Contacts of the helix formed by residues 48 - 82 (chain A) in PDB entry 3NRX


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 ASN 48 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LEU*     1.3    58.6    +      -       -      +
     50A  LEU      3.4     1.6    -      -       -      -
     51A  LYS*     3.6    40.2    -      -       -      +
     52A  GLU*     2.8    50.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  ARG*     5.6    13.7    -      -       +      +
     42A  PHE*     6.5     0.9    -      -       +      -
     48A  ASN*     1.3    77.9    -      -       -      +
     50A  LEU*     1.3    68.2    +      -       +      +
     52A  GLU*     3.8     6.3    -      -       +      +
     53A  GLU*     2.9    51.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LEU*     1.3    85.9    -      -       +      +
     51A  LYS*     1.3    60.8    +      -       -      +
     53A  GLU*     4.2     5.6    -      -       +      +
     54A  LYS*     2.9    63.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  ASN*     3.4    33.2    +      -       -      +
     49A  LEU      3.3     0.4    -      -       -      -
     50A  LEU*     1.3    77.5    -      -       +      +
     52A  GLU*     1.3    56.8    +      -       -      +
     54A  LYS*     3.7     5.2    -      -       -      +
     55A  GLN*     2.7    60.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  PHE*     4.0    18.9    -      -       +      +
     35A  LYS*     3.1    54.3    +      -       +      +
     36A  ALA*     5.1     0.3    +      -       -      -
     41A  ARG*     5.9     1.7    -      -       -      +
     48A  ASN*     2.8    36.4    +      -       +      +
     49A  LEU*     4.0     6.4    -      -       +      +
     51A  LYS*     1.3    74.8    -      -       -      +
     53A  GLU*     1.3    61.8    +      -       +      +
     55A  GLN*     3.8     7.7    -      -       -      +
     56A  ARG*     2.9    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ALA*     4.7    10.9    -      -       -      +
     41A  ARG*     5.7     2.4    +      -       -      -
     49A  LEU*     2.9    37.0    +      -       +      +
     50A  LEU*     4.2     6.3    -      -       +      +
     52A  GLU*     1.3    76.8    -      -       +      +
     54A  LYS*     1.3    60.3    +      -       +      +
     56A  ARG*     2.8    38.5    +      -       -      +
     57A  ALA*     2.8    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  LEU*     2.9    52.5    +      -       +      +
     51A  LYS*     3.8     4.7    -      -       -      +
     53A  GLU*     1.3    76.9    -      -       +      +
     55A  GLN*     1.3    63.1    +      -       +      +
     57A  ALA*     3.4     6.3    +      -       -      +
     58A  LYS*     3.1    38.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  PHE*     3.5    38.8    -      -       +      -
     51A  LYS*     2.7    52.8    +      -       +      +
     52A  GLU*     3.9     3.5    -      -       -      +
     54A  LYS*     1.3    73.6    -      -       +      +
     56A  ARG*     1.3    60.8    +      -       -      +
     58A  LYS*     3.6    12.5    +      -       +      +
     59A  LEU*     3.3    30.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  PHE*     4.8     5.0    -      -       +      -
     32A  PHE*     3.1    43.0    -      -       +      -
     33A  GLU*     3.2    29.3    +      -       +      +
     36A  ALA*     3.7    17.6    -      -       -      +
     52A  GLU      2.9    18.7    +      -       -      +
     53A  GLU*     2.8    32.5    +      -       -      +
     55A  GLN*     1.3    74.5    -      -       -      +
     57A  ALA*     1.3    61.3    +      -       -      +
     59A  LEU*     3.3     6.2    +      -       -      +
     60A  GLN*     3.0    53.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  GLU      2.8    17.9    +      -       -      +
     54A  LYS*     3.7     6.7    -      -       -      +
     55A  GLN      3.4     0.2    -      -       -      -
     56A  ARG*     1.3    75.2    -      -       -      +
