Contacts of the helix formed by residues 36 - 62 (chain A) in PDB entry 6GA6


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 36 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  VAL*     3.7     1.2    -      -       -      +
     35A  SER*     1.3    79.3    +      -       -      +
     37A  PRO*     1.3    72.5    -      -       -      +
     38A  ASP*     3.3    13.8    +      -       -      +
     39A  ALA*     2.9    23.7    +      -       -      +
     40A  LYS*     2.9    29.6    +      -       -      +
    230A  PHE*     3.7    27.8    -      -       +      -
    231A  GLY*     3.4    23.8    +      -       -      +
    233A  ALA*     5.7     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 37 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  SER      3.2     6.7    -      -       -      +
     36A  ASP*     1.3    93.2    -      -       -      +
     38A  ASP*     1.3    65.2    +      -       -      +
     40A  LYS*     3.5    18.0    +      -       -      +
     41A  LYS*     2.9    40.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 38 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ASP*     3.3    12.2    +      -       -      +
     37A  PRO*     1.3    79.4    -      -       -      +
     39A  ALA*     1.3    66.1    +      -       -      +
     41A  LYS*     3.1    31.5    +      -       -      +
     42A  PHE*     3.3    21.9    -      -       +      -
    229A  ILE      3.5    11.9    -      -       -      +
    230A  PHE      4.7     0.2    -      -       -      -
    231A  GLY*     3.8    20.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 39 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  VAL*     3.5    21.5    -      -       +      -
     36A  ASP*     2.9    11.9    +      -       -      +
     38A  ASP*     1.3    75.6    -      -       -      +
     40A  LYS*     1.3    56.4    +      -       -      +
     42A  PHE*     3.2     4.5    +      -       -      +
     43A  TYR*     2.9    36.4    +      -       +      -
    229A  ILE*     3.1    22.6    +      -       +      +
    230A  PHE*     3.5    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 40 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  VAL*     3.9    27.4    -      -       +      +
     35A  SER*     3.4    19.1    +      -       -      +
     36A  ASP      2.9    15.8    +      -       -      +
     37A  PRO*     3.7    18.6    -      -       -      +
     38A  ASP      3.2     0.4    -      -       -      -
     39A  ALA*     1.3    76.4    -      -       -      +
     41A  LYS*     1.3    56.9    +      -       +      +
     43A  TYR*     3.4     5.7    +      -       -      +
     44A  ALA*     2.9    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 41 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  PRO*     2.9    32.7    +      -       -      +
     38A  ASP*     3.1    22.5    +      -       -      +
     40A  LYS*     1.3    78.5    -      -       -      +
     42A  PHE*     1.3    59.9    +      -       +      +
     44A  ALA*     3.2     5.7    +      -       -      +
     45A  ILE*     2.9    37.5    +      -       +      +
     99A  LEU*     4.6    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 42 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ASP*     3.3    27.3    +      -       +      -
     39A  ALA      3.2     5.4    +      -       -      +
     41A  LYS*     1.3    80.5    -      -       +      +
     43A  TYR*     1.3    58.5    +      -       -      +
     45A  ILE*     5.2     1.6    -      -       +      -
     46A  THR*     2.7    35.8    +      -       -      -
     96A  ASP*     3.4    42.0    -      -       -      +
     99A  LEU*     3.9    18.6    -      -       +      -
    100A  LEU*     3.7    35.0    -      -       +      -
    223A  LEU*     4.0    10.8    -      -       +      -
    224A  LEU*     4.3     7.6    -      -       +      -
    228A  ALA      4.7     1.8    -      -       -      -
    229A  ILE*     3.5    44.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 43 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  PHE      3.8    11.4    -      -       -      -
     30A  LYS*     2.7    42.2    +      -       +      +
     31A  GLY*     3.5    34.8    -      -       -      +
