Contacts of the helix formed by residues 129 - 156 (chain A) in PDB entry 4NFT


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with THR 129 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  SER*     4.3    13.5    +      -       -      -
     87A  VAL*     3.9    30.8    -      -       +      +
     90A  TYR*     4.2    17.7    -      -       +      -
     91A  THR*     5.0     5.2    -      -       -      +
    127A  GLY      3.1     0.4    -      -       -      -
    128A  ALA*     1.3    84.8    -      -       +      +
    130A  ALA*     1.3    66.4    +      -       -      +
    131A  ALA      3.1     3.8    -      -       -      +
    132A  VAL*     3.3    11.1    +      -       -      +
    133A  TYR*     3.1    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  ILE*     3.6    31.9    -      -       +      +
     59A  THR*     3.8    17.2    -      -       -      +
     60A  SER*     4.1     8.7    -      -       -      +
     63A  ILE*     4.2     4.2    -      -       +      +
    116A  LEU*     4.2     2.9    -      -       +      -
    126A  VAL*     4.1     9.4    -      -       +      -
    127A  GLY      3.4     9.3    +      -       -      +
    129A  THR*     1.3    80.5    +      -       -      +
    131A  ALA*     1.3    52.6    +      -       -      +
    133A  TYR*     3.5     5.4    +      -       -      +
    134A  SER*     2.7    36.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  ARG*     4.2     3.6    -      -       -      +
    109A  VAL*     3.9    14.3    -      -       +      +
    112A  ILE*     3.8     5.9    -      -       +      +
    113A  HIS*     3.7    49.1    -      -       +      +
    116A  LEU*     4.0    10.9    -      -       +      +
    126A  VAL*     4.9     0.2    -      -       -      +
    127A  GLY      4.5     1.8    +      -       -      -
    128A  ALA      5.8     0.2    -      -       -      +
    129A  THR*     3.1     1.2    -      -       -      +
    130A  ALA*     1.3    76.2    -      -       -      +
    132A  VAL*     1.3    60.1    +      -       -      +
    133A  TYR      3.2     1.1    -      -       -      -
    135A  ALA*     2.9    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  ALA*     3.8    21.3    -      -       +      +
     87A  VAL*     3.9     8.1    -      -       +      +
     90A  TYR*     3.8    41.1    -      -       +      -
     99A  ARG*     4.3     3.1    -      -       -      +
    103A  ALA*     3.7    25.6    -      -       +      -
    105A  LEU*     3.7     4.0    -      -       -      +
    109A  VAL*     3.9    24.0    -      -       +      -
    128A  ALA      4.9     0.2    -      -       -      +
    129A  THR*     3.3    13.8    +      -       -      +
    131A  ALA*     1.3    77.3    -      -       -      +
    133A  TYR*     1.3    62.1    +      -       -      +
    135A  ALA      3.5     0.2    +      -       -      -
    136A  ALA*     3.1    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  SER*     3.7    21.1    -      -       -      -
     63A  ILE*     3.6    23.3    -      -       +      -
     64A  GLN*     2.6    57.9    +      -       +      +
     67A  VAL*     5.2     0.9    -      -       +      -
     80A  VAL*     3.6    15.4    +      -       +      +
     83A  GLY*     3.4    40.8    -      -       -      -
     84A  THR*     3.5     7.2    -      -       +      -
     87A  VAL*     3.6    14.6    -      -       +      -
    129A  THR      3.1    15.8    +      -       -      +
    130A  ALA*     3.6     4.9    -      -       -      +
    132A  VAL*     1.3    78.0    -      -       -      +
    134A  SER*     1.3    62.2    +      -       -      +
    136A  ALA*     3.2     4.5    +      -       -      +
    137A  ILE*     3.1    38.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  PHE*     4.1    16.6    -      -       -      -
     42A  ILE*     6.0     0.9    -      -       -      -
     63A  ILE*     3.5    27.2    -      -       -      +
    112A  ILE*     4.0    15.7    -      -       -      -
    116A  LEU*     3.8     5.0    -      -       -      +
    130A  ALA      2.7    23.0    +      -       -      -
    131A  ALA*     3.3     4.0    +      -       -      -
    133A  TYR*     1.3    76.1    -      -       -      +
    135A  ALA*     1.3    58.5    +      -       -      +
    137A  ILE*     3.2    10.1    +      -       -      +
    138A  LEU*     2.9    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  LEU*     3.7    19.7    -      -       +      -
