Contacts of the helix formed by residues 141 - 169 (chain C) in PDB entry 2BWJ


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 PRO 141 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139C  SER      4.7     0.9    -      -       -      +
    140C  LEU*     1.3    92.4    -      -       +      +
    142C  VAL*     1.3    66.9    +      -       -      +
    143C  ASP*     3.2     4.3    -      -       +      +
    144C  ASP*     3.1    28.8    +      -       -      +
    145C  THR*     3.0    19.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 142 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  LEU*     4.2    23.1    -      -       +      -
    140C  LEU      3.8     0.6    +      -       -      -
    141C  PRO*     1.3    72.6    -      -       +      +
    143C  ASP*     1.3    69.2    +      -       -      +
    145C  THR*     3.6     5.8    -      -       -      -
    146C  THR*     2.6    49.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 143 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141C  PRO*     3.1     3.6    +      -       +      +
    142C  VAL*     1.3    91.7    -      -       -      +
    144C  ASP*     1.3    66.5    +      -       -      +
    146C  THR*     3.6     5.0    +      -       -      -
    147C  LYS*     3.0    32.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 144 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140C  LEU*     4.3    21.6    -      -       +      +
    141C  PRO*     3.1    35.3    +      -       -      +
    143C  ASP*     1.3    78.4    -      -       -      +
    145C  THR*     1.3    66.3    +      -       -      +
    147C  LYS*     3.2    19.3    +      -       -      +
    148C  THR*     3.2    16.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 145 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  LEU*     3.9    17.9    -      -       +      -
    136C  SER*     3.6     8.5    -      -       -      +
    138C  SER*     2.6    31.4    +      -       -      -
    140C  LEU*     3.1     8.7    +      -       -      +
    141C  PRO      3.0    13.2    +      -       -      -
    142C  VAL*     3.6    11.6    -      -       -      -
    144C  ASP*     1.3    77.7    -      -       -      +
    146C  THR*     1.3    55.8    +      -       -      +
    148C  THR*     3.4     5.9    +      -       -      -
    149C  ILE*     3.0    27.5    +      -       +      +
     55F  GLU*     3.3    30.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 146 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  THR*     4.2    22.6    -      -       +      +
    133C  LEU*     3.8    11.5    -      -       +      +
    142C  VAL*     2.6    39.7    +      -       -      +
    143C  ASP*     3.9     5.8    -      -       -      -
    145C  THR*     1.3    71.4    -      -       -      +
    147C  LYS*     1.3    59.1    +      -       -      +
    149C  ILE*     3.7     8.9    -      -       -      +
    150C  ALA*     3.0    27.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 147 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143C  ASP*     3.0    26.7    +      -       +      +
    144C  ASP*     3.2     9.1    +      -       -      +
    146C  THR*     1.3    75.5    -      -       -      +
    148C  THR*     1.3    62.4    +      -       -      +
    150C  ALA*     3.3     9.5    +      -       -      +
    151C  LYS*     3.1    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 148 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  ASP      3.2    10.9    +      -       -      -
    145C  THR*     3.6     8.9    -      -       -      -
    146C  THR      3.2     0.4    -      -       -      -
    147C  LYS*     1.3    78.2    -      -       -      +
    149C  ILE*     1.3    63.4    +      -       -      +
    151C  LYS*     2.9    29.3    +      -       +      +
    152C  ARG*     3.0    12.4    +      -       +      +
     55F  GLU*     3.5    41.7    -      -       +      +
     56F  ARG*     3.7    13.2    +      -       +      +
     59F  LEU*     4.5    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 149 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  THR*     4.0    27.8    -      -       +      +
    132C  LEU*     3.8    26.5    -      -       +      -
    133C  LEU*     3.3    50.9    -      -       +      +
