Contacts of the helix formed by residues 90 - 115 (chain A) in PDB entry 4KNF


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 PRO 90 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PHE*     4.2     7.9    -      -       +      -
     79A  MET*     3.5    42.6    -      -       +      +
     82A  VAL*     3.8    23.6    -      -       +      -
     83A  TRP*     4.8     2.9    -      -       +      +
     88A  ASP      3.3     6.7    -      -       -      +
     89A  THR*     1.4    78.2    -      -       -      +
     91A  THR*     1.3    59.3    +      -       -      +
     92A  VAL      3.4     2.0    +      -       -      -
     93A  PHE*     3.5     2.2    +      -       +      -
     94A  ARG*     2.9    30.2    +      -       -      +
    221A  ASN*     3.7    22.0    -      -       -      +
     22E  ASP*     3.6    15.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  THR*     2.9    26.4    +      -       -      +
     90A  PRO*     1.3    71.8    -      -       -      +
     92A  VAL*     1.3    60.8    +      -       +      +
     94A  ARG*     3.2     8.6    +      -       -      +
     95A  TYR*     2.9    46.2    +      -       +      -
    139A  PHE*     4.2    13.5    -      -       +      -
    142A  GLU*     3.7    39.7    +      -       +      +
    143A  ALA*     4.6     2.7    -      -       +      +
    208A  TYR*     4.5     5.7    +      -       -      -
     22E  ASP*     3.2     5.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  THR*     1.3    73.1    -      -       +      +
     93A  PHE*     1.3    52.6    +      -       -      +
     95A  TYR*     3.3     1.0    +      -       -      +
     96A  ILE*     2.7    51.8    +      -       +      +
    139A  PHE*     4.2    17.9    -      -       +      -
    143A  ALA*     6.1     0.9    -      -       +      -
     22E  ASP*     2.8    25.2    +      -       -      +
     23E  LEU*     3.4    41.1    -      -       +      +
     25E  ILE*     4.0    37.5    -      -       +      +
     31E  VAL*     4.9     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  HIS*     4.0    13.4    -      +       +      +
     78A  TYR*     3.7    39.5    -      +       +      -
     79A  MET*     3.6    21.5    -      -       +      +
     82A  VAL*     3.9    16.8    -      -       +      -
     90A  PRO*     3.8     2.9    -      -       +      +
     91A  THR      3.4     0.2    -      -       -      -
     92A  VAL*     1.3    75.5    -      -       -      +
     94A  ARG*     1.3    56.4    +      -       -      +
     96A  ILE*     3.8     2.9    -      -       +      +
     97A  ASN*     2.9    31.7    +      -       -      +
     21E  GLY      3.8    14.1    -      -       -      -
     22E  ASP*     3.1    22.3    +      -       -      +
     23E  LEU*     3.6    39.5    -      -       +      -
     34E  TRP*     3.6    37.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with ARG 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PHE*     3.5    12.3    -      -       -      -
     76A  TYR*     3.1    21.8    +      -       -      -
     79A  MET*     3.5    20.9    -      -       -      -
     90A  PRO*     2.9    15.9    +      -       -      +
     91A  THR*     3.2    13.0    +      -       -      +
     93A  PHE*     1.3    76.1    -      -       -      +
     95A  TYR*     1.3    59.9    +      -       +      +
     97A  ASN*     3.4     4.7    -      -       -      +
     98A  TRP*     3.0    69.7    +      -       +      +
    221A  ASN*     2.8    33.7    +      -       -      -
    224A  TYR*     3.5    25.0    -      -       +      +
    225A  ASN*     3.0    29.7    +      -       -      -
    228A  ASP*     3.3     7.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  THR*     2.9    31.6    +      -       +      +
     92A  VAL      4.2     1.6    -      -       -      +
     94A  ARG*     1.3    74.3    -      -       +      +
     96A  ILE*     1.3    58.8    +      -       +      +
     98A  TRP*     3.6    31.1    -      +       -      +
     99A  LEU*     2.8    36.2    +      -       -      +
    135A  LEU*     3.4    41.0    -      -       +      +
    138A  GLY*     3.2    17.7    -      -       -      -
    139A  PHE*     3.4    40.6    -      +       +      -
    142A  GLU*     2.5    38.5    +      -       +      -
    224A  TYR*     5.4     0.2    -      +       -      -
    301A  RET      3.6    12.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  HIS*     3.5     7.2    -      -       -      +
