Contacts of the helix formed by residues 60 - 86 (chain A) in PDB entry 6LGV


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 ARG 60 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  ARG*     2.8    33.0    +      -       +      +
     59A  SER*     1.3    91.2    -      -       -      +
     61A  PRO*     1.3    65.5    -      -       -      +
     62A  ALA      3.3     2.2    -      -       -      -
     63A  PRO*     3.3    22.3    -      -       +      +
     64A  VAL*     3.2    17.3    -      -       -      +
    118A  ASP*     3.1    34.1    +      -       -      -
    120A  ALA*     5.6     1.4    -      -       -      +
    121A  LEU*     3.9    27.5    -      -       +      +
    247A  THR*     3.6    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL*     3.0    20.4    -      -       +      +
     58A  LEU*     3.5    16.2    -      -       +      +
     59A  SER      3.3     9.2    -      -       -      +
     60A  ARG*     1.3    90.6    -      -       -      +
     62A  ALA*     1.4    54.5    +      -       +      +
     64A  VAL*     3.3     2.1    +      -       +      +
     65A  ALA*     2.7    40.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ARG      3.3     0.2    -      -       -      -
     61A  PRO*     1.4    81.9    -      -       +      +
     63A  PRO*     1.4    65.0    -      -       +      +
     65A  ALA*     3.9     3.9    -      -       -      +
     66A  ALA*     2.8    29.3    +      -       -      +
    243A  PHE*     3.5    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ARG*     3.3    30.1    -      -       +      +
     62A  ALA*     1.4    90.8    -      -       +      +
     64A  VAL*     1.3    59.1    +      -       -      +
     66A  ALA*     4.3     0.4    -      -       +      -
     67A  ALA*     3.0    30.8    +      -       -      +
    121A  LEU*     3.8    33.7    -      -       +      -
    125A  ILE*     3.8     2.6    -      -       -      +
    243A  PHE*     3.3    30.2    -      -       +      -
    247A  THR*     3.9     9.4    -      -       +      -
    251A  LEU*     3.8     6.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  ARG*     4.5     2.0    -      -       +      +
     57A  VAL*     4.3    22.4    -      -       +      -
     60A  ARG*     3.2    17.7    -      -       +      +
     61A  PRO*     3.3     8.9    +      -       +      +
     62A  ALA      3.2     0.8    -      -       -      -
     63A  PRO*     1.3    75.9    -      -       -      +
     65A  ALA*     1.3    63.4    +      -       -      +
     67A  ALA*     3.9     1.4    -      -       -      +
     68A  THR*     2.7    34.5    +      -       -      +
    121A  LEU*     3.8    20.4    -      -       +      -
    124A  THR*     3.9    19.1    -      -       +      -
    125A  ILE*     4.0    12.3    -      -       +      +
    128A  VAL*     4.2    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  PRO*     2.7    23.1    +      -       +      +
     62A  ALA*     4.0     3.4    -      -       -      +
     64A  VAL*     1.3    72.9    -      -       -      +
     66A  ALA*     1.3    64.1    +      -       -      +
     68A  THR*     3.8     4.2    -      -       -      -
     69A  PHE*     2.9    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  ALA      2.8    23.5    +      -       -      +
     63A  PRO      4.0     0.7    -      -       -      +
     65A  ALA*     1.3    72.3    -      -       -      +
     67A  ALA*     1.3    54.6    +      -       -      +
     69A  PHE*     4.0     4.7    -      -       -      +
     70A  LEU*     2.8    43.3    +      -       +      +
    241A  PHE*     3.7    36.6    -      -       +      -
    243A  PHE*     3.9    13.2    -      -       +      -
    251A  LEU*     4.2     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  PRO      3.0    19.8    +      -       -      +
     64A  VAL      3.9     1.6    -      -       -      +
     66A  ALA*     1.3    75.1    -      -       -      +
     68A  THR*     1.3    59.2    +      -       -      +
     70A  LEU*     4.7     0.2    -      -       -      -
     71A  HIS*     2.9    33.5    +      -       -      +
    125A  ILE*     3.8    35.7    -      -       +      -
    251A  LEU*     3.9    14.5    -      -       +      +
    254A  GLU*     4.8     3.1    -      -       +      -
    255A  VAL*     3.8    15.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  VAL*     2.7    22.6    +      -       -      +
     65A  ALA*     3.8     5.6    -      -       -      -
     67A  ALA*     1.3    78.9    -      -       -      +
     69A  PHE*     1.3    57.1    +      -       -      +
     71A  HIS*     3.8     3.1    -      -       -      +
     72A  TYR*     3.1    48.9    +      -       +      +
    125A  ILE*     5.2     5.0    +      -       -      +
    128A  VAL*     3.6    22.1    -      -       +      +
    129A  SER*     5.1     5.0    +      -       -      +
    132A  VAL*     4.3    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  ALA      2.9    17.8    +      -       -      +
     66A  ALA*     4.2     5.8    -      -       -      -
     68A  THR*     1.3    75.3    -      -       -      +
     70A  LEU*     1.3    90.4    +      -       +      +
