Contacts of the helix formed by residues 204 - 228 (chain A) in PDB entry 4JR8


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with GLY 204 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197A  THR*     4.6     1.8    -      -       -      -
    202A  LEU      4.0     1.8    +      -       -      -
    203A  VAL*     1.3    76.8    -      -       -      +
    205A  ILE*     1.3    61.0    +      -       -      -
    206A  GLY      3.2     3.9    +      -       -      -
    207A  ILE*     3.4     9.2    +      -       -      +
    208A  GLU*     2.9    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 205 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  GLU*     4.8     6.1    -      -       -      +
      7A  GLU*     3.2    30.5    -      -       +      +
     75A  PRO*     4.7    16.4    -      -       +      +
     77A  TYR*     3.8    29.6    -      -       +      -
     80A  ARG*     6.2     0.2    -      -       -      +
    197A  THR*     3.7    27.6    -      -       +      +
    204A  GLY*     1.3    70.2    -      -       -      -
    206A  GLY*     1.3    59.5    +      -       -      +
    208A  GLU*     4.2    11.7    -      -       -      +
    209A  THR*     2.7    63.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 206 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  GLY      4.8     3.8    -      -       -      -
      7A  GLU*     4.0    19.5    -      -       -      -
     10A  TRP*     3.2    18.7    +      -       -      -
    204A  GLY      3.2     1.4    -      -       -      -
    205A  ILE*     1.3    83.6    -      -       -      +
    207A  ILE*     1.3    60.5    +      -       -      +
    210A  ALA      3.1    17.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 207 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  TRP*     3.7    15.1    -      -       +      -
    203A  VAL*     3.6    22.9    -      -       +      -
    204A  GLY*     3.4     7.7    +      -       -      +
    206A  GLY*     1.3    71.5    -      -       -      +
    208A  GLU*     1.3    68.0    +      -       -      +
    210A  ALA*     3.1     9.3    +      -       +      +
    211A  GLY      2.9    18.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 208 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  ARG*     5.2     0.9    +      -       -      -
    192A  TRP*     2.9    38.3    +      -       +      +
    193A  TRP*     5.4     0.3    -      -       -      -
    196A  GLY*     4.0    10.3    -      -       -      -
    197A  THR*     2.7    40.9    +      -       -      +
    198A  GLU*     2.6    23.4    -      -       -      +
    203A  VAL*     3.5     8.4    -      -       +      +
    204A  GLY      2.9    18.2    +      -       -      +
    205A  ILE*     3.7     9.9    -      -       -      +
    207A  ILE*     1.3    77.2    -      -       -      +
    209A  THR*     1.3    63.3    +      -       -      +
    211A  GLY      3.1     0.9    +      -       -      -
    212A  PHE*     3.0    38.8    +      -       +      -
----------------------------------------------------------
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Residues in contact with THR 209 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  GLU*     3.5    12.9    -      -       +      +
     10A  TRP*     3.7    17.7    -      -       +      -
     11A  LEU*     3.6    36.1    -      -       +      +
     55A  TYR*     5.1     1.1    +      -       +      -
     77A  TYR*     4.9     1.4    -      -       -      -
     80A  ARG*     3.9    16.3    +      -       -      +
    205A  ILE*     2.7    46.6    +      -       -      +
    206A  GLY      3.8     3.8    -      -       -      -
    208A  GLU*     1.3    73.4    -      -       -      +
    210A  ALA*     1.3    63.0    +      -       -      +
    212A  PHE*     3.3     3.2    +      -       -      +
    213A  MET*     3.0    22.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 210 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  TRP*     3.6    41.4    -      -       +      -
    206A  GLY      3.1    14.3    +      -       -      +
    207A  ILE*     3.3    13.5    -      -       +      +
    209A  THR*     1.3    75.9    -      -       -      +
    211A  GLY*     1.3    63.8    +      -       -      +
