Contacts of the helix formed by residues 222 - 243 (chain C) in PDB entry 2AAZ


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 LEU 222 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69C  LYS*     4.5     4.3    +      -       -      +
    219C  ASP*     3.1    13.1    +      -       -      +
    221C  GLY*     1.3    80.5    -      -       -      +
    223C  GLY*     1.3    65.6    +      -       -      +
    225C  PRO*     3.6     6.6    -      -       -      +
    226C  PHE*     3.9     9.4    -      -       -      -
    262C  HIS*     3.7    14.1    -      -       +      -
    313C  MET*     3.7    21.3    -      -       +      +
    314C  LYS      3.7     7.4    -      -       -      +
    315C  MET*     3.5    45.5    -      -       +      +
   2451C  CB3      3.4    70.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 223 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219C  ASP*     2.8    14.3    +      -       -      +
    222C  LEU*     1.3    71.2    -      -       -      +
    224C  VAL*     1.3    53.6    +      -       -      -
    226C  PHE*     2.7    29.1    +      -       -      +
    227C  ASN*     2.9    17.5    +      -       -      +
    450C  UMP      3.5     5.4    -      -       -      -
   2451C  CB3      3.1    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 224 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  TYR*     3.9    15.0    -      -       +      -
     54C  PHE*     4.6     0.2    -      -       +      -
    215C  GLN*     4.4     6.3    -      -       -      +
    218C  CYS*     3.8    26.5    -      -       +      -
    219C  ASP      3.0    15.1    +      -       -      +
    220C  LEU*     3.7    20.4    -      -       +      +
    223C  GLY*     1.3    69.7    -      -       -      -
    225C  PRO*     1.3    69.2    -      -       +      +
    227C  ASN*     3.7     7.5    +      -       -      -
    228C  ILE*     2.9    52.9    +      -       +      +
    251C  LEU*     4.6     2.9    -      -       +      -
    253C  MET*     4.2    18.6    -      -       +      -
    450C  UMP      4.2     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 225 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  TYR*     3.6    13.7    -      -       +      +
     64C  PRO      5.4     0.7    -      -       -      +
     65C  LEU*     5.4     0.5    -      -       -      +
     66C  LEU*     3.7    32.9    +      -       +      +
     69C  LYS*     4.1    17.5    -      -       -      +
     71C  VAL*     4.5    13.4    -      -       +      +
    220C  LEU      3.3    14.4    -      -       -      +
    221C  GLY      3.6    15.9    -      -       -      +
    222C  LEU      3.6     9.4    -      -       -      +
    223C  GLY      3.3     4.5    -      -       -      -
    224C  VAL*     1.3    92.1    -      -       +      +
    226C  PHE*     1.3    64.1    +      -       +      +
    228C  ILE*     4.1     2.5    -      -       +      +
    229C  ALA*     3.5    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 226 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69C  LYS*     6.5     0.4    -      -       -      -
     71C  VAL*     4.3    16.6    -      -       +      -
     72C  PHE*     3.8    27.8    -      +       +      -
     75C  GLY      3.9     4.9    -      -       -      -
     76C  VAL*     3.5    41.1    -      -       +      +
     79C  GLU*     4.2    13.7    -      -       -      +
    100C  ILE*     4.1    22.0    -      -       +      -
    222C  LEU      3.9    12.1    -      -       -      -
    223C  GLY      2.7    15.0    +      -       -      +
    225C  PRO*     1.3    76.7    -      -       +      +
    227C  ASN*     1.3    55.2    +      -       -      +
    228C  ILE      3.2     0.2    +      -       -      -
    229C  ALA*     3.3     1.9    +      -       -      +
    230C  SER*     2.8    38.8    +      -       -      -
   2451C  CB3      3.6    55.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with ASN 227 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188C  HIS*     3.4    22.6    +      -       -      +
    213C  MET*     4.0     8.5    -      -       +      +
    215C  GLN*     2.8    41.9    +      -       -      +
    223C  GLY      2.9    16.6    +      -       -      +