    107A  PHE*     3.9    10.9    -      -       +      +
    109A  VAL*     4.3    13.9    -      -       +      -
    112A  ILE*     3.6    28.8    -      -       +      +
    131A  ALA      2.9    18.1    +      -       -      +
    132A  VAL      3.8     0.2    -      -       -      +
    134A  SER*     1.3    76.4    -      -       -      +
    136A  ALA*     1.3    58.5    +      -       -      +
    138A  LEU*     3.4     2.3    +      -       -      +
    139A  GLU*     2.9    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  GLU*     3.5    30.8    -      -       +      +
     83A  GLY*     3.8     5.4    -      -       -      -
     86A  ALA*     3.6    14.1    -      -       +      -
    105A  LEU*     3.7    14.3    -      -       +      +
    132A  VAL      3.1    14.8    +      -       -      +
    133A  TYR      3.4     8.5    -      -       -      +
    134A  SER      3.1     0.2    -      -       -      -
    135A  ALA*     1.3    74.5    -      -       -      +
    137A  ILE*     1.3    60.3    +      -       -      +
    139A  GLU*     3.4     2.5    +      -       -      +
    140A  TYR*     2.9    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  ILE*     4.1    16.4    -      -       +      -
     63A  ILE*     4.6     2.0    -      -       +      -
     67A  VAL*     4.0    27.8    -      -       +      -
     71A  LEU*     4.9     0.4    -      -       +      -
     79A  ALA*     3.2    44.6    -      -       +      +
     80A  VAL*     4.2     1.8    -      -       -      +
     83A  GLY*     4.1     3.8    -      -       -      -
    133A  TYR*     3.1    38.7    +      -       +      +
    134A  SER*     3.5     8.5    -      -       -      +
    136A  ALA*     1.3    74.8    -      -       -      +
    138A  LEU*     1.3    64.7    +      -       +      +
    140A  TYR*     2.9    16.4    +      -       -      +
    141A  LEU*     3.0    25.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  TYR*     5.5     2.0    -      -       +      -
     35A  VAL*     4.0    15.3    -      -       +      +
     38A  ILE*     3.8    28.5    -      -       +      -
     39A  PHE*     3.6    45.1    -      -       +      -
     42A  ILE*     5.2     5.8    -      -       +      -
    107A  PHE*     3.8    21.5    -      -       +      -
    112A  ILE*     3.9    24.5    -      -       +      -
    134A  SER*     2.9    23.3    +      -       -      +
    135A  ALA      3.9     0.9    -      -       -      +
    137A  ILE*     1.3    73.6    -      -       +      +
    139A  GLU*     1.3    61.8    +      -       -      +
    141A  LEU*     3.5     6.3    +      -       +      +
    142A  THR*     2.8    30.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  VAL*     3.8    19.7    -      -       +      +
     16A  GLN*     5.1     2.1    -      -       -      +
    104A  GLY      4.5     2.3    -      -       -      +
    105A  LEU*     3.2    21.5    -      -       +      +
    106A  GLN*     2.4    49.2    +      -       -      +
    107A  PHE*     2.8    24.1    +      -       +      +
    135A  ALA      2.9    17.9    +      -       -      +
    136A  ALA*     3.8     4.9    -      -       -      +
    138A  LEU*     1.3    75.5    -      -       -      +
    140A  TYR*     1.3    58.5    +      -       -      +
    142A  THR*     3.4     1.9    +      -       -      -
    143A  ALA*     2.9    32.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  LEU*     3.6    41.0    -      -       +      +
     78A  HIS*     3.1    34.8    +      +       +      +
     79A  ALA*     3.7    20.9    -      -       +      -
     82A  GLU*     4.2    25.4    -      -       +      -
    136A  ALA      2.9    13.3    +      -       -      +
    137A  ILE*     2.9    11.3    +      -       -      +
    139A  GLU*     1.3    76.8    -      -       -      +
    141A  LEU*     1.3    69.7    +      -       +      +
    143A  ALA*     3.3     8.3    +      -       +      +
    144A  GLU*     3.0    52.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  PHE*     4.1    15.9    -      -       +      -
     38A  ILE*     3.9    34.8    -      -       +      -
     42A  ILE*     5.2     0.4    -      -       +      -
     71A  LEU*     4.0    29.8    -      -       +      -
     75A  LEU*     3.8    28.3    -      -       +      -
    137A  ILE*     3.0    27.0    +      -       +      +
    138A  LEU*     4.0     5.4    -      -       +      +
    140A  TYR*     1.3    84.4    -      -       +      +
