Contacts of the helix formed by residues 114 - 143 (chain C) in PDB entry 1TKP


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 ASP 114 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113C  TYR*     1.3    79.5    -      -       -      +
    115C  ILE*     1.3    65.6    +      -       +      +
    116C  ARG*     3.2    25.1    +      -       -      +
    117C  THR*     2.9    26.3    +      -       -      -
    118C  SER*     3.0    17.3    +      -       -      -
      7D  ALA*     5.6     0.4    -      -       -      +
      8D  ARG*     3.8    27.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 115 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  HIS*     5.1     2.2    -      -       +      -
     55C  VAL*     3.6    33.7    -      -       +      -
     56C  GLU      4.9    10.8    -      -       -      +
     59C  GLU*     5.2     8.5    -      -       -      +
     63C  LEU*     3.7    24.7    -      -       +      -
     67C  LEU*     4.4     5.6    -      -       +      -
    113C  TYR      4.5     0.4    -      -       -      -
    114C  ASP*     1.3    76.0    -      -       +      +
    116C  ARG*     1.3    67.1    +      -       +      +
    118C  SER*     4.4     9.2    -      -       -      -
    119C  LEU*     2.9    56.6    +      -       +      +
      8D  ARG*     5.1     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 116 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  ASP*     3.2    10.7    +      -       -      +
    115C  ILE*     1.3    86.2    -      -       +      +
    117C  THR*     1.3    58.8    +      -       -      +
    119C  LEU*     5.4     0.2    -      -       -      -
    120C  ALA*     2.9    29.1    +      -       -      +
    169C  TYR      4.3     4.8    +      -       -      -
    170C  LEU*     2.8    69.9    +      -       +      +
    171C  GLU      4.8     3.0    +      -       -      -
    172C  ASP*     6.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 117 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113C  TYR*     3.7    22.8    -      -       +      -
    114C  ASP*     2.9    27.4    +      -       -      -
    115C  ILE      3.3     0.2    -      -       -      -
    116C  ARG*     1.3    77.4    -      -       -      +
    118C  SER*     1.3    68.9    +      -       -      +
    120C  ALA*     3.2     7.0    +      -       -      +
    121C  ASN*     3.0    40.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 118 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  HIS*     3.3    47.4    +      -       -      -
    108C  GLU*     3.4    11.6    +      -       -      -
    112C  VAL*     5.7     0.2    -      -       -      +
    113C  TYR*     3.1    23.4    +      -       -      +
    114C  ASP      3.0    15.9    +      -       -      -
    115C  ILE*     3.8    10.5    -      -       -      -
    117C  THR*     1.3    80.4    -      -       -      +
    119C  LEU*     1.3    62.5    +      -       -      +
    121C  ASN*     3.2     1.2    +      -       -      +
    122C  ASP*     3.0    17.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  HIS*     5.0     0.9    -      -       -      +
     63C  LEU*     4.0    17.5    -      -       +      -
     66C  PHE*     5.7     0.2    -      -       +      -
     67C  LEU*     3.8    30.5    -      -       +      -
    115C  ILE*     2.9    44.9    +      -       +      +
    116C  ARG      4.0     2.7    -      -       -      +
    118C  SER*     1.3    73.5    -      -       -      +
    120C  ALA*     1.3    58.3    +      -       -      +
    122C  ASP*     3.3    11.4    +      -       -      +
    123C  MET*     2.8    29.5    +      -       -      +
    166C  ILE*     3.5    22.4    -      -       +      +
    169C  TYR*     3.7    31.4    -      -       +      -
    170C  LEU*     4.1    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 120 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116C  ARG      2.9    20.5    +      -       -      +
    117C  THR*     3.2     7.2    +      -       +      +
    119C  LEU*     1.3    77.4    -      -       -      +
    121C  ASN*     1.3    57.6    -      -       -      +
    123C  MET*     3.1    12.4    +      -       +      +
    124C  ALA*     3.0    26.2    +      -       -      +
    170C  LEU*     3.9    14.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 121 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  GLN*     3.8    17.0    -      -       -      +
    106C  ASP      6.1     0.2    -      -       -      +
    108C  GLU*     2.8    34.2    +      -       +      +
