Contacts of the helix formed by residues 41 - 69 (chain A) in PDB entry 6H7L


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 ALA 41 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ALA*     1.3    74.7    -      -       -      +
     42A  LYS*     1.3    61.3    +      -       -      +
     44A  MET*     3.7    28.7    -      -       +      +
     45A  SER*     3.2    23.4    +      -       -      -
    109E  GLU      3.1    19.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 42 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ALA      4.4     1.6    -      -       -      +
     41A  ALA*     1.3    77.6    -      -       -      +
     43A  VAL*     1.3    62.4    +      -       +      +
     45A  SER*     2.9    20.0    +      -       -      -
     46A  LEU*     3.4    11.4    +      -       -      +
    108E  ALA      3.6    20.3    +      -       -      +
    109E  GLU*     3.2    31.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 43 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ALA*     3.3    23.8    +      -       -      +
     42A  LYS*     1.3    75.1    -      -       +      +
     44A  MET*     1.3    59.8    +      -       -      +
     46A  LEU*     3.3    15.4    +      -       +      +
     47A  LEU*     3.0    42.5    +      -       +      +
    108E  ALA*     6.0     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 44 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ALA      2.8    20.5    +      -       -      +
     41A  ALA*     3.7    27.4    -      -       +      +
     43A  VAL*     1.3    73.6    -      -       -      +
     45A  SER*     1.3    61.7    +      -       -      +
     47A  LEU*     3.4    10.8    +      -       -      +
     48A  MET*     3.3    35.2    +      -       +      +
    102A  VAL*     3.8    28.9    -      -       +      +
    103A  VAL*     6.2     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 45 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  ALA      3.2    13.2    +      -       -      -
     42A  LYS*     2.9    20.1    +      -       -      -
     44A  MET*     1.3    75.9    -      -       -      +
     46A  LEU*     1.3    63.3    +      -       -      +
     48A  MET*     3.3    14.0    +      -       -      +
     49A  ALA*     3.3    20.3    +      -       -      +
    103A  VAL*     5.0    15.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 46 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  LYS      3.4     9.1    +      -       -      +
     43A  VAL*     3.3    19.0    +      -       +      +
     45A  SER*     1.3    81.1    +      -       -      +
     47A  LEU*     1.3    64.8    +      -       +      +
     49A  ALA*     3.4    11.2    +      -       +      +
     50A  LEU*     3.3    27.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  VAL*     3.0    30.4    +      -       +      +
     44A  MET*     3.5    10.8    -      -       -      +
     45A  SER      3.2     0.2    -      -       -      -
     46A  LEU*     1.3    78.3    -      -       +      +
     48A  MET*     1.3    62.3    +      -       +      +
     50A  LEU*     3.6    23.6    -      -       +      +
     51A  VAL*     3.2    31.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  MET*     3.3    30.7    +      -       +      +
     45A  SER*     3.3    12.5    +      -       -      +
     47A  LEU*     1.3    73.9    -      -       -      +
     49A  ALA*     1.3    65.8    +      -       -      +
     51A  VAL*     3.3     3.2    +      -       -      +
     52A  VAL*     3.1    28.5    +      -       +      +
     99A  ALA*     3.7    35.9    -      -       +      +
    102A  VAL*     3.5    41.3    -      -       +      -
    103A  VAL*     4.9     6.3    -      -       +      -
    330A  TRP*     3.5    36.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  SER      3.3    10.6    +      -       -      +
     46A  LEU*     3.5    16.2    -      -       +      +
     47A  LEU      3.4     0.4    -      -       -      -
     48A  MET*     1.3    80.3    -      -       -      +
     50A  LEU*     1.3    58.1    +      -       -      +
     52A  VAL*     3.5     5.9    +      -       -      +
     53A  LEU*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     46A  LEU*     3.3    19.0    +      -       +      +
     47A  LEU*     3.6    31.6    -      -       +      +
     49A  ALA*     1.3    76.0    -      -       -      +
     51A  VAL*     1.3    67.4    +      -       +      +
     53A  LEU*     3.1    12.1    +      -       +      +
     54A  LEU*     2.8    61.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LEU*     3.2    18.7    +      -       +      +
     48A  MET*     3.3    12.0    +      -       -      +
     50A  LEU*     1.3    86.5    -      -       +      +
     52A  VAL*     1.3    64.1    +      -       -      +
     54A  LEU*     3.4     6.8    +      -       +      +
     55A  ILE*     3.0    45.8    +      -       +      +
     95A  VAL*     4.5    13.2    -      -       +      -
    330A  TRP*     4.5    14.1    -      -       +      +
    333A  TYR*     4.8    11.2    -      -       +      +
    334A  ALA*     5.0    12.8    -      -       +      -
