Contacts of the helix formed by residues 5 - 33 (chain C) in PDB entry 4G7S


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with PRO 5 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  PHE*     3.8    22.7    -      -       +      -
    318A  ALA*     4.8     1.3    -      -       +      -
    321A  GLU*     3.1    20.9    -      -       -      +
     10B  ALA*     3.8     8.7    -      -       +      +
     11B  ILE*     4.0    27.4    -      -       +      -
     14B  TYR*     3.6    26.0    -      -       +      -
      4C  LYS*     1.3    85.1    -      -       +      +
      6C  LYS*     1.3    56.6    +      -       -      +
      8C  ALA*     3.3     9.6    +      -       +      -
      9C  LEU*     2.9    30.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 6 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321A  GLU*     3.4     3.1    +      -       -      +
    325A  ARG*     3.7     7.1    -      -       -      +
    331A  GLY*     3.0    33.4    +      -       -      -
    332A  LEU*     3.5    29.8    -      -       +      +
      4C  LYS*     2.8    50.3    +      -       +      +
      5C  PRO*     1.3    71.6    -      -       -      +
      7C  GLY*     1.3    56.9    +      -       -      +
      9C  LEU*     3.5    10.7    +      -       -      +
     10C  ALA      2.9    23.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 7 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321A  GLU*     2.7    22.9    +      -       -      -
    325A  ARG*     4.2     1.0    -      -       -      +
    332A  LEU*     4.3     5.6    -      -       -      +
    335A  TRP*     3.4    33.7    -      -       -      -
      6C  LYS*     1.3    70.3    -      -       -      +
      8C  ALA*     1.3    63.4    +      -       -      +
     10C  ALA*     3.1     6.9    +      -       -      +
     11C  VAL*     3.0    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 8 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  PHE*     4.1    19.1    -      -       +      +
    317A  ALA*     3.9    14.0    -      -       +      +
    318A  ALA*     3.6    40.4    -      -       +      +
    321A  GLU*     2.9    14.9    +      -       -      +
      5C  PRO*     3.3     7.2    +      -       +      +
      7C  GLY*     1.3    71.5    -      -       -      +
      9C  LEU*     1.3    56.8    +      -       -      +
     11C  VAL*     3.3     4.2    +      -       -      +
     12C  ILE*     3.0    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 9 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  PHE*     4.0    20.0    -      -       +      -
     14B  TYR*     3.6    37.5    -      -       +      -
    204B  OLC      3.8    30.1    -      -       +      -
      4C  LYS*     4.3    13.2    -      -       +      +
      5C  PRO*     2.9    29.8    +      -       +      +
      6C  LYS*     3.7     8.7    -      -       -      +
      8C  ALA*     1.3    68.5    -      -       -      +
     10C  ALA*     1.3    66.0    +      -       -      +
     12C  ILE*     3.5    10.5    +      -       +      +
     13C  LEU*     2.9    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 10 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332A  LEU*     4.4    25.1    -      -       +      +
    333A  PHE*     5.2     6.1    -      -       +      -
    335A  TRP*     5.8     1.3    -      -       +      -
      6C  LYS      2.9    17.4    +      -       -      +
      7C  GLY*     3.1    10.0    +      -       -      +
      9C  LEU*     1.3    72.1    -      -       -      +
     11C  VAL*     1.3    64.8    +      -       +      +
     13C  LEU*     3.2    10.8    +      -       +      +
     14C  VAL*     3.0    28.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 11 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  ALA*     4.8     2.7    -      -       +      +
    317A  ALA*     3.9    19.1    -      -       +      -
    335A  TRP*     4.2     9.4    -      -       +      -
    357A  ILE*     4.6     8.1    -      -       +      +
    603A  HAS      3.8    63.7    -      -       +      -
      7C  GLY      3.0    16.6    +      -       -      +
      8C  ALA      3.5     7.6    -      -       -      +
     10C  ALA*     1.3    74.7    -      -       +      +
     12C  ILE*     1.4    61.3    +      -       +      +
     14C  VAL*     3.0    23.7    +      -       -      +
     15C  LEU*     3.0    13.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 12 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  ALA*     4.5     3.6    -      -       +      +
    314A  PHE*     3.9    33.2    -      -       +      +
     18B  TRP*     3.3    58.5    -      -       +      +
    204B  OLC      3.6    28.9    -      -       +      -
      8C  ALA      3.0    20.4    +      -       -      +