     72A  TYR*     5.4     0.9    -      -       -      -
     73A  LEU*     2.9    58.3    +      -       +      +
    241A  PHE*     5.0    14.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with LEU 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  ALA*     2.8    34.2    +      -       +      +
     69A  PHE*     1.3    93.1    -      -       +      +
     71A  HIS*     1.3    58.6    +      -       -      +
     73A  LEU*     5.8     0.9    -      -       +      -
     74A  ILE*     2.9    58.2    +      -       +      +
    233A  SER      3.9    17.7    -      -       -      +
    234A  GLY*     4.4     7.9    -      -       -      -
    237A  GLY*     4.0    19.1    -      -       -      -
    241A  PHE*     4.7     6.5    -      -       +      -
    251A  LEU*     4.5     7.6    -      -       +      -
    255A  VAL*     3.9    18.1    -      -       +      +
    406A  A6L      4.5    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  ALA      2.9    18.7    +      -       -      +
     68A  THR*     3.8     5.2    -      -       -      +
     70A  LEU*     1.3    76.9    -      -       -      +
     72A  TYR*     1.3    82.7    +      +       -      +
     75A  MET*     3.0    36.4    +      -       +      +
     76A  PRO*     3.4     0.9    -      -       -      +
    100A  GLY      5.0     1.8    -      -       -      -
    102A  VAL      2.9    24.5    -      -       -      -
    103A  ALA*     3.7    14.8    -      -       -      -
    104A  SER*     3.7     7.9    +      -       -      +
    129A  SER*     3.9     1.8    +      -       -      +
    254A  GLU      3.7    13.2    -      -       -      +
    255A  VAL*     3.2    39.2    -      -       +      +
    258A  GLN*     2.5    27.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  THR*     3.1    31.1    +      -       +      +
     69A  PHE*     4.7     0.9    -      -       -      +
     71A  HIS*     1.3   105.1    -      +       +      +
     73A  LEU*     1.3    60.2    +      -       -      +
     76A  PRO*     3.4    18.9    -      -       +      +
    101A  SER      3.5    21.8    -      -       -      -
    102A  VAL      4.1     0.2    -      -       -      -
    103A  ALA*     3.2    11.8    -      -       -      -
    129A  SER*     2.7    34.7    +      -       -      -
    132A  VAL*     3.5    30.5    -      -       +      -
    133A  GLY*     3.1    16.3    -      -       -      -
    136A  ALA*     4.5     4.5    -      -       +      -
    140A  LEU*     3.6    32.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  PHE*     2.9    51.2    +      -       +      +
     70A  LEU*     4.2     1.1    -      -       +      +
     72A  TYR*     1.3    82.5    -      -       -      +
     74A  ILE*     1.3    78.8    +      -       +      +
     75A  MET      3.6     0.2    -      -       -      -
     76A  PRO*     4.0     0.4    -      -       -      +
     77A  LEU*     3.4    31.0    +      -       +      +
    144A  TYR*     4.8     4.9    +      -       -      +
    406A  A6L      4.7    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  LEU*     2.9    35.2    +      -       +      +
     73A  LEU*     1.3    86.1    -      -       +      +
     75A  MET*     1.3    66.9    +      -       +      +
     77A  LEU*     3.4     3.2    +      -       -      +
     78A  THR*     2.8    48.3    +      -       -      +
    229A  ILE*     4.3     8.1    -      -       +      +
    230A  GLY*     5.5     0.2    -      -       -      -
    233A  SER*     3.6    37.5    -      -       -      +
    255A  VAL*     5.4     1.1    -      -       +      -
    406A  A6L      3.6    50.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  HIS*     3.0    20.9    +      -       +      +
     74A  ILE*     1.3    82.8    -      -       -      +
     76A  PRO*     1.3    63.5    -      -       -      +
     78A  THR*     5.2     1.3    -      -       -      -
     79A  ALA      3.1     7.6    +      -       -      -
    100A  GLY*     3.3    20.7    -      -       -      +
    226A  HIS*     2.8    68.6    +      -       +      +
    230A  GLY*     3.6    24.9    -      -       -      -
    255A  VAL*     3.3    24.2    -      -       +      +
    256A  GLY*     3.9    21.8    -      -       -      +
    258A  GLN*     4.0    16.6    -      -       +      +
    282A  PHE*     4.3     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  HIS      3.4    11.7    -      -       -      +
     72A  TYR*     3.4    23.8    -      -       +      +
     73A  LEU      3.9     0.7    -      -       -      +
     74A  ILE      3.6     0.9    -      -       -      -
     75A  MET*     1.3    88.2    -      -       -      +
     77A  LEU*     1.3    66.1    +      -       -      +
     79A  ALA*     3.3     3.6    +      -       +      +
     80A  TRP*     3.1    23.4    +      -       -      +
     97A  VAL*     5.0     2.8    -      -       -      +
    100A  GLY*     3.3    22.0    -      -       -      +
    101A  SER*     3.7    13.9    -      -       -      +
    140A  LEU*     3.9    20.2    -      -       +      -
    144A  TYR*     3.6    26.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  LEU*     3.4    29.3    +      -       +      +
     74A  ILE      3.4     2.6    +      -       -      +
