Contacts of the helix formed by residues 136 - 161 (chain A) in PDB entry 3PJA


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 136 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  TYR*     4.6     4.0    +      -       -      +
     85A  TYR*     3.5    36.2    +      -       +      +
     88A  HIS*     3.8    14.3    +      -       +      -
     92A  ARG*     4.2     5.0    +      -       -      -
    134A  HIS*     3.8     4.8    +      -       -      +
    135A  LEU*     1.3    77.2    -      -       -      +
    137A  VAL*     1.3    70.3    +      -       -      +
    138A  GLU*     2.8    33.2    -      -       -      +
    139A  ASP*     3.1    24.4    +      -       -      +
    140A  TYR*     3.1    20.1    +      -       -      +
     86E  ARG*     3.2    13.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  ARG*     3.8    32.5    -      -       -      +
    128A  ASP*     5.2     1.1    -      -       -      +
    135A  LEU      3.4     1.9    +      -       -      -
    136A  ASP*     1.3    75.8    +      -       -      +
    138A  GLU*     1.3    68.8    +      -       -      +
    140A  TYR*     3.2     4.0    +      -       -      +
    141A  LEU*     3.0    34.6    +      -       +      +
     10E  LEU*     4.2    14.6    -      -       +      -
     13E  PHE*     4.0    24.5    -      -       +      -
     14E  LEU*     3.5    31.4    -      -       +      -
     17E  GLU*     5.2     3.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  ARG*     4.4     7.9    -      -       -      +
     96A  GLN*     5.1     0.2    -      -       -      -
    136A  ASP*     2.8    29.0    -      -       -      +
    137A  VAL*     1.3    78.8    +      -       -      +
    139A  ASP*     1.3    64.1    +      -       -      +
    141A  LEU*     3.1     4.3    +      -       -      +
    142A  SER*     3.0    26.8    +      -       -      +
    188A  ASN*     3.5    38.3    +      -       +      +
    191A  LEU*     3.8    20.5    -      -       +      +
     14E  LEU*     4.3    11.4    -      -       -      +
     17E  GLU*     2.9    27.7    -      -       -      +
     21E  ARG*     4.6     5.1    +      -       -      -
     86E  ARG*     3.3    11.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  HIS*     3.1    26.0    -      -       -      -
     92A  ARG*     3.0    27.0    +      -       -      +
     95A  LEU*     3.3    19.9    -      -       +      +
     96A  GLN*     3.2    30.8    +      -       +      +
     99A  VAL*     4.2     6.1    -      -       -      +
    135A  LEU*     4.0    12.3    -      -       +      -
    136A  ASP*     3.1    22.9    +      -       +      +
    138A  GLU*     1.3    75.5    -      -       -      +
    140A  TYR*     1.3    62.5    +      -       -      +
    142A  SER*     3.3     3.3    +      -       -      -
    143A  GLY*     3.0    19.6    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     99A  VAL*     3.7    20.9    -      -       +      +
    113A  LEU*     3.8    10.7    -      -       +      +
    114A  VAL*     2.6    26.7    +      -       +      -
    115A  THR      4.0     0.7    -      -       -      -
    116A  ARG*     3.5    52.7    +      -       +      -
    119A  VAL*     4.1    10.1    -      -       +      -
    135A  LEU*     4.4     5.7    -      -       +      +
    136A  ASP      3.1    13.4    +      -       -      +
    137A  VAL      3.4     8.1    -      -       -      +
    139A  ASP*     1.3    76.5    -      -       -      +
    141A  LEU*     1.3    70.4    +      -       +      +
    143A  GLY*     3.1     4.3    +      -       -      -
    144A  VAL*     3.0    42.8    +      -       +      +
      6E  ILE*     3.7    18.1    -      -       +      +
      7E  PHE*     5.7     0.9    -      +       -      -
     10E  LEU*     3.7    31.2    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    137A  VAL*     3.0    29.1    +      -       +      +
    138A  GLU      3.7     6.5    -      -       -      +
    140A  TYR*     1.3    82.0    -      -       +      +
    142A  SER*     1.3    61.8    +      -       -      +
    144A  VAL*     3.3     7.4    +      -       +      +
    145A  LEU*     3.0    27.4    +      -       -      +
    181A  PHE*     3.9    25.4    -      -       +      -
    184A  LEU*     3.7    24.2    -      -       +      -
    186A  LEU*     4.6     2.0    -      -       +      -
    191A  LEU*     4.2    24.9    -      -       +      -
      7E  PHE*     4.0    14.6    -      -       +      -
     10E  LEU*     3.5    27.4    -      -       +      -