    224C  VAL*     3.7     8.0    +      -       -      +
    226C  PHE*     1.3    77.0    -      -       -      +
    228C  ILE*     1.3    61.0    +      -       -      +
    230C  SER*     4.3     5.0    -      -       -      -
    231C  TYR*     3.1    31.2    +      -       -      +
    249C  PHE*     4.6     0.9    -      -       -      -
    251C  LEU*     4.9     3.1    -      -       +      -
    450C  UMP      2.9    31.0    +      -       -      -
   2451C  CB3      3.8     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 228 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  TYR*     4.7     7.9    -      -       +      -
     54C  PHE*     4.2     8.5    -      -       +      -
     56C  PHE*     3.7    45.5    -      -       +      -
     64C  PRO*     3.6    24.2    -      -       +      +
     66C  LEU*     4.7    11.7    -      -       +      -
    224C  VAL*     2.9    36.8    +      -       +      +
    225C  PRO*     4.1     4.5    -      -       +      +
    227C  ASN*     1.3    76.4    -      -       -      +
    229C  ALA*     1.3    62.2    +      -       -      +
    232C  ALA*     3.1    22.2    +      -       -      +
    249C  PHE*     3.9    11.7    -      -       +      -
    251C  LEU*     3.7    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 229 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  LEU*     4.6     7.9    -      -       +      -
     64C  PRO      4.3    11.0    -      -       -      +
     65C  LEU*     3.8    27.1    -      -       +      -
     73C  LEU*     5.8     0.2    -      -       +      -
     76C  VAL*     4.0    14.8    -      -       +      -
    225C  PRO      3.5    13.0    +      -       -      +
    226C  PHE      3.3     3.4    +      -       -      +
    228C  ILE*     1.3    80.1    -      -       -      +
    230C  SER*     1.3    57.5    +      -       -      +
    232C  ALA*     3.3     5.5    +      -       -      +
    233C  LEU*     2.8    37.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 230 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76C  VAL*     3.6    16.0    +      -       -      +
     79C  GLU*     4.8     7.3    +      -       -      -
     80C  LEU*     3.6    25.9    -      -       -      +
     83C  PHE*     4.5    12.5    -      -       -      -
    131C  TRP*     6.0     0.3    -      -       -      -
    188C  HIS*     6.5     0.2    -      -       -      -
    226C  PHE      2.8    23.4    +      -       -      -
    227C  ASN*     3.7     7.4    -      -       -      -
    229C  ALA*     1.3    72.7    -      -       -      +
    231C  TYR*     1.3    67.0    +      -       -      +
    233C  LEU*     3.2     5.7    +      -       -      +
    234C  LEU*     2.8    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 231 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83C  PHE*     6.0     0.2    -      +       -      -
    131C  TRP*     3.3    21.2    +      +       -      -
    171C  LEU      5.7     0.5    +      -       -      -
    188C  HIS*     2.6    53.5    +      +       +      +
    190C  PHE*     5.3     2.6    +      -       -      -
    191C  CYS*     3.8    28.6    -      -       +      +
    211C  CYS*     4.2     6.1    -      -       -      -
    213C  MET*     3.7    32.3    -      -       +      +
    227C  ASN*     3.1    16.9    +      -       -      +
    230C  SER*     1.3    84.4    -      -       -      +
    232C  ALA*     1.3    64.4    +      -       -      +
    234C  LEU*     3.7    23.5    -      -       +      +
    235C  THR*     2.9    30.6    +      -       -      -
    249C  PHE*     3.5    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 232 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  LEU*     3.8    17.2    -      -       +      +
     63C  LEU*     4.0     5.2    -      -       +      -
     64C  PRO*     3.6    33.9    -      -       +      -
    228C  ILE      3.1    19.5    +      -       -      +
    229C  ALA      3.6     4.0    -      -       -      +
    231C  TYR*     1.3    77.0    -      -       -      +
    233C  LEU*     1.3    65.1    +      -       -      +
    235C  THR*     3.3     4.4    +      -       -      -
    236C  HIS*     3.0    29.4    +      -       +      -
