Contacts of the helix formed by residues 2 - 29 (chain S) in PDB entry 1VF5


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 THR 2 (chain S).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1S  MET*     1.3    74.2    -      -       -      +
      3S  GLU*     1.3    70.5    +      -       +      +
      4S  GLU      2.7    17.4    +      -       -      -
      5S  MET*     2.8    39.2    +      -       -      +
      6S  LEU*     3.0    38.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 3 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33P  GLU*     4.9     9.5    -      -       -      +
     35P  GLU*     5.7     0.5    -      -       -      +
      1S  MET*     3.4     2.1    -      -       -      -
      2S  THR*     1.3    84.6    -      -       +      +
      4S  GLU*     1.3    58.2    +      -       +      +
      5S  MET      3.3     0.7    -      -       -      -
      6S  LEU*     3.6    25.5    -      -       +      +
      7S  TYR*     3.3    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 4 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35P  GLU*     5.4     4.2    -      -       -      +
    245P  THR*     4.9     4.8    +      -       -      -
    246P  GLU*     5.1     7.8    -      -       -      +
      1R  MET      6.1     0.9    -      -       -      +
      2R  ILE*     4.2    11.2    -      -       +      +
      1S  MET*     2.8    56.2    -      -       -      +
      2S  THR      2.7     3.8    +      -       -      -
      3S  GLU*     1.3    76.7    -      -       +      +
      5S  MET*     1.3    59.6    +      -       -      +
      7S  TYR*     3.8    20.3    -      -       +      -
      8S  ALA*     3.1    19.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 5 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79O  TRP*     4.1    15.3    -      -       +      -
      1R  MET      3.6    30.5    -      -       -      +
      2R  ILE      3.9     1.8    -      -       -      +
      5R  ALA*     2.8    32.1    -      -       +      +
      8R  TYR*     4.0    20.0    -      -       +      -
      1S  MET      5.2     2.2    -      -       -      +
      2S  THR*     2.8    31.6    +      -       -      +
      4S  GLU*     1.3    74.3    -      -       -      +
      6S  LEU*     1.3    68.6    +      -       +      +
      7S  TYR      3.0     2.2    -      -       -      -
      8S  ALA*     2.7     9.1    +      -       -      -
      9S  ALA      2.5    33.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 6 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5R  ALA*     4.9     0.7    -      -       -      -
      2S  THR*     3.0    39.8    +      -       +      +
      3S  GLU*     3.6    30.3    -      -       +      -
      4S  GLU      3.6     0.2    -      -       -      -
      5S  MET*     1.3    89.3    -      -       +      +
      7S  TYR*     1.3    58.0    +      -       -      +
      9S  ALA*     4.1     2.9    -      -       -      +
     10S  LEU*     2.7    34.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 7 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38P  GLN*     5.5     8.7    -      -       -      +
      3S  GLU      3.3    22.0    +      -       -      +
      4S  GLU*     3.8    19.1    -      -       +      -
      5S  MET      3.0     0.2    -      -       -      -
      6S  LEU*     1.3    78.0    -      -       -      +
      8S  ALA*     1.3    71.5    +      -       +      +
      9S  ALA      3.2     1.4    +      -       -      -
     10S  LEU*     3.4    10.4    +      -       +      +
     11S  LEU*     2.9    50.0    +      -       +      +
     15T  PHE*     5.8     5.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 8 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2R  ILE*     3.3    32.5    -      -       +      +
      5R  ALA*     4.2     2.2    -      -       +      -
      6R  VAL*     4.4     7.4    -      -       +      +
      4S  GLU      3.1    20.0    -      -       -      +
      5S  MET*     2.7    12.9    +      -       -      +
      7S  TYR*     1.3    91.4    -      -       +      +
      9S  ALA*     1.3    54.4    +      -       -      -
     11S  LEU*     4.0     8.8    -      -       -      +
