Contacts of the helix formed by residues 70 - 91 (chain S) in PDB entry 3J9X


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 GLY 70 (chain S).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1238    A      3.4    26.3    +      -       -      +
    1248    T      4.1     1.8    +      -       -      -
     69S  THR*     1.3    77.0    -      -       -      +
     71S  PRO*     1.3    69.8    -      -       -      +
     73S  ARG*     2.9    32.1    +      -       -      +
     90U  ILE*     5.5     0.6    -      -       -      +
     99U  MET*     5.3     0.6    -      -       -      +
    111V  PHE*     3.6    19.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 71 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1238    A      3.7    29.8    -      -       +      +
    1248    T      3.6    27.4    -      -       -      +
     69S  THR      4.4     0.4    -      -       -      +
     70S  GLY*     1.3    82.6    -      -       -      +
     72S  ASN*     1.3    65.5    +      -       -      +
     73S  ARG      3.1     0.9    -      -       -      -
     74S  ALA*     3.0     6.4    +      -       +      +
     75S  ILE*     3.0    23.9    +      -       -      +
     71V  PRO*     3.6    19.6    -      -       +      +
     74V  ALA      4.8     0.9    -      -       -      -
     75V  ILE*     3.6    37.9    -      -       +      +
    107V  TYR*     6.5     1.1    -      -       +      -
    111V  PHE*     4.6     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 72 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68S  ILE*     3.5    15.9    -      -       +      -
     69S  THR*     3.3    14.6    +      -       -      +
     70S  GLY      3.0     1.0    -      -       -      -
     71S  PRO*     1.3    74.8    -      -       -      +
     73S  ARG*     1.3    64.1    +      -       -      +
     75S  ILE*     3.3    18.6    +      -       +      +
     76S  TYR*     3.1    26.3    -      -       +      -
     72V  ASN*     3.1    24.8    -      -       -      +
     75V  ILE*     3.5    10.8    -      -       -      +
    111V  PHE      3.2    26.1    +      -       -      -
    112V  ASN*     4.6    10.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 73 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1238    A      2.9    37.7    +      -       -      +
     60S  SER*     2.7    46.5    +      -       -      +
     63S  LEU*     3.5    17.3    -      -       +      +
     64S  THR*     3.0    31.7    +      -       -      +
     68S  ILE*     2.8    56.5    +      -       +      +
     69S  THR*     3.9     8.1    -      -       -      +
     70S  GLY      2.9    14.1    +      -       -      +
     72S  ASN*     1.3    76.0    -      -       -      +
     74S  ALA*     1.3    59.3    +      -       -      +
     76S  TYR      3.1     3.1    +      -       -      -
     77S  GLN*     2.8    32.2    +      -       -      +
     89U  ARG      4.6     0.4    +      -       -      -
     90U  ILE*     3.7    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 74 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2277    A      4.1    25.2    -      -       +      +
    1228    T      4.3     5.6    -      -       -      +
    1238    A      3.8    38.5    +      -       +      +
     70S  GLY      3.7     0.8    +      -       -      -
     71S  PRO      3.0    11.1    +      -       -      +
     73S  ARG*     1.3    80.3    -      -       -      +
     75S  ILE*     1.3    61.8    +      -       -      +
     77S  GLN*     3.6     8.9    -      -       -      +
     78S  GLY*     2.9    21.1    +      -       -      -
     71V  PRO*     4.8     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 75 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71S  PRO      3.0    13.9    +      -       -      +
     72S  ASN*     3.4    22.4    -      -       +      +
     73S  ARG      3.2     0.4    -      -       -      -
     74S  ALA*     1.3    77.4    -      -       -      +
     76S  TYR*     1.3    71.0    +      -       +      +
     78S  GLY*     3.3     0.9    +      -       -      -
     79S  PHE*     3.2    16.3    +      -       -      +
    107S  TYR*     3.5    31.7    -      -       +      -
