Contacts of the helix formed by residues 216 - 246 (chain A) in PDB entry 1QUU


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 THR 216 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  PHE*     4.2     4.7    -      -       -      -
    213A  SER      5.9     0.4    -      -       -      +
    214A  THR      3.6    12.6    -      -       -      +
    215A  VAL*     1.3    80.3    -      -       -      +
    217A  MET*     1.3    60.8    +      -       -      +
    218A  ASP*     3.2    16.6    +      -       -      +
    219A  GLU*     2.7    36.0    +      -       -      +
    220A  LEU*     3.1    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 217 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  PHE*     3.5    21.4    -      -       +      -
    188A  ILE*     3.1    27.8    -      -       +      +
    189A  MET*     3.0    63.4    -      -       +      +
    192A  GLN*     4.0    24.6    +      -       +      +
    216A  THR*     1.3    73.0    -      -       -      +
    218A  ASP*     1.3    68.6    +      -       -      +
    220A  LEU*     3.2    18.5    +      -       -      -
    221A  ARG*     3.1    18.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 218 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216A  THR*     3.2     9.3    +      -       -      +
    217A  MET*     1.3    76.6    -      -       -      +
    219A  GLU*     1.3    68.7    +      -       -      +
    221A  ARG*     2.8    24.7    +      -       -      +
    222A  THR*     3.2    15.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 219 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  THR      3.0     6.4    -      -       -      +
    215A  VAL*     2.9    18.6    -      -       +      +
    216A  THR*     2.7    49.1    +      -       -      +
    218A  ASP*     1.3    82.3    -      -       -      +
    220A  LEU*     1.3    59.9    +      -       -      +
    221A  ARG      3.2     0.2    -      -       -      -
    222A  THR*     3.6    11.6    -      -       +      -
    223A  LYS*     3.4    36.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 220 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  PHE*     4.5     4.0    -      -       +      -
    138A  ALA*     4.0    30.7    -      -       +      +
    141A  PHE*     3.4    31.6    -      -       +      -
    142A  ASN*     5.3     1.6    -      -       -      +
    145A  MET*     3.0    29.0    -      -       +      +
    185A  ARG*     4.7     8.1    -      -       +      -
    188A  ILE*     4.2    14.6    -      -       +      -
    215A  VAL*     4.1    18.2    -      -       +      -
    216A  THR      3.1    16.9    +      -       -      +
    217A  MET*     3.2    23.8    +      -       +      +
    218A  ASP      3.0     1.2    -      -       -      -
    219A  GLU*     1.3    77.2    -      -       -      +
    221A  ARG*     1.3    62.0    +      -       -      +
    223A  LYS*     4.1     1.8    -      -       -      -
    224A  TRP*     3.7     3.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 221 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  ARG*     2.9    35.9    -      -       -      +
    189A  MET*     3.4    28.7    -      -       +      +
    217A  MET*     3.1     9.4    +      -       -      +
    218A  ASP*     2.8    11.0    +      -       -      +
    220A  LEU*     1.3    79.3    -      -       -      +
    222A  THR*     1.3    67.6    +      -       -      +
    223A  LYS      3.1     1.3    -      -       -      -
    224A  TRP*     2.8    17.9    +      -       -      +
    225A  ASP*     3.0    24.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 222 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218A  ASP*     3.2    15.0    +      -       -      -
    219A  GLU*     3.6    17.0    -      -       -      +
    221A  ARG*     1.3    79.3    -      -       -      +
    223A  LYS*     1.3    66.6    +      -       +      +
    225A  ASP*     3.2    14.2    +      -       -      +
    226A  LYS*     3.2    42.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 223 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  ASN*     2.5    42.3    +      -       -      +
    145A  MET*     3.6    22.4    -      -       +      -
    146A  GLU*     2.9    20.2    +      -       -      +
    149A  MET*     4.0    18.9    -      -       +      +
    215A  VAL*     4.6     8.7    -      -       -      +
    219A  GLU*     3.4    23.1    +      -       -      +
    220A  LEU*     5.0     0.9    -      -       -      -
    221A  ARG      3.1     0.4    -      -       -      -
    222A  THR*     1.3    79.9    -      -       +      +
