Contacts of the helix formed by residues 114 - 143 (chain B) 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 B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ASN*     4.8    11.2    +      -       -      +
      8A  ARG*     3.8    26.1    -      -       +      +
    113B  TYR*     1.3    75.3    -      -       -      +
    115B  ILE*     1.3    65.9    +      -       +      +
    116B  ARG*     3.1    22.2    +      -       -      +
    117B  THR*     3.1    23.0    +      -       -      -
    118B  SER*     2.8    23.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 115 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  ARG*     5.1     1.0    -      -       -      +
     51B  HIS*     5.0     3.4    -      -       +      +
     55B  VAL*     3.1    41.7    -      -       +      -
     56B  GLU      4.8    11.4    -      -       -      +
     59B  GLU*     5.2     8.5    -      -       -      +
     63B  LEU*     3.9    17.0    -      -       +      -
     67B  LEU*     4.5     7.0    -      -       +      -
    114B  ASP*     1.3    75.6    -      -       +      +
    116B  ARG*     1.3    68.3    +      -       +      +
    118B  SER*     3.3     9.4    +      -       -      -
    119B  LEU*     2.9    54.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 116 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  ASP*     3.1     9.9    +      -       -      +
    115B  ILE*     1.3    85.1    -      -       +      +
    117B  THR*     1.3    56.9    +      -       -      +
    119B  LEU*     3.6     1.3    +      -       +      -
    120B  ALA*     3.0    29.5    +      -       -      +
    169B  TYR      4.2     5.9    +      -       -      -
    170B  LEU*     3.1    62.4    +      -       +      +
    171B  GLU      4.8     4.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 117 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113B  TYR*     3.6    28.5    -      -       +      -
    114B  ASP*     3.1    27.9    +      -       -      -
    116B  ARG*     1.3    73.9    -      -       -      +
    118B  SER*     1.3    68.5    +      -       -      +
    120B  ALA*     3.3     5.5    +      -       -      +
    121B  ASN*     2.8    40.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 118 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  HIS*     3.2    42.2    +      -       -      -
    108B  GLU*     3.6    11.4    -      -       -      -
    112B  VAL*     5.7     0.2    -      -       -      +
    113B  TYR*     3.0    22.9    +      -       -      +
    114B  ASP      2.8    22.0    +      -       -      -
    115B  ILE*     3.5    13.6    -      -       -      +
    117B  THR*     1.3    77.9    -      -       -      +
    119B  LEU*     1.3    61.2    +      -       -      +
    121B  ASN*     3.4     1.4    +      -       -      +
    122B  ASP*     3.1    17.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 119 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  HIS*     5.2     0.2    -      -       -      +
     63B  LEU*     3.9    17.9    -      -       +      -
     66B  PHE*     6.2     0.2    -      -       +      -
     67B  LEU*     4.4    19.5    -      -       +      -
    115B  ILE*     2.9    46.2    +      -       +      +
    116B  ARG*     3.8     4.9    -      -       +      +
    118B  SER*     1.3    74.9    -      -       -      +
    120B  ALA*     1.4    53.1    +      -       -      +
    122B  ASP*     3.2    15.5    +      -       -      +
    123B  MET*     2.8    34.1    +      -       -      +
    166B  ILE*     3.6    17.8    -      -       +      +
    169B  TYR*     3.8    29.6    -      -       +      -
    170B  LEU*     4.1    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 120 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116B  ARG      3.0    19.0    +      -       -      +
    117B  THR*     3.8     5.2    -      -       -      +
    119B  LEU*     1.4    71.6    -      -       -      +
    121B  ASN*     1.3    68.3    +      -       -      +
    123B  MET*     3.2    11.9    +      -       +      +
    124B  ALA*     3.0    22.5    +      -       -      +
    170B  LEU*     3.7    17.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 121 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  GLN*     3.8    10.3    -      -       -      +
    108B  GLU*     2.6    43.4    +      -       +      +
    113B  TYR*     5.1     2.0    -      -       -      -
    117B  THR*     2.8    33.7    +      -       -      +
    118B  SER      3.5     2.7    -      -       -      +
    120B  ALA*     1.3    74.2    -      -       -      +
