Contacts of the helix formed by residues 9 - 33 (chain L) in PDB entry 1QGH


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 9 (chain L).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8L  ASP*     1.3    75.0    -      -       -      +
     10L  LYS*     1.3    57.4    +      -       -      +
     12L  PHE*     2.9     8.2    +      -       +      +
     13L  LEU*     2.7    55.0    +      -       +      +
     67L  ILE*     3.8     8.3    -      -       +      -
    119L  LEU*     4.6     2.7    -      -       -      -
    120L  THR*     4.1    14.7    +      -       -      +
    123L  GLU*     1.9    37.8    +      -       -      +
    125L  ASP*     3.7    24.6    -      -       -      +
    128L  THR*     4.0    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 10 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8L  ASP*     3.3    14.4    +      -       -      +
      9L  THR*     1.3    77.7    -      -       -      +
     11L  GLU*     1.3    71.7    +      -       -      +
     13L  LEU*     3.2     2.3    +      -       -      +
     14L  ASN*     2.9    24.7    +      -       -      +
     64L  LEU*     3.7    17.6    -      -       +      +
     67L  ILE*     3.4    39.4    +      -       +      -
     68L  GLY*     3.8    15.5    +      -       -      -
     69L  GLY*     4.0    15.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 11 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7L  VAL*     3.2    33.1    -      -       +      +
      8L  ASP*     2.8    35.6    +      -       -      +
     10L  LYS*     1.3    79.3    -      -       -      +
     12L  PHE*     1.3    67.8    +      -       -      +
     14L  ASN*     4.0     5.4    -      -       -      +
     15L  HIS*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 12 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7L  VAL*     5.3     7.9    -      -       +      -
      8L  ASP      2.6    21.9    +      -       -      +
      9L  THR*     3.4     4.7    -      -       +      +
     11L  GLU*     1.3    73.6    -      -       -      +
     13L  LEU*     1.3    82.6    +      -       +      +
     15L  HIS*     3.1     8.3    +      -       -      +
     16L  GLN*     3.1    54.1    +      -       +      +
    112L  GLU*     3.1    30.1    -      -       +      -
    113L  TYR*     3.9    10.8    -      +       -      -
    115L  GLN*     4.7     4.3    -      -       +      -
    116L  GLY*     3.5    27.8    -      -       -      -
    119L  LEU*     4.0    14.6    -      -       +      -
    132L  LEU*     4.0    21.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 13 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9L  THR*     2.7    34.7    +      -       +      +
     10L  LYS      3.6     4.0    -      -       -      +
     12L  PHE*     1.3    98.2    -      -       +      +
     14L  ASN*     1.3    58.7    +      -       -      +
     16L  GLN*     2.8    21.8    +      -       +      +
     17L  VAL*     2.9    10.9    +      -       -      +
     60L  VAL*     3.5    27.5    -      -       +      +
     63L  ARG*     4.2     7.9    -      -       +      -
     64L  LEU*     4.2    19.5    -      -       +      -
     67L  ILE*     3.9    16.2    -      -       +      -
    128L  THR*     3.7    26.5    -      -       +      -
    131L  MET*     4.3    11.9    -      -       +      -
    132L  LEU*     4.3     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 14 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10L  LYS      2.9    15.9    +      -       -      +
     11L  GLU*     4.0     6.7    -      -       -      +
     13L  LEU*     1.3    77.0    -      -       -      +
     15L  HIS*     1.3    64.6    +      -       -      +
     17L  VAL*     3.0    15.2    +      -       -      +
     18L  ALA      3.1     9.0    +      -       -      -
     64L  LEU*     3.7    13.6    -      -       +      +
     70L  SER      3.1    21.0    +      -       -      -
     71L  PRO*     3.1     7.6    -      -       -      +
     72L  PHE*     2.7    70.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 15 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11L  GLU      3.0    17.9    +      -       -      +
     12L  PHE*     3.4     9.3    -      -       +      +
     14L  ASN*     1.3    79.0    -      -       -      +
     16L  GLN*     1.3    66.6    +      -       -      +
     18L  ALA*     3.3     5.9    +      -       -      +
     19L  ASN*     3.0    29.7    +      -       -      -
     72L  PHE*     4.3     6.5    -      -       -      -
     81L  ASN*     2.9    32.9    +      -       +      -
     83L  SER*     2.8    40.2    +      -       -      -
    112L  GLU*     3.0    19.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 16 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12L  PHE*     3.1    49.2    +      -       +      +
     13L  LEU*     2.8     9.3    +      -       +      +