    224A  TRP*     1.3    63.7    +      -       -      +
    226A  LYS*     3.1    11.3    +      -       -      +
    227A  VAL*     2.9    23.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 224 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  PHE*     3.9    20.4    -      +       -      -
    144A  TRP*     4.1    28.5    -      +       -      -
    145A  MET*     3.2    17.2    -      -       +      -
    178A  LEU*     3.2    35.2    -      -       +      -
    181A  ALA      4.4     0.9    -      -       -      -
    182A  ASP*     3.3    38.8    +      -       +      -
    185A  ARG*     3.7    39.0    -      -       +      +
    220A  LEU      4.0     5.6    -      -       -      +
    221A  ARG      2.8    14.7    +      -       -      +
    223A  LYS*     1.3    76.1    -      -       -      +
    225A  ASP*     1.3    64.8    +      -       -      +
    227A  VAL*     3.3    10.6    -      -       +      +
    228A  LYS*     2.9    42.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 225 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  ARG*     5.2     0.9    +      -       -      -
    221A  ARG*     3.0    29.0    +      -       -      +
    222A  THR*     3.4    14.2    -      -       -      +
    223A  LYS      3.1     0.4    -      -       -      -
    224A  TRP*     1.3    81.9    -      -       -      +
    226A  LYS*     1.3    67.0    +      -       +      +
    228A  LYS*     3.0    12.2    +      -       -      +
    229A  GLN*     2.7    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 226 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  MET*     4.3    16.8    -      -       +      -
    222A  THR*     3.2    39.2    -      -       +      +
    223A  LYS*     3.1     8.0    +      -       -      +
    225A  ASP*     1.3    83.3    +      -       +      +
    227A  VAL*     1.3    68.5    +      -       -      +
    229A  GLN*     3.1    25.7    +      -       -      +
    230A  LEU*     2.8    35.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 227 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  TRP*     4.0    24.5    -      -       +      -
    145A  MET*     3.9    20.9    -      -       +      +
    148A  ALA*     4.6     4.0    -      -       +      -
    149A  MET*     3.8    22.0    -      -       +      +
    152A  LEU*     3.9    19.0    -      -       +      +
    174A  PHE*     4.8     4.0    -      -       +      -
    178A  LEU*     5.5     4.3    -      -       +      -
    223A  LYS      2.9    20.3    +      -       -      +
    224A  TRP*     3.3    18.6    -      -       +      +
    226A  LYS*     1.3    78.5    -      -       -      +
    228A  LYS*     1.3    58.7    +      -       -      +
    230A  LEU*     4.8     0.7    -      -       -      -
    231A  VAL*     2.9    29.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 228 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178A  LEU*     5.6     4.7    -      -       +      -
    224A  TRP*     2.9    33.3    +      -       +      +
    225A  ASP*     3.0    15.2    +      -       -      +
    227A  VAL*     1.3    77.9    -      -       -      +
    229A  GLN*     1.3    56.4    +      -       -      +
    231A  VAL*     3.5    10.9    -      -       +      +
    232A  PRO*     3.1    20.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 229 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225A  ASP      2.7    18.9    +      -       -      +
    226A  LYS*     3.1    25.6    +      -       -      +
    228A  LYS*     1.3    71.4    -      -       -      +
    230A  LEU*     1.3    84.2    +      -       -      +
    232A  PRO*     3.0    21.4    -      -       +      +
    233A  ILE*     3.4    20.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 230 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  MET*     3.5    22.2    -      -       +      +
    152A  LEU*     4.0    18.8    -      -       +      +
    153A  GLN*     3.2    48.7    -      -       +      +
    226A  LYS*     2.8    25.2    +      -       +      +
    227A  VAL*     4.0     3.8    -      -       -      +
    228A  LYS      3.3     0.4    -      -       -      -
    229A  GLN*     1.3    99.9    -      -       -      +
    231A  VAL*     1.3    70.9    +      -       -      +
    232A  PRO*     2.7     5.2    -      -       -      -
    233A  ILE*     2.7    26.3    +      -       +      +
    234A  ARG*     3.1    11.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 231 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152A  LEU*     4.3    12.5    -      -       +      +
