Contacts of the helix formed by residues 92 - 116 (chain F) in PDB entry 3ECS


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 ILE 92 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90F  LYS*     4.1    22.4    -      -       +      +
     91F  LYS*     1.3    72.4    -      -       -      +
     93F  MSE      1.3    68.5    +      -       +      +
     94F  ILE      3.1     3.4    -      -       -      -
     95F  GLU*     2.9    47.1    +      -       +      +
     96F  ARG*     3.5    25.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with MSE 93 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34F  LEU*     4.2    23.8    -      -       +      -
     43F  GLN*     4.7    17.3    -      -       -      +
     46F  ARG*     3.8    27.1    -      -       +      -
     47F  ALA*     4.9     9.6    -      -       -      +
     50F  THR*     6.6     0.4    -      -       -      -
     76F  ILE*     3.4    39.4    -      -       +      +
     77F  SER      4.0    13.9    -      -       -      +
     91F  LYS*     3.2    30.6    -      -       +      -
     92F  ILE*     1.3    85.0    -      -       +      +
     94F  ILE*     1.3    57.4    +      -       -      +
     96F  ARG*     2.8    24.6    +      -       -      +
     97F  GLY*     2.9    11.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 94 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31F  LEU*     3.9    16.8    -      -       +      -
     34F  LEU*     3.4    40.2    -      -       +      -
     35F  LYS*     3.8    30.7    -      -       +      +
     91F  LYS*     4.1    21.3    -      -       -      +
     92F  ILE*     3.1     0.6    -      -       -      +
     93F  MSE      1.3    76.7    -      -       -      +
     95F  GLU*     1.3    61.2    +      -       -      +
     97F  GLY*     3.7     3.0    -      -       -      +
     98F  GLU*     3.1    38.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 95 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92F  ILE*     2.9    39.5    +      -       +      +
     94F  ILE*     1.3    78.7    -      -       -      +
     96F  ARG*     1.3    60.0    +      -       +      +
     98F  GLU*     3.5     8.3    +      -       -      +
     99F  LEU*     3.1    26.4    +      -       -      +
    102F  ARG*     4.8     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 96 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75F  PHE*     3.3    63.8    +      -       +      +
     76F  ILE*     4.2     9.4    -      -       +      +
     77F  SER*     3.9    21.2    +      -       -      +
     92F  ILE*     3.7    31.4    -      -       +      +
     93F  MSE      2.8     8.6    +      -       -      +
     95F  GLU*     1.3    76.8    -      -       +      +
     97F  GLY*     1.3    55.6    +      -       -      +
     98F  GLU      3.1     0.4    -      -       -      -
     99F  LEU*     3.1     8.3    +      -       +      +
    100F  PHE*     2.7    36.0    +      -       -      +
    307F  ALA*     4.6    15.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 97 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31F  LEU*     3.6    14.0    -      -       -      +
     34F  LEU*     5.8     0.2    -      -       -      -
     72F  PHE*     3.6    32.4    -      -       -      -
     76F  ILE*     4.3     5.3    -      -       -      +
     93F  MSE      2.9    12.1    +      -       -      -
     94F  ILE*     3.3     6.0    +      -       -      -
     96F  ARG*     1.3    77.2    -      -       -      +
     98F  GLU*     1.3    57.5    +      -       -      +
    100F  PHE*     3.7     1.5    +      -       -      -
    101F  LEU*     3.1    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 98 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31F  LEU*     3.5    23.3    -      -       +      +
     35F  LYS*     3.7    20.0    +      -       -      -
     94F  ILE*     3.1    31.1    +      -       -      +
     95F  GLU*     4.0     7.7    -      -       -      +
     97F  GLY*     1.3    75.8    -      -       -      +
     99F  LEU*     1.3    61.6    +      -       -      +
    100F  PHE      3.2     0.4    -      -       -      -
    101F  LEU*     3.8     4.1    -      -       +      +
