Contacts of the helix formed by residues 166 - 192 (chain F) in PDB entry 4DEM


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 TYR 166 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82F  PHE*     5.9     0.3    -      -       -      -
     98F  ARG*     3.3    31.5    +      -       -      -
    161F  CYS*     4.1    11.7    -      -       +      -
    164F  GLN*     3.6    27.1    -      -       +      -
    165F  PRO*     1.3    85.9    -      -       +      +
    167F  TYR*     1.3    65.4    +      -       -      +
    168F  LEU      3.4     2.0    -      -       -      -
    169F  ASN*     3.2    14.3    +      -       +      +
    170F  LEU*     3.0    42.1    +      -       +      +
    229F  TYR*     3.5    27.6    -      -       +      +
    230F  MET*     3.6    54.0    -      -       +      +
    232F  GLY*     5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 167 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154F  TYR      4.9     1.2    +      -       -      -
    157F  LEU*     3.4    29.8    -      -       +      +
    158F  LYS*     3.6    25.3    +      -       -      +
    161F  CYS*     3.4    32.1    -      -       +      +
    162F  ARG*     3.7    36.1    +      -       +      +
    164F  GLN      3.1    11.5    +      -       -      +
    165F  PRO      3.3     1.0    -      -       -      -
    166F  TYR*     1.3    81.3    -      -       -      +
    168F  LEU*     1.3    61.4    +      -       +      +
    170F  LEU*     3.1     6.2    +      -       +      +
    171F  ILE*     2.9    58.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 168 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  PRO      4.9     2.8    +      -       -      +
    166F  TYR      3.4     0.4    -      -       -      -
    167F  TYR*     1.3    79.9    -      -       +      +
    169F  ASN*     1.3    68.3    +      -       -      +
    171F  ILE*     3.3    16.1    +      -       +      +
    172F  GLU*     2.9    52.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 169 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  PRO      5.0     3.2    +      -       -      -
    166F  TYR*     3.2    18.5    +      -       -      +
    168F  LEU*     1.3    80.8    -      -       -      +
    170F  LEU*     1.3    57.8    +      -       -      +
    172F  GLU*     3.9    10.6    -      -       -      +
    173F  LEU*     3.0    29.1    +      -       -      +
    229F  TYR*     3.5    49.5    +      -       +      -
    234F  ASP*     4.2    13.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 170 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102F  VAL*     3.9    27.1    -      -       +      -
    157F  LEU*     4.0    20.2    -      -       +      -
    161F  CYS*     4.4     4.3    -      -       +      -
    166F  TYR*     3.0    43.7    +      -       +      +
    167F  TYR      3.1     6.7    +      -       -      +
    169F  ASN*     1.3    74.8    -      -       -      +
    171F  ILE*     1.3    67.6    +      -       -      +
    173F  LEU*     3.3     7.2    +      -       +      +
    174F  PHE*     3.0    33.5    +      -       +      -
    226F  ALA*     3.7    42.8    -      -       +      +
    229F  TYR*     4.2    11.2    -      -       +      -
    230F  MET*     4.2     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 171 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154F  TYR*     4.1    14.0    -      -       +      -
    157F  LEU*     4.3    17.3    -      -       +      -
    167F  TYR*     2.9    61.7    +      -       +      +
    168F  LEU*     3.3    20.2    +      -       +      +
    170F  LEU*     1.3    76.8    -      -       -      +
    172F  GLU*     1.3    59.3    +      -       +      +
    174F  PHE*     3.3     1.7    +      -       -      +
    175F  LEU*     3.0    48.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 172 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168F  LEU*     2.9    51.8    +      -       +      +
    169F  ASN*     4.1    10.4    -      -       -      +
    171F  ILE*     1.3    77.1    -      -       +      +
    173F  LEU*     1.3    58.5    +      -       -      +
    175F  LEU*     3.8     9.0    -      -       +      +