     12S  SER*     3.2    20.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 9 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5R  ALA*     3.0    40.3    -      -       +      +
      8R  TYR*     5.1     2.2    -      -       +      -
      9R  ILE*     2.6    37.4    -      -       +      +
      5S  MET      2.5    11.2    +      -       -      +
      6S  LEU*     4.3     4.9    -      -       -      +
      8S  ALA*     1.3    71.0    -      -       -      +
     10S  LEU*     1.3    71.1    +      -       +      +
     11S  LEU      3.0     2.7    +      -       -      -
     12S  SER      3.1     5.9    +      -       -      -
     13S  PHE      3.4     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 10 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9R  ILE*     5.0     7.4    -      -       +      -
      6S  LEU*     2.7    27.4    -      -       +      +
      7S  TYR*     3.4     9.6    +      -       +      +
      9S  ALA*     1.3    81.1    -      -       +      +
     11S  LEU*     1.3    57.2    +      -       +      +
     13S  PHE*     3.5     6.4    +      -       -      +
     14S  GLY*     3.1    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 11 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7S  TYR*     2.9    48.0    +      -       +      +
      8S  ALA*     4.0     9.4    -      -       -      +
      9S  ALA      3.0     0.6    +      -       -      -
     10S  LEU*     1.3    75.6    -      -       +      +
     12S  SER*     1.3    60.4    +      -       -      +
     14S  GLY*     5.4     0.2    -      -       -      -
     15S  LEU*     2.9    51.5    +      -       +      +
     19T  GLY*     6.4     2.0    -      -       -      -
     22T  PHE*     5.3     0.2    -      -       -      -
      5U  VAL*     4.1    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 12 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6R  VAL*     3.4    26.4    +      -       -      +
      9R  ILE*     3.3    17.5    -      -       -      +
     10R  VAL*     4.1    15.2    -      -       -      +
      8S  ALA      3.2    16.6    +      -       -      -
      9S  ALA      3.1     1.6    +      -       -      -
     11S  LEU*     1.3    75.0    -      -       -      +
     13S  PHE*     1.3    65.2    +      -       -      +
     16S  ILE*     3.0    27.0    +      -       -      +
     22T  PHE*     4.1    12.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 13 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9R  ILE*     3.4    29.9    -      -       +      +
     12R  ILE*     3.6    17.7    -      -       +      -
     13R  ALA*     3.4    42.4    -      -       +      -
     16R  PHE*     4.3    23.6    -      +       -      -
   1101R  BCR      4.5     0.4    -      -       +      -
      9S  ALA      3.4     1.2    +      -       -      -
     10S  LEU*     3.7     8.5    -      -       -      +
     11S  LEU      3.4     0.4    -      -       -      -
     12S  SER*     1.3    79.1    -      -       -      +
     14S  GLY*     1.3    68.0    +      -       -      +
     16S  ILE*     3.0    23.7    +      -       -      +
     17S  PHE*     3.0    36.0    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLY 14 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10S  LEU      3.1    11.8    +      -       -      -
     11S  LEU*     4.9     0.4    -      -       -      -
     13S  PHE*     1.3    79.3    -      -       -      +
     15S  LEU*     1.3    57.7    +      -       -      +
     17S  PHE*     2.6    38.6    +      -       -      +
     18S  VAL*     3.1    14.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 15 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11S  LEU*     2.9    50.9    +      -       +      +
     12S  SER      4.2     0.7    -      -       -      +
     14S  GLY*     1.3    73.3    -      -       -      +
     16S  ILE*     1.3    56.9    +      -       -      +
     18S  VAL*     3.3    21.0    -      -       +      +
     19S  GLY*     2.8    29.1    +      -       -      -
     19T  GLY*     3.4    23.3    -      -       -      +
     22T  PHE*     3.9    22.2    -      -       +      -
     26T  TYR*     3.0    29.4    +      -       +      +
      5U  VAL*     6.1     2.2    -      -       +      -
