Contacts of the helix formed by residues 87 - 113 (chain A) in PDB entry 1WD5


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 87 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  LEU*     4.4     1.8    -      -       -      -
     86A  ALA*     1.3    76.1    -      -       -      +
     88A  GLN*     1.3    63.7    -      -       -      +
     89A  SER*     2.3    40.6    +      -       -      -
     90A  TYR*     3.3    23.0    +      -       -      +
     91A  LEU*     3.3    14.4    +      -       -      +
     93A  ARG*     4.9     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  LEU*     4.6     2.4    -      -       -      +
     78A  LEU*     4.3    17.4    -      -       -      +
     83A  LEU*     3.7    26.9    -      -       +      +
     87A  ASP*     1.3    73.4    +      -       -      +
     89A  SER*     1.3    63.2    +      -       -      +
     91A  LEU*     3.2    16.0    +      -       -      +
     92A  GLU*     2.7    54.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  ASP*     2.3    28.4    +      -       -      -
     88A  GLN*     1.3    75.5    -      -       -      +
     90A  TYR*     1.3    62.5    +      -       -      +
     92A  GLU*     3.2     9.0    +      -       -      +
     93A  ARG*     3.0    44.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  GLY      2.8    28.7    +      -       -      -
     59A  ALA*     3.3    11.8    +      -       -      -
     60A  PRO*     3.6    34.7    -      -       +      +
     61A  GLY      5.0     0.3    +      -       -      -
     67A  LEU*     4.7     0.2    -      -       +      -
     86A  ALA*     3.7    19.3    -      -       +      -
     87A  ASP*     3.2    21.6    +      -       -      +
     88A  GLN      3.2     0.4    -      -       -      -
     89A  SER*     1.3    80.9    +      -       -      +
     91A  LEU*     1.3    70.7    +      -       +      +
     93A  ARG*     2.9    30.3    +      -       -      +
     94A  GLU*     2.8    49.9    +      -       +      -
     97A  ARG*     4.1    16.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL*     4.6    10.7    -      -       +      +
     67A  LEU*     4.0    36.1    -      -       +      -
     76A  LEU*     4.4     3.4    -      -       +      +
     78A  LEU*     3.9    36.1    -      -       +      -
     82A  ALA*     4.2     9.4    -      -       +      -
     83A  LEU*     3.8    29.2    -      -       +      -
     86A  ALA*     4.3     3.8    -      -       +      +
     87A  ASP      3.3    10.1    +      -       -      +
     88A  GLN*     3.2    16.1    +      -       -      +
     90A  TYR*     1.3    89.2    -      -       +      +
     92A  GLU*     1.3    58.1    +      -       -      +
     94A  GLU*     4.0     2.3    -      -       -      +
     95A  ALA*     2.9    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  LEU*     3.8    16.5    -      -       -      +
     88A  GLN*     2.7    48.2    +      -       +      +
     89A  SER*     3.6    10.8    -      -       -      +
     91A  LEU*     1.3    75.8    -      -       -      +
     93A  ARG*     1.3    64.2    +      -       +      +
     95A  ALA*     3.6     4.2    +      -       -      +
     96A  ALA*     3.1    22.5    +      -       -      +
     99A  ARG*     4.7    11.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  ASP*     4.9     2.0    +      -       -      -
     89A  SER*     3.0    42.8    +      -       -      +
     90A  TYR*     2.9    38.2    +      -       +      +
     92A  GLU*     1.3    75.0    -      -       +      +
     94A  GLU*     1.3    66.0    +      -       -      +
     96A  ALA*     3.2     8.7    +      -       -      +
     97A  ARG*     3.2    41.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL*     3.3    28.9    -      -       +      -
     58A  GLY*     3.0    25.5    +      -       -      +
     63A  PRO*     5.9     1.6    -      -       -      +
     90A  TYR*     2.8    37.1    +      -       +      +
     91A  LEU      4.0     3.1    -      -       -      +
     93A  ARG*     1.3    72.7    -      -       -      +
     95A  ALA*     1.3    63.8    +      -       -      +
     97A  ARG*     2.7    46.1    +      -       -      +
     98A  GLN*     3.1    47.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL*     4.4     5.4    -      -       -      +
     70A  VAL*     3.9    22.9    -      -       +      +
     76A  LEU*     4.0    18.4    -      -       +      -
     91A  LEU      2.9    19.1    +      -       -      +
     92A  GLU*     3.7     6.7    -      -       -      +
     93A  ARG      3.3     0.2    -      -       -      -
     94A  GLU*     1.3    77.9    -      -       -      +
     96A  ALA*     1.3    56.3    +      -       -      +
     98A  GLN*     3.2     3.3    +      -       -      +
     99A  ARG*     2.9    48.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  GLU      3.1    11.9    +      -       -      +