    122B  ASP*     1.3    61.3    +      -       -      +
    124B  ALA*     3.3     8.1    +      -       -      +
    125B  ILE*     3.2    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 122 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44B  LEU*     4.3     2.0    -      -       +      +
     47B  GLN*     2.8    32.2    +      -       -      +
     48B  LEU*     3.9    23.7    -      -       +      +
     51B  HIS*     2.4    33.8    +      -       -      +
     67B  LEU*     4.2     5.4    -      -       -      +
    118B  SER      3.1     9.1    +      -       -      +
    119B  LEU*     3.2    11.3    +      -       -      +
    121B  ASN*     1.3    71.1    -      -       -      +
    123B  MET*     1.3    66.2    +      -       -      +
    125B  ILE*     3.3     9.8    -      -       -      +
    126B  TYR*     2.9    28.7    +      -       +      -
    166B  ILE*     3.7    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 123 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119B  LEU      2.8    15.1    +      -       -      +
    120B  ALA*     3.2    12.8    +      -       +      +
    122B  ASP*     1.3    76.3    -      -       -      +
    124B  ALA*     1.3    63.3    +      -       -      +
    126B  TYR*     3.2     9.6    +      -       -      +
    127B  GLY*     3.0    20.4    +      -       -      -
    163B  ALA*     4.3    15.0    -      -       +      +
    166B  ILE*     3.9    10.5    -      -       +      -
    167B  GLU*     4.1    39.0    -      -       +      +
    170B  LEU*     3.8    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 124 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106B  ASP*     6.2     0.2    -      -       -      +
    120B  ALA      3.0    11.9    +      -       -      +
    121B  ASN*     3.4    11.9    -      -       -      +
    123B  MET*     1.3    76.2    -      -       -      +
    125B  ILE*     1.3    62.7    +      -       +      +
    127B  GLY*     3.1    11.1    +      -       -      -
    128B  ASP*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 125 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  VAL*     4.9     2.9    -      -       +      -
     44B  LEU*     3.6    35.4    -      -       +      -
     47B  GLN*     3.4    39.9    -      -       +      +
    105B  VAL*     4.0    32.5    -      -       +      -
    106B  ASP*     3.5    25.4    -      -       +      +
    107B  VAL*     5.1     0.4    -      -       -      -
    121B  ASN      3.2    10.0    +      -       -      +
    122B  ASP*     3.3    10.1    -      -       -      +
    124B  ALA*     1.3    72.3    -      -       +      +
    126B  TYR*     1.3    67.7    +      -       -      +
    127B  GLY      3.1     0.3    +      -       -      -
    128B  ASP*     3.1     4.2    +      -       -      +
    129B  ILE*     2.9    27.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 126 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44B  LEU*     3.7    33.0    -      -       +      -
     48B  LEU*     3.3    25.1    -      -       +      +
     70B  ALA*     3.6     8.7    +      -       -      +
     74B  ALA*     5.7     0.2    -      -       -      +
    122B  ASP      2.9    31.5    +      -       -      -
    123B  MET*     3.2     8.7    +      -       -      +
    125B  ILE*     1.3    75.2    -      -       -      +
    127B  GLY*     1.3    58.5    +      -       -      +
    129B  ILE*     3.2     6.0    +      -       -      +
    130B  ILE*     2.7    36.0    +      -       +      +
    159B  LEU*     3.5    43.7    -      -       +      -
    162B  ASP*     3.3    24.3    +      -       +      +
    163B  ALA*     3.7    20.4    -      -       +      -
    166B  ILE*     3.6    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 127 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123B  MET      3.0    13.6    +      -       -      -
    124B  ALA*     3.1     4.2    +      -       -      -
    125B  ILE      3.1     0.4    -      -       -      -
    126B  TYR*     1.3    76.5    -      -       -      +
    128B  ASP*     1.3    63.9    +      -       -      +
    130B  ILE*     3.1    10.8    +      -       -      +
    131B  GLU*     3.1    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 128 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40B  ASN*     5.5     1.6    -      -       -      +
    104B  SER*     5.1     6.0    +      -       -      +
    105B  VAL*     3.9    26.4    -      -       +      +
    106B  ASP*     5.3     2.6    +      -       -      +
    124B  ALA*     3.5    16.9    -      -       -      +
    125B  ILE      3.1     5.8    +      -       -      +