    249C  PHE*     4.7     5.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 233 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  LEU*     3.6    30.7    -      -       +      -
     73C  LEU*     4.6     8.7    -      -       +      -
     76C  VAL*     3.9    22.9    -      -       +      -
     77C  ILE*     4.0    22.0    -      -       +      +
     80C  LEU*     3.7    15.7    -      -       +      -
    229C  ALA*     2.8    26.3    +      -       +      +
    230C  SER*     3.5     4.7    -      -       -      +
    232C  ALA*     1.3    74.3    -      -       -      +
    234C  LEU*     1.3    65.0    +      -       -      +
    236C  HIS*     3.1     6.0    +      -       -      +
    237C  MET*     2.9    27.0    +      -       -      +
    280C  LEU*     4.0    15.0    -      -       +      -
    300C  PHE*     4.0    24.0    -      -       +      -
    302C  VAL*     5.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 234 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80C  LEU*     3.7    21.9    -      -       +      +
     84C  VAL*     4.6    14.1    -      -       +      -
    131C  TRP*     4.0    17.0    -      -       +      -
    153C  LEU*     4.7     9.2    -      -       +      -
    171C  LEU*     4.0    25.6    -      -       +      -
    193C  PHE*     4.3     8.1    -      -       +      -
    211C  CYS*     6.5     0.2    -      -       -      -
    230C  SER      2.8    19.2    +      -       -      +
    231C  TYR*     3.7    24.5    -      -       +      +
    232C  ALA      3.3     0.2    -      -       -      -
    233C  LEU*     1.3    72.2    -      -       -      +
    235C  THR*     1.3    58.5    +      -       -      +
    237C  MET*     3.2     9.9    +      -       -      +
    238C  ILE*     2.9    54.0    +      -       +      +
    292C  ILE*     4.9     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 235 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  LEU*     3.7    23.4    -      -       +      +
    193C  PHE*     4.0     5.9    -      -       +      -
    209C  LEU*     3.6    34.3    -      -       +      +
    210C  SER      4.9     0.4    -      -       -      -
    211C  CYS*     3.3    29.8    -      -       +      +
    231C  TYR      2.9    18.3    +      -       -      -
    232C  ALA      3.6     4.9    -      -       -      -
    234C  LEU*     1.3    77.6    -      -       -      +
    236C  HIS*     1.3    56.8    +      -       -      +
    238C  ILE*     4.6     4.3    -      -       -      -
    239C  ALA*     2.9    31.2    +      -       -      +
    246C  PRO*     4.5     4.9    -      -       +      -
    249C  PHE*     5.1     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 236 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  LEU*     3.7    28.0    -      -       +      +
     61C  ASN*     4.1    16.9    +      -       -      -
     62C  THR      2.9    28.9    +      -       -      -
     63C  LEU*     4.6     6.7    -      -       +      -
    232C  ALA      3.0    32.1    +      -       -      -
    233C  LEU*     3.1     7.8    +      -       -      +
    235C  THR*     1.3    76.1    -      -       -      +
    237C  MET*     1.3    62.7    +      -       -      +
    239C  ALA*     3.3     7.1    +      -       -      +
    240C  LEU*     3.1    18.4    +      -       -      +
    246C  PRO*     3.5    20.5    -      -       +      +
    280C  LEU*     3.5    33.8    +      -       +      +
    282C  TRP*     3.7    13.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 237 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80C  LEU*     3.6    32.1    -      -       -      -
     81C  LEU*     3.8    16.4    -      -       +      -
     84C  VAL*     4.3    11.7    -      -       +      -
    233C  LEU      2.9    13.6    +      -       -      +
    234C  LEU*     3.4    11.2    -      -       +      +
    236C  HIS*     1.3    76.5    -      -       -      +
    238C  ILE*     1.3    62.0    +      -       -      +
    240C  LEU*     3.1    12.3    +      -       -      +
    241C  ILE*     3.2    18.0    +      -       -      +
    282C  TRP*     3.8    19.7    -      -       +      -
    292C  ILE*     4.1    21.8    -      -       +      +
    295C  PHE*     3.6    41.7    -      -       +      -