     92A  VAL*     2.7    44.6    +      -       +      +
     93A  PHE*     3.8     5.6    -      -       -      +
     95A  TYR*     1.3    71.7    -      -       -      +
     97A  ASN*     1.3    63.5    +      -       -      +
     99A  LEU*     3.2    13.9    +      -       +      +
    100A  LEU*     2.9    29.2    +      -       +      +
     23E  LEU*     4.1    11.9    -      -       +      -
     25E  ILE*     5.4     3.8    -      -       +      -
     31E  VAL*     3.9    27.4    -      -       +      -
     34E  TRP*     3.3    34.8    -      -       +      +
     35E  LEU*     4.0    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ILE*     3.5     4.7    -      -       -      +
     72A  ALA*     3.4    33.6    +      -       -      +
     75A  HIS*     3.3    38.3    +      -       +      +
     76A  TYR*     4.4     5.5    -      -       -      -
     79A  MET*     4.2    13.1    -      -       +      +
     93A  PHE      2.9    19.0    +      -       -      +
     94A  ARG*     3.4     6.2    +      -       -      +
     96A  ILE*     1.3    75.6    -      -       -      +
     98A  TRP*     1.3    61.1    +      -       -      +
    100A  LEU*     3.0     5.4    +      -       -      +
    101A  THR*     2.8    32.3    +      -       -      +
    228A  ASP*     4.6     4.9    +      -       -      -
    232A  LYS*     4.5     9.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  ARG*     3.0    40.6    +      -       +      +
     95A  TYR*     3.4    49.1    +      +       -      +
     97A  ASN*     1.3    78.6    -      -       -      +
     99A  LEU*     1.3    57.9    +      -       -      +
    101A  THR*     3.6     3.1    -      -       -      -
    102A  VAL*     2.9    38.5    +      -       +      +
    135A  LEU*     3.6    23.1    -      -       +      +
    200A  TYR*     3.4    28.7    -      +       -      -
    224A  TYR*     3.6    38.1    -      +       +      -
    228A  ASP*     2.9    25.2    +      -       -      -
    232A  LYS*     4.0     3.4    -      -       -      -
    301A  RET      3.4    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  TYR      2.8    23.0    +      -       -      +
     96A  ILE*     3.3    14.1    -      -       +      +
     98A  TRP*     1.3    74.0    -      -       -      +
    100A  LEU*     1.3    56.6    +      -       +      +
    103A  PRO*     3.0    27.3    -      -       +      +
    132A  LEU*     3.8    29.8    -      -       +      -
    135A  LEU*     3.7    11.5    -      -       +      +
     35E  LEU*     4.4    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ILE*     4.0    17.6    -      -       +      +
     75A  HIS*     3.4    34.5    -      -       +      +
     96A  ILE*     2.9    27.6    +      -       +      +
     97A  ASN*     3.7     4.5    -      -       -      +
     99A  LEU*     1.3    79.2    -      -       +      +
    101A  THR*     1.3    60.9    +      -       -      +
    103A  PRO*     3.9     6.6    -      -       -      +
    104A  LEU*     3.8    18.8    +      -       -      +
     34E  TRP*     4.7     1.3    -      -       +      +
     35E  LEU*     3.6    38.4    -      -       +      +
     38E  ALA*     3.9    17.0    -      -       +      -
     39E  GLY*     4.9     6.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  ILE*     3.6    41.9    -      -       +      +
     71A  ILE*     4.2    13.7    -      -       +      -
     97A  ASN*     2.8    31.0    +      -       -      +
     98A  TRP*     3.6     4.3    -      -       -      -
    100A  LEU*     1.3    73.5    -      -       -      +
    102A  VAL*     1.3    66.9    +      -       -      +
    103A  PRO      3.2     2.5    -      -       -      -
    104A  LEU*     2.9     9.0    +      -       -      +
    105A  LEU*     2.9    21.6    +      -       -      +
    232A  LYS*     3.1    31.1    +      -       -      -
    301A  RET      3.4     2.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  TRP*     2.9    29.8    +      -       +      +
    101A  THR*     1.3    71.8    -      -       -      +
    103A  PRO*     1.3    66.7    -      -       +      +
    105A  LEU*     3.2     7.9    +      -       -      +
    106A  VAL*     2.8    29.5    +      -       +      +
    131A  SER*     3.8    30.5    -      -       -      +
    134A  MET*     6.1     0.9    -      -       -      -
    135A  LEU*     4.1    13.7    -      -       +      -
    197A  TRP*     3.9    21.1    -      -       +      -
