Contacts of the helix formed by residues 1 - 30 (chain H) in PDB entry 4DZL


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 GLY 1 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      0H  ACE      1.3    70.5    -      -       -      +
      2H  GLU*     1.3    64.0    +      -       -      +
      4H  ALA*     3.5     6.2    +      -       -      +
      5H  ALA*     3.1    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 2 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3G  ILE*     4.2    11.9    -      -       +      +
      7G  LYS*     2.6    45.0    +      -       +      +
      0H  ACE      3.4     0.4    -      -       -      -
      1H  GLY*     1.3    77.2    -      -       -      +
      3H  ILE*     1.3    63.2    +      -       +      +
      5H  ALA*     3.3     6.6    +      -       -      +
      6H  ILE*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 3 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3G  ILE*     5.3    17.3    -      -       +      -
      0H  ACE      3.5    12.2    +      -       +      +
      1H  GLY      3.4     0.4    -      -       -      -
      2H  GLU*     1.3    78.3    -      -       +      +
      4H  ALA*     1.3    60.0    +      -       -      +
      6H  ILE*     3.3    12.5    +      -       +      +
      7H  LYS*     3.1    55.3    +      -       +      +
      6I  ILE*     6.2     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 4 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      0H  ACE      3.4    14.0    +      -       -      +
      1H  GLY*     3.9     7.0    -      -       -      +
      2H  GLU      3.3     0.4    -      -       -      -
      3H  ILE*     1.3    79.9    -      -       -      +
      5H  ALA*     1.3    60.5    +      -       -      +
      7H  LYS*     3.5    11.4    +      -       -      +
      8H  GLN*     3.2    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 5 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1H  GLY      3.1    18.8    +      -       -      +
      2H  GLU*     3.7     7.2    -      -       -      +
      3H  ILE      3.3     0.2    -      -       -      -
      4H  ALA*     1.3    76.0    -      -       -      +
      6H  ILE*     1.3    63.5    +      -       +      +
      8H  GLN*     3.5    12.5    +      -       -      +
      9H  GLU*     3.2    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 6 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3G  ILE*     3.7    29.6    -      -       +      -
      6G  ILE*     4.0    14.1    -      -       +      -
      7G  LYS*     4.0    23.3    -      -       +      -
     10G  ILE*     3.4    23.8    -      -       +      -
      2H  GLU*     3.0    25.1    +      -       +      +
      3H  ILE*     3.3    11.2    +      -       +      +
      5H  ALA*     1.3    76.0    -      -       +      +
      7H  LYS*     1.3    64.5    +      -       -      +
      9H  GLU*     3.2    15.5    +      -       -      +
     10H  ILE*     3.0    30.6    +      -       +      +
      6I  ILE*     5.2     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 7 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3H  ILE*     3.1    42.3    +      -       +      +
      4H  ALA*     3.8     9.4    -      -       -      +
      5H  ALA      3.4     0.2    -      -       -      -
      6H  ILE*     1.3    76.4    -      -       -      +
      8H  GLN*     1.3    57.8    +      -       -      +
     10H  ILE*     3.4    10.1    +      -       -      +
     11H  ALA*     3.0    27.4    +      -       -      +
      2I  GLU*     5.6     6.0    +      -       -      -
      6I  ILE*     4.0    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 8 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4H  ALA      3.2    15.7    +      -       -      +
      5H  ALA*     3.8    10.4    +      -       -      +
      6H  ILE      3.2     0.2    -      -       -      -
      7H  LYS*     1.3    75.8    -      -       -      +
      9H  GLU*     1.3    60.8    +      -       +      +
     11H  ALA*     3.4     9.7    +      -       +      +
     12H  ALA*     3.0    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 9 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7G  LYS*     5.7     2.3    -      -       -      +
     10G  ILE*     4.0    24.3    -      -       +      +
     14G  LYS*     2.8    33.8    +      -       -      +
      5H  ALA*     3.2    19.1    +      -       -      +
      6H  ILE*     3.2    22.2    +      -       -      +
      8H  GLN*     1.3    74.5    -      -       +      +
     10H  ILE*     1.3    59.4    +      -       -      +
     12H  ALA*     3.2     5.9    +      -       -      +
     13H  ILE*     2.9    35.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 10 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10G  ILE*     4.3    13.5    -      -       +      -
      6H  ILE*     3.0    28.0    +      -       +      +
      7H  LYS*     3.7     7.2    -      -       -      +
      8H  GLN      3.3     0.2    -      -       -      -
      9H  GLU*     1.3    76.5    -      -       -      +
     11H  ALA*     1.3    62.8    +      -       -      +
     13H  ILE*     3.2     9.4    +      -       +      +
     14H  LYS*     3.0    28.9    +      -       +      +
      6I  ILE*     3.8    30.1    -      -       +      +
      9I  GLU*     4.1    26.9    -      -       +      +
     10I  ILE*     4.2    26.5    -      -       +      -