     34A  VAL*     3.7    25.2    -      -       +      +
     39A  ALA*     2.9    28.3    +      -       +      +
     40A  LYS*     3.8     6.1    -      -       -      +
     42A  PHE*     1.3    75.5    -      -       -      +
     44A  ALA*     1.3    57.8    +      -       -      +
     46A  THR*     4.7     0.4    -      -       -      -
     47A  THR*     2.7    38.4    +      -       -      +
    224A  LEU*     3.6    33.2    +      -       +      -
    229A  ILE*     3.8    20.1    -      -       +      +
    230A  PHE*     5.1     4.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 44 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  LYS      2.9    18.8    +      -       -      +
     41A  LYS*     3.5     7.2    -      -       -      +
     43A  TYR*     1.3    77.2    -      -       -      +
     45A  ILE*     1.3    64.3    +      -       +      +
     47A  THR*     4.0     2.6    -      -       -      -
     48A  LEU*     3.1    34.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 45 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LYS*     2.9    20.7    +      -       +      +
     42A  PHE*     4.0     0.4    -      -       -      +
     44A  ALA*     1.3    79.8    -      -       +      +
     46A  THR*     1.3    62.5    +      -       -      +
     48A  LEU*     3.3     7.5    +      -       -      +
     49A  VAL*     3.3    21.8    +      -       +      +
     92A  LEU*     3.2    44.6    -      -       +      +
     95A  LEU*     3.8    25.1    -      -       +      -
     96A  ASP*     3.3    27.6    -      -       -      +
     99A  LEU*     3.6    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 46 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  PHE*     3.6     7.3    -      -       +      -
     42A  PHE      2.7    22.1    +      -       -      -
     43A  TYR      4.2     0.2    -      -       -      -
     45A  ILE*     1.3    77.6    -      -       -      +
     47A  THR*     1.3    58.4    +      -       -      +
     49A  VAL*     3.7     6.3    +      -       +      +
     50A  PRO*     2.9    23.2    -      -       -      +
     93A  LEU*     6.3     1.1    -      -       +      -
     96A  ASP*     2.7    27.3    +      -       -      +
    216A  LYS      5.1     1.7    -      -       -      +
    219A  PHE*     5.3     2.2    -      -       +      -
    220A  GLY*     3.6    31.2    -      -       -      -
    223A  LEU*     3.4     9.0    -      -       +      +
    224A  LEU*     3.7    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  THR*     3.9    28.8    +      -       +      +
     27A  PHE*     3.4    25.4    +      -       +      +
     28A  LEU*     4.0    25.0    -      -       +      +
     43A  TYR*     2.7    27.4    +      -       -      +
     44A  ALA*     4.1     2.7    -      -       -      -
     46A  THR*     1.3    75.6    -      -       -      +
     48A  LEU*     1.3    65.7    +      -       -      +
     49A  VAL      3.2     0.4    -      -       -      -
     50A  PRO*     3.3    13.0    -      -       -      +
     51A  ALA*     3.3    13.5    +      -       +      +
    224A  LEU*     5.0     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  ALA*     3.1    27.4    +      -       +      +
     45A  ILE*     3.3     8.3    +      -       -      +
     47A  THR*     1.3    78.4    -      -       -      +
     49A  VAL*     1.3    56.9    +      -       -      +
     51A  ALA*     3.5     8.5    -      -       +      +
     52A  ILE*     2.9    46.5    +      -       +      +
     92A  LEU*     4.1    20.6    -      -       +      -
    311A  L2P      5.1    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  ILE*     3.3    16.8    +      -       +      +
     46A  THR*     3.9     7.4    -      -       +      +
     47A  THR      3.2     1.0    -      -       -      -
     48A  LEU*     1.3    76.7    -      -       -      +
     50A  PRO*     1.3    70.0    -      -       +      +
     52A  ILE      3.4     0.2    +      -       -      -
     53A  ALA*     3.1    18.4    +      -       -      +
     89A  THR*     3.4    23.4    -      -       -      +
     92A  LEU*     3.7    28.0    -      -       +      -
     93A  LEU*     4.2    21.8    -      -       +      +