    111S  PHE*     4.8    11.4    -      -       +      +
    112S  ASN      6.3     0.2    -      -       -      -
    113S  ALA*     4.2    19.5    -      -       +      -
     71V  PRO*     3.5    27.4    -      -       +      -
     72V  ASN*     3.5    35.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 76 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59S  VAL*     4.3     5.3    -      -       -      +
     63S  LEU*     3.6    33.0    -      -       +      -
     68S  ILE*     4.0    18.4    -      -       +      +
     72S  ASN*     3.1    27.8    +      -       +      -
     73S  ARG      3.1     3.6    +      -       -      +
     75S  ILE*     1.3    80.3    -      -       +      +
     77S  GLN*     1.3    60.8    +      -       -      +
     79S  PHE*     3.2     7.3    +      -       -      +
     80S  GLY*     2.9    25.6    +      -       -      -
    112S  ASN      5.2     0.3    +      -       -      -
    113S  ALA*     4.0     7.9    -      -       +      -
    114S  ASN*     2.9    38.1    +      -       -      +
    117S  VAL*     3.7    27.7    -      -       +      +
    118S  LEU*     3.6    31.2    -      -       +      -
    121S  VAL*     4.4     9.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 77 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1228    T      3.2    32.6    +      -       +      +
    1238    A      3.2    20.7    +      -       -      +
     55S  VAL*     5.2     0.5    -      -       -      +
     56S  ASN*     3.1    42.4    +      -       -      +
     59S  VAL*     3.3    24.4    -      -       -      +
     60S  SER*     3.4    11.7    -      -       -      +
     63S  LEU*     4.0     3.3    -      -       +      +
     73S  ARG      2.8    22.6    +      -       -      +
     74S  ALA*     3.6     7.6    -      -       -      +
     76S  TYR*     1.3    76.5    -      -       -      +
     78S  GLY*     1.3    55.9    +      -       -      +
     80S  GLY*     3.2     1.6    +      -       -      -
     81S  LEU*     2.9    36.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 78 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2277    A      5.6     1.6    -      -       -      -
    2287    T      3.7    30.5    +      -       -      +
    1228    T      5.3     0.2    +      -       -      -
     74S  ALA      2.9    14.4    +      -       -      -
     75S  ILE      3.8     3.6    -      -       -      -
     76S  TYR      3.2     0.2    -      -       -      -
     77S  GLN*     1.3    76.3    -      -       -      +
     79S  PHE*     1.3    62.1    +      -       -      +
     81S  LEU*     3.3     5.6    +      -       -      +
     82S  LYS*     3.0    23.4    +      -       -      +
    107S  TYR*     3.5    11.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 79 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75S  ILE      3.2    12.2    +      -       -      +
     76S  TYR      3.4     8.5    -      -       -      +
     78S  GLY*     1.3    75.7    -      -       -      +
     80S  GLY*     1.3    65.0    +      -       -      +
     82S  LYS*     3.2     6.2    +      -       -      +
     83S  VAL*     3.1    28.8    +      -       +      +
    100S  ILE*     5.0     1.1    -      -       +      -
    103S  LEU*     3.6    31.4    -      -       +      -
    104S  LYS*     3.8    28.5    -      -       +      -
    107S  TYR*     3.5    26.9    +      +       +      -
    118S  LEU*     3.3    50.5    -      -       +      -
    121S  VAL*     3.8    16.4    -      -       +      -
    122S  VAL*     3.6    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 80 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55S  VAL*     4.1     6.5    -      -       -      -
     59S  VAL*     4.7     2.2    -      -       -      -
     76S  TYR      2.9    12.4    +      -       -      -
     77S  GLN      3.7     2.9    -      -       -      -
     79S  PHE*     1.3    75.9    -      -       -      +
     81S  LEU*     1.3    62.4    +      -       -      +
     83S  VAL*     3.1     3.3    +      -       -      -
     84S  ALA*     3.1    19.4    +      -       -      +
    121S  VAL*     3.6    14.4    -      -       -      -