     14E  LEU*     4.5     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  ARG*     4.9     2.6    +      -       -      -
     96A  GLN*     3.3    34.0    +      -       -      -
    138A  GLU      3.0    13.6    +      -       -      -
    139A  ASP      3.5     8.1    -      -       -      -
    141A  LEU*     1.3    75.3    -      -       -      +
    143A  GLY*     1.3    66.9    +      -       -      +
    145A  LEU*     3.0    13.7    +      -       -      +
    146A  ILE*     3.0    18.9    +      -       -      +
    191A  LEU*     3.4    19.9    -      -       -      +
    194A  ARG*     4.3    15.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  GLN*     3.6    23.7    +      -       -      +
     99A  VAL*     3.8    11.7    -      -       -      -
    100A  PHE*     3.6    14.0    -      -       -      -
    139A  ASP      3.0     8.5    +      -       -      -
    140A  TYR      3.1     3.8    +      -       -      -
    142A  SER*     1.3    78.5    -      -       -      +
    144A  VAL*     1.3    56.6    +      -       -      +
    146A  ILE*     3.4     9.6    +      -       -      +
    147A  LEU*     3.0    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  VAL*     5.0     2.5    -      -       +      -
    113A  LEU*     4.3    14.8    -      -       +      -
    114A  VAL*     6.4     0.4    -      -       +      -
    140A  TYR*     3.0    51.6    +      -       +      +
    141A  LEU*     3.4    10.5    -      -       +      +
    142A  SER      3.0     0.2    -      -       -      -
    143A  GLY*     1.3    75.4    -      -       -      +
    145A  LEU*     1.3    59.8    +      -       -      +
    147A  LEU*     3.0    12.7    -      -       +      +
    148A  ALA*     3.0    25.1    +      -       -      +
    177A  LEU*     4.0    32.0    -      -       +      +
    181A  PHE*     4.3    14.8    -      -       +      -
      7E  PHE*     4.9     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  LEU      3.0    18.2    +      -       -      +
    142A  SER      3.0     6.8    +      -       -      +
    144A  VAL*     1.3    71.9    -      -       -      +
    146A  ILE*     1.3    65.1    +      -       -      +
    148A  ALA*     3.1     6.6    +      -       -      +
    149A  SER*     3.0    22.9    +      -       -      -
    181A  PHE*     3.6    32.1    -      -       +      -
    191A  LEU*     4.2    13.9    -      -       +      -
    194A  ARG*     3.8    26.5    -      -       +      +
    195A  TYR*     3.6    33.4    -      -       +      +
    198A  LEU*     4.0    32.3    -      -       +      +
    201A  ASP*     4.5     1.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  GLN*     4.5    16.6    -      -       +      +
     97A  ARG*     4.9    11.9    -      -       +      +
    100A  PHE*     3.5    32.3    -      -       +      -
    142A  SER      3.0    16.9    +      -       -      +
    143A  GLY*     3.5    15.9    -      -       -      +
    145A  LEU*     1.3    72.7    -      -       -      +
    147A  LEU*     1.3    67.0    +      -       -      +
    149A  SER*     3.1    12.8    +      -       -      +
    150A  GLU*     3.0    21.4    +      -       +      +
    194A  ARG*     3.7    36.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  PHE*     3.4    13.2    -      -       +      -
    103A  ALA*     3.9    23.6    -      -       +      +
    104A  PHE*     3.6    39.3    -      -       +      +
    107A  TYR*     4.8     3.6    -      -       +      -
    112A  THR      5.9     0.2    -      -       -      +
    113A  LEU*     4.4    11.4    -      -       +      -
    143A  GLY      3.0    13.7    +      -       -      +
    144A  VAL*     3.0    16.6    -      -       -      +
    146A  ILE*     1.3    76.7    -      -       -      +
    148A  ALA*     1.3    60.9    +      -       -      +
    150A  GLU*     3.0     4.9    +      -       -      +
    151A  LEU*     2.9    41.4    +      -       +      +
    173A  PHE*     4.3    26.2    -      -       +      -
    177A  LEU*     5.2     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  VAL      3.0    11.4    +      -       -      +
    145A  LEU*     3.1    10.3    +      -       -      +
    147A  LEU*     1.3    78.0    -      -       -      +
    149A  SER*     1.3    58.4    +      -       -      +
    151A  LEU*     2.9    18.8    +      -       -      -
    152A  SER*     3.0    12.0    +      -       -      -
    174A  ILE*     3.6    20.6    -      -       +      +