     13I  ILE*     4.2    17.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 11 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7H  LYS      3.0    14.2    +      -       -      +
      8H  GLN*     3.6    13.2    -      -       +      +
      9H  GLU      3.3     0.2    -      -       -      -
     10H  ILE*     1.3    79.2    -      -       -      +
     12H  ALA*     1.3    59.8    +      -       -      +
     14H  LYS*     3.4    11.8    +      -       -      +
     15H  LYS*     3.2    27.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 12 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8H  GLN      3.0    16.9    +      -       -      +
      9H  GLU*     3.7     7.0    -      -       -      +
     10H  ILE      3.2     0.2    -      -       -      -
     11H  ALA*     1.3    72.3    -      -       -      +
     13H  ILE*     1.3    61.5    +      -       +      +
     15H  LYS*     3.1    14.3    +      -       +      +
     16H  GLU*     2.9    35.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 13 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10G  ILE*     4.1    31.2    -      -       +      +
     13G  ILE*     3.9    19.1    -      -       +      -
     14G  LYS*     4.6    12.1    -      -       +      -
     17G  ILE*     3.8    25.6    -      -       +      -
      9H  GLU*     2.9    23.7    +      -       +      +
     10H  ILE*     3.6     9.0    -      -       +      +
     12H  ALA*     1.3    75.8    -      -       -      +
     14H  LYS*     1.3    57.4    +      -       -      +
     16H  GLU*     3.2    13.6    +      -       -      +
     17H  ILE*     2.9    32.5    +      -       +      +
     13I  ILE*     3.9    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 14 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10H  ILE*     3.0    23.4    +      -       +      +
     11H  ALA*     3.5    13.2    -      -       -      +
     13H  ILE*     1.3    76.8    -      -       -      +
     15H  LYS*     1.3    61.5    +      -       -      +
     17H  ILE*     3.4     9.3    +      -       -      +
     18H  ALA*     3.1    22.2    +      -       -      +
      9I  GLU*     2.7    37.9    +      -       -      +
     13I  ILE*     4.2    19.7    -      -       +      -
     16I  GLU*     5.9     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 15 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11H  ALA*     3.2    15.2    +      -       +      +
     12H  ALA*     3.1    14.4    +      -       +      +
     14H  LYS*     1.3    75.2    -      -       -      +
     16H  GLU*     1.3    66.2    +      -       +      +
     18H  ALA*     3.2     8.7    +      -       -      +
     19H  ALA*     3.1    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 16 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14G  LYS*     5.4     4.9    -      -       -      +
     17G  ILE*     3.9    30.3    -      -       +      +
     21G  LYS*     2.7    35.5    +      -       -      +
     12H  ALA*     2.9    21.7    +      -       +      +
     13H  ILE*     3.5    18.5    +      -       -      +
     15H  LYS*     1.3    72.4    -      -       +      +
     17H  ILE*     1.3    63.1    +      -       -      +
     19H  ALA*     3.3     7.2    +      -       -      +
     20H  ILE*     3.0    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 17 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17G  ILE*     4.9     4.0    -      -       +      -
     13H  ILE*     2.9    24.3    +      -       +      +
     14H  LYS*     3.6     7.9    -      -       -      +
     15H  LYS      3.2     0.2    -      -       -      -
     16H  GLU*     1.3    76.4    -      -       -      +
     18H  ALA*     1.3    56.2    +      -       -      +
     20H  ILE*     3.2    11.1    +      -       +      +
     21H  LYS*     2.9    55.0    +      -       -      +
     13I  ILE*     3.9    28.5    -      -       +      -
     16I  GLU*     3.9    28.9    -      -       +      +
     17I  ILE*     4.1    22.7    -      -       +      -
     20I  ILE*     4.2    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 18 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14H  LYS      3.1    13.8    +      -       -      +
     15H  LYS*     3.2    10.7    +      -       -      +
     17H  ILE*     1.3    78.0    -      -       -      +
     19H  ALA*     1.3    60.6    +      -       -      +
     21H  LYS*     3.6    10.8    +      -       -      +
     22H  PHI      3.2    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 19 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15H  LYS      3.1    12.3    +      -       -      +
     16H  GLU*     3.3     9.4    +      -       -      +
     18H  ALA*     1.3    73.3    -      -       -      +
     20H  ILE*     1.3    60.8    +      -       +      +
     22H  PHI      3.3     9.1    +      -       -      +
     23H  GLU*     3.0    35.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 20 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17G  ILE*     4.0    30.1    -      -       +      -
     20G  ILE*     3.9    34.3    -      -       +      -
     21G  LYS*     4.3    16.4    -      -       +      -
     24G  ILE*     4.0     8.7    -      -       +      -
     16H  GLU      3.0    19.8    +      -       -      +
     17H  ILE*     3.2    11.2    +      -       +      +
     19H  ALA*     1.3    75.6    -      -       +      +
     21H  LYS*     1.3    65.8    +      -       -      +
     23H  GLU*     3.1    12.5    +      -       -      +