    113C  TYR*     4.9     1.8    -      -       -      -
    117C  THR*     3.0    33.3    +      -       -      +
    118C  SER      3.4     6.3    -      -       -      +
    120C  ALA*     1.3    73.7    -      -       -      +
    122C  ASP*     1.3    65.8    +      -       -      +
    124C  ALA*     3.1    10.6    +      -       -      +
    125C  ILE*     3.0    24.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 122 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  LEU*     4.9     2.0    -      -       +      +
     47C  GLN*     3.2    18.1    +      -       -      +
     48C  LEU*     3.9    22.2    -      -       +      +
     51C  HIS*     2.5    39.1    +      -       -      +
    118C  SER      3.0     7.8    +      -       -      +
    119C  LEU*     3.6    18.0    -      -       -      +
    121C  ASN*     1.3    72.9    -      -       -      +
    123C  MET*     1.3    64.6    +      -       -      +
    125C  ILE*     3.1     9.3    +      -       -      +
    126C  TYR*     2.9    28.9    +      -       +      -
    166C  ILE*     3.8    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 123 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119C  LEU      2.8    14.9    +      -       -      +
    120C  ALA*     3.2    17.0    -      -       +      +
    121C  ASN      3.1     0.2    -      -       -      -
    122C  ASP*     1.3    78.9    -      -       -      +
    124C  ALA*     1.3    61.0    +      -       -      +
    126C  TYR*     3.2     9.5    +      -       -      +
    127C  GLY*     3.0    21.3    +      -       -      -
    163C  ALA*     4.7    11.7    -      -       +      +
    166C  ILE*     3.9    11.0    -      -       +      +
    167C  GLU*     3.9    40.4    -      -       -      +
    170C  LEU*     4.0    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 124 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106C  ASP*     5.9     5.4    -      -       +      +
    120C  ALA      3.0    10.9    +      -       -      +
    121C  ASN*     3.1    12.1    +      -       -      +
    123C  MET*     1.3    73.3    -      -       -      +
    125C  ILE*     1.3    68.6    +      -       +      +
    127C  GLY*     3.3     1.7    +      -       -      -
    128C  ASP*     3.2    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 125 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  VAL*     4.9     3.4    -      -       +      -
     44C  LEU*     3.6    35.2    -      -       +      -
     47C  GLN*     3.2    41.7    -      -       +      +
    105C  VAL*     4.0    28.7    -      -       +      -
    106C  ASP*     3.5    25.4    -      -       +      +
    107C  VAL*     5.1     0.9    -      -       +      -
    121C  ASN*     3.0    10.3    +      -       +      +
    122C  ASP*     3.5     9.6    -      -       -      +
    124C  ALA*     1.3    77.5    -      -       +      +
    126C  TYR*     1.4    63.8    +      -       -      +
    128C  ASP*     3.3     3.0    +      -       -      +
    129C  ILE*     3.1    29.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  LEU*     3.7    32.8    -      -       +      -
     48C  LEU*     3.2    26.3    -      -       +      +
     70C  ALA*     3.5    11.1    +      -       -      +
     74C  ALA*     5.4     0.6    -      -       +      +
    122C  ASP*     2.9    29.3    +      -       +      -
    123C  MET*     3.2     6.7    +      -       -      +
    125C  ILE*     1.4    71.8    -      -       -      +
    127C  GLY*     1.3    52.5    +      -       -      +
    129C  ILE*     3.1     8.3    +      -       +      +
    130C  ILE*     2.7    40.4    +      -       +      +
    159C  LEU*     3.6    36.1    -      -       +      -
    162C  ASP*     3.5    31.3    +      -       +      +
    163C  ALA*     3.7    19.5    -      -       +      -
    166C  ILE*     3.6    28.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  MET      3.0    14.5    +      -       -      -
    124C  ALA*     3.9     3.1    -      -       -      -
    125C  ILE      3.3     0.2    -      -       -      -
    126C  TYR*     1.3    74.8    -      -       -      +
    128C  ASP*     1.3    66.5    +      -       -      +
    130C  ILE*     3.1    10.9    +      -       -      +
    131C  GLU*     2.9    32.7    +      -       -      +
    163C  ALA*     6.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  ASN*     5.6     2.7    -      -       -      +
    104C  SER*     4.9     5.1    +      -       -      +
    105C  VAL*     3.9    26.4    -      -       +      +
    106C  ASP*     5.3     3.8    +      -       -      +