    300C  PHE*     3.8    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 238 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153C  LEU*     4.3    12.8    -      -       +      -
    156C  VAL*     4.5     4.0    -      -       +      -
    157C  ILE*     3.6    26.5    -      -       +      -
    160C  ILE*     3.5    30.3    -      -       +      -
    193C  PHE*     3.4    36.3    -      -       +      -
    209C  LEU*     3.8    10.1    -      -       +      -
    234C  LEU*     2.9    31.6    +      -       +      +
    235C  THR      3.9     3.4    -      -       -      +
    237C  MET*     1.3    77.0    -      -       -      +
    239C  ALA*     1.3    59.4    +      -       -      +
    241C  ILE*     3.3     2.6    +      -       -      +
    242C  THR*     2.8    30.3    +      -       +      +
    292C  ILE*     4.2    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 239 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209C  LEU*     3.8     4.7    -      -       +      +
    235C  THR      2.9    18.8    +      -       -      +
    236C  HIS      3.5     6.7    -      -       -      +
    237C  MET      3.2     0.2    -      -       -      -
    238C  ILE*     1.3    79.0    -      -       -      +
    240C  LEU*     1.3    62.4    +      -       -      +
    243C  ASP*     3.1     4.7    +      -       -      -
    244C  THR*     2.9    55.5    +      -       -      +
    246C  PRO*     3.6    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 240 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236C  HIS      3.1    11.7    +      -       -      +
    237C  MET      3.1     9.4    +      -       -      +
    239C  ALA*     1.3    79.2    -      -       -      +
    241C  ILE*     1.3    64.4    +      -       +      +
    242C  THR      3.5     0.2    +      -       -      -
    243C  ASP*     3.6     6.1    +      -       -      +
    282C  TRP*     3.7    38.6    -      -       +      +
    284C  ARG      5.8     0.2    -      -       -      +
    285C  SER*     5.0     0.7    -      -       -      -
    286C  LYS*     3.6    46.7    -      -       +      +
    289C  ILE*     3.6    32.1    -      -       +      -
    295C  PHE*     3.9     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 241 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157C  ILE*     4.0    27.6    -      -       +      -
    161C  LYS*     3.9    14.1    +      -       +      +
    237C  MET      3.2    14.0    +      -       -      +
    238C  ILE      3.3     4.5    +      -       -      +
    240C  LEU*     1.3    81.4    -      -       +      +
    242C  THR*     1.3    58.4    +      -       -      +
    243C  ASP      3.5     0.2    -      -       -      -
    286C  LYS*     3.7    24.0    +      -       +      +
    289C  ILE*     4.3     6.1    -      -       +      -
    290C  GLY      4.1     8.7    -      -       -      +
    291C  ASP*     3.6    40.8    -      -       +      +
    292C  ILE*     3.9    14.8    -      -       +      +
    295C  PHE*     3.7    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 242 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157C  ILE*     3.7    35.4    -      -       +      +
    160C  ILE*     3.7    20.0    -      -       +      +
    161C  LYS*     3.7    23.7    -      -       +      +
    238C  ILE*     2.8    31.2    +      -       +      +
    239C  ALA      3.5     0.2    +      -       -      -
    241C  ILE*     1.3    79.7    -      -       -      +
    243C  ASP*     1.3    70.4    +      -       -      +
    244C  THR*     2.8    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 243 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161C  LYS*     6.1     0.5    -      -       -      -
    206C  LYS*     3.9    30.5    +      -       +      +
    207C  PRO*     3.9     6.4    -      -       -      +
    239C  ALA      3.1     5.8    +      -       -      -
    240C  LEU*     3.6     3.1    +      -       -      +
    241C  ILE      3.5     1.0    -      -       -      -
    242C  THR*     1.3    81.4    -      -       -      +
    244C  THR*     1.3    61.8    +      -       -      +
    286C  LYS*     2.7    42.9    +      -       -      +
----------------------------------------------------------
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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