     93A  ARG*     3.5    10.8    -      -       -      +
     94A  GLU      3.2     0.2    -      -       -      -
     95A  ALA*     1.3    79.4    -      -       -      +
     97A  ARG*     1.3    61.6    +      -       +      +
     99A  ARG*     3.3    18.7    +      -       -      +
    100A  ASP*     3.1    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  TYR*     4.1    16.2    +      -       -      -
     93A  ARG*     3.2    29.9    +      -       -      +
     94A  GLU*     2.7    46.7    +      -       -      +
     96A  ALA*     1.3    77.1    -      -       +      +
     98A  GLN*     1.3    67.8    +      -       -      +
    100A  ASP*     3.4    20.4    +      -       -      +
    101A  VAL*     3.4    17.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ARG*     2.8    66.6    +      -       +      +
     56A  LYS      3.3    24.2    +      -       -      +
     57A  VAL*     4.5     2.7    -      -       +      -
     70A  VAL*     3.9     9.4    -      -       +      -
     94A  GLU*     3.1    42.4    +      -       +      +
     95A  ALA*     3.2     7.2    +      -       -      +
     97A  ARG*     1.3    78.1    -      -       -      +
     99A  ARG*     1.3    65.3    +      -       -      +
    101A  VAL*     3.2    13.1    +      -       -      +
    102A  LEU*     3.3     9.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  VAL*     4.5    14.5    -      -       +      +
     71A  GLY      5.7     0.9    -      -       -      +
     74A  GLY*     2.9    41.0    +      -       -      -
     76A  LEU*     4.1    20.4    -      -       -      +
     92A  GLU*     4.7    10.7    +      -       -      -
     95A  ALA*     2.9    30.4    +      -       -      +
     96A  ALA*     3.3    32.6    +      -       -      +
     98A  GLN*     1.3    77.2    -      -       -      +
    100A  ASP*     1.3    58.8    +      -       -      +
    102A  LEU*     3.2     7.8    +      -       -      +
    103A  ARG*     2.9    42.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  ALA*     3.1    17.3    +      -       -      +
     97A  ARG*     3.5    14.4    -      -       -      +
     98A  GLN      3.2     0.6    -      -       -      -
     99A  ARG*     1.3    79.5    -      -       -      +
    101A  VAL*     1.3    63.9    +      -       +      +
    102A  LEU      3.3     0.3    +      -       -      -
    103A  ARG*     2.4    49.1    +      -       -      +
    104A  LYS*     4.7     4.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ARG*     3.7    32.5    -      -       -      +
     97A  ARG      3.4    15.5    -      -       -      +
     98A  GLN*     3.2    17.6    +      -       -      +
    100A  ASP*     1.3    76.5    -      -       +      +
    102A  LEU*     1.3    58.7    +      -       -      +
    104A  LYS      5.3     0.2    +      -       -      -
    105A  ARG*     4.3    18.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  LEU*     3.8    28.3    -      -       +      +
     54A  VAL*     3.8    31.2    -      -       -      +
     55A  ARG*     3.9     9.6    -      -       +      -
     70A  VAL*     4.3     8.1    -      -       +      +
     71A  GLY      3.8     7.9    -      -       -      +
     72A  GLU*     3.7    33.9    -      -       -      +
     98A  GLN      3.3    11.4    +      -       -      +
     99A  ARG*     3.2     6.2    +      -       -      +
    100A  ASP      3.2     0.4    -      -       -      -
    101A  VAL*     1.3    82.4    -      -       -      +
    103A  ARG*     1.3    63.5    +      -       -      +
    104A  LYS      3.6     1.1    -      -       -      -
    105A  ARG*     3.5     8.8    +      -       +      +
    106A  ALA*     3.1    22.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  ARG*     2.9    28.0    +      -       -      +
    100A  ASP*     2.4    44.7    +      -       -      +
    102A  LEU*     1.3    77.2    -      -       -      +
    104A  LYS*     1.3    69.6    +      -       +      +
    106A  ALA*     3.3     4.7    +      -       -      +
    107A  GLU*     3.0    47.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  ASP      4.7     4.6    +      -       -      +
    101A  VAL      5.3     0.4    +      -       -      -
    102A  LEU      3.6     0.6    -      -       -      -
    103A  ARG*     1.3    84.0    -      -       +      +
    105A  ARG*     1.3    64.2    +      -       -      +
    107A  GLU*     3.2    15.8    +      -       -      +
    108A  ARG*     3.2    37.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  PRO*     4.9     9.6    -      -       -      -
     32A  ARG*     4.1    15.2    -      -       -      +
     53A  LEU*     4.7     7.2    -      -       +      -
    101A  VAL*     4.3    15.5    +      -       -      +
    102A  LEU*     3.5    11.6    +      -       +      +
    103A  ARG      3.3     0.6    -      -       -      -
    104A  LYS*     1.3    77.0    -      -       -      +