    177A  LEU*     4.2    15.7    -      -       +      +
    198A  LEU*     3.6    31.0    -      -       +      -
    201A  ASP*     3.8     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  LEU      3.0    11.9    +      -       -      -
    146A  ILE*     3.1    18.6    +      -       -      +
    148A  ALA*     1.3    76.2    -      -       -      +
    150A  GLU*     1.3    57.6    +      -       -      +
    152A  SER*     3.1    13.6    +      -       -      -
    153A  ARG*     3.8     5.7    +      -       -      +
    201A  ASP*     3.1    27.3    +      -       -      -
    203B  LYS*     3.7    27.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  GLN*     2.6    35.4    +      -       -      +
     46A  HIS*     3.1    12.1    +      -       -      -
    100A  PHE*     3.5    30.4    -      -       +      -
    104A  PHE*     4.1    19.7    -      -       +      -
    146A  ILE*     3.0    13.2    +      -       +      +
    147A  LEU*     3.3     9.9    -      -       +      +
    148A  ALA      3.0     0.6    -      -       -      -
    149A  SER*     1.3    81.1    -      -       -      +
    151A  LEU*     1.3    59.2    +      -       +      +
    152A  SER      3.4     0.2    -      -       -      -
    153A  ARG*     3.5    19.7    +      -       -      +
    154A  LEU*     3.0    23.6    +      -       -      +
    203B  LYS*     5.4     3.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  PHE*     4.0    20.6    -      -       +      -
    107A  TYR*     4.0    27.8    -      -       +      -
    147A  LEU*     2.9    31.9    +      -       +      +
    148A  ALA*     2.9     6.4    +      -       -      +
    150A  GLU*     1.3    77.3    -      -       -      +
    152A  SER*     1.3    60.7    +      -       -      +
    154A  LEU*     3.6    26.9    -      -       +      -
    155A  SER      2.9    21.1    +      -       -      -
    170A  ILE*     3.2    21.4    -      -       +      +
    173A  PHE*     3.8    34.3    -      -       +      -
    174A  ILE*     4.1     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  ALA      3.0     7.8    +      -       -      -
    149A  SER      3.1     8.7    +      -       -      -
    151A  LEU*     1.3    76.8    -      -       -      +
    153A  ARG*     1.3    64.1    +      -       -      +
    155A  SER*     3.1    13.0    +      -       -      -
    156A  VAL*     3.1    17.2    +      -       -      +
    174A  ILE*     4.2     1.0    -      -       -      +
    201A  ASP*     3.0    30.8    +      -       -      -
    204A  LYS*     3.6    27.9    +      -       -      +
    205A  VAL*     3.8    25.1    -      -       -      -
    208A  VAL*     5.4     0.2    -      -       -      +
    203B  LYS*     5.4     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  GLN*     3.7    26.7    +      -       -      +
     46A  HIS*     4.0    23.2    +      -       +      +
    149A  SER      4.0     9.4    -      -       -      +
    150A  GLU*     3.5    22.3    +      -       -      +
    151A  LEU      3.3     0.6    -      -       -      -
    152A  SER*     1.3    82.0    +      -       -      +
    154A  LEU*     1.3    63.1    +      -       -      +
    156A  VAL*     3.2     6.4    +      -       +      +
    157A  ASN*     3.0    31.6    +      -       -      +
    204A  LYS*     4.0    10.5    -      -       -      +
    175B  ASN*     4.0     6.7    +      -       -      -
    178B  ASP*     4.6    10.3    +      -       -      -
    202B  VAL*     3.7    17.8    -      -       -      +
    203B  LYS*     4.3    29.3    -      -       +      +
    206B  GLU*     3.0    41.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 154 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  VAL*     3.9    26.0    -      -       +      +
     46A  HIS*     3.5    22.8    -      -       +      +
    104A  PHE*     4.4     5.2    -      -       +      -
    107A  TYR*     5.2     2.5    -      -       +      -
    108A  LEU*     4.0    23.8    -      -       +      -
    150A  GLU      3.0    15.3    +      -       -      +
    151A  LEU*     3.5    32.1    -      -       +      +
    152A  SER      3.3     0.4    -      -       -      -
    153A  ARG*     1.3    75.0    -      -       -      +
    155A  SER*     1.3    58.1    +      -       -      +
    157A  ASN*     3.9     1.5    -      -       +      -
    158A  SER*     2.9    38.7    +      -       -      +
    166A  ARG*     4.7    15.5    -      -       -      +
    170A  ILE*     4.2     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  LEU      2.9    14.2    +      -       -      -
