Contacts of the helix formed by residues 129 - 154 (chain W) in PDB entry 4N3E


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 ASN 129 (chain W).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93W  ARG*     3.5    21.4    -      -       -      +
     95W  ASN*     4.1     7.1    +      -       -      +
    127W  THR      3.6     2.4    +      -       -      -
    128W  VAL*     1.3    72.0    -      -       -      +
    130W  GLU*     1.3    66.4    +      -       -      +
    131W  GLU*     2.8    35.4    +      -       -      +
    132W  GLU*     2.9    40.3    +      -       -      +
    133W  VAL*     3.6     4.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 130 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4W  TYR*     3.7    30.1    +      -       +      +
    128W  VAL*     3.5     6.1    +      -       -      +
    129W  ASN*     1.3    69.5    +      -       -      +
    131W  GLU*     1.3    70.3    -      -       -      +
    133W  VAL*     3.0    20.3    +      -       +      +
    134W  LYS*     3.1    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 131 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93W  ARG*     3.4    22.4    +      -       -      +
    129W  ASN*     2.8    29.9    +      -       -      +
    130W  GLU*     1.3    77.2    -      -       -      +
    132W  GLU*     1.3    57.4    +      -       -      +
    134W  LYS*     3.1    20.2    +      -       -      +
    135W  ILE*     3.3    26.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 132 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91W  VAL      5.8     0.9    -      -       -      +
     92W  LEU      4.8     4.5    -      -       -      +
     93W  ARG*     2.7    42.8    +      -       -      +
     95W  ASN*     3.3     8.8    +      -       -      +
     96W  ILE*     2.6    43.5    -      -       +      +
    120W  TYR*     3.4    24.4    +      -       +      -
    129W  ASN*     2.9    40.9    +      -       -      +
    131W  GLU*     1.3    71.5    -      -       -      +
    133W  VAL*     1.3    63.4    +      -       +      +
    135W  ILE*     4.1    12.1    -      -       +      +
    136W  GLY*     3.5     9.7    +      -       -      -
    203W  2AN      4.3     7.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 133 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4W  TYR*     4.2    17.3    -      -       +      -
      6W  ILE*     3.1    39.0    -      -       +      -
    120W  TYR*     3.6    24.5    -      -       +      -
    128W  VAL*     4.0    14.1    -      -       +      -
    129W  ASN      3.8    12.8    -      -       -      +
    130W  GLU*     3.0    15.4    +      -       +      +
    132W  GLU*     1.3    77.8    -      -       -      +
    134W  LYS*     1.3    66.9    +      -       +      +
    135W  ILE      3.2     1.1    +      -       -      -
    136W  GLY      3.4     0.5    +      -       -      -
    137W  GLU*     2.9    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 134 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130W  GLU*     3.1    39.6    +      -       +      +
    131W  GLU*     3.8     8.5    -      -       -      +
    133W  VAL*     1.3    81.2    -      -       +      +
    135W  ILE*     1.3    57.0    -      -       -      +
    137W  GLU*     4.3     3.3    -      -       -      +
    138W  LYS*     3.2    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 135 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93W  ARG*     3.8    26.7    -      -       -      +
    131W  GLU*     3.3    28.4    +      -       +      +
    132W  GLU*     4.2    10.5    -      -       +      +
    133W  VAL      3.2     0.2    -      -       -      -
    134W  LYS*     1.3    73.4    -      -       -      +
    136W  GLY*     1.3    58.5    +      -       -      +
    137W  GLU      3.1     4.3    -      -       -      -
    138W  LYS*     3.5     5.0    +      -       -      +
    139W  LYS*     2.9    50.8    +      -       +      +
    203W  2AN      3.5    21.3    -      -       +      -
    204W  2AN      5.9     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 136 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101W  TYR*     5.2     4.5    -      -       -      -
    120W  TYR*     3.8     2.2    +      -       -      -
    132W  GLU      3.5     4.0    +      -       -      -
    133W  VAL      3.4     3.8    +      -       -      -
    135W  ILE*     1.3    80.9    -      -       -      +
    137W  GLU*     1.3    75.4    +      -       -      +
    139W  LYS      4.1     1.8    -      -       -      -
    140W  ALA*     3.7    19.1    -      -       -      +
    203W  2AN      3.3    38.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 137 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6W  ILE*     3.5    28.3    -      -       +      -
      8W  LYS*     3.1    31.2    +      -       +      +
    101W  TYR*     5.1     3.7    -      -       -      -
    118W  VAL*     3.6    13.9    -      -       -      +
    120W  TYR*     2.5    36.6    +      -       -      -
    133W  VAL*     2.9    19.2    +      -       +      +
    134W  LYS*     4.3     3.6    -      -       -      +
    135W  ILE      3.1     0.4    -      -       -      -
    136W  GLY*     1.3    84.0    -      -       -      +
    138W  LYS*     1.3    65.0    +      -       -      +