      9C  LEU*     3.7    17.7    -      -       +      +
     11C  VAL*     1.4    74.0    -      -       +      +
     13C  LEU*     1.3    63.6    +      -       +      +
     15C  LEU*     3.6    11.6    -      -       +      +
     16C  THR*     2.8    34.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 13 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204B  OLC      5.6     6.1    -      -       +      -
      9C  LEU      2.9    15.4    +      -       -      +
     10C  ALA*     3.3    13.9    -      -       -      +
     12C  ILE*     1.3    77.4    -      -       +      +
     14C  VAL*     1.3    75.5    +      -       +      +
     16C  THR*     3.2     6.8    +      -       +      -
     17C  LEU*     2.9    57.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 14 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357A  ILE*     4.5     8.3    -      -       +      -
     10C  ALA*     3.0    19.3    +      -       +      +
     11C  VAL*     3.5     8.7    -      -       -      +
     13C  LEU*     1.3    86.2    -      -       +      +
     15C  LEU*     1.3    55.5    +      -       -      +
     17C  LEU*     3.4     5.8    +      -       +      +
     18C  THR*     2.8    38.0    +      -       -      +
    102C  OLC      3.5    35.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 15 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  LEU*     4.1     8.1    -      -       +      -
    313A  ALA*     3.6    30.5    -      -       +      -
    357A  ILE*     3.8    30.3    -      -       +      +
    603A  HAS      4.1    31.9    -      -       +      -
     18B  TRP*     3.9    22.9    -      -       +      -
     11C  VAL*     3.0    12.9    +      -       +      +
     12C  ILE*     3.6    10.1    -      -       +      +
     14C  VAL*     1.3    75.2    -      -       -      +
     16C  THR*     1.3    59.7    +      -       -      +
     18C  THR*     3.3     2.3    +      -       -      -
     19C  ILE*     2.8    55.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 16 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  TRP*     3.2    22.3    -      -       -      -
     21B  PHE*     3.7    27.7    -      -       +      -
     25B  MET*     4.2     5.6    -      -       -      +
    204B  OLC      4.4     5.2    -      -       +      +
     12C  ILE      2.8    25.9    +      -       -      -
     13C  LEU*     3.6     8.7    -      -       +      -
     15C  LEU*     1.3    73.2    -      -       -      +
     17C  LEU*     1.3    65.9    +      -       +      +
     19C  ILE*     3.4     9.9    +      -       -      +
     20C  LEU*     2.9    48.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 17 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     2.9    54.0    +      -       +      +
     14C  VAL*     3.8     6.1    -      -       +      +
     16C  THR*     1.3    85.9    -      -       +      +
     18C  THR*     1.4    58.5    +      -       -      +
     20C  LEU*     3.2    11.5    +      -       +      +
     21C  VAL*     2.8    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 18 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357A  ILE*     3.6    11.9    -      -       +      +
    358A  PRO*     3.7    21.5    -      -       +      -
    361A  ALA*     3.7     5.8    -      -       +      -
     14C  VAL*     2.8    23.4    +      -       -      +
     15C  LEU      3.6     3.4    -      -       -      -
     17C  LEU*     1.4    73.1    -      -       -      +
     19C  ILE*     1.3    66.0    +      -       -      +
     21C  VAL*     3.3     4.5    +      -       -      -
     22C  PHE*     2.9    53.3    +      -       +      -
    102C  OLC      3.6    33.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 19 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  LEU*     3.9    17.3    -      -       +      -
    361A  ALA*     3.7    25.7    -      -       +      +
    364A  ILE*     4.0    22.9    -      -       +      -
    603A  HAS      4.6     0.2    -      -       +      -
     18B  TRP*     5.4     0.4    -      -       +      -
     25B  MET*     3.9    25.4    -      -       +      -
     29B  PHE*     3.6    31.0    -      -       +      -
     15C  LEU*     2.8    47.4    +      -       +      +
     16C  THR*     3.8     4.3    -      -       -      +
     18C  THR*     1.3    72.3    -      -       -      +
     20C  LEU*     1.3    57.4    +      -       -      +
     22C  PHE*     3.7     1.4    -      -       -      +
     23C  TRP*     2.8    34.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 20 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21B  PHE*     5.5     3.1    -      -       +      -
     25B  MET*     3.7    26.2    -      -       +      -
