GLY*     1.3    77.4    -      -       -      +
     78F  ILE*     1.3    68.8    +      -       +      +
     80F  LEU*     3.1     7.3    +      -       -      +
     81F  GLN*     2.9    49.5    +      -       +      +
    109F  TRP*     3.7    17.9    -      +       -      -
    110F  VAL*     3.4    28.9    -      -       +      +
    113F  PHE*     3.7    42.4    -      +       +      -
----------------------------------------------------------
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Residues in contact with ILE 78 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26F  SER*     4.4     5.3    +      -       -      +
     30F  SER*     5.7     3.1    -      -       -      -
     74F  SER      5.2     4.7    -      -       -      +
     75F  ASN      5.3     0.6    +      -       -      -
     76F  GLY      3.4     0.6    -      -       -      -
     77F  PHE*     1.3    86.9    -      -       +      +
     79F  GLY*     1.3    58.5    +      -       -      +
     81F  GLN*     3.2    22.4    +      -       -      +
     82F  GLU*     2.9    48.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 79 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26F  SER*     3.0    39.2    +      -       -      -
     29F  MET*     3.4    24.3    -      -       -      +
     30F  SER*     4.7     1.8    -      -       -      -
     76F  GLY      3.4     1.5    +      -       -      -
     77F  PHE      3.3     0.6    -      -       -      -
     78F  ILE*     1.3    78.4    -      -       -      +
     80F  LEU*     1.3    56.5    +      -       -      +
     82F  GLU*     3.4     6.3    +      -       -      +
     83F  TYR*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 80 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29F  MET*     3.8    20.6    -      -       +      -
     59F  ALA*     4.3     4.3    -      -       -      +
     62F  GLN*     4.3    10.1    -      -       +      -
     63F  ILE*     3.8    35.4    -      -       +      -
     66F  LEU*     3.6    31.9    -      -       +      -
     73F  TYR*     5.9     1.3    -      -       +      -
     76F  GLY      3.3     8.9    +      -       -      +
     77F  PHE*     3.1     8.3    +      -       -      +
     79F  GLY*     1.3    73.6    -      -       -      +
     81F  GLN*     1.3    65.7    +      -       -      +
     83F  TYR*     3.2    15.5    +      -       +      +
     84F  VAL*     3.0    26.9    +      -       -      +
    106F  VAL*     4.4     3.8    -      -       +      -
    110F  VAL*     4.1    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 81 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77F  PHE*     2.9    37.7    +      -       +      +
     78F  ILE*     3.2    23.5    +      -       -      +
     80F  LEU*     1.3    77.5    -      -       -      +
     82F  GLU*     1.3    59.9    +      -       +      +
     84F  VAL      3.3     1.8    +      -       -      +
     85F  GLU*     3.1    24.6    +      -       -      +
    110F  VAL*     4.5     9.7    -      -       +      +
    113F  PHE*     3.5    19.1    +      -       -      +
    114F  GLY*     3.6    24.8    -      -       -      +
    117F  ASP*     2.7    27.2    +      -       -      +
    165F  LYS*     3.8    12.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 82 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30F  SER*     3.3    18.9    +      -       -      +
     33F  SER*     3.0    32.5    +      -       -      +
     34F  LYS*     2.8    34.7    +      -       -      +
     78F  ILE*     2.9    36.4    +      -       +      +
     79F  GLY      3.8     4.7    -      -       -      +
     80F  LEU      3.3     0.2    -      -       -      -
     81F  GLN*     1.3    75.8    -      -       +      +
     83F  TYR*     1.3    59.3    +      -       -      +
     85F  GLU*     3.4    16.6    +      -       -      +
     86F  ALA*     3.0    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 83 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29F  MET*     3.7    11.4    -      -       +      -
     33F  SER*     4.4     0.6    -      -       -      -
     55F  LEU*     3.8    21.8    -      -       +      -
     56F  THR*     4.1    22.0    +      -       -      +
     59F  ALA*     3.6    32.0    -      -       +      +
     63F  ILE*     4.8     1.1    -      -       +      +
     79F  GLY      3.0    14.1    +      -       -      +
     80F  LEU*     3.3    20.2    -      -       +      +
     82F  GLU*     1.3    73.4    -      -       -      +
     84F  VAL*     1.3    67.8    +      -       +      +