    216A  LYS*     3.5    41.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  MET*     3.7    26.1    -      -       -      +
     24A  THR*     3.1    22.1    +      -       -      +
     27A  PHE*     3.9    22.9    -      -       +      -
     46A  THR      2.9    27.4    -      -       -      +
     47A  THR      3.3    11.4    -      -       -      +
     49A  VAL*     1.3    83.8    -      -       +      +
     51A  ALA*     1.3    57.4    +      -       -      -
     53A  ALA*     3.7     7.8    -      -       +      -
     54A  PHE*     2.7    28.1    +      -       -      +
    216A  LYS*     4.8     4.0    -      -       +      +
    217A  VAL*     4.5    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  THR*     3.1    24.5    +      -       +      -
     47A  THR*     3.3    13.6    +      -       +      +
     48A  LEU*     3.2    17.6    +      -       +      +
     50A  PRO*     1.3    75.7    -      -       -      +
     52A  ILE*     1.3    64.4    +      -       +      +
     54A  PHE*     3.3     8.4    +      -       -      +
     55A  THR*     3.2    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  LEU*     2.9    29.6    +      -       +      +
     51A  ALA*     1.3    74.3    -      -       +      +
     53A  ALA*     1.3    64.8    +      -       -      +
     55A  THR*     2.7    25.4    +      -       -      -
     56A  MET*     3.1     7.9    +      -       +      +
     85A  ASP*     4.2    18.4    -      -       -      +
     88A  PHE*     4.1     8.5    -      -       +      -
     89A  THR*     3.6    19.5    -      -       +      -
     92A  LEU*     4.0    24.2    -      -       +      -
    311A  L2P      3.4    58.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  MET*     3.8    18.4    -      -       +      -
     49A  VAL      3.1    17.6    +      -       -      +
     50A  PRO      3.8     3.4    -      -       -      +
     52A  ILE*     1.3    77.3    -      -       -      +
     54A  PHE*     1.3    56.3    +      -       -      +
     56A  MET*     3.2     1.2    +      -       -      +
     57A  TYR*     2.8    37.4    +      -       +      -
     85A  ASP*     3.4    24.5    -      -       -      +
     89A  THR*     4.4     0.2    -      -       -      +
    216A  LYS*     3.7    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  THR*     3.4    38.8    -      -       +      +
     20A  MET*     3.7    13.4    -      -       +      +
     21A  GLY*     3.7    19.1    -      -       -      +
     24A  THR*     4.6     1.6    -      -       -      +
     50A  PRO      2.7    22.2    +      -       -      +
     51A  ALA*     3.4     8.7    -      -       -      +
     52A  ILE      3.2     0.2    -      -       -      -
     53A  ALA*     1.3    74.4    -      -       -      +
     55A  THR*     1.3    76.2    +      -       +      +
     57A  TYR*     3.4     3.4    +      -       -      +
     58A  LEU*     2.9    39.8    +      -       +      +
    304A  D10      4.9     6.3    -      -       +      -
    305A  HP6      4.1    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  ALA      3.2    13.7    +      -       -      +
     52A  ILE*     2.7    22.6    +      -       -      -
     54A  PHE*     1.3    90.3    -      -       +      +
     56A  MET*     1.3    75.1    +      -       -      +
     58A  LEU*     3.4     7.9    +      -       -      +
     59A  SER*     3.0    26.5    +      -       -      -
    311A  L2P      4.4    13.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  ILE*     3.1    16.4    +      -       +      +
     53A  ALA      4.0     2.2    -      -       -      +
     55A  THR*     1.3   101.0    +      -       -      +
     57A  TYR*     1.3    64.5    +      -       -      +
     59A  SER*     2.8    34.6    +      -       -      +
     60A  MET*     3.0    17.0    +      -       +      +
     80A  TRP*     5.3     3.1    -      -       +      -
     81A  ALA*     3.8    13.7    -      -       +      +
     84A  ALA*     3.9    24.0    -      -       -      -
     85A  ASP*     3.8    35.4    -      -       +      +
    311A  L2P      3.5    35.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TRP      4.4     2.0    -      -       -      -
     13A  LEU*     3.7    35.0    -      -       +      +