    337A  ALA*     4.6     2.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  MET*     3.1    13.7    +      -       +      +
     49A  ALA*     3.8     7.9    -      -       -      +
     51A  VAL*     1.3    74.9    -      -       -      +
     53A  LEU*     1.3    64.0    +      -       -      +
     55A  ILE*     3.3     6.1    +      -       -      +
     56A  VAL*     3.0    31.9    +      -       +      +
     91A  GLY      3.6    21.3    -      -       -      +
     95A  VAL*     3.5    33.0    -      -       +      -
     96A  PRO*     4.5    13.9    -      -       +      -
     99A  ALA*     5.8     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  ALA      3.0    15.0    +      -       -      +
     50A  LEU*     3.1    15.0    +      -       +      +
     52A  VAL*     1.3    79.0    -      -       -      +
     54A  LEU*     1.3    62.3    +      -       +      +
     56A  VAL*     4.1     2.5    -      -       -      +
     57A  ALA*     2.9    40.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  LEU*     2.8    47.3    +      -       +      +
     51A  VAL*     3.7     5.8    -      -       +      +
     53A  LEU*     1.3    76.4    -      -       +      +
     55A  ILE*     1.3    66.3    +      -       -      +
     57A  ALA*     4.6     3.1    -      -       +      -
     58A  GLY*     2.9    23.2    +      -       -      -
     59A  ASN*     5.3     0.2    +      -       -      -
    337A  ALA*     3.9    23.5    -      -       +      +
    340A  PRO*     5.7     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  VAL*     3.0    34.8    +      -       +      +
     52A  VAL*     3.8     4.7    -      -       -      +
     54A  LEU*     1.3    75.5    -      -       -      +
     56A  VAL*     1.3    64.4    +      -       -      +
     59A  ASN*     3.0    41.9    +      -       -      +
     87A  ASP      3.1    28.0    -      -       -      +
     88A  LEU*     4.6     0.9    -      -       -      -
     90A  VAL*     4.4    11.4    -      -       +      -
     91A  GLY*     3.6    15.3    -      -       -      -
     95A  VAL*     4.4     9.0    -      -       +      -
    333A  TYR      3.5    21.5    -      -       -      +
    336A  SER*     4.1     6.1    -      -       -      -
    337A  ALA*     3.6    24.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  VAL*     3.0    26.8    +      -       +      +
     53A  LEU*     4.4     2.0    -      -       -      +
     55A  ILE*     1.3    72.6    -      -       -      +
     57A  ALA*     1.3    68.6    +      -       -      +
     60A  VAL*     2.9    44.9    +      -       +      +
     88A  LEU*     4.0     7.6    -      -       +      +
     91A  GLY*     3.9    22.2    -      -       -      +
     92A  LEU*     3.8    33.7    -      -       +      +
----------------------------------------------------------
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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  LEU*     2.9    26.7    +      -       +      +
     54A  LEU*     4.0     3.4    -      -       -      +
     56A  VAL*     1.3    78.6    -      -       -      +
     58A  GLY*     1.3    64.7    +      -       -      +
     60A  VAL*     3.7     4.3    -      -       -      +
     61A  LEU*     3.0    29.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LEU      2.9    16.9    +      -       -      -
     57A  ALA*     1.3    75.7    -      -       -      +
     59A  ASN*     1.3    56.8    +      -       -      +
     61A  LEU*     3.0    26.2    +      -       -      +
     62A  VAL*     3.0    15.1    +      -       -      +
    337A  ALA      6.0     0.2    -      -       -      -
    340A  PRO*     4.0    18.8    -      -       -      -
    341A  ILE*     6.4     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ILE*     3.0    31.4    +      -       -      +
     56A  VAL      4.5     0.4    -      -       -      +
     58A  GLY*     1.3    73.6    -      -       -      +
     60A  VAL*     1.3    61.5    +      -       -      +
     62A  VAL*     3.4     5.2    +      -       -      +
     63A  ILE*     3.1    30.7    +      -       -      +
     84A  ALA*     3.5    32.4    -      -       -      +
     87A  ASP*     3.2    23.2    -      -       -      +
     88A  LEU*     4.1    10.5    -      -       +      -
    336A  SER      3.1    24.0    +      -       -      -
    340A  PRO*     3.4    19.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  VAL*     2.9    35.4    +      -       +      +
     57A  ALA*     3.7     3.8    -      -       -      +
     59A  ASN*     1.3    76.4    -      -       -      +
     61A  LEU*     1.3    61.2    +      -       +      +
     63A  ILE*     3.6     6.7    +      -       -      +
     64A  ALA*     3.0    32.1    +      -       +      +
     88A  LEU*     3.7    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  ALA*     3.0    16.7    +      -       +      +
     58A  GLY*     3.0    13.2    +      -       -      +
     60A  VAL*     1.3    81.6    -      -       +      +
     62A  VAL*     1.3    55.3    +      -       -      +
     64A  ALA*     4.3     2.7    -      -       +      -
     65A  ALA*     3.0    29.3    +      -       -      +
