Contacts of the helix formed by residues 207 - 230 (chain F) in PDB entry 1NU9


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 207 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49F  HIS*     3.1    32.3    +      -       +      -
     52F  GLU*     5.6     0.4    +      -       -      -
    145F  ASP      3.3    11.7    -      -       -      +
    146F  LEU*     3.4    18.3    +      -       -      +
    147F  LYS      3.3    21.3    -      -       -      +
    149F  PHE*     3.2    20.1    -      -       -      -
    205F  ILE      4.6     0.2    -      -       -      -
    206F  SER*     1.3    78.9    +      -       -      +
    208F  GLU*     1.3    62.7    +      -       -      +
    209F  ARG*     3.0     4.6    +      -       -      +
    210F  ILE*     2.7    47.3    +      -       -      +
    211F  GLU*     3.1    15.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 208 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144F  HIS*     4.3     6.8    -      -       -      +
    145F  ASP*     3.4    27.0    +      -       +      +
    147F  LYS      4.7     1.2    +      -       -      +
    149F  PHE*     3.3    27.6    -      -       +      -
    207F  ASN*     1.3    73.2    -      -       -      +
    209F  ARG*     1.3    59.9    +      -       -      +
    211F  GLU*     3.4     7.3    +      -       -      +
    212F  LYS*     3.0    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 209 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52F  GLU*     2.9    40.8    +      -       -      +
     53F  LYS*     4.5     3.0    -      -       -      +
     54F  GLU*     2.3    49.7    +      -       -      -
    143F  HIS*     5.0     2.2    +      -       -      -
    145F  ASP*     2.9    51.3    +      -       -      +
    146F  LEU*     3.6    13.0    -      -       +      +
    207F  ASN*     3.0     4.8    +      -       -      +
    208F  GLU*     1.3    75.6    -      -       -      +
    210F  ILE*     1.3    62.2    +      -       +      +
    212F  LYS*     3.3     3.7    +      -       -      -
    213F  GLU*     2.9    42.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 210 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  ARG*     3.9    26.9    -      -       -      +
     48F  TYR*     3.8    29.2    -      -       +      +
     49F  HIS*     4.0     8.7    -      -       -      +
     52F  GLU*     4.1     7.6    -      -       -      +
    204F  ARG      3.8    15.5    -      -       -      +
    205F  ILE*     4.0    15.3    -      -       +      -
    206F  SER*     3.7    23.1    -      -       -      +
    207F  ASN*     2.7    35.6    +      -       -      +
    209F  ARG*     1.3    73.3    -      -       -      +
    211F  GLU*     1.3    55.2    +      -       -      +
    213F  GLU*     4.7     3.8    -      -       -      -
    214F  MET*     2.8    39.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 211 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149F  PHE*     3.7    15.8    -      -       -      -
    157F  ALA*     3.5    28.2    -      -       +      +
    160F  ARG*     2.7    42.8    +      -       -      +
    161F  VAL*     4.9     0.7    -      -       +      -
    205F  ILE*     3.6    16.5    -      -       +      +
    207F  ASN      3.1    17.0    +      -       -      +
    208F  GLU*     3.6     7.5    -      -       -      +
    210F  ILE*     1.3    77.5    -      -       -      +
    212F  LYS*     1.3    63.7    +      -       -      +
    214F  MET*     4.0     1.6    -      -       -      +
    215F  ILE*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 212 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208F  GLU      3.0    17.5    +      -       -      +
    209F  ARG*     3.9     4.0    -      -       -      +
    211F  GLU*     1.3    79.5    -      -       -      +
    213F  GLU*     1.3    67.9    +      -       -      +
    215F  ILE*     3.6     5.0    +      -       -      +
    216F  LYS*     3.1    60.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 213 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  ARG*     6.4     1.3    -      -       -      +