    301A  RET      3.6    40.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  TRP      3.6     0.9    -      -       -      +
     99A  LEU*     3.0    34.8    -      -       +      +
    100A  LEU      3.9     4.9    -      -       -      +
    101A  THR      3.5     2.7    -      -       -      -
    102A  VAL*     1.3    95.3    -      -       +      +
    104A  LEU*     1.3    51.6    +      -       +      +
    106A  VAL*     3.2     4.3    +      -       +      +
    107A  VAL*     2.8    38.8    +      -       +      +
    124A  PHE*     4.5     2.2    -      -       +      -
    128A  LEU*     3.8    31.4    -      -       +      -
    131A  SER*     5.6     0.7    -      -       -      +
    132A  LEU*     5.3     5.2    -      -       +      -
    135A  LEU*     5.5     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  VAL*     3.6    26.0    -      -       +      +
     67A  LEU*     4.0    25.8    -      -       +      -
     68A  ILE*     3.7    18.6    -      -       +      -
     71A  ILE*     3.8    28.7    -      -       +      -
    100A  LEU      3.8    13.2    -      -       -      +
    101A  THR*     2.9    10.1    +      -       -      +
    103A  PRO*     1.3    77.1    -      -       +      +
    105A  LEU*     1.3    59.9    +      -       -      +
    107A  VAL*     3.0    16.4    +      -       +      +
    108A  GLU      3.0    23.4    +      -       -      -
     42E  ALA*     5.6     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  ILE*     3.7    15.8    -      -       +      +
    101A  THR      2.9    11.7    +      -       -      +
    102A  VAL*     3.7     9.9    -      -       -      +
    104A  LEU*     1.3    75.0    -      -       -      +
    106A  VAL*     1.3    58.3    +      -       -      +
    108A  GLU*     3.1    28.3    +      -       -      +
    109A  PHE*     3.0    46.5    +      -       +      -
    192A  ILE*     6.0     0.9    -      -       +      -
    197A  TRP*     4.2    16.6    -      -       +      +
    231A  ASN*     4.0    19.7    -      -       +      +
    232A  LYS*     5.4     2.5    -      -       +      -
    235A  PHE*     3.7    24.5    -      -       +      -
    301A  RET      3.8    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  VAL*     2.8    32.6    +      -       +      +
    103A  PRO*     3.5    10.8    -      -       +      +
    105A  LEU*     1.3    71.9    -      -       -      +
    107A  VAL*     1.3    66.0    +      -       -      +
    109A  PHE*     3.1    12.7    +      -       +      +
    110A  TYR*     2.9    21.0    +      -       -      +
    124A  PHE*     3.7    23.6    -      -       +      +
    127A  LEU*     3.7    34.0    -      -       +      +
    128A  LEU*     4.2     7.0    -      -       +      +
    131A  SER*     4.6     2.5    -      -       -      +
    162A  MET*     4.3    20.0    -      -       +      -
    197A  TRP*     4.8     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  VAL*     5.0    10.8    -      -       +      -
    103A  PRO*     2.8    26.4    +      -       +      +
    104A  LEU*     3.3    19.7    -      -       +      +
    106A  VAL*     1.3    72.5    -      -       -      +
    108A  GLU*     1.3    62.1    +      -       -      +
    110A  TYR*     3.1     9.4    +      -       +      +
    111A  LEU*     3.0    35.8    +      -       +      +
    124A  PHE*     3.7    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  SER*     3.3    31.8    -      -       -      +
     64A  VAL*     4.1     9.8    -      -       +      +
     65A  SER*     3.0    26.5    +      -       -      -
     68A  ILE*     4.1     9.0    -      -       -      +
    104A  LEU      3.0    10.5    +      -       -      +
    105A  LEU*     3.4    30.8    -      -       +      +
    107A  VAL*     1.3    75.2    -      -       -      +
    109A  PHE*     1.3    66.6    -      -       +      +
    111A  LEU*     3.3    13.8    +      -       +      +
    112A  ILE*     3.1    34.8    +      -       +      +
    235A  PHE*     4.4    10.4    -      -       +      -
    239A  ILE*     4.0    12.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  LEU*     3.0    34.2    +      -       +      -
    106A  VAL*     3.4    17.3    -      -       +      +
    108A  GLU*     1.3    77.8    -      -       +      +
    110A  TYR*     1.3    56.2    +      -       -      +
    112A  ILE*     3.5     5.3    +      -       +      +
    113A  LEU*     2.9    38.4    +      -       +      +