    139W  LYS      3.3     0.2    -      -       -      -
    140W  ALA*     4.0     1.1    -      -       -      +
    141W  TYR*     3.1    24.8    +      -       -      +
    202W  2AN      5.3     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 138 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134W  LYS      3.2    19.5    +      -       -      +
    135W  ILE*     3.7     5.4    -      -       -      +
    137W  GLU*     1.3    78.5    -      -       -      +
    139W  LYS*     1.3    88.5    +      -       +      +
    141W  TYR*     3.2     5.5    +      -       -      +
    142W  GLU*     3.0    44.3    +      -       +      +
    204W  2AN      3.7    20.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 139 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35W  GLN*     5.0     0.7    +      -       -      -
    135W  ILE*     2.9    40.0    +      -       +      +
    138W  LYS*     1.3   100.5    -      -       +      +
    140W  ALA*     1.3    61.2    +      -       -      +
    142W  GLU*     3.8    10.0    -      -       -      +
    143W  PHE*     3.2    22.3    +      -       -      +
    203W  2AN      3.7    59.1    -      -       +      +
    204W  2AN      2.3    56.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 140 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27W  ARG*     3.5    12.8    +      -       -      +
    101W  TYR*     5.6     2.0    -      -       +      -
    136W  GLY      3.7    15.9    +      -       -      +
    137W  GLU*     3.6     3.9    +      -       -      +
    138W  LYS      3.3     0.4    -      -       -      -
    139W  LYS*     1.3    79.4    -      -       -      +
    141W  TYR*     1.3    57.7    +      -       -      +
    143W  PHE*     3.7     5.2    +      -       -      +
    144W  TYR*     3.2    26.0    +      -       -      +
    202W  2AN      3.6    23.6    +      -       +      -
    203W  2AN      3.5    28.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 141 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8W  LYS*     5.7     4.7    -      -       +      +
     10W  GLU*     4.0    24.7    +      -       +      -
    137W  GLU      3.1    20.2    +      -       -      +
    138W  LYS*     3.6     5.6    -      -       -      +
    140W  ALA*     1.3    74.3    -      -       -      +
    142W  GLU*     1.3    67.9    +      -       -      +
    143W  PHE      3.3     0.2    -      -       -      -
    144W  TYR*     3.3    35.0    +      +       -      +
    145W  LYS*     3.1    50.0    +      -       +      +
    202W  2AN      4.0    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 142 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35W  GLN*     3.9    17.0    +      -       -      -
    138W  LYS*     3.0    39.5    +      -       +      +
    139W  LYS*     3.8     9.9    -      -       -      +
    141W  TYR*     1.3    80.3    -      -       -      +
    143W  PHE*     1.3    63.4    +      -       -      +
    145W  LYS*     3.0    17.7    +      -       -      +
    146W  GLN*     3.1    26.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 143 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22W  ALA      4.6     2.2    -      -       -      -
     23W  LEU*     3.7    21.8    -      -       +      -
     27W  ARG*     4.0    31.9    -      -       +      -
     30W  VAL*     3.7    14.4    -      -       +      -
     31W  LEU*     3.7    51.6    -      -       +      -
     34W  ALA*     4.0    12.8    -      -       +      -
     35W  GLN*     4.3     6.9    -      -       -      +
    139W  LYS      3.2    16.7    +      -       -      +
    140W  ALA      3.9     3.8    -      -       -      +
    141W  TYR      3.3     0.2    -      -       -      -
    142W  GLU*     1.3    77.9    -      -       -      +
    144W  TYR*     1.3    58.1    +      -       -      +
    146W  GLN*     3.2    14.3    +      -       -      +
    147W  VAL*     3.0    56.3    +      -       +      +
    203W  2AN      3.8     9.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with TYR 144 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10W  GLU*     3.8     5.4    +      -       +      -
     11W  GLU      3.6    10.9    +      -       -      -
     12W  SER*     4.2     2.7    -      -       -      -
     19W  LEU*     4.5     5.4    -      -       +      -
     23W  LEU*     4.0    30.7    -      -       +      -
    140W  ALA      3.2    10.7    +      -       -      +
    141W  TYR*     3.5    31.4    -      +       -      +
    142W  GLU      3.1     0.6    -      -       -      -
    143W  PHE*     1.3    77.5    -      -       -      +
    145W  LYS*     1.3    79.8    +      -       +      +
    147W  VAL*     3.5     1.6    +      -       -      +
    148W  GLU*     2.8    53.2    +      -       +      +
    202W  2AN      3.0    66.8    -      +       +      +
----------------------------------------------------------
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Residues in contact with LYS 145 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10W  GLU*     5.7     0.6    +      -       -      -
    141W  TYR*     3.1    38.8    +      -       +      +
    142W  GLU*     3.3    10.8    -      -       -      +
    144W  TYR*     1.3   103.4    +      -       +      +
    146W  GLN*     1.3    58.9    +      -       +      +
    148W  GLU*     3.0    30.3    +      -       -      +