     77D  ARG*     3.0    37.5    +      -       +      -
     52F  GLU*     5.4     3.8    -      -       -      +
    209F  ARG*     2.9    38.2    +      -       +      +
    210F  ILE*     4.3     3.6    -      -       -      +
    212F  LYS*     1.3    86.4    -      -       +      +
    214F  MET*     1.3    60.8    +      -       -      +
    215F  ILE      3.2     0.2    -      -       -      -
    216F  LYS*     3.7     6.2    +      -       -      +
    217F  ASP*     2.8    40.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 214 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48F  TYR*     3.9    22.7    -      -       +      +
    161F  VAL*     3.7    29.8    -      -       +      -
    195F  VAL*     3.2    44.4    -      -       -      +
    196F  LEU*     4.3    12.8    -      -       +      -
    203F  HIS*     4.5     9.0    -      -       +      +
    205F  ILE*     3.9    18.4    -      -       +      -
    210F  ILE*     2.8    23.9    +      -       +      +
    211F  GLU      4.0     2.2    -      -       -      +
    213F  GLU*     1.3    77.1    -      -       -      +
    215F  ILE*     1.3    56.6    +      -       -      +
    217F  ASP*     3.6     7.8    -      -       -      +
    218F  LEU*     2.9    38.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 215 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160F  ARG*     3.8    38.6    -      -       +      +
    161F  VAL*     3.7    37.2    -      -       +      +
    164F  LEU*     3.6    19.1    -      -       +      +
    211F  GLU*     3.0    24.9    +      -       +      +
    212F  LYS*     3.8     6.3    -      -       -      +
    214F  MET*     1.3    76.0    -      -       -      +
    216F  LYS*     1.3    62.2    +      -       +      +
    218F  LEU*     3.4     1.0    +      -       +      -
    219F  GLU*     2.9    50.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 216 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77D  ARG*     3.7    33.7    +      -       +      +
    212F  LYS*     3.1    54.8    +      -       +      +
    213F  GLU*     3.8     8.7    +      -       -      +
    215F  ILE*     1.3    77.6    -      -       +      +
    217F  ASP*     1.3    57.3    +      -       -      +
    219F  GLU*     3.4    15.5    +      -       -      +
    220F  SER*     2.8    31.0    +      -       -      -
    277F  VAL*     3.8    16.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 217 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  ARG*     6.1     0.7    -      -       -      -
     76D  TYR*     3.6    42.6    +      -       +      +
     77D  ARG*     2.5    36.3    -      -       -      -
    195F  VAL*     4.8     9.3    -      -       +      +
    213F  GLU*     2.8    25.8    +      -       -      +
    214F  MET*     3.6     9.3    -      -       -      +
    216F  LYS*     1.3    75.7    -      -       -      +
    218F  LEU*     1.3    52.7    +      -       -      +
    220F  SER*     2.7    23.9    +      -       -      -
    221F  ILE*     2.7    29.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 218 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161F  VAL*     3.5    39.3    -      -       +      +
    164F  LEU*     3.5    21.8    -      -       +      -
    165F  ALA*     3.8    18.2    -      -       +      +
    168F  ALA*     5.5     1.1    -      -       +      -
    192F  VAL*     4.1    29.3    -      -       +      +
    195F  VAL*     3.7    27.8    -      -       +      -
    196F  LEU*     4.4     3.8    -      -       +      -
    214F  MET*     2.9    23.3    +      -       +      +
    215F  ILE*     5.0     0.7    -      -       -      -
    217F  ASP*     1.3    77.1    -      -       -      +
    219F  GLU*     1.3    62.0    +      -       -      +
    221F  ILE*     3.2     6.1    +      -       +      +
    222F  ILE*     3.1    27.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 219 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164F  LEU*     3.7    18.2    -      -       +      +
    215F  ILE*     2.9    36.9    +      -       -      +
    216F  LYS*     3.7    15.4    -      -       -      +