    213A  MET*     3.2     7.7    +      -       +      +
    214A  VAL*     3.1    25.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 211 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  TRP*     3.6    20.9    -      -       -      -
    207A  ILE      2.9    12.5    +      -       -      -
    208A  GLU      3.1     3.3    +      -       -      -
    210A  ALA*     1.3    74.6    -      -       -      +
    212A  PHE*     1.3    65.8    +      -       -      +
    214A  VAL*     2.9    19.1    +      -       -      +
    215A  ILE*     3.1    17.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 212 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  TYR*     3.8     1.8    -      -       -      -
     80A  ARG*     3.5    43.5    -      -       -      +
     84A  TRP*     3.9    20.0    -      +       -      -
    189A  TYR*     3.8    32.1    -      +       -      -
    192A  TRP*     3.6    16.9    -      +       +      +
    193A  TRP*     4.4    17.9    -      +       +      -
    198A  GLU*     3.8    12.6    -      -       -      -
    208A  GLU*     3.0    52.3    +      -       +      -
    209A  THR*     3.8     2.0    -      -       -      +
    211A  GLY*     1.3    74.2    -      -       -      +
    213A  MET*     1.3    57.5    +      -       -      +
    215A  ILE*     3.4    16.3    -      -       +      +
    216A  ASP*     2.8    37.7    +      -       -      +
    301A  RET      5.5     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 213 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  TRP*     3.6    51.1    -      -       +      +
     13A  LEU*     3.7    24.5    -      -       +      -
     14A  GLY*     4.0    10.1    -      -       -      -
     55A  TYR*     3.4    14.7    +      -       +      +
    209A  THR      3.0    13.9    +      -       -      +
    210A  ALA*     3.2    20.2    -      -       +      +
    211A  GLY      3.0     0.2    -      -       -      -
    212A  PHE*     1.3    78.5    -      -       -      +
    214A  VAL*     1.3    75.4    +      -       +      +
    216A  ASP*     4.0     0.3    -      -       -      +
    217A  LEU*     3.1    50.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 214 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  ALA*     3.1    17.2    +      -       +      +
    211A  GLY*     2.9     9.7    +      -       -      +
    213A  MET*     1.3    90.2    -      -       +      +
    215A  ILE*     1.3    66.0    +      -       +      +
    217A  LEU*     3.4     5.1    +      -       -      +
    218A  VAL*     3.0    43.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 215 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  VAL*     3.7    24.0    -      -       +      +
    188A  VAL*     4.0    30.5    -      -       +      -
    189A  TYR*     3.3    41.3    -      -       +      +
    192A  TRP*     4.7     5.4    -      -       +      -
    211A  GLY      3.1    11.3    +      -       -      +
    212A  PHE*     3.4    25.8    -      -       +      +
    214A  VAL*     1.3    77.4    -      -       +      +
    216A  ASP*     1.3    59.9    +      -       -      +
    218A  VAL*     3.7     5.1    -      -       +      +
    219A  ALA*     2.7    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 216 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  MET*     3.7    16.6    -      -       +      -
     55A  TYR*     2.6    32.9    +      -       +      +
     80A  ARG*     3.7    12.1    +      -       -      -
     83A  ASP*     5.3     1.0    -      -       -      +
     84A  TRP*     3.9     8.1    +      -       -      -
    189A  TYR*     2.6    37.7    +      -       -      -
    212A  PHE*     2.8    21.6    +      -       -      +
    213A  MET      4.0     1.8    -      -       -      +
    215A  ILE*     1.3    76.2    -      -       -      +
    217A  LEU*     1.3    58.0    +      -       -      +
    219A  ALA*     3.3     1.0    +      -       -      -
    220A  LYS*     3.0    45.2    +      -       +      +
    301A  RET      3.8     7.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 217 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LEU      5.0     3.8    -      -       -      +
     14A  GLY*     4.6     6.3    -      -       -      +
     17A  GLY*     4.1    22.4    -      -       -      -