    142A  THR*     1.3    63.2    +      -       -      +
    144A  GLU*     3.1    14.8    +      -       +      +
    145A  VAL*     3.1    18.5    +      -       -      +
    176A  LEU*     5.5     2.0    -      -       +      +
    179A  LEU*     4.3    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  VAL*     4.2    18.6    -      -       +      -
     13A  VAL*     4.4     5.4    -      -       +      -
     31A  MET*     3.8    23.7    -      -       +      +
     34A  PHE*     4.5     4.4    -      -       -      -
     35A  VAL*     3.6    13.7    -      -       +      +
    107A  PHE*     3.5    23.3    -      -       +      -
    138A  LEU      2.8    21.3    +      -       -      -
    139A  GLU      3.7     4.0    -      -       -      -
    140A  TYR      3.2     0.2    -      -       -      -
    141A  LEU*     1.3    78.2    -      -       -      +
    143A  ALA*     1.3    58.0    +      -       -      +
    145A  VAL*     3.5     2.3    +      -       -      +
    146A  LEU*     3.1    41.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  VAL*     3.7    21.2    -      -       +      +
     17A  VAL*     4.3    13.6    -      -       +      +
    139A  GLU*     2.9    19.1    +      -       +      +
    140A  TYR*     3.6     7.9    -      -       +      +
    142A  THR*     1.3    76.0    -      -       -      +
    144A  GLU*     1.3    60.9    +      -       -      +
    146A  LEU*     4.2     2.2    -      -       -      +
    147A  GLU*     2.9    34.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  LEU*     4.2    12.5    -      -       +      +
    140A  TYR*     3.0    56.4    +      -       +      +
    141A  LEU*     3.1    10.5    +      -       -      +
    143A  ALA*     1.3    77.4    -      -       -      +
    145A  VAL*     1.3    62.9    +      -       -      +
    147A  GLU*     3.6     8.2    +      -       -      +
    148A  LEU*     3.3    35.2    +      -       -      +
    175A  GLU*     5.4     3.3    -      -       -      +
    176A  LEU*     4.8    13.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  MET*     3.7    27.8    -      -       +      -
     34A  PHE*     4.1    24.9    -      -       +      -
    141A  LEU      3.1    12.7    +      -       -      +
    142A  THR      3.9     6.1    -      -       -      +
    144A  GLU*     1.3    79.1    -      -       -      +
    146A  LEU*     1.3    57.5    +      -       -      +
    148A  LEU*     3.5     2.4    +      -       -      +
    149A  ALA*     3.0    27.3    +      -       +      +
    166A  LEU*     4.1    13.5    -      -       +      -
    169A  ALA*     4.3     3.1    -      -       +      +
    170A  ILE*     4.6    23.1    -      -       +      -
    176A  LEU*     4.1    26.0    -      -       +      -
    180A  ILE*     5.7     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  VAL*     3.6    35.0    -      -       +      +
     13A  VAL*     4.1     4.5    -      -       +      -
     14A  LEU*     3.8    23.3    -      -       +      +
     17A  VAL*     4.2    12.3    -      -       +      -
     18A  HIS*     3.6     4.5    -      -       -      -
     23A  ILE*     4.2    24.2    -      -       +      -
     31A  MET*     4.0    20.6    -      -       +      -
    142A  THR*     3.1    29.3    +      -       +      +
    143A  ALA      4.2     2.7    -      -       -      +
    145A  VAL*     1.3    76.9    -      -       -      +
    147A  GLU*     1.3    54.5    +      -       -      +
    149A  ALA*     4.1     2.9    -      -       -      +
    150A  GLY*     2.8    31.5    +      -       -      -
    161A  ILE*     4.2    15.3    -      -       +      +
    166A  LEU*     5.2     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  VAL*     3.9    26.4    -      -       +      +
     18A  HIS*     3.1    26.1    +      -       -      -
    143A  ALA*     2.9    19.3    +      -       +      +
    144A  GLU*     3.8    11.0    -      -       -      +
    145A  VAL      3.2     0.2    -      -       -      -
    146A  LEU*     1.3    76.0    -      -       -      +
    148A  LEU*     1.3    68.1    +      -       +      +
    151A  ASN*     3.1    46.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  GLU*     3.3    19.5    +      -       -      +
    145A  VAL*     4.0     1.1    -      -       -      +
    147A  GLU*     1.3    84.4    -      -       +      +
    149A  ALA*     1.3    58.6    +      -       -      +