     86F  ALA*     3.4     0.7    +      -       -      +
     87F  LEU*     3.0    52.3    +      -       +      +
    103F  GLU      4.9     0.2    +      -       -      -
    104F  LEU*     2.7    49.3    +      -       +      +
    106F  VAL*     3.8    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 84 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80F  LEU      3.0    17.5    +      -       -      +
     81F  GLN      3.3     7.6    +      -       -      +
     83F  TYR*     1.3    77.2    -      -       +      +
     85F  GLU*     1.3    57.8    +      -       -      +
     87F  LEU*     3.9     0.5    -      -       -      +
     88F  ALA*     2.9    29.9    +      -       +      +
    104F  LEU*     3.9    25.1    -      -       +      +
    106F  VAL*     3.9    20.9    -      -       +      -
    110F  VAL*     3.9    22.0    -      -       +      -
    111F  TYR*     3.9    28.3    -      -       +      +
    114F  GLY*     4.1     2.7    -      -       -      -
    115F  ILE*     4.0    17.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 85 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33F  SER*     5.7     0.7    -      -       -      -
     37F  ILE*     3.9     9.8    -      -       +      +
     81F  GLN*     3.1    16.4    +      -       -      +
     82F  GLU*     3.7    20.2    -      -       -      +
     83F  TYR      3.3     0.2    -      -       -      -
     84F  VAL*     1.3    78.4    -      -       -      +
     86F  ALA*     1.3    61.0    +      -       -      +
     88F  ALA*     3.5     2.4    +      -       -      +
     89F  LEU*     3.1    21.8    +      -       -      +
    114F  GLY      3.8    13.4    +      -       -      +
    117F  ASP*     3.8    38.7    -      -       +      +
    118F  ILE*     3.9     8.9    -      -       +      +
    121F  GLU*     2.9    40.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 86 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33F  SER*     3.8    32.8    -      -       -      +
     36F  LEU*     4.0    18.3    -      -       +      +
     37F  ILE*     3.9    15.7    -      -       +      +
     40F  MET*     5.9     0.2    -      -       -      +
     55F  LEU*     4.2     2.7    -      -       +      -
     82F  GLU      3.0    19.0    +      -       -      +
     83F  TYR      3.9     3.1    -      -       -      +
     85F  GLU*     1.3    75.1    -      -       -      +
     87F  LEU*     1.3    60.1    +      -       -      +
     89F  LEU*     3.3     3.6    +      -       -      +
     90F  TYR*     2.9    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36F  LEU*     4.0     9.9    -      -       +      -
     52F  LYS*     3.7    35.9    -      -       +      -
     55F  LEU*     3.7    18.8    -      -       +      -
     56F  THR*     4.5     8.3    -      -       -      +
     83F  TYR*     3.0    50.6    +      -       +      +
     84F  VAL      4.1     1.1    -      -       -      +
     86F  ALA*     1.3    73.8    -      -       -      +
     88F  ALA*     1.3    60.2    +      -       -      +
     90F  TYR*     3.2     5.8    +      -       +      +
     91F  TYR*     2.9    48.9    +      -       +      -
     99F  PRO*     4.4     0.9    -      -       -      -
    104F  LEU*     3.7    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 88 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84F  VAL*     2.9    19.7    +      -       +      +
     85F  GLU      3.6     0.2    -      -       -      +
     87F  LEU*     1.3    79.4    -      -       -      +
     89F  LEU*     1.3    56.4    +      -       -      +
     91F  TYR*     3.4     0.9    +      -       -      -
     92F  TYR*     2.8    29.8    +      -       -      +
     97F  ARG      4.0     3.5    -      -       -      +
     98F  ILE*     4.1     8.9    -      -       +      +
     99F  PRO*     3.7    22.1    -      -       +      +
    115F  ILE*     4.1    14.1    -      -       +      -
    118F  ILE*     3.6    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 89 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37F  ILE*     3.7    43.7    -      -       +      +
     40F  MET*     4.7     2.9    -      -       +      -
     41F  ILE*     4.4     6.7    -      -       +      -
     85F  GLU      3.1    14.4    +      -       -      +
     86F  ALA*     3.6     8.3    -      -       -      +
     87F  LEU      3.3     0.2    -      -       -      -
     88F  ALA*     1.3    71.9    -      -       -      +
     90F  TYR*     1.3    67.9    +      -       -      +
     92F  TYR*     3.6     6.0    -      -       +      +
     93F  ILE*     3.0    50.7    +      -       +      +