    145C  THR*     3.0    21.5    +      -       +      +
    146C  THR*     3.7     8.7    -      -       -      +
    147C  LYS      3.4     0.2    -      -       -      -
    148C  THR*     1.3    76.1    -      -       -      +
    150C  ALA*     1.3    62.7    +      -       -      +
    152C  ARG*     3.0    21.0    +      -       -      +
    153C  LEU*     3.0    16.1    +      -       +      +
     55F  GLU*     3.4    24.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 150 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  THR*     5.7     1.8    -      -       -      +
    146C  THR*     3.0    16.5    +      -       +      +
    147C  LYS*     3.5    12.3    -      -       -      +
    148C  THR      3.2     0.4    -      -       -      -
    149C  ILE*     1.3    75.6    -      -       -      +
    151C  LYS*     1.3    57.1    +      -       +      +
    153C  LEU*     3.4    10.3    +      -       -      +
    154C  GLU*     3.1    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 151 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147C  LYS*     3.1    24.9    +      -       -      +
    148C  THR*     2.9    22.2    +      -       -      +
    150C  ALA*     1.3    73.7    -      -       -      +
    152C  ARG*     1.3    60.9    +      -       -      +
    154C  GLU*     3.5     6.9    +      -       -      +
    155C  ALA*     3.0    29.3    +      -       -      +
     59F  LEU*     3.8    27.3    -      -       +      +
     74F  ILE*     6.4     1.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 152 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  PRO*     3.6    27.0    -      -       +      +
    132C  LEU*     3.9    25.1    +      -       +      +
    148C  THR      3.0    10.2    +      -       -      +
    149C  ILE*     3.0    20.1    +      -       -      +
    151C  LYS*     1.3    75.8    -      -       -      +
    153C  LEU*     1.3    59.9    +      -       +      +
    155C  ALA*     3.5     2.6    +      -       -      +
    156C  TYR*     3.0    26.3    +      -       -      +
     55F  GLU*     2.9    31.2    +      -       -      -
     58F  LYS*     3.6    26.5    -      -       -      +
     59F  LEU*     3.7    36.6    -      -       +      +
     62F  ASP*     2.8    38.3    +      -       -      +
     66F  ARG*     5.3     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 153 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  PRO*     3.9    19.3    -      -       +      +
    125C  ALA*     3.6    31.9    -      -       +      +
    128C  MET*     3.8    34.3    -      -       +      -
    129C  THR*     3.5    24.9    -      -       -      +
    132C  LEU*     4.1     9.0    -      -       +      -
    149C  ILE*     3.0    18.7    +      -       +      +
    150C  ALA*     3.9     7.6    -      -       -      +
    151C  LYS      3.3     0.2    -      -       -      -
    152C  ARG*     1.3    73.6    -      -       -      +
    154C  GLU*     1.3    58.9    +      -       -      +
    156C  TYR*     3.2     6.5    +      -       +      +
    157C  TYR*     2.8    48.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 154 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150C  ALA      3.1    17.3    +      -       -      +
    151C  LYS*     3.8     7.4    -      -       -      +
    153C  LEU*     1.3    76.7    -      -       -      +
    155C  ALA*     1.3    60.8    +      -       -      +
    157C  TYR*     3.2    18.1    +      -       -      +
    158C  ARG*     3.0    54.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 155 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151C  LYS      3.0    17.9    +      -       -      +
    152C  ARG      3.7     4.9    -      -       -      +
    154C  GLU*     1.3    72.7    -      -       -      +
    156C  TYR*     1.3    65.7    +      -       -      +
    158C  ARG*     3.5     7.0    +      -       -      +
    159C  ALA*     3.2    23.0    +      -       -      +
     59F  LEU*     4.4    13.2    -      -       +      -
     62F  ASP*     6.0     0.2    -      -       +      -
     63F  ILE*     4.8     7.0    -      -       +      -
     66F  ARG*     3.5    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 156 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  ILE*     3.6    13.6    -      -       +      +