     75A  MET      3.4     0.2    -      -       -      -
     76A  PRO*     1.3    81.4    -      -       -      +
     78A  THR*     1.3    58.0    +      -       -      +
     80A  TRP*     3.2    30.7    +      -       +      +
     81A  ILE*     2.9    45.1    +      -       +      +
    144A  TYR*     3.9    22.5    +      -       +      +
    406A  A6L      3.7    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  ILE*     2.8    39.5    +      -       -      +
     75A  MET*     4.5     0.7    -      -       -      -
     77A  LEU*     1.3    72.5    -      -       -      +
     79A  ALA*     1.3    59.4    +      -       -      +
     81A  ILE*     3.4     2.1    +      -       +      +
     82A  LEU*     2.9    44.8    +      -       +      +
    226A  HIS*     3.6    24.7    -      -       +      -
    229A  ILE*     3.9    27.2    -      -       +      +
    406A  A6L      3.4    25.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  MET      3.1    18.9    +      -       -      +
     76A  PRO      3.6     4.9    -      -       -      +
     78A  THR*     1.3    76.7    -      -       -      +
     80A  TRP*     1.3    55.2    +      -       -      +
     82A  LEU*     3.3     5.3    +      -       -      +
     83A  ALA*     2.8    32.4    +      -       -      +
     96A  MET*     3.2    39.6    -      -       +      +
     97A  VAL*     3.9     5.8    -      -       -      -
    100A  GLY*     4.0     2.2    -      -       -      -
    226A  HIS*     3.5    17.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  PRO      3.1     8.7    +      -       -      +
     77A  LEU*     3.4    27.6    -      -       +      +
     79A  ALA*     1.3    77.3    -      -       -      +
     81A  ILE*     1.3    68.2    +      -       +      +
     83A  ALA*     3.4     4.2    +      -       +      +
     84A  MET*     3.1    67.0    +      -       +      +
     97A  VAL*     4.3     8.6    -      -       +      +
    144A  TYR*     3.4    63.6    +      +       +      +
----------------------------------------------------------
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Residues in contact with ILE 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  LEU*     2.9    34.4    +      -       +      +
     78A  THR*     3.8     4.5    -      -       -      +
     80A  TRP*     1.3    89.9    -      -       +      +
     82A  LEU*     1.3    60.3    +      -       +      +
     84A  MET*     3.3    14.2    +      -       +      +
     85A  LEU*     2.8    56.6    +      -       +      +
    406A  A6L      3.6    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  THR*     2.9    32.9    +      -       +      +
     79A  ALA      3.8     2.5    -      -       -      +
     81A  ILE*     1.3    74.1    -      -       +      +
     83A  ALA*     1.3    63.6    +      -       -      +
     85A  LEU*     3.2    15.8    +      -       +      +
     86A  PHE*     3.0    50.8    +      -       +      +
     88A  MET*     4.9     1.3    -      -       -      -
     96A  MET*     3.9    12.6    -      -       +      -
    222A  ALA*     3.5    26.7    -      -       +      +
    225A  LEU*     4.1    19.1    -      -       +      -
    226A  HIS*     3.7    26.9    -      -       +      +
    229A  ILE*     4.9     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  ALA      2.8    19.3    +      -       -      +
     80A  TRP*     3.8     7.0    -      -       +      +
     82A  LEU*     1.3    77.8    -      -       -      +
     84A  MET*     1.3    60.5    +      -       +      +
     87A  ARG      3.2     2.4    +      -       -      -
     88A  MET*     2.9    47.4    +      -       -      +
     93A  SER*     3.5    37.5    +      -       -      +
     96A  MET*     4.2     6.7    -      -       +      +
     97A  VAL*     5.6     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  TRP*     3.1    70.6    +      -       +      +
     81A  ILE*     3.7    16.8    -      -       +      +
     83A  ALA*     1.3    75.5    -      -       +      +
     85A  LEU*     1.3    68.8    +      -       +      +
     87A  ARG*     2.9    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  ILE*     2.8    46.6    +      -       +      +
     82A  LEU*     3.2    19.7    +      -       +      +
     84A  MET*     1.3    78.0    -      -       +      +
     86A  PHE*     1.3    66.1    +      -       +      +
     87A  ARG*     3.4    15.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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     82A  LEU*     3.0    44.6    +      -       +      +
     85A  LEU*     1.3    81.2    -      -       +      +
     87A  ARG*     1.3    71.7    +      -       -      +
     88A  MET*     3.3    20.0    +      -       +      +
    218A  VAL*     3.7    44.0    -      -       +      +
    221A  ILE*     3.7    34.8    -      -       +      -
    222A  ALA*     4.0    23.3    -      -       +      -
    225A  LEU*     4.2     7.0    -      -       +      -
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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) +   -    +    +   +   +    +    -
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Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il