    124C  ALA*     3.2    15.4    +      -       -      +
    125C  ILE      3.6     7.2    -      -       -      +
    127C  GLY*     1.3    81.0    -      -       -      +
    129C  ILE*     1.4    60.2    +      -       -      +
    131C  GLU*     3.4    10.7    +      -       -      +
    132C  ALA*     3.1    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ASP*     5.3     4.7    -      -       -      +
     40C  ASN*     3.8    37.2    -      -       +      +
     41C  VAL*     4.0    19.3    -      -       +      -
     44C  LEU*     3.4    32.3    -      -       +      -
    105C  VAL*     4.6     2.0    -      -       +      -
    125C  ILE*     3.1    24.4    +      -       +      +
    126C  TYR*     3.1     8.2    +      -       -      +
    128C  ASP*     1.4    73.2    -      -       -      +
    130C  ILE*     1.3    59.6    +      -       -      +
    132C  ALA*     3.4     6.1    +      -       -      +
    133C  THR*     2.8    44.0    +      -       -      +
    159C  LEU*     4.1    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126C  TYR*     2.7    28.9    +      -       +      +
    127C  GLY*     3.5     7.9    -      -       -      +
    129C  ILE*     1.3    73.2    -      -       +      +
    131C  GLU*     1.3    60.2    +      -       +      +
    133C  THR*     3.1     2.4    +      -       -      -
    134C  ARG*     2.9    69.0    +      -       -      +
    156C  LEU*     3.9    11.5    -      -       +      +
    159C  LEU*     4.3    10.8    -      -       +      +
    160C  GLU*     3.9    30.3    -      -       +      +
    163C  ALA*     3.5    31.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 131 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127C  GLY      2.9    20.0    +      -       -      +
    128C  ASP*     3.9    11.3    -      -       -      +
    130C  ILE*     1.3    74.9    -      -       +      +
    132C  ALA*     1.3    65.8    +      -       -      +
    134C  ARG*     3.3    25.3    +      -       -      +
    135C  GLU*     3.1    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ASP*     4.0    14.8    -      -       -      +
     40C  ASN*     5.6     5.8    -      -       -      +
    128C  ASP      3.1    14.9    +      -       -      +
    129C  ILE*     3.6     7.4    -      -       -      +
    131C  GLU*     1.3    78.0    -      -       -      +
    133C  THR*     1.3    65.2    +      -       -      +
    135C  GLU*     3.0    11.4    +      -       -      -
    136C  HIS*     2.9    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 133 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ASP*     3.9    14.0    +      -       -      -
    129C  ILE*     2.8    34.7    +      -       -      +
    130C  ILE      3.1     4.2    +      -       -      -
    132C  ALA*     1.3    75.5    -      -       -      +
    134C  ARG*     1.3    65.1    +      -       -      +
    136C  HIS*     3.1     7.1    +      -       -      +
    137C  THR*     2.8    35.2    +      -       +      +
    152C  LEU*     3.7    35.0    -      -       +      +
    156C  LEU*     3.8    24.0    -      -       +      +
    159C  LEU*     4.7     5.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  ILE*     2.9    37.5    +      -       -      +
    131C  GLU*     3.5    22.5    +      -       -      +
    132C  ALA      3.2     0.2    -      -       -      -
    133C  THR*     1.3    80.1    -      -       -      +
    135C  GLU*     1.4    62.9    +      -       +      +
    137C  THR*     3.2    10.8    +      -       -      -
    138C  GLU*     3.2    28.2    +      -       -      +
    156C  LEU*     4.3    15.0    -      -       +      +
    160C  GLU*     3.1    31.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 135 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  GLU*     3.1    19.9    +      -       -      +
    132C  ALA*     3.0    11.1    +      -       -      +
    134C  ARG*     1.4    75.2    -      -       -      +
    136C  HIS*     1.3    62.5    +      -       +      +
    138C  GLU*     2.9    17.4    +      -       -      +
    139C  LEU*     2.8    33.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 136 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  ALA*     3.3    46.0    +      -       +      +
     34C  LEU*     5.6     0.2    -      -       +      -
     36C  ALA*     5.1     5.2    -      -       +      -
     37C  ASP*     2.9    35.1    +      -       -      +
    132C  ALA*     2.9    23.3    +      -       +      +
    133C  THR*     3.6     4.0    -      -       -      +