    125S  ILE*     3.2    29.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 81 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2287    T      3.6    24.2    -      -       +      +
    2297    A      3.4    31.1    -      -       -      +
    1218    A      4.9     6.5    -      -       +      -
    1228    T      5.2     2.5    -      -       -      +
     52S  PHE*     3.7    37.0    -      -       +      +
     55S  VAL*     4.3     7.1    -      -       +      +
     56S  ASN*     3.3    30.1    -      -       -      +
     77S  GLN*     2.9    25.8    +      -       +      +
     78S  GLY*     3.6     4.7    -      -       -      +
     80S  GLY*     1.3    75.8    -      -       -      +
     82S  LYS*     1.3    56.4    +      -       -      +
     84S  ALA*     3.3     6.7    +      -       -      +
     85S  ARG*     2.9    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 82 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2287    T      4.0    12.7    +      -       -      +
    2297    A      2.9    31.0    +      -       -      +
    1128    T      5.6     1.6    -      -       -      -
    1138    A      3.8    11.9    +      -       -      -
     78S  GLY      3.0    13.6    +      -       -      +
     79S  PHE*     3.4    10.3    -      -       -      +
     81S  LEU*     1.3    74.7    -      -       -      +
     83S  VAL*     1.3    65.5    +      -       -      +
     85S  ARG*     3.2    11.2    +      -       -      +
     86S  ALA*     3.1    23.7    +      -       -      +
     99S  MET*     4.7    17.0    -      -       +      -
    103S  LEU*     3.5    29.1    -      -       +      +
    106S  TYR*     5.5     4.8    -      -       -      -
    107S  TYR*     5.2     1.3    -      -       +      -
    106T  TYR*     2.7    37.3    +      -       -      -
    111T  PHE*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 83 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79S  PHE*     3.1    35.6    +      -       +      +
     80S  GLY*     3.1     8.5    +      -       -      +
     82S  LYS*     1.3    78.0    -      -       -      +
     84S  ALA*     1.3    62.4    +      -       -      +
     86S  ALA*     3.4     5.7    +      -       -      +
     87S  LEU*     3.0    21.1    +      -       +      +
     96S  LEU*     4.3     4.6    -      -       +      +
     99S  MET*     6.3     0.7    -      -       -      -
    100S  ILE*     4.3    18.4    -      -       +      -
    103S  LEU*     3.6    18.2    -      -       +      -
    122S  VAL*     4.5     9.4    -      -       +      -
    125S  ILE*     3.7    28.3    -      -       +      -
    126S  THR*     4.3    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 84 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51S  LYS      5.5     0.7    -      -       -      +
     52S  PHE*     3.6    21.1    -      -       +      -
     55S  VAL*     4.0    20.4    -      -       +      -
     80S  GLY      3.1     8.2    +      -       -      +
     81S  LEU*     3.5     7.9    -      -       -      +
     83S  VAL*     1.3    79.5    -      -       -      +
     85S  ARG*     1.3    65.2    +      -       -      +
     87S  LEU*     3.1    11.7    +      -       +      +
     88S  ASN*     2.9    27.2    +      -       -      +
    125S  ILE*     4.5     8.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 85 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2297    A      3.0    36.5    +      -       -      +
    2307    T      3.1    33.9    +      -       -      +
    1128    T      3.8    34.8    +      -       -      +
    1138    A      3.9    20.3    +      -       -      -
     52S  PHE*     3.6    10.3    -      -       -      -
     81S  LEU      2.9    14.2    +      -       -      +
     82S  LYS*     3.4    15.7    -      -       +      +
     84S  ALA*     1.3    76.5    -      -       -      +
     86S  ALA*     1.3    63.1    -      -       -      +
     88S  ASN*     3.1     5.5    +      -       -      +
     89S  ARG*     3.0    53.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 86 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1128    T      5.4     3.4    -      -       -      +
     82S  LYS*     3.1    12.4    +      -       -      +