     29B  PHE*     3.8    20.0    -      -       +      -
     16C  THR*     2.9    37.7    +      -       +      +
     17C  LEU*     3.7    12.8    -      -       +      +
     19C  ILE*     1.3    76.0    -      -       -      +
     21C  VAL*     1.3    66.3    +      -       +      +
     23C  TRP*     4.6     1.8    -      -       -      -
     24C  LEU*     3.0    48.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 21 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  LEU*     2.8    27.4    +      -       +      +
     18C  THR      3.9     3.1    -      -       -      +
     20C  LEU*     1.3    76.2    -      -       +      +
     22C  PHE*     1.3    61.8    +      -       -      +
     24C  LEU*     5.2     0.9    -      -       -      -
     25C  GLY*     2.9    23.0    +      -       -      +
    101C  OLC      3.8    14.8    -      -       +      +
    102C  OLC      3.9    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 22 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    358A  PRO*     3.5    32.3    -      -       +      -
    361A  ALA*     3.7     8.1    -      -       +      +
    362A  GLY*     3.4    19.7    -      -       -      -
    365A  VAL*     3.8     8.5    -      -       +      -
    380A  TRP*     3.7    17.9    -      +       -      -
    440A  HIS*     3.8    22.4    -      +       -      -
     18C  THR*     2.9    45.3    +      -       +      +
     19C  ILE      3.7     3.4    -      -       -      +
     21C  VAL*     1.3    77.9    -      -       -      +
     23C  TRP*     1.3    58.7    +      -       -      +
     25C  GLY*     3.8     0.2    -      -       -      -
     26C  VAL*     3.0    35.5    +      -       -      +
    101C  OLC      3.9    44.0    -      -       +      +
    102C  OLC      4.1    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 23 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364A  ILE*     3.8    17.7    +      -       +      -
    365A  VAL*     3.8    15.5    -      -       +      -
    368A  SER*     2.8    27.0    +      -       -      -
    371A  LEU*     3.5    14.1    -      -       +      +
     29B  PHE*     3.6    59.9    -      +       +      -
     32B  LEU*     3.6    37.5    -      -       +      -
     33B  ILE*     3.9     8.5    -      -       +      -
     19C  ILE*     2.8    22.9    +      -       +      +
     20C  LEU      4.1     1.3    -      -       -      +
     22C  PHE*     1.3    73.5    -      -       -      +
     24C  LEU*     1.3    71.5    +      -       +      +
     26C  VAL*     3.2     3.5    +      -       -      +
     27C  TYR*     2.8    64.1    +      +       +      +
----------------------------------------------------------
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Residues in contact with LEU 24 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  PHE*     5.0     5.2    -      -       +      -
     32B  LEU*     4.5    12.1    -      -       +      -
     20C  LEU*     3.0    40.2    +      -       +      +
     21C  VAL*     5.2     0.9    -      -       -      -
     23C  TRP*     1.3    97.3    -      -       +      +
     25C  GLY*     1.3    67.1    +      -       -      +
     27C  TYR*     3.7     9.1    -      -       +      +
     28C  ALA*     2.9    23.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 25 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21C  VAL*     2.9    21.0    +      -       -      +
     24C  LEU*     1.3    77.1    -      -       -      +
     26C  VAL*     1.3    60.8    +      -       -      +
     28C  ALA*     3.2     8.8    +      -       -      +
     29C  VAL*     3.0    23.7    +      -       -      +
    101C  OLC      3.8    26.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 26 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365A  VAL*     3.8    26.5    -      -       +      -
    371A  LEU*     4.0    14.8    -      -       +      +
    374A  VAL*     3.8    29.2    -      -       +      -
    375A  VAL*     4.7     2.0    -      -       +      -
    380A  TRP*     3.8    30.3    -      -       +      -
    444A  LEU*     4.6     7.0    -      -       +      -
     22C  PHE      3.0    23.8    +      -       -      +
     23C  TRP      4.0     2.2    -      -       -      +
     25C  GLY*     1.3    73.0    -      -       -      +
     27C  TYR*     1.3    53.3    +      -       -      +
     29C  VAL*     3.1     6.1    +      -       -      -
     30C  PHE*     2.7    33.6    +      -       -      +
    101C  OLC      4.4     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 27 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371A  LEU*     3.6    22.1    -      -       +      +
     32B  LEU*     2.9    43.1    +      -       +      +
     33B  ILE*     5.1     0.9    -      -       +      -