     58A  LYS*     1.3    64.2    +      -       -      +
     60A  GLN*     3.4    19.1    -      -       -      +
     61A  LYS*     3.2    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LYS*     3.1    30.4    +      -       -      +
     55A  GLN*     3.9    13.0    -      -       +      +
     56A  ARG      3.3     0.2    -      -       -      -
     57A  ALA*     1.3    75.1    -      -       +      +
     59A  LEU*     1.3    59.8    +      -       +      +
     61A  LYS*     3.3     7.6    +      -       -      +
     62A  MET*     3.0    35.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  THR*     3.6    26.6    -      -       +      +
     28A  LEU*     3.8    37.0    -      -       +      -
     29A  PHE*     3.8    15.7    -      -       +      +
     32A  PHE*     3.5    31.0    -      -       +      -
     55A  GLN*     3.3    17.9    +      -       +      +
     56A  ARG*     3.3     8.4    +      -       -      +
     57A  ALA      3.3     0.4    -      -       -      -
     58A  LYS*     1.3    75.2    -      -       +      +
     60A  GLN*     1.3    62.3    -      -       -      +
     62A  MET*     3.9    13.4    -      -       +      +
     63A  LEU*     3.1    34.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  PHE*     4.0    21.2    -      -       +      -
     33A  GLU*     4.5     3.6    +      -       -      -
     56A  ARG*     3.0    48.1    +      -       -      +
     57A  ALA*     3.4    22.1    -      -       -      +
     59A  LEU*     1.3    76.6    -      -       -      +
     61A  LYS*     1.3    56.7    +      -       -      +
     63A  LEU*     4.7     2.0    -      -       -      +
     64A  PRO*     3.0    24.9    -      -       -      +
    100A  TRP*     6.3     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  ALA      3.2     9.6    +      -       -      +
     58A  LYS*     3.6    10.8    -      -       -      +
     59A  LEU      3.2     0.2    -      -       -      -
     60A  GLN*     1.3    78.8    -      -       -      +
     62A  MET*     1.3    63.1    +      -       -      +
     64A  PRO*     3.3    16.3    -      -       -      +
     65A  LYS*     3.5    37.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  LYS*     5.9     2.7    -      -       -      -
     25A  THR*     4.1    28.5    -      -       +      -
     58A  LYS*     3.0    22.5    +      -       +      +
     59A  LEU*     3.3    13.4    +      -       +      +
     61A  LYS*     1.3    75.8    -      -       -      +
     63A  LEU*     1.3    65.6    +      -       -      +
     65A  LYS*     3.0    19.8    +      -       +      +
     66A  LEU*     2.9    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  TRP*     3.5    30.5    -      -       +      +
     25A  THR*     3.9    21.3    -      -       +      +
     26A  TRP*     4.0    17.0    -      -       +      +
     29A  PHE*     3.6    37.2    -      -       +      -
     59A  LEU      3.1    20.1    +      -       -      +
     60A  GLN*     4.7     1.3    -      -       -      +
     62A  MET*     1.3    75.4    -      -       -      +
     64A  PRO*     1.3    70.2    -      -       +      +
     66A  LEU*     3.4     5.7    +      -       +      +
     67A  GLU*     2.9    32.7    +      -       -      +
    100A  TRP*     3.7    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  GLN      3.0    26.2    -      -       -      +
     61A  LYS*     3.3    13.2    -      -       -      +
     63A  LEU*     1.3    89.1    -      -       +      +
     65A  LYS*     1.3    58.3    +      -       +      +
     67A  GLU*     3.3     8.1    +      -       +      +
     68A  GLU*     3.0    30.7    +      -       -      +
    100A  TRP*     5.7     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  LYS*     3.5    45.5    -      -       +      +
     62A  MET*     3.0    19.4    +      -       +      +
     64A  PRO*     1.3    76.8    -      -       +      +
     66A  LEU*     1.3    66.0    +      -       -      +
     68A  GLU*     4.1     3.9    -      -       -      +
     69A  GLU*     3.2    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  GLY*     5.9     2.0    -      -       -      +