     15L  HIS*     1.3    84.3    +      -       -      +
     17L  VAL*     1.3    59.6    +      -       -      +
     18L  ALA      3.1     1.3    -      -       -      -
     19L  ASN*     3.0    22.7    +      -       -      +
     20L  LEU*     2.8    48.0    +      -       +      +
     60L  VAL*     4.4     9.4    -      -       +      -
    109L  LEU*     3.7     4.5    -      -       -      +
    112L  GLU*     3.0    26.3    +      -       -      +
    113L  TYR*     3.5    26.0    +      -       +      +
    132L  LEU*     6.0     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 17 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32J  TRP*     4.4     6.1    -      -       +      -
     13L  LEU      2.9    17.0    +      -       -      +
     14L  ASN*     3.0    21.0    +      -       -      +
     16L  GLN*     1.3    74.9    -      -       -      +
     18L  ALA*     1.3    62.8    +      -       -      +
     20L  LEU*     3.9     4.1    -      -       -      +
     21L  ASN*     2.8    43.5    +      -       -      +
     57L  MET*     4.3    12.3    -      -       -      +
     60L  VAL*     3.9    17.0    -      -       +      +
     61L  ALA*     4.0    22.2    -      -       +      +
     64L  LEU*     5.0     1.6    -      -       +      -
     71L  PRO*     4.5     2.9    -      -       +      -
     72L  PHE*     3.9    12.3    -      -       +      +
     78L  PHE*     3.8    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 18 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14L  ASN      3.1    10.0    +      -       -      +
     15L  HIS      3.4     9.0    -      -       -      +
     16L  GLN      3.1     0.4    -      -       -      -
     17L  VAL*     1.3    78.3    -      -       -      +
     19L  ASN*     1.3    63.9    +      -       -      +
     21L  ASN*     3.1    12.0    +      -       -      +
     22L  VAL*     3.1    16.5    +      -       -      +
     72L  PHE*     4.3     4.0    -      -       +      -
     78L  PHE*     3.7    39.5    -      -       -      +
     81L  ASN*     4.0    12.8    -      -       +      -
     82L  ALA*     3.7    14.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 19 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15L  HIS*     3.0    15.8    +      -       -      -
     16L  GLN*     3.0    25.7    +      -       -      +
     18L  ALA*     1.3    76.5    -      -       -      +
     20L  LEU*     1.3    58.9    +      -       -      +
     22L  VAL*     3.0     3.6    +      -       -      +
     23L  PHE*     2.7    31.5    +      -       -      +
     82L  ALA*     3.5     4.3    -      -       -      -
     83L  SER*     2.7    36.1    +      -       -      -
     84L  VAL*     3.0    22.8    +      -       +      +
    108L  LEU*     4.2     0.4    -      -       -      +
    109L  LEU*     4.1    10.2    -      -       +      +
    112L  GLU*     2.9    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 20 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16L  GLN*     2.8    31.2    +      -       +      +
     19L  ASN*     1.3    73.3    -      -       -      +
     21L  ASN*     1.3    63.6    +      -       -      +
     23L  PHE*     3.2     5.4    +      -       +      +
     24L  THR*     2.9    27.6    +      -       -      -
     53L  PHE*     4.2    29.7    -      -       +      +
     56L  GLN*     4.3     3.4    -      -       +      +
     57L  MET*     3.5    45.3    -      -       +      +
     60L  VAL*     4.1    13.9    -      -       +      -
    109L  LEU*     4.3    20.4    -      -       +      -
    113L  TYR*     3.5    27.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 21 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25J  VAL*     4.6     8.7    -      -       -      +
     28J  HIS*     5.5     0.9    -      -       -      -
     50J  TYR*     5.5     1.0    +      -       -      -
     75J  LEU*     4.0     3.8    -      -       +      +
     17L  VAL*     2.8    30.0    +      -       -      +
     18L  ALA      3.1     2.9    +      -       -      +
     20L  LEU*     1.3    78.5    -      -       -      +
     22L  VAL*     1.3    63.0    +      -       -      +
     24L  THR*     3.3    23.8    -      -       -      +
     25L  VAL*     3.5    13.3    -      -       -      +
     57L  MET*     3.4    37.2    -      -       -      +
     78L  PHE*     3.2    50.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 22 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75J  LEU*     4.1    23.5    -      -       +      +
     18L  ALA      3.1    13.2    +      -       -      +
     19L  ASN      3.0     6.8    +      -       -      +
     21L  ASN*     1.3    78.0    -      -       -      +
     23L  PHE*     1.3    64.9    +      -       -      +
     25L  VAL*     3.4     4.7    +      -       -      +
     26L  LYS*     3.0    20.1    +      -       -      +
     78L  PHE      4.7     3.8    -      -       -      +