     83S  VAL*     3.7     9.2    -      -       -      +
     85S  ARG*     1.3    77.3    -      -       -      +
     87S  LEU*     1.3    58.9    +      -       -      +
     89S  ARG*     4.5     2.9    -      -       -      +
     90S  ILE*     2.7    50.9    +      -       +      +
     96S  LEU*     3.9     9.0    -      -       +      -
     99S  MET*     3.8    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 87 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83S  VAL*     3.0    14.1    +      -       +      +
     84S  ALA*     3.1    12.3    +      -       +      +
     86S  ALA*     1.3    76.7    -      -       -      +
     88S  ASN*     1.3    66.0    +      -       -      +
     91S  GLY*     2.7    31.6    +      -       -      +
     92S  SER*     3.6    32.5    -      -       -      +
     96S  LEU*     3.8    23.5    -      -       +      +
    125S  ILE*     4.8    22.7    -      -       +      +
    126S  THR*     6.1     2.5    -      -       +      -
     57x  GLU*     5.8     3.8    -      -       -      +
     58x  ASN*     6.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 88 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2307    T      5.9     1.1    -      -       -      +
      7R  SER*     3.8    17.4    +      -       -      +
     48S  ASN*     4.9     5.6    +      -       -      -
     51S  LYS*     3.9    29.8    +      -       -      +
     52S  PHE*     3.3    34.5    -      -       +      -
     84S  ALA*     2.9    13.3    +      -       -      +
     85S  ARG*     3.1     7.8    +      -       -      +
     87S  LEU*     1.3    85.2    -      -       -      +
     89S  ARG*     1.3    63.4    +      -       +      +
     90S  ILE      3.7     0.3    +      -       -      -
     91S  GLY*     4.8     0.7    +      -       -      -
     57x  GLU*     5.2     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 89 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    2307    T      3.8    18.7    +      -       -      +
    2317    A      4.3    14.6    +      -       -      -
    1108    T      4.7     3.8    +      -       -      -
    1118    A      3.6    25.6    +      -       -      +
    1128    T      3.5    36.8    +      -       -      +
     60Q  SER*     4.7     2.3    +      -       -      -
     73Q  ARG*     4.6     3.8    +      -       -      -
      7R  SER*     3.6    36.1    -      -       -      +
      8R  ARG*     5.5     3.6    -      -       -      +
     85S  ARG*     3.0    54.0    +      -       -      +
     86S  ALA*     4.2     1.8    -      -       -      +
     88S  ASN*     1.3    80.2    -      -       +      +
     90S  ILE*     1.3    62.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 90 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1118    A      5.4     0.9    -      -       -      +
    1128    T      4.4    10.5    -      -       -      +
     60Q  SER*     4.7     2.5    +      -       -      -
     64Q  THR*     2.6    36.0    +      -       -      +
     69Q  THR*     4.4    18.2    -      -       +      -
     70Q  GLY      5.5     0.4    -      -       -      +
     73Q  ARG*     3.7    20.1    +      -       -      +
     86S  ALA*     2.7    27.8    +      -       +      +
     88S  ASN      5.0     0.4    -      -       -      -
     89S  ARG*     1.3    80.4    -      -       -      +
     91S  GLY*     1.3    68.6    +      -       -      +
     95S  ALA*     3.5    26.2    -      -       +      +
     96S  LEU*     4.2     4.7    -      -       -      +
     99S  MET*     3.7    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 91 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64Q  THR*     3.8     1.8    -      -       -      +
     86S  ALA      3.6     0.6    +      -       -      -
     87S  LEU*     2.7    30.8    +      -       -      -
     88S  ASN      4.6     0.2    -      -       -      -
     90S  ILE*     1.3    90.2    -      -       -      +
     92S  SER*     1.3    67.7    +      -       -      +
     96S  LEU*     3.6    10.4    -      -       -      +
----------------------------------------------------------
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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