    353A  PHE*     3.5    28.8    -      -       +      -
    356A  LEU*     3.5    17.6    -      -       +      +
    357A  LEU*     4.0    43.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  GLY      3.0    13.8    +      -       -      +
     59A  ASN*     3.6     8.3    -      -       -      +
     60A  VAL      3.3     0.2    -      -       -      -
     61A  LEU*     1.3    74.1    -      -       -      +
     63A  ILE*     1.3    67.0    +      -       -      +
     65A  ALA*     3.1     3.3    +      -       -      +
     66A  ILE*     3.0    44.7    +      -       +      +
     80A  ILE*     4.2     4.5    -      -       +      -
     84A  ALA*     4.1    16.6    -      -       +      -
    340A  PRO*     3.9    20.0    -      -       +      -
    344A  CYS*     3.7    32.5    -      -       -      -
    349A  PHE*     4.2     1.8    -      -       +      -
    353A  PHE*     4.0    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ASN      3.1    17.7    +      -       -      +
     60A  VAL*     4.1     3.6    -      -       -      +
     62A  VAL*     1.3    79.5    -      -       -      +
     64A  ALA*     1.3    57.2    +      -       -      +
     66A  ILE*     3.9     6.3    -      -       -      +
     67A  GLY*     2.9    28.3    +      -       -      -
     81A  THR*     4.8    18.2    -      -       +      -
     84A  ALA*     3.7    31.0    -      -       +      +
     85A  CYS*     4.1    13.0    -      -       -      +
     88A  LEU*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  VAL*     3.0    23.9    +      -       +      +
     61A  LEU*     3.6     2.9    -      -       +      +
     63A  ILE*     1.3    78.3    -      -       -      +
     65A  ALA*     1.3    55.5    +      -       -      +
     67A  GLY*     5.2     0.2    -      -       -      -
     68A  SER*     2.6    37.4    +      -       -      -
    356A  LEU*     3.6    21.8    -      -       +      -
----------------------------------------------------------
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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  LEU      3.0    18.8    +      -       -      +
     62A  VAL      3.1     4.9    +      -       -      +
     64A  ALA*     1.3    74.4    -      -       -      +
     66A  ILE*     1.3    63.2    +      -       -      +
     68A  SER*     3.2     5.0    +      -       -      -
     69A  THR*     3.0    31.0    +      -       -      -
     72A  LEU*     3.5    17.7    -      -       +      -
    349A  PHE*     4.1     3.8    -      -       +      -
    352A  ALA*     3.8    14.8    -      -       +      -
    353A  PHE*     3.9    15.5    -      -       +      -
    356A  LEU*     3.5     8.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  VAL*     3.0    40.5    +      -       +      +
     63A  ILE*     3.9     4.7    -      -       -      +
     65A  ALA*     1.3    74.8    -      -       -      +
     67A  GLY*     1.3    64.9    +      -       -      +
     69A  THR      3.3    18.2    -      -       -      +
     72A  LEU*     4.0    23.1    -      -       +      +
     73A  GLN*     3.3    17.7    -      -       +      +
     77A  ASN*     3.9    14.1    -      -       +      +
     78A  LEU*     6.5     0.9    -      -       +      -
     80A  ILE*     4.4     2.7    -      -       +      -
     81A  THR*     3.5    37.7    -      -       +      +
    349A  PHE*     3.6    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  ILE*     2.9    17.5    +      -       -      -
     64A  ALA      3.8     0.7    -      -       -      -
     66A  ILE*     1.3    78.8    -      -       -      +
     68A  SER*     1.3    57.3    +      -       -      +
     73A  GLN*     3.4    15.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  ALA      2.6    24.5    +      -       -      -
     65A  ALA*     3.2     5.2    +      -       -      -
     67A  GLY*     1.3    77.1    -      -       -      +
     69A  THR*     1.3    59.4    +      -       -      +
     70A  GLN      4.0     1.7    +      -       -      -
     73A  GLN*     4.8     0.7    -      -       -      -
    355A  ARG*     2.9    34.6    +      -       -      -
    356A  LEU*     3.8     7.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  ALA      3.0    15.8    +      -       -      -
     66A  ILE      3.3    13.0    -      -       -      +
     67A  GLY      3.6     0.2    -      -       -      -
     68A  SER*     1.3    76.6    -      -       -      +
     70A  GLN*     1.3    64.5    +      -       -      +
     71A  ARG*     3.7    22.7    -      -       +      +
     72A  LEU*     3.1    26.5    +      -       +      +
     73A  GLN*     3.5     7.0    -      -       -      +
    348A  ASP*     5.5     2.2    -      -       +      +
    352A  ALA*     3.7    11.4    -      -       +      +
    355A  ARG*     2.7    31.0    +      -       -      +
----------------------------------------------------------
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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) +   -    +    +   +   +    +    -
------------------------------------------------------------
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