     79L  LEU*     5.0     6.5    -      -       +      -
     82L  ALA*     3.5    21.1    -      -       +      -
     84L  VAL*     3.7    31.9    -      -       +      +
     85L  GLU      4.5     0.4    -      -       -      +
     86L  GLU*     3.9    31.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 23 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19L  ASN      2.7    20.8    +      -       -      +
     20L  LEU*     3.7     7.6    -      -       +      +
     22L  VAL*     1.3    73.4    -      -       -      +
     24L  THR*     1.3    57.3    +      -       -      +
     26L  LYS*     2.9    14.9    +      -       +      +
     27L  ILE*     2.8    50.0    +      -       +      +
     49L  LEU*     5.2     0.9    -      -       +      -
     53L  PHE*     3.7    45.1    -      +       +      -
     84L  VAL*     4.3     4.9    -      -       +      +
    102L  LEU*     3.4    35.7    -      -       +      -
    105L  THR*     3.4    31.6    -      -       +      -
    106L  LEU*     3.8    14.6    -      -       +      -
    109L  LEU*     3.6    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 24 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50J  TYR*     5.8     3.1    -      -       -      +
     20L  LEU      2.9    14.5    +      -       -      +
     21L  ASN*     3.3    23.1    -      -       -      +
     22L  VAL      3.2     0.2    -      -       -      -
     23L  PHE*     1.3    77.6    -      -       -      +
     25L  VAL*     1.3    70.2    +      -       +      +
     27L  ILE*     3.2    10.9    +      -       -      +
     28L  HIS      3.2    16.3    +      -       -      -
     50L  TYR*     3.4    53.1    +      -       +      +
     53L  PHE*     4.8     3.4    -      -       -      -
     54L  GLY*     4.3    12.6    +      -       -      -
     57L  MET*     6.0     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 25 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21J  ASN*     4.5     7.6    -      -       -      +
     73J  SER*     3.6    22.8    -      -       -      +
     74J  THR*     3.8     7.4    -      -       -      +
     75J  LEU*     3.5    21.8    -      -       +      -
     78J  PHE*     3.5    34.3    -      -       +      -
     21L  ASN      3.5    14.1    -      -       -      +
     22L  VAL      3.4     3.7    +      -       -      +
     24L  THR*     1.3    82.1    -      -       +      +
     26L  LYS*     1.3    55.8    +      -       -      +
     28L  HIS*     3.1    12.3    +      -       +      +
     29L  GLN*     2.9    26.0    +      -       -      +
     32L  TRP*     5.9     0.2    -      -       +      -
     50L  TYR*     6.1     0.4    -      -       +      +
     86L  GLU*     4.9     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 26 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73J  SER      5.3     1.3    -      -       -      -
     22L  VAL*     3.0    12.2    +      -       +      +
     23L  PHE*     2.9    20.5    +      -       +      +
     25L  VAL*     1.3    76.6    -      -       -      +
     27L  ILE*     1.3    64.0    +      -       -      +
     29L  GLN*     3.1    26.4    +      -       -      +
     30L  ILE*     3.1    25.2    +      -       +      +
     84L  VAL*     4.3     9.6    -      -       -      -
     85L  GLU      2.8    29.6    +      -       -      -
     86L  GLU*     4.1    13.1    -      -       +      +
     87L  ALA      4.9     1.8    -      -       -      +
    101L  ASP*     3.2    38.2    +      -       -      +
    102L  LEU*     5.2     0.2    -      -       -      -
    105L  THR*     3.4    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 27 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  PHE*     2.8    56.0    +      -       +      +
     24L  THR*     3.2    14.6    +      -       -      +
     26L  LYS*     1.3    76.1    -      -       -      +
     28L  HIS*     1.3    63.1    +      -       -      +
     30L  ILE*     3.4     9.6    +      -       -      +
     31L  HIS*     3.0    24.4    +      -       +      +
     46L  MET*     3.3    38.8    -      -       +      +
     49L  LEU*     3.9    32.1    -      -       +      +
     50L  TYR*     3.9    11.9    -      -       +      +
     53L  PHE*     4.4     3.8    -      -       +      -
    102L  LEU*     4.9     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 28 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21J  ASN*     5.3     2.0    -      -       -      -
     54J  GLY      5.3     1.4    +      -       -      -
     57J  MET*     3.5    30.0    -      -       +      +
     58J  ASP*     3.6    29.7    +      -       +      +
     24L  THR      3.2     6.3    +      -       -      +
     25L  VAL*     3.1    14.6    +      -       +      +
     27L  ILE*     1.3    77.1    -      -       -      +
     29L  GLN*     1.3    59.0    +      -       -      +