    127A  LEU*     4.9    13.5    -      -       +      -
    162A  MET*     5.6     0.2    -      -       +      -
    189A  MET*     3.5    33.9    -      -       +      +
    192A  ILE*     3.9    20.2    -      -       +      -
    193A  ILE*     3.5    33.4    -      -       +      -
    197A  TRP*     4.2    19.5    -      +       -      -
    235A  PHE*     3.9    28.9    -      +       -      -
----------------------------------------------------------
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Residues in contact with TYR 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  VAL      2.9     6.7    +      -       -      -
    107A  VAL*     3.1    13.4    +      -       +      +
    109A  PHE*     1.3    75.0    -      -       -      +
    111A  LEU*     1.3    74.6    +      -       +      +
    113A  LEU*     3.3     9.3    +      -       -      +
    114A  ALA*     2.8    42.7    +      -       +      +
    120A  ALA*     3.2    42.8    -      -       +      +
    121A  ALA*     3.9    11.1    -      -       +      +
    124A  PHE*     3.7    35.0    -      +       +      +
    127A  LEU*     5.9     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  THR*     4.3    26.2    -      -       +      -
     61A  SER*     4.7    18.8    -      -       -      +
     64A  VAL*     5.2     4.5    -      -       +      -
    107A  VAL*     3.0    27.7    +      -       +      +
    108A  GLU*     3.3    15.9    +      -       +      +
    110A  TYR*     1.3    94.1    -      -       +      +
    112A  ILE*     1.3    63.8    +      -       +      +
    114A  ALA*     3.3    19.1    -      -       +      +
    115A  ALA*     3.7     5.4    +      -       -      +
    240E  TRP*     6.0     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  TRP*     5.6     5.4    -      -       +      -
    108A  GLU*     3.1    25.2    +      -       +      +
    109A  PHE*     3.7     9.4    -      -       +      +
    111A  LEU*     1.3    75.8    -      -       +      +
    113A  LEU*     1.3    64.0    +      -       -      +
    115A  ALA*     3.1    22.6    +      -       -      +
    116A  CYS*     3.7     6.4    -      -       -      -
    182A  VAL*     4.6     4.4    -      -       +      +
    185A  ALA*     3.9    30.5    -      -       +      +
    186A  TYR*     3.6    35.4    -      -       +      +
    189A  MET*     3.8    20.6    -      -       +      -
    235A  PHE*     5.0     3.1    -      -       +      -
    239A  ILE*     4.5    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  PHE      2.9    28.7    +      -       -      +
    110A  TYR*     3.6     7.4    -      -       -      +
    112A  ILE*     1.3    73.0    -      -       -      +
    114A  ALA*     1.3    57.4    +      -       -      +
    116A  CYS*     3.0     7.8    +      -       +      -
    117A  THR*     2.9    42.7    +      -       +      +
    120A  ALA*     3.9     9.9    -      -       +      +
    123A  LEU*     3.7    37.0    -      -       +      -
    124A  PHE      5.8     0.2    -      -       -      +
    127A  LEU*     4.4     8.7    -      -       +      -
    166A  LEU*     3.8    22.2    -      -       +      -
    171A  GLY*     5.9     3.1    -      -       -      +
    186A  TYR*     4.2    16.6    -      -       +      -
    189A  MET*     3.9    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  TYR*     2.8    29.6    +      -       +      +
    111A  LEU*     3.3    18.4    -      -       +      +
    112A  ILE      3.1     0.4    -      -       -      -
    113A  LEU*     1.3    72.0    -      -       -      +
    115A  ALA*     1.3    60.8    +      -       -      +
    116A  CYS      3.2     1.3    +      -       -      -
    117A  THR      3.8     9.6    +      -       -      +
    120A  ALA*     3.8    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  LYS*     6.6     0.2    -      -       -      -
    111A  LEU      3.7     4.2    +      -       -      +
    112A  ILE*     3.1    13.2    +      -       -      +
    114A  ALA*     1.3    77.3    -      -       -      +
    116A  CYS*     1.3    59.4    +      -       -      +
    176A  SER*     5.7     0.3    -      -       -      -
    178A  ALA*     4.1    19.3    -      -       +      +
    182A  VAL*     3.8    29.6    -      -       +      +
----------------------------------------------------------
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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