    218F  LEU*     1.3    74.6    -      -       -      +
    220F  SER*     1.3    64.3    +      -       -      +
    222F  ILE*     3.2     8.6    +      -       -      +
    223F  GLU*     2.9    33.9    +      -       -      +
    277F  VAL*     3.8    17.2    -      -       +      +
   2004F  IMD      5.3     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 220 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  TYR*     4.3     1.9    +      -       -      -
     77D  ARG*     3.8    19.1    +      -       -      -
    216F  LYS      2.8    15.4    +      -       -      -
    217F  ASP*     2.7    20.6    +      -       -      -
    219F  GLU*     1.3    76.4    -      -       -      +
    221F  ILE*     1.3    61.3    +      -       -      +
    223F  GLU*     3.4    10.7    +      -       -      -
    224F  ASP*     2.9    34.3    +      -       -      +
    277F  VAL*     4.0     5.8    -      -       -      +
    278F  LYS*     3.6    27.8    -      -       -      +
    280F  TYR*     3.3     3.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 221 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  TYR*     3.8    27.6    -      -       +      +
    188F  LEU*     3.6    26.0    -      -       +      +
    191F  LYS*     3.7    45.0    +      -       +      +
    192F  VAL*     3.9    12.8    -      -       +      +
    195F  VAL*     3.8    26.0    -      -       +      -
    217F  ASP      2.7    24.7    +      -       -      +
    218F  LEU*     3.6     8.1    -      -       +      +
    219F  GLU      3.2     0.2    -      -       -      -
    220F  SER*     1.3    73.3    +      -       -      +
    222F  ILE*     1.3    63.3    +      -       -      +
    224F  ASP*     3.4     9.9    +      -       -      +
    225F  PHE*     3.3    15.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 222 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164F  LEU*     3.5    32.1    -      -       +      -
    167F  LYS*     5.0     1.6    -      -       +      -
    168F  ALA*     3.8    35.4    -      -       +      +
    171F  VAL*     5.1     4.7    -      -       +      -
    188F  LEU*     4.2     8.3    -      -       +      -
    218F  LEU*     3.1    15.3    +      -       +      +
    219F  GLU*     3.6     7.9    -      -       -      +
    221F  ILE*     1.3    73.9    -      -       +      +
    223F  GLU*     1.3    67.6    +      -       -      +
    225F  PHE*     3.1    11.3    +      -       -      +
    226F  PHE*     3.1    40.7    -      -       +      -
    233F  LYS*     4.0    15.9    -      -       +      -
    237F  ILE*     5.0     7.2    -      -       +      -
   2004F  IMD      4.3    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 223 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219F  GLU*     2.9    23.1    +      -       +      +
    220F  SER*     3.7     2.9    -      -       -      +
    222F  ILE*     1.3    75.2    -      -       +      +
    224F  ASP*     1.3    58.8    +      -       -      +
    226F  PHE*     3.2     5.6    +      -       -      +
    227F  ILE*     2.8    32.4    +      -       -      +
    233F  LYS*     3.8    30.9    -      -       +      -
    272F  TRP*     4.0    13.9    -      -       +      +
    275F  LYS      4.1     4.3    -      -       -      +
    276F  THR*     3.3    25.7    -      -       +      +
    277F  VAL*     2.8    36.9    +      -       -      +
    278F  LYS      4.5     0.7    +      -       -      -
    280F  TYR*     3.6    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 224 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  TYR*     4.0     6.2    +      -       -      -
    191F  LYS*     2.6    30.6    +      -       -      +
    220F  SER      2.9    20.4    +      -       -      +
    221F  ILE*     3.4    12.2    -      -       -      +
    223F  GLU*     1.3    75.8    -      -       -      +
    225F  PHE*     1.3    64.7    +      -       -      +
    227F  ILE*     4.3     4.3    -      -       -      -
    228F  GLU*     2.9    44.6    +      -       -      +
    278F  LYS*     2.9    28.8    +      -       -      +