    176F  GLN*     2.8    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 173 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169F  ASN      3.0    18.2    +      -       -      +
    170F  LEU*     3.6     7.4    -      -       +      +
    172F  GLU*     1.3    74.0    -      -       -      +
    174F  PHE*     1.3    60.3    +      -       +      +
    176F  GLN*     4.1     5.1    -      -       +      +
    177F  SER*     2.7    44.0    +      -       -      +
    221F  TYR*     3.6    32.3    -      -       +      +
    222F  LEU*     3.6    19.3    -      -       +      -
    225F  ALA*     3.8     8.7    -      -       +      -
    226F  ALA*     3.5    38.1    -      -       +      +
    229F  TYR*     4.0    15.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 174 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102F  VAL*     4.0    18.2    -      -       +      -
    105F  CYS*     3.6    29.6    -      -       +      -
    106F  VAL*     3.7    38.1    -      -       +      -
    109F  LEU*     4.6     7.0    -      -       +      +
    153F  ILE*     3.8    18.6    -      -       +      -
    154F  TYR*     3.5    19.5    -      -       +      +
    157F  LEU*     4.1    15.9    -      -       +      -
    170F  LEU*     3.0    31.3    +      -       +      +
    171F  ILE      3.8     2.7    -      -       -      +
    173F  LEU*     1.3    78.3    -      -       +      +
    175F  LEU*     1.3    60.2    +      -       -      +
    177F  SER*     3.4     2.5    +      -       -      -
    178F  SER*     2.8    30.3    +      -       -      -
    222F  LEU*     4.1    26.5    -      -       +      -
    226F  ALA*     4.9     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 175 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150F  GLU*     5.7     2.9    -      -       -      +
    154F  TYR*     3.3    29.2    -      -       +      +
    171F  ILE*     3.0    39.3    +      -       +      +
    172F  GLU*     3.8    10.1    -      -       +      +
    174F  PHE*     1.3    73.7    -      -       -      +
    176F  GLN*     1.3    64.5    +      -       -      +
    178F  SER*     3.3     6.2    +      -       -      -
    179F  TYR*     3.0    23.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 176 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172F  GLU      2.8    23.4    +      -       -      +
    173F  LEU*     4.1     6.1    -      -       +      +
    175F  LEU*     1.3    75.5    -      -       -      +
    177F  SER*     1.3    56.8    +      -       -      +
    179F  TYR*     3.3    18.6    +      -       -      +
    180F  GLN*     2.9    57.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 177 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109F  LEU*     4.9     1.8    -      -       -      -
    113F  PHE*     5.3     0.2    -      -       -      -
    173F  LEU*     2.7    34.3    +      -       -      +
    174F  PHE      3.9     3.1    -      -       -      -
    176F  GLN*     1.3    77.4    -      -       -      +
    178F  SER*     1.3    53.3    +      -       -      +
    180F  GLN*     3.5    13.7    +      -       -      +
    181F  THR*     2.7    39.3    +      -       -      -
    217F  PHE*     4.7     3.7    +      -       -      +
    218F  TYR*     4.5    10.5    -      -       -      +
    221F  TYR*     5.2     2.1    -      -       -      -
    222F  LEU*     3.8    37.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 178 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109F  LEU*     3.3    25.3    -      -       -      +
    113F  PHE*     4.2    11.2    -      -       -      -
    150F  GLU*     4.6    11.5    +      -       -      -
    154F  TYR*     4.2     5.3    +      -       -      -
    174F  PHE      2.8    19.2    +      -       -      -
    175F  LEU*     3.6     8.1    -      -       -      -
    177F  SER*     1.3    71.9    -      -       -      +
    179F  TYR*     1.3    67.3    +      -       -      +
    181F  THR*     3.3     1.7    +      -       -      -
    182F  GLU*     3.0    43.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 179 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175F  LEU      3.0    13.8    +      -       -      +
    176F  GLN*     3.6    23.8    -      -       -      +
    178F  SER*     1.3    77.8    -      -       -      +
    180F  GLN*     1.3    69.3    +      -       +      +