    102F  ARG*     2.8    46.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 99 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75F  PHE*     4.0    24.7    -      -       +      -
     95F  GLU      3.1    18.6    +      -       -      +
     96F  ARG*     3.4     8.3    -      -       -      +
     98F  GLU*     1.3    78.0    -      -       -      +
    100F  PHE*     1.3    62.0    +      -       -      +
    102F  ARG*     3.4    28.4    +      -       +      +
    103F  ARG*     3.2    45.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 100 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27F  ILE*     3.6    33.2    -      -       +      -
     68F  GLY      4.4     2.5    -      -       -      -
     71F  LEU*     3.7    28.3    -      -       +      -
     72F  PHE*     3.7    33.2    -      +       +      -
     75F  PHE*     3.6    33.0    -      +       +      -
     96F  ARG      2.7    16.6    +      -       -      +
     97F  GLY*     3.7     8.7    -      -       -      +
     99F  LEU*     1.3    77.3    -      -       -      +
    101F  LEU*     1.3    62.0    +      -       -      +
    103F  ARG*     3.1    15.5    +      -       -      +
    104F  ILE*     3.2    33.6    +      -       +      +
    233F  PHE*     5.3     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 101 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24F  VAL*     4.3     8.1    -      -       +      +
     27F  ILE*     4.8     7.0    -      -       +      -
     28F  ARG*     3.4    53.4    -      -       +      +
     31F  LEU*     4.1    17.9    -      -       +      -
     97F  GLY      3.1    16.0    +      -       -      +
     98F  GLU*     3.8     6.1    -      -       +      +
    100F  PHE*     1.3    79.0    -      -       -      +
    102F  ARG*     1.3    62.1    +      -       -      +
    103F  ARG      3.2     0.7    +      -       -      -
    104F  ILE*     3.6    14.7    +      -       +      +
    105F  SER*     2.6    46.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 102 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95F  GLU      4.8     2.6    +      -       -      -
     98F  GLU*     2.8    44.6    +      -       -      +
     99F  LEU*     3.4    35.9    -      -       +      +
    101F  LEU*     1.3    78.8    -      -       -      +
    103F  ARG*     1.3    59.2    +      -       -      +
    105F  SER*     3.8     5.1    -      -       -      -
    106F  LEU*     2.8    34.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 103 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509A  SO4      5.1    14.6    +      -       -      +
     75F  PHE*     4.5    22.4    -      -       -      -
     99F  LEU*     3.2    38.9    +      -       -      +
    100F  PHE*     3.1     8.0    +      -       -      +
    101F  LEU      3.1     1.0    -      -       -      -
    102F  ARG*     1.3    77.3    -      -       -      +
    104F  ILE*     1.3    63.0    +      -       +      +
    105F  SER      3.0     6.1    +      -       -      -
    106F  LEU*     3.2    29.6    +      -       +      +
    107F  SER*     3.6     6.2    +      -       -      -
    110F  LYS*     4.2     7.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 104 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24F  VAL*     3.8    26.3    -      -       +      +
     27F  ILE*     3.4    38.8    -      -       +      -
    100F  PHE*     3.2    35.8    +      -       +      +
    101F  LEU*     3.6    18.8    -      -       +      +
    103F  ARG*     1.3    77.5    -      -       +      +
    105F  SER*     1.3    58.0    +      -       -      +
    106F  LEU      3.2     1.3    -      -       -      -
    107F  SER*     3.3    26.2    -      -       -      +
    108F  ARG      4.7     1.2    +      -       -      -
    232F  SER*     5.6     4.3    -      -       -      +
    233F  PHE*     3.9    30.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 105 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24F  VAL*     4.7     8.7    -      -       -      +
    101F  LEU*     2.6    36.8    +      -       -      +
    102F  ARG*     3.8     8.5    -      -       -      -
    103F  ARG      3.0     0.8    -      -       -      -
    104F  ILE*     1.3    78.6    -      -       -      +