    171A  HIS*     4.7     5.6    -      -       +      -
    174A  PHE*     5.0     2.2    -      -       +      -
    175A  LYS*     4.1    30.1    -      -       +      +
    178A  LEU*     3.7    37.7    -      -       +      -
    227A  VAL*     2.9    21.3    -      -       +      +
    228A  LYS*     3.5     8.7    -      -       -      +
    230A  LEU*     1.3    77.9    -      -       -      +
    232A  PRO*     1.3    58.2    -      -       +      +
    234A  ARG*     3.5     6.5    -      -       -      +
    235A  ASP*     2.7    36.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 232 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228A  LYS      3.1    17.7    -      -       -      +
    229A  GLN*     3.0    20.0    -      -       -      +
    230A  LEU      3.0     3.1    -      -       -      -
    231A  VAL*     1.3    89.1    -      -       +      +
    233A  ILE*     1.3    68.5    +      -       +      +
    234A  ARG      3.1     2.7    +      -       -      -
    235A  ASP*     3.0    29.1    +      -       -      +
    236A  GLN*     3.3     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 233 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  GLN*     3.4    36.6    -      -       +      +
    230A  LEU*     2.7    19.2    +      -       +      +
    232A  PRO*     1.3    74.2    -      -       +      +
    234A  ARG*     1.3    63.3    +      -       -      +
    236A  GLN*     3.6     8.2    -      -       +      +
    237A  SER*     3.3    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 234 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  ASP      3.6    20.3    +      -       -      -
    152A  LEU*     3.7    28.6    +      -       +      +
    153A  GLN*     4.5     1.0    -      -       -      +
    154A  ASP*     3.0    30.9    +      -       -      +
    156A  PHE*     4.1    23.2    -      -       -      +
    167A  LEU*     4.8    14.3    -      -       -      +
    171A  HIS*     3.1    35.2    -      -       +      +
    230A  LEU      3.1     9.3    +      -       -      +
    231A  VAL*     3.5    12.1    -      -       -      +
    233A  ILE*     1.3    75.3    -      -       -      +
    235A  ASP*     1.3    67.0    +      -       -      +
    237A  SER*     2.9     9.3    +      -       -      -
    238A  LEU*     2.8    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 235 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168A  ILE*     5.2     1.7    -      -       -      +
    171A  HIS*     3.4    22.3    -      -       -      -
    175A  LYS*     4.9     8.3    +      -       -      +
    231A  VAL*     2.7    29.8    -      -       -      +
    232A  PRO*     3.0    17.9    -      -       -      +
    234A  ARG*     1.3    74.4    -      -       -      +
    236A  GLN*     1.3    51.3    +      -       -      +
    238A  LEU*     3.2     5.9    +      -       -      +
    239A  GLN*     2.7    50.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 236 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  PRO      3.3     8.0    +      -       -      +
    233A  ILE*     3.6    14.2    -      -       +      +
    235A  ASP*     1.3    75.9    -      -       -      +
    237A  SER*     1.3    52.7    +      -       -      +
    239A  GLN*     2.7    38.1    +      -       -      +
    240A  GLU*     2.8    50.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 237 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  PHE*     3.7    26.2    -      -       -      -
    233A  ILE*     3.3    13.9    +      -       -      +
    234A  ARG*     2.9    14.1    +      -       -      -
    236A  GLN*     1.3    77.5    -      -       -      +
    238A  LEU*     1.3    63.3    +      -       -      +
    240A  GLU*     3.0    14.4    +      -       -      +
    241A  GLU*     3.1    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 238 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  PHE*     3.8    24.0    -      -       +      -
    164A  ILE*     3.4    31.8    -      -       +      +
    167A  LEU*     4.2    18.4    -      -       +      -
    168A  ILE*     3.1    43.8    -      -       +      +
    171A  HIS*     4.1    22.0    -      -       +      +
    234A  ARG*     2.8    41.6    +      -       +      +
    235A  ASP*     3.7     4.9    -      -       -      +
    237A  SER*     1.3    70.7    -      -       -      +
    239A  GLN*     1.3    67.4    +      -       -      +
    241A  GLU*     4.5     0.4    -      -       -      -
    242A  LEU*     3.4    13.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 239 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168A  ILE*     4.5     4.9    -      -       +      +