    182F  GLU*     3.3    12.1    +      -       +      +
    183F  ILE*     2.9    56.0    +      -       +      +
    213F  TYR*     6.5     0.9    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLN 180 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176F  GLN*     2.9    44.6    +      -       -      +
    177F  SER*     3.6    12.3    +      -       -      +
    179F  TYR*     1.3    81.1    -      -       +      +
    181F  THR*     1.3    62.5    +      -       -      +
    183F  ILE*     3.2     5.5    +      -       -      +
    184F  GLY      3.0    18.2    +      -       -      -
    213F  TYR*     3.2    25.0    -      -       +      +
    217F  PHE*     3.3    65.0    -      -       +      +
    221F  TYR*     5.8     1.2    -      -       -      -
    243F  LYS*     5.2     4.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 181 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113F  PHE*     3.5    27.1    -      -       +      -
    177F  SER      2.7    22.2    +      -       -      -
    178F  SER      3.7     0.9    -      -       -      -
    180F  GLN*     1.3    76.4    -      -       -      +
    182F  GLU*     1.3    57.5    +      -       -      +
    184F  GLY*     3.2     2.6    +      -       -      -
    185F  GLN*     2.9    26.3    +      -       -      +
    213F  TYR      3.2    10.7    +      -       -      -
    214F  LYS*     3.5    16.6    -      -       -      +
    218F  TYR*     3.4    26.1    +      -       +      +
    401F  YS4      3.3    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 182 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112F  PHE*     3.9    18.4    -      -       -      -
    113F  PHE*     4.4     2.5    -      -       +      -
    150F  GLU*     4.6     3.3    -      -       -      +
    178F  SER*     3.0    30.5    +      -       -      +
    179F  TYR*     3.7    10.4    -      -       +      +
    181F  THR*     1.3    75.2    -      -       -      +
    183F  ILE*     1.3    64.0    +      -       -      +
    185F  GLN*     3.4     8.0    +      -       -      +
    186F  THR*     2.8    28.4    +      -       -      -
    401F  YS4      3.7    35.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 183 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179F  TYR*     2.9    56.1    +      -       +      +
    180F  GLN*     3.4     8.7    -      -       -      +
    182F  GLU*     1.3    77.5    -      -       -      +
    184F  GLY*     1.3    63.1    +      -       -      +
    186F  THR*     3.2    12.9    +      -       +      +
    187F  LEU*     3.0    30.8    +      -       +      +
    213F  TYR*     4.0    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 184 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180F  GLN      3.0    11.3    +      -       -      -
    181F  THR      3.2     3.8    +      -       -      -
    183F  ILE*     1.3    76.7    -      -       -      +
    185F  GLN*     1.3    56.1    +      -       -      +
    187F  LEU*     3.2     8.9    +      -       -      +
    188F  ASP*     2.8    28.2    +      -       -      +
    210F  ILE*     4.1     5.5    -      -       -      +
    213F  TYR*     3.4    22.7    -      -       -      -
    214F  LYS*     3.6    16.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 185 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117F  ASP*     3.1    25.7    +      -       -      +
    120F  MET*     3.7    20.6    -      -       +      +
    121F  ASP*     5.1     0.2    +      -       -      -
    181F  THR      2.9     8.0    +      -       -      +
    182F  GLU*     3.6     7.4    -      -       -      +
    184F  GLY*     1.3    75.1    -      -       -      +
    186F  THR*     1.3    57.1    +      -       -      +
    188F  ASP*     3.2    12.4    +      -       -      +
    189F  LEU*     2.9    54.5    +      -       +      +
    214F  LYS*     3.9     6.7    -      -       -      +
    401F  YS4      3.6    58.2    -      -       +      -
    402F   MG      4.1     6.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 186 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182F  GLU      2.8    19.9    +      -       -      -
    183F  ILE*     3.3    17.4    -      -       +      +
    185F  GLN*     1.3    75.7    -      -       -      +