      9U  VAL*     5.2     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 16 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10R  VAL*     5.5     2.7    -      -       +      -
     13R  ALA*     4.1    13.7    -      -       +      -
   1101R  BCR      3.4    66.4    -      -       +      -
     12S  SER      3.0    24.9    -      -       -      +
     13S  PHE      3.0    13.3    +      -       -      +
     14S  GLY      2.7     4.9    +      -       -      -
     15S  LEU*     1.3    74.3    -      -       -      +
     17S  PHE*     1.3    54.6    +      -       +      +
     19S  GLY*     3.3     0.7    +      -       -      -
     20S  TRP*     2.8    35.9    +      -       +      +
     22T  PHE*     3.9    23.6    -      -       +      -
     26T  TYR*     6.1     0.2    -      -       -      -
     29T  TYR*     4.0    15.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 17 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13R  ALA*     4.9     0.9    -      -       +      -
   1101R  BCR      3.3    53.8    -      -       +      -
     13S  PHE*     3.0    57.9    -      +       -      -
     14S  GLY*     2.6    17.2    +      -       -      +
     16S  ILE*     1.3    79.2    -      -       +      +
     18S  VAL*     1.3    56.3    +      -       +      +
     20S  TRP*     3.6    21.7    -      +       +      +
     21S  GLY*     2.8    28.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 18 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14S  GLY      3.1    14.6    +      -       -      +
     15S  LEU*     3.0    30.0    +      -       +      +
     17S  PHE*     1.3    75.6    -      -       +      +
     19S  GLY*     1.3    64.4    +      -       -      +
     21S  GLY*     3.6     1.4    +      -       -      -
     22S  LEU*     3.1    36.7    +      -       +      +
     26T  TYR*     4.9     4.5    -      -       +      -
     13U  VAL*     5.9     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 19 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15S  LEU      2.8    10.3    +      -       -      -
     18S  VAL*     1.3    75.6    -      -       -      +
     20S  TRP*     1.3    65.8    +      -       -      +
     22S  LEU*     3.1     5.0    +      -       -      +
     23S  GLY      2.9    18.7    +      -       -      -
     26T  TYR*     3.5    24.1    -      -       -      -
     29T  TYR*     3.0    30.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 20 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1101R  BCR      3.4    63.3    -      -       +      -
     16S  ILE*     2.8    19.8    +      -       +      +
     17S  PHE*     3.6    26.0    -      +       +      +
     19S  GLY*     1.3    74.0    -      -       -      +
     21S  GLY*     1.3    65.3    +      -       -      +
     23S  GLY*     3.0     3.3    +      -       -      -
     24S  VAL*     2.9    43.9    +      -       +      +
     29T  TYR*     3.2    21.9    -      +       +      -
----------------------------------------------------------
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Residues in contact with GLY 21 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17S  PHE      2.8    19.1    +      -       -      -
     18S  VAL*     3.9     2.0    -      -       -      -
     19S  GLY      3.1     0.2    -      -       -      -
     20S  TRP*     1.3    75.3    -      -       -      +
     22S  LEU*     1.3    52.3    +      -       -      +
     24S  VAL*     2.9    12.0    +      -       -      +
     25S  LEU*     2.7    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 22 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18S  VAL*     3.1    23.1    +      -       +      +
     19S  GLY*     3.1     6.1    +      -       -      +
     21S  GLY*     1.3    73.2    -      -       -      +
     23S  GLY*     1.3    54.6    +      -       -      +
     25S  LEU*     3.9    21.5    -      -       +      -
     26S  LEU*     2.7    48.8    +      -       +      +
     23T  TYR*     5.6     2.5    -      -       +      -
     26T  TYR*     3.9    30.5    -      -       +      +
     13U  VAL*     3.9    23.3    -      -       +      -
     17U  TRP*     5.1    16.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 23 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19S  GLY      2.9    13.0    +      -       -      -