     18C  GLY*     3.3    36.0    -      -       -      -
     19C  GLY*     3.2    25.7    +      -       -      -
     20C  PRO*     3.7    14.6    -      -       +      -
    120C  CYS*     4.9     2.3    -      -       -      -
    121C  MET      4.3     6.2    +      -       -      -
    128C  MET*     5.0     6.1    -      -       +      -
    152C  ARG      3.0    14.9    +      -       -      +
    153C  LEU*     3.2     8.3    +      -       -      +
    155C  ALA*     1.3    78.3    -      -       -      +
    157C  TYR*     1.3    82.4    +      +       -      +
    159C  ALA*     3.2     3.2    +      -       +      +
    160C  SER*     2.9    56.7    +      -       -      -
    164C  ILE*     4.6     5.4    -      -       -      +
     66F  ARG*     4.2    17.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 157 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  CYS      4.3     3.6    +      -       -      -
    125C  ALA*     3.6    22.9    +      -       +      +
    128C  MET*     3.3    26.8    -      -       +      +
    153C  LEU*     2.8    38.2    +      -       +      +
    154C  GLU*     3.2    19.0    +      -       -      +
    156C  TYR*     1.3    95.6    -      +       -      +
    158C  ARG*     1.3    58.1    +      -       +      +
    160C  SER*     3.7     4.3    -      -       -      -
    161C  ILE*     3.0    57.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 158 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100C  ARG      5.1     0.2    -      -       -      +
    154C  GLU*     3.0    50.0    +      -       -      +
    155C  ALA*     3.9     6.9    -      -       -      +
    156C  TYR      3.3     0.2    -      -       -      -
    157C  TYR*     1.3    75.7    -      -       +      +
    159C  ALA*     1.3    62.0    +      -       -      +
    162C  PRO*     3.2    23.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 159 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99C  PRO      4.7     1.1    -      -       -      +
    100C  ARG*     3.5    21.5    -      -       -      +
    155C  ALA      3.2    17.6    +      -       -      +
    156C  TYR*     3.7     5.6    -      -       +      +
    158C  ARG*     1.3    79.4    -      -       -      +
    160C  SER*     1.3    58.8    +      -       -      +
    162C  PRO*     4.1     2.6    -      -       -      +
    163C  VAL*     3.3    24.1    -      -       -      +
     66F  ARG*     3.9    30.5    -      -       -      +
     68F  ASP*     4.8     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 160 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  ILE*     4.0    13.7    -      -       -      -
    156C  TYR*     2.9    60.9    +      -       -      -
    157C  TYR*     3.7     6.2    -      -       -      -
    159C  ALA*     1.3    79.3    -      -       -      +
    161C  ILE*     1.3    63.5    +      -       -      +
    163C  VAL*     3.3     6.2    +      -       -      +
    164C  ILE*     2.8    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 161 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157C  TYR*     3.0    44.0    +      -       +      +
    158C  ARG*     5.5     0.2    -      -       -      -
    160C  SER*     1.3    81.1    +      -       -      +
    162C  PRO*     1.4    64.2    -      -       +      +
    164C  ILE*     4.0     7.2    -      -       +      +
    165C  ALA*     3.0    30.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 162 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101C  GLU*     6.1     1.8    -      -       -      -
    102C  VAL*     3.2    24.2    -      -       +      +
    157C  TYR      4.1     0.7    -      -       -      +
    158C  ARG*     3.2    25.1    -      -       -      +
    159C  ALA      4.1     2.5    -      -       -      +
    160C  SER      3.7     0.4    -      -       -      -
    161C  ILE*     1.4    99.9    -      -       +      +
    163C  VAL*     1.3    57.9    +      -       +      +
    165C  ALA*     3.9     6.1    -      -       +      +
    166C  TYR*     3.1    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 163 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  ILE*     4.7    15.3    -      -       +      -
     99C  PRO*     3.7    33.9    -      -       +      +