     18A  MET*     3.7    22.7    -      -       +      +
     55A  TYR*     6.4     0.2    -      -       +      -
    213A  MET*     3.1    46.7    +      -       +      +
    214A  VAL*     3.8     5.4    -      -       -      +
    216A  ASP*     1.3    80.0    -      -       -      +
    218A  VAL*     1.3    57.9    +      -       +      +
    221A  VAL*     2.9    29.6    +      -       +      +
    222A  GLY      2.9    22.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 218 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  LEU*     3.9    29.6    -      -       +      +
    185A  VAL*     4.6     9.6    -      -       +      -
    214A  VAL*     3.0    39.8    +      -       +      +
    215A  ILE*     3.7     7.4    -      -       +      +
    217A  LEU*     1.3    76.6    -      -       +      +
    219A  ALA*     1.3    57.6    +      -       -      +
    222A  GLY*     3.3     7.4    -      -       -      +
    223A  PHE*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 219 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  LEU*     3.7    16.8    -      -       -      +
    181A  LEU*     5.5     1.3    -      -       -      -
    185A  VAL*     4.3    21.3    -      -       +      -
    186A  TRP*     4.5     3.5    +      -       -      +
    189A  TYR*     3.8     4.7    -      -       -      +
    215A  ILE      2.7    21.8    +      -       -      +
    216A  ASP*     3.8     4.0    -      -       -      +
    218A  VAL*     1.3    74.5    -      -       -      +
    220A  LYS*     1.3    58.9    +      -       -      +
    223A  PHE*     3.1    18.9    -      -       -      +
    301A  RET      3.8    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 220 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  MET*     3.4    27.1    -      -       +      -
     25A  PHE*     4.1     5.2    -      -       -      -
     44A  THR*     4.9     2.6    -      -       -      +
     47A  ILE*     3.6    23.5    -      -       +      +
     48A  THR*     4.8     3.8    -      -       +      -
     51A  ALA*     3.7    21.3    -      -       +      -
     83A  ASP*     3.7    14.5    +      -       -      -
     84A  TRP*     4.2     1.0    -      -       -      +
     87A  THR*     3.7    13.3    +      -       -      -
     91A  LEU*     4.3     3.7    -      -       +      +
    216A  ASP*     3.0    24.1    +      -       -      +
    218A  VAL      3.2     0.4    -      -       -      -
    219A  ALA*     1.3    80.1    -      -       -      +
    221A  VAL*     1.3    56.9    +      -       +      +
    222A  GLY      3.4     0.2    -      -       -      -
    223A  PHE*     3.8     2.1    -      -       -      +
    224A  GLY*     2.6    32.2    +      -       -      -
    301A  RET      1.4    72.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 221 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  GLY      4.0    14.6    -      -       -      +
     18A  MET*     4.4    11.2    -      -       -      -
     21A  GLY*     4.4    17.0    -      -       -      -
     24A  TYR*     6.0     0.9    -      -       +      -
     25A  PHE*     3.5    13.8    -      -       +      -
     48A  THR*     4.4     5.2    -      -       +      -
    217A  LEU*     2.9    34.9    +      -       +      +
    220A  LYS*     1.3    72.2    -      -       -      +
    222A  GLY*     1.3    55.2    +      -       -      +
    224A  GLY*     3.0     1.6    +      -       -      -
    225A  ILE*     2.6    57.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 222 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  LEU*     4.7     1.6    -      -       -      -
    217A  LEU      2.9    11.6    +      -       -      -
    218A  VAL*     3.3    13.2    -      -       -      -
    221A  VAL*     1.3    77.5    -      -       -      +
    223A  PHE*     1.3    61.7    +      -       -      +
    225A  ILE*     3.3    11.2    +      -       -      +
    226A  ILE*     3.1    33.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 223 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  THR*     5.7     1.6    -      -       +      -
     91A  LEU*     3.5    42.6    -      -       +      -
     94A  ASP*     3.8    26.0    -      -       +      -
     95A  LEU*     4.3    10.5    -      -       +      -