     20S  TRP      3.5     3.8    -      -       -      -
     21S  GLY      2.9     0.2    +      -       -      -
     22S  LEU*     1.3    74.0    -      -       -      +
     24S  VAL*     1.3    66.3    +      -       -      +
     26S  LEU*     2.9    13.7    +      -       -      +
     27S  LEU*     2.9    17.0    +      -       -      +
     26T  TYR      3.9    10.0    +      -       -      -
     29T  TYR      3.7    27.8    -      -       -      -
     30T  LYS*     4.0     5.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 24 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20S  TRP*     2.9    41.7    +      -       +      +
     21S  GLY*     3.3     7.6    -      -       -      +
     23S  GLY*     1.3    75.8    -      -       -      +
     25S  LEU*     1.3    64.3    +      -       -      +
     27S  LEU*     3.0    11.4    +      -       +      +
     28S  LYS*     2.8    42.4    +      -       +      +
     32S  ALA*     5.5     0.2    -      -       -      +
     29T  TYR      4.3     2.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 25 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21S  GLY      2.7    20.3    +      -       -      +
     22S  LEU*     3.7    20.9    -      -       +      +
     24S  VAL*     1.3    73.6    -      -       -      +
     26S  LEU*     1.3    60.6    +      -       +      +
     28S  LYS*     3.4    21.4    +      -       +      +
     29S  ILE*     3.2    33.3    +      -       +      +
     17U  TRP*     3.8    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 26 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22S  LEU*     2.7    36.1    +      -       +      +
     23S  GLY*     2.9     6.9    +      -       -      +
     25S  LEU*     1.3    72.0    -      -       +      +
     27S  LEU*     1.3    65.9    +      -       -      +
     29S  ILE*     3.0    32.7    -      -       +      +
     30S  GLN*     3.2    12.4    -      -       +      +
     26T  TYR      6.0     0.9    -      -       -      +
     27T  GLN*     5.7     5.8    -      -       -      +
     30T  LYS*     3.3    41.7    -      -       +      +
     17U  TRP*     2.9    38.8    -      -       +      +
     20U  ALA*     5.0    11.2    -      -       +      -
     21U  MET*     5.1     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 27 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278P  GLN*     6.0     0.4    -      -       -      +
     23S  GLY      2.9    13.9    +      -       -      +
     24S  VAL*     3.4    11.4    -      -       +      +
     26S  LEU*     1.3    75.5    -      -       -      +
     28S  LYS*     1.3    56.1    +      -       -      +
     30S  GLN*     2.9    33.0    +      -       -      +
     31S  GLY      2.7    37.6    +      -       -      +
     32S  ALA*     3.9    23.1    -      -       +      -
     29T  TYR      4.8     3.1    -      -       -      +
     30T  LYS*     3.1    35.0    -      -       +      +
     32T  PRO*     3.3    33.0    -      -       +      +
     33T  ASN*     5.2     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 28 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24S  VAL*     2.8    27.2    +      -       +      +
     25S  LEU*     3.6    28.8    -      -       +      +
     26S  LEU      3.2     0.2    -      -       -      -
     27S  LEU*     1.3    77.0    -      -       -      +
     29S  ILE*     1.3    58.4    +      -       +      +
     30S  GLN      3.1     4.9    +      -       -      -
     31S  GLY*     3.7     6.2    +      -       -      +
     32S  ALA*     4.4    13.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 29 (chain S). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25S  LEU*     3.2    32.3    -      -       +      +
     26S  LEU*     3.0    36.1    -      -       +      +
     28S  LYS*     1.3    77.5    -      -       +      +
     30S  GLN*     1.3    61.1    +      -       -      +
     17U  TRP*     4.0    14.8    -      -       +      -
     21U  MET*     4.3    15.0    -      -       +      -
     24U  TRP*     4.8    17.2    -      -       -      -
----------------------------------------------------------
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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