    135C  GLU*     1.3    83.8    +      -       +      +
    137C  THR*     1.3    60.8    +      -       -      +
    139C  LEU*     3.1    10.6    +      -       +      +
    140C  ALA*     2.8    34.1    +      -       -      +
    152C  LEU*     3.5    17.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 137 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  THR*     2.8    38.3    +      -       +      +
    134C  ARG*     3.3     9.0    +      -       -      +
    135C  GLU      3.1     0.2    -      -       -      -
    136C  HIS*     1.3    76.9    -      -       -      +
    138C  GLU*     1.3    63.8    +      -       -      +
    141C  GLU*     3.0    29.7    +      -       -      +
    149C  ALA*     3.8    14.9    -      -       -      +
    152C  LEU*     3.5    30.5    -      -       +      -
    153C  ARG*     4.3    23.1    +      -       +      +
    156C  LEU*     5.0     5.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 138 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134C  ARG*     3.2    20.7    +      -       -      +
    135C  GLU*     2.9    16.2    +      -       -      +
    137C  THR*     1.3    82.7    +      -       -      +
    139C  LEU*     1.3    58.0    +      -       -      +
    141C  GLU*     3.8     3.4    -      -       -      +
    142C  ASN*     2.9    43.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 139 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  GLN*     3.7    37.2    -      -       +      +
     30C  CYS*     4.6     3.1    -      -       -      -
     33C  ALA*     4.1    18.4    -      -       +      -
    135C  GLU      2.8    12.0    +      -       -      +
    136C  HIS*     3.3    13.7    -      -       +      +
    138C  GLU*     1.3    79.1    -      -       -      +
    140C  ALA*     1.3    57.3    +      -       +      +
    142C  ASN*     3.3     8.1    +      -       +      +
    143C  LEU*     2.9    50.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 140 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30C  CYS*     4.5     8.5    -      -       -      -
    136C  HIS      2.8    19.9    +      -       -      +
    139C  LEU*     1.3    69.1    -      -       +      +
    141C  GLU*     1.3    61.7    +      -       -      +
    143C  LEU*     3.1    11.3    +      -       -      +
    144C  GLY      3.0     3.8    +      -       -      -
    145C  ASP      2.8    45.2    +      -       -      +
    148C  THR*     3.9    17.3    -      -       +      -
    149C  ALA*     3.6    18.8    -      -       +      +
    152C  LEU*     4.5     1.8    -      -       +      -
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Residues in contact with GLU 141 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  GLU*     4.9     4.9    -      -       -      +
    153A  ARG*     3.2    36.8    +      -       -      -
    137C  THR      3.0    14.9    +      -       -      +
    138C  GLU*     4.0     4.5    -      -       -      +
    140C  ALA*     1.3    73.8    -      -       -      +
    142C  ASN*     1.3    59.2    +      -       -      +
    144C  GLY*     2.6    26.0    +      -       -      +
    145C  ASP      4.6     0.4    -      -       -      +
    146C  HIS*     3.2    38.0    +      -       -      +
    149C  ALA*     3.3    17.0    -      -       +      +
    153C  ARG*     2.9    33.1    +      -       -      +
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Residues in contact with ASN 142 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138C  GLU*     2.9    33.0    +      -       -      +
    139C  LEU*     3.5     8.6    -      -       +      +
    141C  GLU*     1.3    76.9    -      -       -      +
    143C  LEU*     1.3    66.4    +      -       +      +
    144C  GLY*     3.3     1.2    +      -       -      -
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Residues in contact with LEU 143 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26C  ARG*     3.2    46.4    +      -       +      +
     29C  GLN*     3.5    52.3    -      -       +      +
     30C  CYS*     4.0    18.8    -      -       -      -
    139C  LEU*     2.9    33.6    +      -       +      +
    140C  ALA*     3.1     5.6    +      -       -      +
    142C  ASN*     1.3    79.2    -      -       +      +
    144C  GLY*     1.3    61.3    +      -       -      +
    145C  ASP*     3.2     6.6    +      -       +      +
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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
------------------------------------------------------------
  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