    106F  LEU*     1.3    63.6    +      -       -      +
    107F  SER      3.5     0.2    -      -       -      -
    108F  ARG*     5.1     4.1    +      -       -      +
    109F  ASN*     4.9     8.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 106 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509A  SO4      5.3     5.4    -      -       -      +
    102F  ARG*     2.8    33.2    -      -       +      +
    103F  ARG*     3.2    15.6    +      -       +      +
    105F  SER*     1.3    83.3    -      -       -      +
    107F  SER*     1.3    66.5    +      -       -      +
    108F  ARG      3.5     0.9    -      -       -      -
    109F  ASN*     3.2    10.9    +      -       -      +
    110F  LYS*     2.9    51.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 107 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103F  ARG      3.6     3.6    +      -       -      -
    104F  ILE*     3.3    28.9    +      -       -      +
    105F  SER      3.5     0.6    -      -       -      -
    106F  LEU*     1.3    76.0    -      -       -      +
    108F  ARG*     1.3    65.2    +      -       -      +
    110F  LYS*     3.0     4.6    +      -       -      +
    111F  ILE*     2.9    28.3    +      -       -      +
    231F  GLU*     3.7    23.1    -      -       -      +
    232F  SER*     4.2     3.6    +      -       -      -
    233F  PHE*     4.8     0.9    -      -       -      -
    287F  ASP*     3.5    34.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 108 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19F  ASP*     2.8    38.6    +      -       -      -
     20F  MSE      4.2     1.4    -      -       -      +
     21F  ALA*     3.7    24.5    -      -       -      +
    104F  ILE      4.7     1.4    +      -       -      -
    105F  SER      5.1     3.3    +      -       -      +
    106F  LEU      3.5     0.4    -      -       -      -
    107F  SER*     1.3    78.1    -      -       -      +
    109F  ASN*     1.3    58.3    +      -       -      +
    111F  ILE*     3.4    12.1    +      -       -      +
    112F  ALA*     3.0    25.0    +      -       -      +
    132F  ARG*     3.7    27.2    -      -       -      +
    133F  VAL*     4.4    16.4    -      -       +      +
    136F  ARG*     2.8    55.3    -      -       +      +
    231F  GLU*     4.2    16.0    +      -       +      +
    506F  SO4      5.6     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 109 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105F  SER      4.9     8.5    +      -       -      -
    106F  LEU*     3.2     9.7    +      -       -      +
    107F  SER      3.2     0.6    -      -       -      -
    108F  ARG*     1.3    76.9    -      -       -      +
    110F  LYS*     1.3    67.2    +      -       -      +
    111F  ILE      3.1     1.1    -      -       -      -
    112F  ALA*     3.1    16.0    +      -       -      +
    113F  ASP*     3.1    16.9    +      -       -      +
    136F  ARG*     4.2    25.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 110 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  THR*     5.6     0.5    +      -       -      -
    146A  LYS*     5.0     4.7    -      -       -      +
    509A  SO4      3.2    39.3    +      -       -      +
    103F  ARG*     4.2     8.3    +      -       -      +
    106F  LEU*     2.9    56.8    +      -       +      +
    107F  SER*     3.5     7.8    -      -       -      +
    109F  ASN*     1.3    71.6    -      -       -      +
    111F  ILE*     1.3    62.7    +      -       -      +
    113F  ASP*     2.8    22.0    -      -       -      +
    114F  LEU*     3.0    16.3    +      -       -      +
    286F  THR      5.3     1.1    -      -       -      +
    287F  ASP*     3.8    33.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 111 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107F  SER      2.9    20.7    +      -       -      +
    108F  ARG*     3.5     7.9    -      -       -      +
    110F  LYS*     1.3    78.0    -      -       -      +
    112F  ALA*     1.3    62.0    +      -       -      +
    114F  LEU*     3.6     6.8    -      -       -      +
    115F  CYS*     3.0    24.1    +      -       -      +
    133F  VAL*     3.7    23.3    -      -       +      -