    106A  ALA*     1.3    63.9    +      -       -      +
    108A  ARG*     3.1    32.5    -      -       -      +
    109A  TYR*     3.1    55.2    +      -       +      -
    196A  ASP*     2.8    35.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  LEU*     3.9    27.3    -      -       +      +
     72A  GLU*     4.4    19.3    -      -       +      +
    102A  LEU*     3.1    23.8    +      -       +      +
    103A  ARG*     3.7     4.9    -      -       -      +
    104A  LYS      3.3     0.2    -      -       -      -
    105A  ARG*     1.3    78.3    -      -       -      +
    107A  GLU*     1.3    56.5    -      -       +      +
    109A  TYR*     3.5     0.5    +      -       -      +
    110A  ARG*     2.9    37.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  ARG*     3.0    37.4    +      -       +      +
    104A  LYS*     3.2    14.4    +      -       -      +
    106A  ALA*     1.3    77.2    -      -       +      +
    108A  ARG*     1.3    62.0    +      -       -      +
    110A  ARG*     3.5     4.9    +      -       -      +
    111A  ARG*     3.1    42.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  LYS*     3.2    18.1    +      -       -      +
    105A  ARG*     3.1    69.5    -      -       -      +
    107A  GLU*     1.3    76.2    -      -       -      +
    109A  TYR*     1.3    74.7    +      -       +      +
    111A  ARG*     3.4    27.5    +      -       -      +
    112A  VAL*     3.7    12.5    +      -       -      +
    196A  ASP*     3.6    16.7    +      -       -      -
    200A  GLU*     4.0    22.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  PRO*     4.4    10.3    -      -       +      -
     32A  ARG*     3.8    10.0    -      -       -      +
     51A  VAL*     4.1    13.5    -      -       +      -
     53A  LEU*     3.8    30.7    -      -       +      -
    105A  ARG*     3.1    39.0    +      -       +      +
    106A  ALA      4.0     3.1    -      -       -      +
    108A  ARG*     1.3    82.5    -      -       +      +
    110A  ARG*     1.3    59.5    +      -       +      +
    112A  VAL*     3.0    10.8    -      -       -      +
    113A  ARG*     3.0    25.7    +      -       -      +
    196A  ASP*     2.6    43.6    +      -       +      -
    199A  VAL*     3.6    30.2    -      -       +      +
    200A  GLU*     4.1    12.1    -      -       +      -
    203A  LEU*     3.7    19.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  ASP*     2.9    27.9    +      -       -      -
     51A  VAL*     3.2    29.9    +      -       -      +
     53A  LEU*     3.9     7.8    -      -       +      +
     72A  GLU*     2.7    44.0    +      -       -      +
    106A  ALA*     2.9    23.9    +      -       +      +
    107A  GLU*     4.0     4.5    -      -       -      +
    109A  TYR*     1.3    74.6    +      -       -      +
    111A  ARG*     1.3    63.5    +      -       -      +
    112A  VAL      3.2     0.6    +      -       -      -
    113A  ARG*     3.1    34.0    +      -       -      +
    114A  PRO*     3.6     8.3    -      -       +      +
    115A  LYS*     3.5    29.5    -      -       -      +
    118A  ARG*     4.0     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  GLU*     3.1    35.9    +      -       -      +
    108A  ARG*     3.5    21.8    -      -       -      +
    109A  TYR      3.1     0.6    -      -       -      -
    110A  ARG*     1.3    79.3    -      -       -      +
    112A  VAL*     1.3    64.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  ARG      3.9     9.4    -      -       -      +
    109A  TYR*     3.0    20.4    -      -       -      +
    111A  ARG*     1.3    87.7    -      -       +      +
    113A  ARG*     1.3    58.2    +      -       -      +
    114A  PRO*     4.6     1.3    -      -       -      -
    200A  GLU*     4.1    27.1    -      -       +      +
    203A  LEU*     3.9    22.7    -      -       +      -
    204A  LEU*     3.4    38.9    -      -       +      +
    207A  ALA*     3.2    20.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  GLU*     3.1    33.7    +      -       -      +
     49A  LEU      2.8    30.6    +      -       -      -
     50A  ASP*     3.6    17.6    +      -       -      +
    109A  TYR      3.0    11.6    +      -       -      +
    110A  ARG*     3.1    21.6    +      -       -      +
    111A  ARG      3.6     0.8    -      -       -      -
    112A  VAL*     1.3    81.4    -      -       -      +
    114A  PRO*     1.3   101.8    +      -       +      +
    116A  ALA*     3.7    19.5    -      -       -      +
    203A  LEU*     3.4    43.3    -      -       +      +
    206A  TRP*     3.8    24.5    +      -       -      +
    207A  ALA*     4.3     3.3    -      -       +      +
----------------------------------------------------------
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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