    127B  GLY*     1.3    76.1    -      -       -      +
    129B  ILE*     1.4    64.7    +      -       -      +
    131B  GLU*     3.5    11.0    +      -       -      +
    132B  ALA*     3.1    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 129 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  ASP*     5.7     3.8    -      -       -      +
     40B  ASN*     3.8    39.5    -      -       +      +
     41B  VAL*     3.8    26.9    -      -       +      -
     44B  LEU*     4.1    10.8    -      -       +      -
    105B  VAL*     4.1     5.4    -      -       +      -
    125B  ILE*     2.9    29.0    +      -       +      +
    126B  TYR*     3.6     4.0    -      -       -      +
    128B  ASP*     1.4    75.8    -      -       -      +
    130B  ILE*     1.3    63.0    +      -       -      +
    132B  ALA*     3.8     5.1    -      -       -      +
    133B  THR*     2.7    36.0    +      -       -      +
    159B  LEU*     3.7    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 130 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126B  TYR*     2.7    31.6    +      -       +      +
    127B  GLY*     3.1     8.5    +      -       -      +
    129B  ILE*     1.3    75.8    -      -       -      +
    131B  GLU*     1.3    59.2    +      -       +      +
    133B  THR*     3.2     2.6    +      -       -      -
    134B  ARG*     3.0    61.5    +      -       -      +
    156B  LEU*     3.7    17.5    -      -       +      +
    159B  LEU*     4.4     9.0    -      -       +      +
    160B  GLU*     3.6    28.3    -      -       +      +
    163B  ALA*     3.6    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 131 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127B  GLY      3.1    21.3    +      -       -      +
    128B  ASP*     4.1     9.8    -      -       -      +
    129B  ILE      3.3     0.2    -      -       -      -
    130B  ILE*     1.3    73.2    -      -       +      +
    132B  ALA*     1.3    66.9    +      -       -      +
    133B  THR      3.1     1.5    +      -       -      -
    134B  ARG*     3.3    26.7    +      -       -      +
    135B  GLU*     3.0    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 132 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  ASP*     4.1    14.8    -      -       -      +
     40B  ASN*     5.3     7.0    -      -       -      +
    128B  ASP      3.1    16.3    +      -       -      +
    129B  ILE*     3.8     7.4    -      -       -      +
    131B  GLU*     1.3    77.4    -      -       -      +
    133B  THR*     1.3    58.5    +      -       -      +
    135B  GLU*     2.9    19.1    +      -       -      +
    136B  HIS*     2.9    40.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with THR 133 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  ASP*     4.0     9.9    +      -       -      -
    129B  ILE*     2.7    34.9    +      -       -      +
    130B  ILE      3.5     4.7    -      -       -      -
    131B  GLU      3.1     0.6    -      -       -      -
    132B  ALA*     1.3    73.4    -      -       -      +
    134B  ARG*     1.3    58.8    +      -       -      +
    136B  HIS*     3.3     8.2    +      -       -      +
    137B  THR*     2.3    41.2    +      -       +      +
    152B  LEU*     3.8    35.9    -      -       +      +
    156B  LEU*     3.8    21.7    -      -       +      +
    159B  LEU*     4.7     5.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 134 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130B  ILE*     3.0    33.8    +      -       -      +
    131B  GLU*     3.4    24.4    +      -       -      +
    133B  THR*     1.3    74.7    -      -       -      +
    135B  GLU*     1.3    64.1    +      -       +      +
    137B  THR*     3.3    14.0    +      -       -      +
    138B  GLU*     3.2    28.2    +      -       -      +
    156B  LEU*     4.0    14.0    -      -       +      +
    160B  GLU*     3.0    32.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 135 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131B  GLU*     3.0    21.5    +      -       +      +
    132B  ALA*     2.9    22.6    +      -       -      +
    134B  ARG*     1.3    75.5    -      -       +      +
    136B  HIS*     1.3    66.8    +      -       +      +
    138B  GLU*     3.0    16.0    +      -       -      +
    139B  LEU*     2.9    25.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 136 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  ALA*     3.3    42.4    +      -       +      +
     34B  LEU*     5.7     0.2    -      -       +      -
     36B  ALA*     4.9     5.6    -      -       +      -