    152A  SER*     3.1    13.0    +      -       -      -
    154A  LEU*     1.3    76.6    -      -       -      +
    156A  VAL*     1.3    63.8    +      -       -      +
    158A  SER*     3.1     8.3    +      -       -      -
    159A  VAL*     3.1    24.5    +      -       -      +
    167A  PRO*     3.5    20.6    -      -       -      +
    170A  ILE*     3.7    22.0    -      -       -      -
    205A  VAL*     3.9     8.1    -      -       -      +
    208A  VAL*     3.6    20.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152A  SER      3.1     3.8    +      -       -      +
    153A  ARG*     3.6     7.4    -      -       +      +
    155A  SER*     1.3    79.0    -      -       -      +
    157A  ASN*     1.3    70.6    +      -       -      +
    159A  VAL      3.1     3.1    +      -       -      -
    160A  THR*     3.1    18.1    +      -       -      +
    204A  LYS*     3.8    30.3    -      -       +      +
    208A  VAL*     3.9    19.3    -      -       +      -
    206B  GLU*     3.9    17.0    -      -       +      +
    207B  GLU*     4.4    10.3    -      -       +      +
    210B  TYR*     3.5    44.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 157 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  VAL      5.7     0.2    -      -       -      +
     46A  HIS*     2.9    47.4    +      -       +      +
    153A  ARG*     3.0    15.2    +      -       -      +
    154A  LEU*     4.1     3.1    -      -       +      +
    156A  VAL*     1.3    77.1    -      -       -      +
    158A  SER*     1.3    57.6    +      -       -      +
    160A  THR*     3.3    13.0    +      -       -      +
    161A  ALA*     3.0    27.5    +      -       -      +
    206B  GLU*     2.9    53.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 158 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  LEU*     2.9    23.5    +      -       -      +
    155A  SER*     3.1     9.9    -      -       -      -
    157A  ASN*     1.3    75.3    -      -       -      +
    159A  VAL*     1.3    60.8    +      -       -      +
    161A  ALA*     3.0    20.6    +      -       -      +
    163A  ASP*     2.9    46.5    +      -       -      +
    166A  ARG*     3.5    23.6    -      -       -      +
    167A  PRO*     3.5     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 159 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155A  SER      3.1     4.1    +      -       -      +
    156A  VAL      3.6     1.3    -      -       -      +
    158A  SER*     1.3    73.7    -      -       -      +
    160A  THR*     1.3    65.7    +      -       -      +
    161A  ALA      3.2     0.5    +      -       -      -
    162A  GLY*     3.2     9.0    +      -       -      -
    163A  ASP      4.0     5.4    -      -       -      +
    164A  TYR*     3.5    17.8    +      -       +      +
    167A  PRO*     3.3    29.2    -      -       +      -
    208A  VAL*     3.6    21.3    -      -       +      -
    212A  LEU*     4.1    25.4    -      -       +      -
    210B  TYR*     3.5    26.9    -      -       +      -
    213B  SER*     4.2     5.2    +      -       -      -
    214B  ILE*     4.4    15.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 160 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  VAL      3.1     7.4    +      -       -      -
    157A  ASN*     3.4    17.5    +      -       -      +
    158A  SER      3.2     0.2    -      -       -      -
    159A  VAL*     1.3    77.5    -      -       -      +
    161A  ALA*     1.3    59.8    +      -       -      +
    162A  GLY      3.6     0.3    +      -       -      -
    206B  GLU      4.5     1.6    +      -       -      -
    209B  VAL*     3.8    23.7    +      -       +      +
    210B  TYR*     3.3    32.7    +      -       -      +
    213B  SER*     3.7    21.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 161 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  HIS      6.1     0.4    -      -       -      +
     52A  GLN*     5.6    10.8    -      -       +      +
    157A  ASN      3.0    15.0    +      -       -      +
    158A  SER*     3.0    11.4    +      -       -      +
    160A  THR*     1.3    77.9    -      -       +      +
    162A  GLY*     1.3    57.7    +      -       -      +
    163A  ASP*     3.3     3.9    +      -       +      +
----------------------------------------------------------
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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