     31L  HIS*     3.3    12.8    -      +       -      +
     32L  TRP*     2.8    55.3    +      +       +      -
     47L  ASP*     4.8     5.1    +      -       -      -
     50L  TYR*     3.0    52.9    +      +       -      +
----------------------------------------------------------
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Residues in contact with GLN 29 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73J  SER*     3.0    45.5    +      -       -      +
     74J  THR*     4.1     0.7    -      -       -      +
     25L  VAL      2.9    13.4    +      -       -      +
     26L  LYS*     3.1    21.6    +      -       -      +
     28L  HIS*     1.3    76.9    -      -       -      +
     30L  ILE*     1.3    62.6    +      -       -      +
     32L  TRP*     4.2     3.5    -      -       -      -
     33L  TYR*     2.8    44.1    +      -       +      +
     87L  ALA      3.0    28.5    +      -       -      +
     89L  TYR*     3.9    17.7    +      -       +      -
     93L  LYS*     4.4    16.8    -      -       -      +
     98L  LEU*     5.4     1.1    -      -       +      +
    101L  ASP*     4.6     8.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 30 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26L  LYS*     3.1    26.5    +      -       +      +
     27L  ILE*     3.7     9.4    -      -       -      +
     29L  GLN*     1.3    84.4    -      -       +      +
     31L  HIS*     1.3    59.7    +      -       -      +
     33L  TYR*     5.1     0.2    -      -       -      -
     34L  MET*     2.9    50.7    +      -       +      +
     46L  MET*     3.9     8.7    -      -       -      -
     98L  LEU*     3.8    47.1    -      -       +      +
     99L  MET*     3.7    17.9    -      -       +      -
    101L  ASP*     5.1     3.1    -      -       +      +
    102L  LEU*     4.1    27.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 31 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  TRP*     4.8     0.2    -      -       -      -
    157G   FE      2.4    29.5    -      -       -      -
     58J  ASP*     3.6     6.5    -      -       -      -
     62J  GLU*     2.9     3.0    +      -       -      -
     27L  ILE*     3.0    18.8    +      -       +      +
     28L  HIS*     3.3    13.7    -      -       -      +
     30L  ILE*     1.3    80.5    -      -       -      +
     32L  TRP*     1.3    85.1    +      +       -      +
     34L  MET*     3.8     9.9    -      -       -      +
     39L  PHE*     4.6     1.2    -      -       -      -
     43L  HIS*     2.9    71.1    +      +       -      -
     46L  MET*     3.7    18.3    -      -       +      +
     47L  ASP*     3.2    27.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 32 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  TRP*     4.2     9.7    +      -       -      -
     17J  VAL*     4.4     5.8    -      -       +      -
     21J  ASN*     4.9     2.0    -      -       -      -
     57J  MET*     3.8    25.6    -      -       +      -
     58J  ASP*     2.7    25.2    +      -       -      -
     61J  ALA*     3.5    24.4    -      -       +      +
     62J  GLU*     4.0    16.5    +      -       +      +
     65J  LEU*     3.7    33.2    -      -       +      +
     71J  PRO*     3.8    22.0    -      -       +      -
     72J  PHE      3.5    20.9    -      -       -      -
     73J  SER*     4.0    16.2    -      -       -      -
     78J  PHE*     4.9     3.8    -      +       -      -
     25L  VAL*     5.5     0.7    -      -       +      -
     28L  HIS*     2.8    46.4    +      +       +      +
     29L  GLN*     3.8     2.2    -      -       -      +
     31L  HIS*     1.3    93.3    -      +       -      +
     33L  TYR*     1.3    64.5    +      +       +      +
     34L  MET      3.5     3.5    +      -       -      +
     39L  PHE*     5.3     0.2    -      -       -      -
     43L  HIS*     5.4     0.4    -      +       -      -
----------------------------------------------------------
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Residues in contact with TYR 33 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65J  LEU*     4.7     5.4    -      -       +      -
     70J  SER*     3.1    25.0    +      -       -      -
     71J  PRO*     2.5    48.7    +      -       +      -
     73J  SER*     3.5    23.5    +      -       -      -
     29L  GLN*     2.8    30.3    +      -       +      +
     30L  ILE*     4.6     1.6    -      -       -      +
     32L  TRP*     1.3    81.9    -      -       +      +
     34L  MET*     1.3    68.2    +      -       -      +
     35L  ARG*     3.5    13.0    +      -       -      +
     89L  TYR*     3.3    70.3    +      +       +      +
     98L  LEU*     4.7     2.6    -      -       +      +
----------------------------------------------------------
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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