    101C  GLU*     3.6    39.3    -      -       -      +
    102C  VAL*     4.1     5.4    -      -       -      +
    118C  VAL*     6.0     0.7    -      -       +      -
    159C  ALA      3.3    19.1    -      -       -      +
    160C  SER*     3.3    10.5    +      -       -      +
    161C  ILE      3.2     0.6    -      -       -      -
    162C  PRO*     1.3    75.4    -      -       +      +
    164C  ILE*     1.3    66.3    +      -       +      +
    166C  TYR*     3.2     2.2    +      -       -      +
    167C  TYR*     3.0    37.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 164 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  ILE*     4.4    14.4    -      -       +      -
    118C  VAL*     5.7     2.7    -      -       +      -
    120C  CYS*     3.4    31.4    -      -       +      -
    156C  TYR*     4.6     2.0    -      -       -      +
    160C  SER*     2.8    42.3    +      -       -      +
    161C  ILE*     4.1     6.7    -      -       +      +
    163C  VAL*     1.3    74.8    -      -       +      +
    165C  ALA*     1.3    63.2    +      -       -      +
    167C  TYR*     5.0     0.7    -      -       -      -
    168C  GLU*     3.0    24.7    +      -       -      +
    173C  LEU*     3.3    25.6    -      -       +      +
    175C  LYS*     4.1    27.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 165 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161C  ILE*     3.0    21.2    +      -       +      +
    162C  PRO*     3.9     7.4    -      -       +      +
    164C  ILE*     1.3    78.6    -      -       -      +
    166C  TYR*     1.3    60.5    +      -       -      +
    168C  GLU*     3.5    11.4    -      -       -      +
    169C  THR*     3.4    18.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 166 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  VAL*     3.6    29.6    -      -       +      -
    105C  GLY      5.1     0.4    -      -       -      -
    106C  GLU*     3.6    45.0    -      -       +      +
    162C  PRO      3.1    19.2    +      -       -      +
    163C  VAL*     3.6     3.1    -      -       -      +
    164C  ILE      3.2     0.2    -      -       -      -
    165C  ALA*     1.3    76.6    -      -       -      +
    167C  TYR*     1.3   102.3    +      +       -      +
    169C  THR*     2.7    36.6    +      -       +      -
    170C  LYS*     3.5    26.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 167 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  PHE*     3.4    21.1    -      +       -      -
     99C  PRO*     3.7    25.5    -      -       +      +
    102C  VAL*     6.3     0.4    -      -       -      -
    105C  GLY*     3.2    32.1    +      -       -      -
    108C  PHE*     5.5     0.2    -      -       -      -
    115C  PRO*     4.1    18.5    -      -       +      +
    118C  VAL*     3.8    22.9    -      -       +      -
    163C  VAL*     3.0    33.5    +      -       +      +
    166C  TYR*     1.3   101.5    -      +       -      +
    168C  GLU*     1.3    67.1    +      -       -      +
    170C  LYS*     3.6     7.6    -      -       +      +
    171C  THR*     2.9    45.5    +      -       +      +
    173C  LEU*     3.9    15.9    -      -       +      +
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Residues in contact with GLU 168 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    164C  ILE*     3.0    13.8    +      -       -      +
    165C  ALA*     3.5    17.0    -      -       -      +
    167C  TYR*     1.3    78.1    -      -       -      +
    169C  THR*     1.3    60.8    +      -       +      +
    170C  LYS      3.3     0.3    +      -       -      -
    171C  THR      3.9     8.7    +      -       -      +
    173C  LEU*     3.6    35.2    -      -       -      +
    175C  LYS*     4.7    10.6    -      -       -      +
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Residues in contact with THR 169 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    165C  ALA      3.4    19.1    -      -       -      +
    166C  TYR*     2.7    23.9    +      -       -      +
    168C  GLU*     1.3    77.1    -      -       +      +
    170C  LYS*     1.3    63.6    +      -       -      +
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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