    118F  ILE*     4.9     4.4    -      -       +      +
    121F  GLU*     3.9    37.9    -      -       +      +
    122F  ILE*     4.2    17.0    -      -       +      -
    125F  LYS*     5.0     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 90 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36F  LEU*     4.1    12.8    -      -       +      -
     40F  MET*     3.6    42.1    -      -       +      +
     48F  ALA*     4.6     4.3    -      -       +      -
     49F  ASP*     2.7    28.3    +      -       -      -
     52F  LYS*     3.4    43.4    +      -       +      +
     86F  ALA      2.9    14.0    +      -       -      +
     87F  LEU*     3.3    13.7    -      -       +      +
     89F  LEU*     1.3    78.0    -      -       -      +
     91F  TYR*     1.3    77.6    +      +       -      +
     94F  LYS*     2.9    72.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 91 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52F  LYS*     3.4    25.1    +      -       -      -
     87F  LEU*     2.9    45.6    +      -       +      +
     90F  TYR*     1.3    90.8    -      +       -      +
     92F  TYR*     1.3    62.9    +      -       -      +
     94F  LYS*     4.6     1.1    -      -       -      -
     95F  GLU*     2.9    50.2    +      -       +      +
     96F  ASN      3.0     6.4    +      -       -      -
     97F  ARG*     3.1    45.9    +      -       +      +
     99F  PRO*     4.0    25.4    -      -       +      -
    103F  GLU*     4.3    11.9    +      -       +      +
    104F  LEU*     5.1     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 92 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1E  MET*     3.9    27.6    -      -       +      -
     88F  ALA      2.8    19.6    +      -       -      +
     89F  LEU*     3.2     9.2    +      -       +      +
     91F  TYR*     1.3    77.6    -      -       -      +
     93F  ILE*     1.3    64.9    +      -       +      +
     96F  ASN*     3.1    30.5    +      -       -      +
     97F  ARG      3.1    15.0    +      -       -      +
     98F  ILE*     4.2     9.0    -      -       +      -
    118F  ILE*     6.1     0.2    -      -       +      -
    122F  ILE*     3.9    36.8    -      -       +      -
    125F  LYS*     5.9     0.7    -      -       +      -
    137F  TYR*     3.6    26.4    +      +       -      -
    140F  LYS*     4.2     5.7    +      -       -      +
    141F  ALA*     3.6    16.5    +      -       -      +
    144F  ASP*     2.6    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 93 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40F  MET*     3.8    36.1    -      -       +      +
     41F  ILE*     4.7     0.7    -      -       -      +
     45F  TYR*     3.8    23.3    -      -       +      +
     89F  LEU*     3.0    46.2    +      -       +      +
     92F  TYR*     1.3    82.6    -      -       +      +
     94F  LYS*     1.3    63.6    +      -       -      +
     96F  ASN*     4.5     1.0    +      -       -      -
    125F  LYS*     4.0    30.3    -      -       +      -
    137F  TYR*     4.0    20.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 94 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40F  MET*     4.5     8.3    -      -       +      -
     45F  TYR*     6.3     0.9    -      -       -      -
     49F  ASP*     5.0     2.5    +      -       -      -
     90F  TYR*     2.9    57.2    +      -       +      +
     91F  TYR*     5.6     0.6    -      -       -      -
     93F  ILE*     1.3    81.9    -      -       -      +
     95F  GLU*     1.3    81.1    +      -       +      +
     96F  ASN      3.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 95 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91F  TYR*     2.9    34.2    +      -       +      +
     94F  LYS*     1.3   101.9    +      -       +      +
     96F  ASN*     1.3    72.9    +      -       -      +
     97F  ARG*     2.8    46.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 96 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1E  MET*     5.8     2.3    -      -       -      +
     91F  TYR      3.0     2.6    +      -       -      -
     92F  TYR*     3.1    25.3    +      -       -      +
     93F  ILE      4.5     0.8    +      -       -      -
     94F  LYS      3.7     1.2    -      -       -      -
     95F  GLU*     1.3    80.2    -      -       -      +
     97F  ARG*     1.3    58.9    +      -       -      +
    140F  LYS*     2.6    39.3    +      -       -      +
    144F  ASP*     4.2     2.6    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il