     21A  LYS*     4.1    24.9    -      -       +      +
     22A  TRP*     4.1    22.0    -      -       +      -
     25A  THR*     3.6    33.7    -      -       +      +
     62A  MET*     2.9    33.3    +      -       +      +
     63A  LEU*     3.7     8.5    -      -       +      +
     65A  LYS*     1.3    75.9    -      -       -      +
     67A  GLU*     1.3    58.8    +      -       -      +
     69A  GLU*     3.5    17.5    +      -       -      +
     70A  LEU*     2.9    36.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  TRP*     3.0    28.3    +      -       +      +
     63A  LEU*     2.9    23.4    +      -       -      +
     64A  PRO*     3.7     6.8    -      -       +      +
     66A  LEU*     1.3    74.1    -      -       -      +
     68A  GLU*     1.3    60.8    +      -       -      +
     70A  LEU*     3.3     5.0    +      -       +      -
     71A  LYS*     2.9    30.7    +      -       -      +
     93A  MET*     3.6    17.9    -      -       +      +
     96A  VAL*     3.4    21.1    -      -       +      +
    100A  TRP*     2.7    34.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  PRO      3.0    16.9    +      -       -      +
     65A  LYS*     4.2     4.7    -      -       -      +
     67A  GLU*     1.3    75.9    -      -       -      +
     69A  GLU*     1.3    63.4    +      -       -      +
     71A  LYS*     3.5    20.3    +      -       -      +
     72A  ALA*     3.1    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  LYS      3.2    18.4    +      -       -      +
     66A  LEU*     3.6    19.3    -      -       -      +
     68A  GLU*     1.3    77.6    -      -       -      +
     70A  LEU*     1.3    64.9    +      -       +      +
     72A  ALA*     3.3     8.6    +      -       -      +
     73A  ARG*     3.1    67.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     15A  LEU*     3.8    32.3    -      -       +      +
     18A  GLY*     3.5    32.8    -      -       -      +
     19A  VAL*     4.0     4.9    -      -       +      +
     22A  TRP*     4.0    12.6    -      -       +      -
     66A  LEU*     2.9    23.4    +      -       +      +
     67A  GLU*     3.3     5.1    +      -       +      +
     69A  GLU*     1.3    79.4    -      -       +      +
     71A  LYS*     1.3    57.2    -      -       -      +
     73A  ARG*     3.2    10.0    +      -       +      +
     74A  ILE*     2.9    44.7    +      -       +      +
     92A  PHE*     3.9    22.0    -      -       +      -
     93A  MET*     4.3     9.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  GLU      2.9    17.3    +      -       -      +
     68A  GLU*     3.9    20.5    +      -       -      +
     70A  LEU*     1.3    74.1    -      -       -      +
     72A  ALA*     1.3    57.6    +      -       -      +
     74A  ILE*     3.2     3.6    +      -       +      +
     75A  GLU*     2.9    67.0    +      -       +      +
     93A  MET*     4.1    30.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  GLU*     3.1    22.7    +      -       -      +
     69A  GLU*     3.3    12.3    -      -       -      +
     71A  LYS*     1.3    77.1    -      -       -      +
     73A  ARG*     1.3    63.5    +      -       +      +
     75A  GLU*     4.1     5.7    -      -       -      +
     76A  LEU*     3.3    34.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  VAL*     5.8     0.7    -      -       -      +
     14A  GLU*     3.7    33.8    +      -       -      +
     15A  LEU*     3.6    21.4    -      -       +      +
     18A  GLY*     6.0     4.2    -      -       -      -
     69A  GLU*     3.1    55.2    +      -       +      +
     70A  LEU*     3.8    10.6    -      -       +      +
     72A  ALA*     1.3    76.0    -      -       +      +
     74A  ILE*     1.3    65.4    +      -       -      +
     76A  LEU*     3.6     9.5    +      -       +      +
     77A  TRP*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     15A  LEU*     4.2    11.9    -      -       +      -
     70A  LEU*     2.9    27.1    +      -       +      +