    149W  GLU*     3.1    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 146 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34W  ALA*     3.5    28.3    +      -       +      +
     35W  GLN*     2.5    37.3    +      -       -      +
     37W  HIS*     6.0     0.6    -      -       -      -
    142W  GLU*     3.1    25.9    +      -       +      +
    143W  PHE*     3.6    11.8    +      -       -      +
    145W  LYS*     1.3    76.3    -      -       +      +
    147W  VAL*     1.3    63.3    +      -       +      +
    149W  GLU*     3.8     7.5    -      -       -      +
    150W  TYR*     3.0    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 147 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19W  LEU*     5.2     1.3    -      -       +      -
     22W  ALA*     3.8    29.6    -      -       +      -
     23W  LEU*     4.3     9.9    -      -       +      -
     30W  VAL*     4.0    15.3    -      -       +      -
     34W  ALA*     4.3     8.5    -      -       +      -
    143W  PHE*     3.0    44.7    +      -       +      +
    144W  TYR      4.1     3.4    -      -       -      +
    146W  GLN*     1.3    79.7    -      -       -      +
    148W  GLU*     1.3    59.4    +      -       -      +
    150W  TYR*     4.2     6.7    -      -       +      -
    151W  LEU*     2.8    49.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 148 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11W  GLU      4.5     0.3    -      -       -      +
     12W  SER*     2.5    30.6    +      -       -      +
     13W  PRO*     3.5    17.2    -      -       +      +
     14W  ILE*     3.9    15.1    -      -       +      +
     19W  LEU*     5.2     3.5    -      -       +      +
    144W  TYR*     2.8    44.1    +      -       +      +
    145W  LYS*     3.0    31.9    +      -       -      +
    147W  VAL*     1.3    77.7    -      -       -      +
    149W  GLU*     1.3    60.7    +      -       -      +
    151W  LEU*     5.0     0.9    -      -       -      -
    152W  ALA*     3.1    25.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 149 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145W  LYS      3.1    17.2    +      -       -      +
    146W  GLN*     3.8     7.7    -      -       -      +
    147W  VAL      3.2     0.2    -      -       -      -
    148W  GLU*     1.3    75.7    -      -       -      +
    150W  TYR*     1.3    73.8    +      -       -      +
    152W  ALA*     3.5     4.5    +      -       -      +
    153W  ALA*     3.0    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 150 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146W  GLN      3.0    18.6    +      -       -      +
    147W  VAL*     3.8     8.3    -      -       +      +
    149W  GLU*     1.3    86.3    +      -       -      +
    151W  LEU*     1.3    69.7    -      -       +      +
    153W  ALA*     3.0     3.4    +      -       -      -
    154W  ASN*     2.9    66.6    +      -       +      +
    157W  VAL*     4.3    27.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 151 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14W  ILE*     3.7    31.2    -      -       +      -
     18W  ARG*     2.9    57.6    +      -       +      +
     19W  LEU*     4.2     7.9    -      -       +      -
     22W  ALA*     4.2     1.8    -      -       +      -
    147W  VAL*     2.8    41.9    +      -       +      +
    150W  TYR*     1.3    87.2    -      -       +      +
    152W  ALA*     1.3    61.0    +      -       -      +
    154W  ASN      3.0    15.3    -      -       -      +
    155W  PRO*     3.9     0.7    -      -       -      +
    157W  VAL*     4.1    10.8    -      -       +      +
    158W  PHE*     3.9    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 152 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13W  PRO*     6.1     4.7    -      -       +      -
     14W  ILE*     3.4    17.1    -      -       +      +
     18W  ARG*     4.7     1.3    -      -       -      +
    148W  GLU*     3.1    21.0    +      -       +      +
    149W  GLU*     3.8     5.4    -      -       -      +
    151W  LEU*     1.3    75.9    -      -       -      +
    153W  ALA*     1.3    56.9    +      -       -      +
    154W  ASN      4.9     0.7    -      -       -      -
    155W  PRO*     5.0     5.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 153 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149W  GLU*     3.0    28.0    +      -       -      +
    150W  TYR*     3.0     7.3    +      -       -      +
    152W  ALA*     1.3    76.7    -      -       -      +
    154W  ASN*     1.3    71.1    +      -       -      +
    155W  PRO*     3.9     7.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 154 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18W  ARG*     2.6    29.8    +      -       -      -
    150W  TYR*     2.9    54.7    +      -       +      +
    151W  LEU*     3.0     4.0    -      -       -      +
    153W  ALA*     1.3    89.0    +      -       -      +
    155W  PRO*     1.4    58.4    -      -       -      +
    156W  GLU*     3.2    16.0    +      -       -      +
    157W  VAL*     3.4    18.1    +      -       +      +
----------------------------------------------------------
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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