    280F  TYR*     2.6    29.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 225 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171F  VAL*     3.6    24.7    -      -       +      -
    175F  PHE*     3.7    29.8    -      +       +      -
    181F  HIS*     4.2     2.5    -      -       +      -
    184F  GLU*     3.4    25.1    -      -       +      +
    185F  ALA*     3.7    24.9    -      -       +      -
    188F  LEU*     4.1    22.4    -      -       +      -
    221F  ILE      3.3     6.9    +      -       -      +
    222F  ILE      3.1    11.5    +      -       -      +
    224F  ASP*     1.3    80.5    -      -       -      +
    226F  PHE*     1.3    81.1    +      +       +      +
    228F  GLU*     4.0     2.9    -      -       -      +
    229F  THR*     2.9    58.6    +      -       +      +
    231F  LEU*     4.2     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 226 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171F  VAL*     4.0    22.0    -      -       +      -
    222F  ILE*     3.1    39.2    +      -       +      -
    223F  GLU*     3.2     3.4    +      -       -      +
    225F  PHE*     1.3    93.7    -      +       -      +
    227F  ILE*     1.3    66.6    +      -       -      +
    229F  THR*     3.7     2.7    -      -       -      -
    230F  GLY*     3.0    19.4    +      -       -      -
    231F  LEU*     3.1    37.0    +      -       +      +
    232F  ASN      3.4    25.8    -      -       -      -
    233F  LYS*     3.8    22.2    -      -       +      -
    234F  PRO*     3.9    13.9    -      -       +      -
    237F  ILE*     5.1     0.4    -      -       +      -
    265F  VAL*     3.9    16.2    -      -       +      -
    272F  TRP*     3.4    18.4    -      -       +      -
    273F  LYS*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 227 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223F  GLU      2.8    21.6    +      -       -      +
    224F  ASP      3.6     3.6    -      -       -      +
    226F  PHE*     1.3    77.9    -      -       -      +
    228F  GLU*     1.3    69.2    +      -       +      +
    230F  GLY*     3.6     8.1    +      -       -      -
    272F  TRP*     3.7    20.9    -      -       +      -
    273F  LYS*     4.8    15.7    -      -       +      +
    276F  THR*     4.9     1.3    -      -       +      -
    280F  TYR*     3.5    61.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 228 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  LYS*     3.6    28.0    +      -       -      -
    110D  LYS*     3.2    29.5    +      -       -      +
    184F  GLU*     4.2    14.5    -      -       +      +
    187F  GLU*     4.2     6.6    -      -       -      +
    191F  LYS*     4.8     3.8    +      -       -      -
    224F  ASP*     2.9    38.4    +      -       -      +
    225F  PHE*     4.1     3.3    -      -       -      +
    227F  ILE*     1.3    82.0    -      -       +      +
    229F  THR*     1.3    61.8    +      -       -      +
    230F  GLY      3.2     1.6    -      -       -      -
    280F  TYR*     5.7     1.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 229 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181F  HIS*     3.2    45.1    -      -       +      +
    184F  GLU*     3.4    32.1    -      -       +      -
    225F  PHE*     2.9    34.9    +      -       +      +
    226F  PHE*     3.5     2.6    +      -       -      -
    228F  GLU*     1.3    75.8    -      -       -      +
    230F  GLY*     1.3    62.6    +      -       -      +
    231F  LEU*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 230 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226F  PHE      3.0     9.2    +      -       -      -
    227F  ILE      3.6     6.7    +      -       -      -
    228F  GLU      3.2     3.6    +      -       -      -
    229F  THR*     1.3    79.9    -      -       -      +
    231F  LEU*     1.3    65.2    +      -       -      +
    232F  ASN*     4.2     3.3    +      -       -      -
    273F  LYS*     5.7     5.5    +      -       -      -
----------------------------------------------------------
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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