     16A  GLY*     3.8    19.1    -      -       -      -
     17A  THR*     3.4    18.4    +      -       -      +
     20A  MET*     4.2    17.7    -      -       +      -
     53A  ALA      2.8    27.2    +      -       -      +
     54A  PHE      3.8     3.6    -      -       -      +
     56A  MET*     1.3    75.7    -      -       -      +
     58A  LEU*     1.3    58.8    +      -       -      +
     60A  MET*     3.1    19.9    +      -       +      +
     61A  LEU*     2.8    29.6    +      -       -      +
     82A  ARG*     3.8    11.4    +      -       -      -
     85A  ASP*     4.5     8.7    -      -       -      -
    205A  THR*     5.8     0.7    -      -       +      -
    208A  PHE      3.6     0.5    +      -       -      -
    209A  MET*     3.3    32.0    +      -       +      -
    212A  ASP*     2.6    34.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  THR*     3.6    15.4    +      -       +      -
     54A  PHE*     2.9    37.8    +      -       +      +
     55A  THR*     3.6     7.2    -      -       -      +
     57A  TYR*     1.3    76.6    -      -       -      +
     59A  SER*     1.3    57.9    +      -       -      +
     61A  LEU*     3.2    12.9    +      -       +      +
     62A  LEU*     2.9    61.9    +      -       +      +
    305A  HP6      4.0    37.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  THR      3.0    14.3    +      -       -      -
     56A  MET*     2.8    29.8    +      -       -      +
     58A  LEU*     1.3    77.5    -      -       -      +
     60A  MET*     1.3    59.1    +      -       -      +
     62A  LEU*     4.0     4.2    -      -       -      -
     63A  GLY      3.2     2.4    +      -       -      -
     64A  TYR*     2.9    46.8    +      -       -      -
     65A  GLY*     2.9     9.6    +      -       -      -
     80A  TRP*     5.7     0.6    -      -       -      -
     81A  ALA*     3.3    20.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  ARG*     2.9    21.8    +      -       -      -
     13A  LEU*     3.9    12.6    -      -       +      -
     56A  MET*     3.0    22.9    +      -       +      +
     57A  TYR*     3.1    35.4    +      -       +      +
     59A  SER*     1.3    76.4    +      -       -      +
     61A  LEU*     1.3    65.3    +      -       -      +
     63A  GLY*     3.1     7.1    +      -       -      -
     65A  GLY      4.2     3.6    -      -       -      +
     79A  TYR*     3.6    47.4    -      -       +      -
     81A  ALA*     3.7    14.6    -      -       +      -
     82A  ARG*     3.8    43.5    -      -       +      +
     85A  ASP*     5.9     0.9    -      -       -      +
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Residues in contact with LEU 61 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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      4A  ILE*     3.5    28.6    -      -       +      +
      7A  ARG*     2.8    21.5    +      -       -      +
     10A  TRP*     3.7    28.3    -      -       +      +
     13A  LEU*     4.0    12.9    -      -       +      +
     14A  ALA*     3.9    17.9    -      -       +      +
     17A  THR*     4.3     5.6    -      -       -      +
     57A  TYR      2.8    12.9    +      -       -      +
     58A  LEU*     3.2    24.4    +      -       +      +
     60A  MET*     1.3    77.4    -      -       -      +
     62A  LEU*     1.3    64.6    +      -       +      +
    304A  D10      4.2    29.8    -      -       +      -
    305A  HP6      4.9     4.7    -      -       +      -
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Residues in contact with LEU 62 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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      4A  ILE*     4.3    22.2    -      -       +      +
      7A  ARG*     4.0     2.9    +      -       -      -
     58A  LEU*     2.9    45.5    +      -       +      +
     59A  SER*     4.4     4.5    -      -       -      +
     61A  LEU*     1.3    81.0    -      -       +      +
     63A  GLY*     1.3    59.9    +      -       -      +
     64A  TYR*     3.4     5.6    +      -       +      +
    305A  HP6      4.2    28.9    -      -       +      -
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   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