    137F  VAL*     4.3     2.0    -      -       +      -
    229F  VAL*     3.8    15.0    -      -       +      -
    230F  ALA*     3.3    35.2    -      -       -      +
    231F  GLU*     3.6    15.0    -      -       +      +
    285F  PHE*     3.7    15.9    -      -       +      +
    286F  THR      3.6    22.2    -      -       -      -
    287F  ASP*     3.7     4.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 112 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108F  ARG      3.0    14.2    +      -       -      +
    109F  ASN*     3.1    12.7    +      -       -      +
    111F  ILE*     1.3    78.4    -      -       -      +
    113F  ASP*     1.3    57.4    +      -       -      +
    116F  HIS*     3.1    33.4    +      -       -      +
    136F  ARG*     3.7    35.7    -      -       +      +
    137F  VAL*     3.8    11.9    -      -       +      +
    140F  ALA*     3.8     8.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 113 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  ASP*     4.6     3.6    -      -       -      +
    116A  HIS*     2.6    46.2    +      -       +      -
    117A  THR*     5.7     2.1    +      -       -      -
    144A  ALA*     4.6     7.3    -      -       -      +
    109F  ASN      3.1    13.2    +      -       -      +
    110F  LYS*     2.8    29.1    -      -       -      +
    112F  ALA*     1.3    75.7    -      -       -      +
    114F  LEU*     1.3    60.0    +      -       -      +
    116F  HIS*     3.4    28.1    +      -       +      +
    117F  THR*     3.6     5.4    +      -       -      -
    140F  ALA*     5.0     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 114 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  ASP      5.9     0.7    -      -       -      -
    114A  LEU*     5.4     1.3    -      -       +      +
    117A  THR*     3.6    36.8    -      -       +      +
    118A  PHE*     6.1     0.2    -      -       +      -
    110F  LYS      3.0    17.1    +      -       -      +
    111F  ILE*     3.6     4.0    -      -       -      +
    112F  ALA      3.1     0.2    -      -       -      -
    113F  ASP*     1.3    82.7    -      -       -      +
    115F  CYS*     1.3    58.7    +      -       -      +
    117F  THR*     4.0     4.3    +      -       -      -
    118F  PHE*     3.3    24.7    -      -       +      -
    285F  PHE*     4.0    23.3    -      -       +      -
    286F  THR      3.3    34.5    -      -       -      +
    289F  GLY*     4.0    15.3    -      -       -      -
    290F  VAL*     4.1    16.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 115 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111F  ILE      3.0    16.8    +      -       -      +
    114F  LEU*     1.3    75.4    -      -       -      +
    116F  HIS*     1.3    59.7    +      -       -      +
    117F  THR      3.0     3.1    -      -       -      -
    118F  PHE*     2.8    30.8    +      -       -      +
    119F  ILE*     4.1     3.5    +      -       -      +
    137F  VAL*     4.1    20.9    -      -       +      -
    194F  ILE*     4.9    12.1    -      -       -      -
    227F  TYR*     5.5     3.8    -      -       -      -
    229F  VAL*     3.6    25.4    -      -       +      -
    285F  PHE*     3.7    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 116 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  ASP*     3.9    19.4    +      -       -      -
    116A  HIS*     6.3     0.2    -      -       -      -
    112F  ALA      3.1    18.7    +      -       -      +
    113F  ASP*     3.4    25.7    +      -       +      +
    115F  CYS*     1.3    75.1    -      -       -      +
    117F  THR*     1.3    93.1    +      -       -      +
    118F  PHE      3.0     1.6    +      -       -      -
    119F  ILE*     3.0    30.7    +      -       -      +
    137F  VAL*     3.9     6.5    -      -       -      +
    140F  ALA*     3.3    33.5    +      -       +      -
    141F  ALA*     3.8    13.0    -      -       -      +
    144F  ALA*     3.6    21.6    -      -       +      +
    146F  LYS*     4.0     9.6    +      -       -      +
----------------------------------------------------------
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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