    178A  LEU*     3.7    34.8    -      -       +      +
    181A  LEU*     4.1    15.7    -      -       +      +
    182A  VAL*     3.7    31.0    -      -       +      -
    218A  VAL      2.9     7.8    +      -       -      +
    219A  ALA*     3.1    28.0    -      -       -      +
    220A  LYS      3.8     1.8    -      -       -      +
    222A  GLY*     1.3    75.6    -      -       -      +
    224A  GLY*     1.3    63.1    +      -       -      +
    226A  ILE      3.4     0.3    +      -       -      -
    227A  LEU*     2.9    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 224 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  PHE*     3.5    17.5    -      -       -      -
     44A  THR*     3.9    14.1    -      -       -      -
    220A  LYS      2.6    22.5    +      -       -      -
    221A  VAL      3.3     1.1    -      -       -      -
    223A  PHE*     1.3    75.3    -      -       -      +
    225A  ILE*     1.3    65.7    +      -       -      +
    227A  LEU*     3.3     3.3    +      -       -      +
    228A  LEU*     3.1    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 225 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  TYR*     4.5    20.9    -      -       +      +
     25A  PHE*     3.6    10.0    -      -       +      -
     28A  ARG*     5.8     1.0    -      -       -      +
    221A  VAL*     2.6    44.7    +      -       +      +
    222A  GLY*     3.7     9.0    -      -       -      +
    224A  GLY*     1.3    73.4    -      -       -      +
    226A  ILE*     1.3    67.6    +      -       +      +
    228A  LEU*     3.9     1.9    -      -       -      -
    229A  ARG*     3.4    37.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 226 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  THR*     4.1    16.6    -      -       +      +
    177A  THR*     4.6    22.2    -      -       +      -
    178A  LEU*     3.6    19.5    -      -       +      -
    181A  LEU*     4.2    22.0    -      -       +      -
    222A  GLY*     3.1    18.2    +      -       -      +
    223A  PHE      3.8     3.4    -      -       -      +
    225A  ILE*     1.3    81.4    -      -       +      +
    227A  LEU*     1.3    62.7    +      -       -      +
    228A  LEU      3.5     0.2    +      -       -      -
    229A  ARG*     3.6    13.4    +      -       -      +
    230A  SER      5.1     0.7    +      -       -      -
    233A  VAL*     5.4     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 227 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  PHE*     3.9    13.9    -      -       +      -
     44A  THR*     3.8     5.4    -      -       +      +
     94A  ASP*     3.4    43.5    -      -       +      +
     98A  LEU*     4.0    26.7    -      -       +      -
    174A  THR*     4.7     2.0    -      -       +      -
    178A  LEU*     3.7    26.5    -      -       +      -
    223A  PHE*     2.9    25.4    +      -       +      +
    224A  GLY      3.3     3.3    +      -       -      +
    226A  ILE*     1.3    79.5    -      -       -      +
    228A  LEU*     1.3    77.5    +      -       +      +
    229A  ARG      3.7     0.7    +      -       -      -
    230A  SER      4.5     0.9    -      -       -      +
    233A  VAL*     4.0    18.0    -      -       -      +
    234A  LEU*     4.6     5.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 228 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  PHE*     3.9    23.8    -      -       +      -
     28A  ARG*     2.7    32.0    +      -       +      +
     40A  PHE*     3.9    19.7    -      -       +      -
     41A  TYR*     3.5    41.1    +      -       +      +
     44A  THR*     4.0    19.5    -      -       +      +
    224A  GLY      3.1    19.7    +      -       -      +
    225A  ILE*     3.9     2.9    -      -       -      +
    227A  LEU*     1.3   103.2    -      -       +      +
    229A  ARG*     1.3    60.0    +      -       -      +
    230A  SER      3.4     4.8    -      -       -      -
    231A  HIS*     5.2     1.5    -      -       -      -
    234A  LEU*     4.3    10.3    -      -       +      -
----------------------------------------------------------
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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