     37B  ASP*     3.0    37.8    +      -       -      +
    132B  ALA*     2.9    24.7    +      -       +      +
    133B  THR      3.3     3.8    +      -       -      +
    135B  GLU*     1.3    81.4    +      -       +      +
    137B  THR*     1.3    67.3    +      -       -      +
    139B  LEU*     3.4    10.4    -      -       +      +
    140B  ALA*     2.9    25.3    +      -       -      +
    152B  LEU*     3.6    19.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 137 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  THR*     2.3    40.6    -      -       +      +
    134B  ARG*     3.5    11.1    +      -       -      +
    135B  GLU      3.1     0.2    -      -       -      -
    136B  HIS*     1.3    78.7    -      -       -      +
    138B  GLU*     1.3    62.5    +      -       -      +
    140B  ALA*     3.9     2.5    -      -       -      +
    141B  GLU*     2.9    27.5    +      -       -      +
    149B  ALA*     4.0     9.4    -      -       -      +
    152B  LEU*     3.9    27.6    -      -       +      -
    153B  ARG*     3.8    22.6    +      -       +      +
    156B  LEU*     4.8     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 138 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134B  ARG*     3.2    24.3    -      -       -      +
    135B  GLU*     3.0    11.7    +      -       -      +
    137B  THR*     1.3    80.9    -      -       -      +
    139B  LEU*     1.3    57.9    +      -       -      +
    141B  GLU*     3.3     4.6    +      -       -      -
    142B  ASN*     2.9    43.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 139 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  GLN*     3.5    48.7    -      -       +      +
     30B  CYS*     4.7     2.2    -      -       -      +
     33B  ALA*     4.3    13.9    -      -       +      -
    135B  GLU      2.9    12.5    +      -       -      +
    136B  HIS*     3.4    14.8    -      -       +      +
    138B  GLU*     1.3    75.3    -      -       -      +
    140B  ALA*     1.3    64.3    +      -       -      +
    142B  ASN*     3.0    12.1    +      -       +      +
    143B  LEU*     2.9    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 140 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30B  CYS*     4.4     9.6    -      -       +      -
    136B  HIS      2.9    18.9    +      -       -      +
    137B  THR      3.9     0.2    -      -       -      +
    139B  LEU*     1.3    72.9    -      -       -      +
    141B  GLU*     1.3    63.6    +      -       -      +
    143B  LEU      3.2     2.1    +      -       -      +
    144B  GLY      3.2     2.6    +      -       -      -
    145B  ASP*     2.9    45.5    +      -       +      +
    148B  THR*     3.9    17.3    -      -       +      -
    149B  ALA*     3.7    21.8    -      -       +      +
    152B  LEU*     4.4     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 141 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137B  THR      2.9    18.0    +      -       -      +
    138B  GLU*     4.1     4.7    -      -       -      +
    140B  ALA*     1.3    72.8    -      -       -      +
    142B  ASN*     1.3    62.8    +      -       -      +
    144B  GLY*     2.7    20.5    +      -       -      +
    145B  ASP      4.6     1.1    -      -       -      -
    146B  HIS*     3.2    40.3    +      -       +      +
    149B  ALA*     3.3    12.5    -      -       +      +
    153B  ARG*     2.7    45.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 142 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138B  GLU*     2.9    30.0    +      -       -      +
    139B  LEU*     3.0    11.6    +      -       +      +
    141B  GLU*     1.3    81.0    -      -       -      +
    143B  LEU*     1.3    65.9    +      -       +      +
    144B  GLY      3.2     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22B  MET*     6.0     0.2    -      -       -      -
     25B  ASP*     6.1     0.2    -      -       -      +
     26B  ARG*     2.9    54.7    +      -       +      +
     29B  GLN*     3.3    46.0    -      -       +      +
     30B  CYS*     3.5    31.2    -      -       -      -
    139B  LEU*     2.9    29.8    +      -       +      +
    140B  ALA      3.2     2.7    +      -       -      +
    142B  ASN*     1.3    79.5    -      -       +      +
    144B  GLY*     1.3    58.1    +      -       -      +
    145B  ASP*     3.1     4.1    +      -       +      +
----------------------------------------------------------
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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