    151A  ASN*     3.3    15.0    +      -       +      +
    152A  ALA*     2.9    26.7    +      -       -      +
    169A  ALA*     3.6    21.3    -      -       +      +
    173A  ASP*     4.1    22.9    -      -       +      +
    176A  LEU*     3.7    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  VAL      3.0    19.5    +      -       -      +
    146A  LEU*     4.1     2.7    -      -       -      +
    148A  LEU*     1.3    72.7    -      -       -      +
    150A  GLY*     1.3    60.7    +      -       -      +
    152A  ALA*     3.3     4.5    +      -       -      +
    153A  SER*     3.0    29.6    +      -       -      -
    161A  ILE*     4.2    12.1    -      -       +      -
    165A  HIS*     3.7    22.1    -      -       -      +
    166A  LEU*     3.8    22.9    -      -       +      -
    169A  ALA*     3.6     9.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  HIS*     3.3    27.9    -      -       -      -
     21A  THR*     4.8     5.4    +      -       -      +
    146A  LEU      2.8    15.8    +      -       -      -
    149A  ALA*     1.3    74.0    -      -       -      +
    151A  ASN*     1.3    55.3    +      -       -      +
    153A  SER*     3.1     5.3    +      -       -      -
    154A  LYS*     2.8    28.6    +      -       -      +
    161A  ILE*     3.8    16.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  HIS*     3.3    20.3    +      -       -      -
    147A  GLU*     3.1    37.4    +      -       -      +
    148A  LEU*     3.4    16.9    -      -       +      +
    149A  ALA      3.3     0.2    -      -       -      -
    150A  GLY*     1.3    72.9    -      -       -      +
    152A  ALA*     1.3    64.2    +      -       -      +
    154A  LYS*     3.2    10.3    +      -       +      +
    155A  ASP*     2.9    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  LEU      2.9    13.7    +      -       -      +
    149A  ALA*     3.3    11.6    +      -       -      +
    151A  ASN*     1.3    75.0    -      -       -      +
    153A  SER*     1.3    62.5    +      -       -      +
    155A  ASP*     3.1    18.7    +      -       -      +
    156A  LEU*     3.2    17.7    +      -       -      +
    165A  HIS*     4.1    11.4    -      -       +      +
    168A  LEU*     4.3    27.8    -      -       +      -
    169A  ALA*     5.2     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  THR*     4.9     4.3    -      -       -      -
    149A  ALA      3.0    11.9    +      -       -      -
    150A  GLY*     3.1    11.9    +      -       -      -
    152A  ALA*     1.3    77.2    -      -       -      +
    154A  LYS*     1.3    61.7    +      -       -      +
    156A  LEU      3.1     9.4    +      -       -      -
    157A  LYS      3.2     4.9    +      -       -      -
    158A  VAL*     3.1    26.3    -      -       -      +
    160A  ARG      3.4    16.7    +      -       -      -
    161A  ILE*     3.7     6.7    -      -       -      -
    165A  HIS*     3.0    43.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 154 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  HIS*     6.1     1.8    -      -       +      -
    150A  GLY      2.8    12.7    +      -       -      +
    151A  ASN*     3.2    14.8    +      -       +      +
    153A  SER*     1.3    75.2    -      -       -      +
    155A  ASP*     1.3    81.3    +      -       -      +
    156A  LEU      3.0     0.2    -      -       -      -
    157A  LYS*     3.0    24.1    +      -       -      +
    158A  VAL      4.2     6.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  ASN*     2.9    19.0    +      -       -      +
    152A  ALA*     3.1    13.2    +      -       -      +
    154A  LYS*     1.3    99.6    +      -       -      +
    156A  LEU*     1.3    63.7    +      -       +      +
    157A  LYS*     3.3    14.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152A  ALA      3.2    12.3    +      -       -      +
    153A  SER      3.5     4.9    -      -       -      +
    154A  LYS      3.0     0.8    -      -       -      -
    155A  ASP*     1.3    82.0    -      -       +      +
    157A  LYS*     1.3    71.8    +      -       -      +
    158A  VAL*     3.0    20.0    +      -       +      +
    165A  HIS*     3.7    26.7    -      -       +      +
    168A  LEU*     4.2    18.4    -      -       +      -
----------------------------------------------------------
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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