     71A  LYS*     3.7     3.8    -      -       +      +
     73A  ARG*     1.3    74.9    -      -       -      +
     75A  GLU*     1.3    62.3    +      -       +      +
     77A  TRP*     3.0     4.8    +      -       -      +
     78A  GLU*     2.8    43.3    +      -       -      +
     85A  PHE*     3.5    54.1    -      -       +      +
     91A  LYS*     6.0     0.4    -      -       -      -
     92A  PHE*     4.2    10.5    -      -       +      -
     93A  MET*     4.0    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  LYS*     2.9    56.8    +      -       +      +
     72A  ALA*     4.1     5.8    -      -       -      +
     74A  ILE*     1.3    72.9    -      -       +      +
     76A  LEU*     1.3    63.6    +      -       +      +
     78A  GLU*     3.4    13.1    +      -       -      +
     79A  GLN*     3.0    46.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  ALA*     3.3    24.1    +      -       +      +
     73A  ARG*     3.8     8.3    -      -       +      +
     74A  ILE      3.3     0.6    -      -       -      -
     75A  GLU*     1.3    78.0    -      -       +      +
     77A  TRP*     1.3    62.4    +      -       -      +
     79A  GLN*     3.3    19.3    +      -       -      +
     80A  GLU*     3.0    24.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  VAL*     3.5    30.2    -      -       +      +
     12A  HIS*     3.4    57.5    -      +       +      +
     15A  LEU*     3.6    17.5    -      -       +      -
     73A  ARG      3.0    18.5    +      -       -      +
     74A  ILE      3.4     2.9    -      -       -      +
     76A  LEU*     1.3    75.9    -      -       -      +
     78A  GLU*     1.3    62.9    +      -       -      +
     80A  GLU*     3.2     4.4    +      -       -      -
     81A  HIS*     2.9    71.4    +      +       +      +
     83A  LYS*     4.1    22.7    -      -       +      -
     84A  ALA      4.0     7.6    -      -       -      -
     85A  PHE*     3.9    34.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  ILE*     2.8    36.7    +      -       +      +
     75A  GLU*     3.8    13.0    -      -       -      +
     77A  TRP*     1.3    74.9    -      -       +      +
     79A  GLN*     1.3    55.9    +      -       +      +
     82A  SER*     2.7    35.0    +      -       -      -
     83A  LYS      3.2    21.5    +      -       -      +
     84A  ALA*     3.3     0.6    -      -       -      -
     85A  PHE*     2.7    32.8    +      -       +      +
     91A  LYS*     3.0    33.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  GLU*     3.0    46.4    +      -       -      +
     76A  LEU*     3.5    25.6    -      -       -      +
     78A  GLU*     1.3    79.5    -      -       +      +
     80A  GLU*     1.3    61.9    +      -       -      +
     82A  SER*     3.8     9.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  TYR*     2.6    44.7    +      -       +      +
     76A  LEU      3.0    17.4    +      -       -      +
     77A  TRP*     3.6     5.6    -      -       -      +
     79A  GLN*     1.3    78.4    -      -       -      +
     81A  HIS*     1.3    69.4    -      -       +      +
     82A  SER*     3.7     4.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  TYR*     3.5    47.0    +      +       -      -
      9A  TYR*     4.7    12.3    -      +       -      -
     11A  VAL*     5.2     1.4    -      -       -      +
     77A  TRP*     2.9    64.9    +      +       +      +
     80A  GLU*     1.3    84.5    -      -       +      +
     82A  SER*     1.3    72.2    +      -       -      +
     83A  LYS*     3.2    36.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  GLU      2.7    19.0    +      -       -      -
     79A  GLN*     3.8     6.6    +      -       -      +
     80A  GLU      3.5     7.2    +      -       -      -
     81A  HIS*     1.3    77.1    -      -       -      +
     83A  LYS*     1.3    57.9    +      -       -      +
----------------------------------------------------------
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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