     35B  TYR*     3.5    20.4    -      -       -      -
     36B  THR*     3.5    20.1    -      -       +      +
    202B  OLC      3.6    13.6    +      -       -      -
     23C  TRP*     2.8    50.0    +      +       +      +
     24C  LEU*     3.7    11.9    -      -       +      +
     26C  VAL*     1.3    77.3    -      -       -      +
     28C  ALA*     1.3    62.2    +      -       -      +
     30C  PHE*     3.4     3.3    +      -       -      +
     31C  PHE*     3.2    47.9    +      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 28 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  LEU      2.9    14.2    +      -       -      +
     25C  GLY*     3.4     9.4    -      -       -      +
     27C  TYR*     1.3    76.0    -      -       -      +
     29C  VAL*     1.3    58.1    -      -       -      +
     31C  PHE*     3.3     6.0    +      -       -      +
     32C  ALA*     2.9    30.3    +      -       -      +
    101C  OLC      4.0    23.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 29 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374A  VAL*     3.7    15.3    -      -       +      -
    444A  LEU*     4.7     7.6    -      -       +      -
    203B  OLC      4.1    13.7    -      -       +      -
     25C  GLY      3.0    18.4    +      -       -      +
     26C  VAL*     3.1    11.4    +      -       -      +
     28C  ALA*     1.3    73.4    -      -       -      +
     30C  PHE*     1.3    64.4    +      -       -      +
     32C  ALA*     3.1     2.9    +      -       -      +
     33C  ARG*     2.9    60.3    +      -       -      +
    101C  OLC      3.6    41.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 30 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370A  THR*     3.3    46.9    -      -       +      -
    371A  LEU*     4.0    11.9    -      -       +      -
    373A  TYR*     4.7     4.5    -      +       +      -
    374A  VAL*     3.7    15.6    -      -       +      +
     36B  THR*     3.9    18.2    -      -       +      -
     41B  THR*     3.2    48.5    -      -       +      -
    122B  ASN*     2.7    54.9    +      -       +      -
     26C  VAL      2.7    19.7    +      -       -      +
     27C  TYR*     3.5     5.4    -      +       -      +
     29C  VAL*     1.3    73.3    -      -       -      +
     31C  PHE*     1.3    79.4    +      +       -      +
     33C  ARG      3.3     1.6    +      -       -      -
     34C  GLY*     3.2     5.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 31 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  TYR*     3.6    28.3    -      +       -      -
     36B  THR*     3.9    16.6    -      -       +      -
     39B  THR*     4.4     4.3    -      -       +      -
     41B  THR*     3.8    31.9    -      -       +      -
    202B  OLC      3.7    25.8    -      -       -      -
     27C  TYR*     3.2    56.5    +      +       -      +
     28C  ALA*     4.0     4.9    -      -       -      +
     29C  VAL      3.3     0.2    -      -       -      -
     30C  PHE*     1.3    80.9    -      +       -      +
     32C  ALA*     1.3    65.9    +      -       -      +
     34C  GLY*     3.1    15.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 32 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141B  ARG*     5.5     3.5    +      -       -      -
    203B  OLC      4.7     9.4    -      -       +      +
     28C  ALA      2.9    17.9    +      -       -      +
     29C  VAL      3.1     5.6    +      -       -      +
     31C  PHE*     1.3    77.4    -      -       -      +
     33C  ARG*     1.3    59.8    +      -       -      +
     34C  GLY      3.2     3.9    +      -       -      +
    101C  OLC      3.7    36.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 33 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374A  VAL*     3.5    28.3    +      -       -      +
    444A  LEU*     2.8    32.5    +      -       -      +
    446A  ASN*     3.3    30.8    +      -       -      +
    117B  HIS*     4.7     1.6    +      -       -      -
    120B  GLY*     3.8     9.5    -      -       -      +
    121B  THR*     3.4    27.7    +      -       -      +
    122B  ASN*     3.3    33.1    +      -       -      +
    137B  TYR*     2.6    24.4    +      -       -      -
    203B  OLC      3.4    42.4    -      -       +      +
     29C  VAL*     2.9    31.9    +      -       -      +
     30C  PHE      3.3     0.2    +      -       -      -
     31C  PHE      3.1     0.2    -      -       -      -
     32C  ALA*     1.3    75.6    -      -       -      +
     34C  GLY*     1.3    57.9    +      -       -      +
----------------------------------------------------------
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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