     24H  ILE*     2.9    42.5    +      -       +      +
     17I  ILE*     6.1     0.4    -      -       +      -
     20I  ILE*     3.9    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 21 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17H  ILE*     2.9    33.3    +      -       +      +
     18H  ALA*     3.7    11.4    -      -       -      +
     20H  ILE*     1.3    78.0    -      -       -      +
     22H  PHI      1.3    61.4    +      -       -      +
     24H  ILE*     3.6     8.4    +      -       -      +
     25H  ALA*     3.2    23.0    +      -       -      +
     16I  GLU*     2.8    33.6    +      -       -      -
     20I  ILE*     4.5    14.6    -      -       +      -
     23I  GLU*     6.1     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHI 22 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18H  ALA      3.2    14.3    +      -       -      +
     19H  ALA*     3.4    12.6    -      -       -      +
     20H  ILE      3.1     0.6    -      -       -      -
     21H  LYS*     1.3    74.1    +      -       -      +
     23H  GLU*     1.3    71.0    +      -       +      +
     25H  ALA*     3.3     8.1    +      -       +      +
     26H  ALA*     3.1    27.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 23 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21G  LYS*     5.7     4.0    -      -       -      +
     24G  ILE*     4.0    31.4    -      -       +      +
     28G  LYS*     3.1    28.5    +      -       +      +
     19H  ALA*     3.0    20.8    +      -       +      +
     20H  ILE*     3.1    12.9    +      -       -      +
     22H  PHI      1.3    80.8    +      -       +      +
     24H  ILE*     1.3    57.8    +      -       -      +
     26H  ALA*     3.3     8.3    +      -       -      +
     27H  ILE*     2.9    33.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 24 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24G  ILE*     4.1    14.1    -      -       +      -
     20H  ILE*     2.9    38.1    +      -       +      +
     21H  LYS*     3.9     6.3    -      -       -      +
     23H  GLU*     1.3    74.5    -      -       -      +
     25H  ALA*     1.3    66.2    +      -       -      +
     27H  ILE*     3.1    11.8    +      -       +      +
     28H  LYS*     3.0    35.2    +      -       -      +
     20I  ILE*     3.9    26.0    -      -       +      +
     23I  GLU*     3.5    27.8    -      -       +      +
     24I  ILE*     4.0    17.5    -      -       +      -
     27I  ILE*     4.4     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 25 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21H  LYS      3.2    12.7    +      -       -      +
     22H  PHI      3.3    11.2    +      -       +      +
     24H  ILE*     1.3    79.6    -      -       -      +
     26H  ALA*     1.3    63.0    +      -       -      +
     28H  LYS*     3.4    10.6    +      -       -      +
     29H  GLN*     3.2    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 26 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22H  PHI      3.1    21.2    +      -       +      +
     23H  GLU*     3.6    10.8    -      -       -      +
     25H  ALA*     1.3    72.5    -      -       -      +
     27H  ILE*     1.3    66.2    +      -       +      +
     29H  GLN*     3.3    17.2    +      -       -      +
     30H  GLY*     3.2    17.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 27 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24G  ILE*     3.8    33.2    -      -       +      +
     27G  ILE*     3.9    32.5    -      -       +      -
     28G  LYS*     4.1    22.4    -      -       +      -
     23H  GLU      2.9    22.0    +      -       -      +
     24H  ILE*     3.1    13.7    +      -       +      +
     26H  ALA*     1.3    75.1    -      -       +      +
     28H  LYS*     1.3    64.6    +      -       -      +
     30H  GLY*     3.1    23.3    +      -       -      -
     27I  ILE*     4.6    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 28 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LYS*     5.8    11.0    -      -       -      +
     18C  ALA*     5.9     4.6    -      -       -      +
     24H  ILE*     3.0    20.2    +      -       +      +
     25H  ALA*     3.7    12.1    -      -       -      +
     27H  ILE*     1.3    77.0    -      -       -      +
     29H  GLN*     1.3    60.9    +      -       -      +
     30H  GLY      4.4     2.1    -      -       -      +
     23I  GLU*     2.7    34.7    +      -       -      +
     27I  ILE*     3.9    31.6    -      -       +      -
     31L  TYR*     6.4     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 29 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LYS*     6.4     0.2    -      -       -      +
     25H  ALA*     3.2    23.0    +      -       -      +
     26H  ALA*     3.5    16.4    -      -       -      +
     27H  ILE      3.1     0.6    -      -       -      -
     28H  LYS*     1.3    78.8    -      -       +      +
     30H  GLY*     1.3    64.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 30 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26H  ALA      3.2     7.2    +      -       -      -
     27H  ILE*     3.1    17.1    +      -       -      +
     28H  LYS      4.4     2.6    -      -       -      +
     29H  GLN*     1.3    86.1    -      -       -      +
----------------------------------------------------------
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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