    235A  ASP*     2.7    37.2    +      -       +      +
    236A  GLN*     2.7    22.0    +      -       -      +
    238A  LEU*     1.3    69.9    -      -       -      +
    240A  GLU*     1.3    56.6    +      -       +      +
    242A  LEU*     2.7    31.8    +      -       -      +
    243A  ALA*     2.9    11.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 240 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  GLN*     2.8    51.0    +      -       +      +
    237A  SER*     3.0    21.3    +      -       -      +
    239A  GLN*     1.3    76.2    -      -       +      +
    241A  GLU*     1.3    59.9    +      -       -      +
    243A  ALA*     3.4    25.3    +      -       -      +
    244A  ARG*     3.5    10.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 241 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  PHE*     3.4    35.4    -      -       +      -
    158A  VAL*     3.0    25.8    -      -       +      +
    164A  ILE*     3.3    27.1    -      -       +      -
    237A  SER      3.1    11.1    +      -       -      +
    238A  LEU*     4.5     0.7    -      -       -      -
    239A  GLN      2.9     1.0    +      -       -      -
    240A  GLU*     1.3    74.2    -      -       -      +
    242A  LEU*     1.3    66.7    +      -       -      +
    243A  ALA      3.1     0.2    -      -       -      -
    244A  ARG*     3.1    23.6    +      -       -      +
    245A  GLN*     3.2    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 242 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  ILE      4.8     7.4    -      -       -      +
    164A  ILE*     3.7    31.1    -      -       +      +
    165A  GLN*     4.9    10.5    -      -       +      +
    168A  ILE*     5.8    11.7    -      -       +      -
    238A  LEU      3.4     8.3    +      -       -      +
    239A  GLN*     2.7    12.0    +      -       -      +
    241A  GLU*     1.3    73.4    -      -       -      +
    243A  ALA*     1.3    53.4    +      -       -      +
    244A  ARG      2.7    16.9    +      -       -      -
    245A  GLN*     3.1    10.1    +      -       +      +
    246A  HIS*     3.2    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 243 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239A  GLN      2.9    11.3    +      -       -      +
    240A  GLU*     3.5    14.4    -      -       +      +
    241A  GLU      3.1     0.4    -      -       -      -
    242A  LEU*     1.3    73.5    -      -       -      +
    244A  ARG*     1.3    66.8    +      -       -      +
    246A  HIS*     5.7     1.3    -      -       -      -
    247A  ALA*     3.5    15.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 244 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240A  GLU      3.5    10.8    -      -       -      +
    241A  GLU*     3.4    20.7    +      -       -      +
    242A  LEU      2.7     2.4    +      -       -      -
    243A  ALA*     1.3    84.8    -      -       -      +
    245A  GLN*     1.3    76.6    +      -       -      +
    246A  HIS      3.4     1.3    -      -       -      -
    247A  ALA*     3.4    12.0    -      -       -      +
    248A  ASN*     3.4    37.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 245 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158A  VAL*     4.0    10.8    +      -       -      -
    159A  HIS*     3.0     7.0    -      -       -      +
    160A  SER*     2.5    46.1    +      -       -      +
    161A  ILE*     2.7    42.7    -      -       +      +
    164A  ILE*     3.6    16.8    -      -       +      -
    241A  GLU*     3.3    34.5    +      -       -      +
    242A  LEU*     3.1     4.2    +      -       +      +
    244A  ARG*     1.3    84.8    +      -       -      +
    246A  HIS*     1.3    58.8    +      -       +      +
    247A  ALA      3.1     4.3    -      -       -      -
    248A  ASN*     3.9    14.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 246 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  ILE*     3.7    36.5    +      -       +      +
    165A  GLN*     4.4    14.4    +      -       -      -
    242A  LEU*     3.2    33.6    +      -       +      +
    243A  ALA*     5.7     1.1    -      -       -      -
    245A  GLN*     1.3    77.3    -      -       +      +
    247A  ALA*     1.3    56.9    -      -       -      +
    248A  ASN      3.3     4.2    +      -       -      -
----------------------------------------------------------
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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