    187F  LEU*     1.3    59.3    +      -       +      +
    189F  LEU*     3.3     8.7    +      -       -      +
    190F  LEU*     2.8    55.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 187 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183F  ILE*     3.0    24.5    +      -       +      +
    184F  GLY*     3.5     9.6    -      -       -      +
    186F  THR*     1.3    74.0    -      -       +      +
    188F  ASP*     1.3    63.8    +      -       -      +
    190F  LEU*     3.9    11.4    -      -       +      -
    191F  THR*     2.7    32.4    +      -       -      -
    206F  ARG*     4.0    27.8    -      -       -      +
    209F  SER*     4.2    31.2    -      -       -      +
    210F  ILE*     3.9    18.2    -      -       +      -
    213F  TYR*     4.9     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 188 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184F  GLY      2.8    16.8    +      -       -      +
    185F  GLN*     3.2    20.4    +      -       -      +
    187F  LEU*     1.3    76.5    -      -       -      +
    189F  LEU*     1.3    69.6    +      -       -      +
    191F  THR*     3.4     2.6    +      -       -      -
    192F  ALA*     3.4    21.1    +      -       -      +
    210F  ILE*     4.0    19.8    -      -       +      +
    214F  LYS*     2.9    30.0    +      -       +      -
    280F  LYS*     3.5    33.4    +      -       -      +
    281F  CYS*     5.7     0.9    +      -       -      +
    401F  YS4      4.4     0.9    +      -       -      -
    402F   MG      4.2     5.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 189 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120F  MET*     4.3    41.5    -      -       +      +
    121F  ASP*     4.6     9.4    -      -       -      +
    185F  GLN*     2.9    35.4    +      -       +      +
    186F  THR*     3.9     6.1    -      -       -      +
    188F  ASP*     1.3    84.0    -      -       -      +
    190F  LEU*     1.3    66.8    +      -       +      +
    192F  ALA*     3.2    23.1    +      -       -      +
    193F  PRO*     3.8     3.6    -      -       -      +
    280F  LYS*     5.1     4.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 190 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186F  THR*     2.8    49.2    +      -       +      +
    187F  LEU*     3.9    14.1    -      -       +      +
    189F  LEU*     1.3    76.2    -      -       +      +
    191F  THR*     1.3    60.7    +      -       -      +
    192F  ALA      3.2     1.2    +      -       -      -
    193F  PRO*     3.6     8.3    -      -       -      +
    201F  ARG*     3.4    19.4    +      -       -      +
    206F  ARG*     4.5     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 191 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187F  LEU      2.7    22.1    +      -       -      -
    188F  ASP      3.9     3.8    -      -       -      -
    189F  LEU      3.3     0.2    -      -       -      -
    190F  LEU*     1.3    73.7    -      -       -      +
    192F  ALA*     1.3    57.8    +      -       -      +
    193F  PRO*     3.3    10.6    -      -       -      +
    198F  ASP*     3.6     5.4    -      -       -      +
    201F  ARG*     3.8    33.6    -      -       +      +
    202F  PHE*     3.4    17.9    -      -       +      -
    206F  ARG*     2.8    33.8    +      -       +      +
    210F  ILE*     3.9     6.7    -      -       -      +
    281F  CYS*     3.8    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 192 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188F  ASP      3.4    15.7    -      -       -      +
    189F  LEU*     3.2    10.5    +      -       -      +
    190F  LEU      3.2     0.8    -      -       -      -
    191F  THR*     1.3    77.9    -      -       -      +
    193F  PRO*     1.3    68.0    -      -       -      +
    194F  GLN*     3.4     5.2    +      -       -      +
    278F  ASP      3.8    11.6    -      -       -      +
    279F  ASN*     3.1    32.1    -      -       -      +
    280F  LYS*     3.9    19.0    -      -       +      -
    281F  CYS      4.7     0.9    -      -       -      +
----------------------------------------------------------
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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