Contacts of the helix formed by residues 1 - 26 (chain H) in PDB entry 2ZT9


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 MET 1 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  VAL*     3.8    26.5    -      -       +      -
     41C  LEU*     3.6    50.6    -      -       +      +
     44C  THR*     3.8    28.9    -      -       +      -
     45C  VAL      5.4     0.2    -      -       -      +
     46C  PHE*     4.8     4.7    -      -       +      -
      2H  ALA*     1.3    66.7    +      -       -      +
      3H  ILE*     3.4     4.2    -      -       -      +
      4H  LEU*     3.5    20.7    +      -       -      +
      5H  THR*     3.5    14.4    +      -       -      -
     30H  OPC      3.5    51.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 2 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2E  LEU*     4.2    24.2    -      -       +      +
      1H  MET*     1.3    75.5    -      -       -      +
      3H  ILE*     1.3    58.3    +      -       -      +
      5H  THR*     3.0     7.0    +      -       -      +
      6H  LEU*     2.9    38.4    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     41C  LEU*     4.1    35.9    -      -       +      -
    252C  ALA*     4.4    15.9    -      -       +      +
    255C  VAL*     3.4    28.3    -      -       +      +
    256C  GLY*     4.4    17.0    -      -       -      +
    259C  ILE*     4.9     7.6    -      -       +      -
      1H  MET      4.7     1.8    -      -       -      +
      2H  ALA*     1.3    78.5    -      -       -      +
      4H  LEU*     1.3    60.7    +      -       +      +
      6H  LEU*     3.8    15.6    -      -       +      +
      7H  GLY      2.9    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 4 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  LEU*     5.1     2.8    -      -       +      +
     39C  SER*     3.4    40.8    -      -       -      +
     40C  VAL*     3.9     3.4    -      -       -      +
     41C  LEU*     4.2    20.6    -      -       +      +
    250C  GLN*     3.7    33.9    -      -       +      -
    255C  VAL*     4.7     6.1    -      -       +      -
      1H  MET*     3.5    31.8    +      -       -      +
      2H  ALA      3.2     1.2    -      -       -      -
      3H  ILE*     1.3    83.8    -      -       +      +
      5H  THR*     1.3    62.8    +      -       -      +
      7H  GLY*     3.6     1.5    +      -       -      -
      8H  TRP*     3.3    29.7    +      -       -      -
     30H  OPC      4.2    19.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 5 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2E  LEU*     4.4    17.0    -      -       +      +
      3E  ALA*     4.0    37.9    -      -       +      +
      6E  ALA*     6.0     0.2    -      -       +      -
      1H  MET      3.5     9.7    +      -       -      -
      2H  ALA      3.0     9.6    +      -       -      -
      4H  LEU*     1.3    76.2    -      -       -      +
      6H  LEU*     1.3    65.2    +      -       +      +
      7H  GLY      3.1     1.7    +      -       -      -
      8H  TRP*     3.3     6.4    +      -       -      +
      9H  VAL*     3.0    27.2    +      -       +      +
     30H  OPC      3.8    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 6 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259C  ILE*     3.3    19.9    -      -       +      +
      2E  LEU*     5.3    11.0    -      -       +      -
      6E  ALA*     3.7    29.2    -      -       +      -
     10E  PHE*     5.5     4.2    -      -       +      -
      2H  ALA*     2.9    28.6    +      -       +      +
      3H  ILE*     3.4    15.7    +      -       +      +
      5H  THR*     1.3    75.6    -      -       -      +
      7H  GLY*     1.3    56.4    +      -       -      +
      9H  VAL*     3.3     8.7    +      -       +      +
     10H  SER*     3.0    23.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 7 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  LEU*     3.5    19.4    -      -       -      +
    255C  VAL*     3.6    20.4    -      -       -      -
    258C  LEU*     4.6     1.4    -      -       -      +
    259C  ILE*     3.8     5.8    -      -       -      +
      3H  ILE      2.9    16.6    +      -       -      -
      4H  LEU      3.6     1.8    +      -       -      -
      5H  THR      3.1     0.6    -      -       -      -
      6H  LEU*     1.3    76.0    -      -       -      +
      8H  TRP*     1.3    60.8    +      -       -      +
     10H  SER*     2.6    22.1    +      -       -      -
     11H  LEU      3.5     3.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 8 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54B  LEU*     4.5     2.9    -      -       +      -
     57B  LEU*     3.5    43.2    -      -       +      +
     58B  ASP*     4.3     5.8    -      -       +      -
     38C  GLN*     2.9    41.7    +      -       +      -
     39C  SER*     4.6     1.6    +      -       -      -
      5G  LEU*     3.5    28.9    -      -       +      -
      4H  LEU      3.3    21.7    +      -       -      +
      5H  THR      3.3     7.0    +      -       -      +
      7H  GLY*     1.3    71.6    -      -       -      +
      9H  VAL*     1.3    65.8    +      -       -      +
     11H  LEU*     3.2    36.5    +      -       +      +
     12H  LEU*     3.2    19.2    +      -       -      +
     30H  OPC      3.5    77.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 9 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3E  ALA*     3.9    33.9    -      -       +      +
      6E  ALA*     4.0    15.5    -      -       +      +
      7E  TYR*     3.8    29.8    -      -       +      +
     10E  PHE*     4.3     9.0    -      -       +      -
      5H  THR*     3.0    22.8    +      -       +      +
      6H  LEU*     3.4    13.0    -      -       +      +
      7H  GLY      3.2     0.2    -      -       -      -
      8H  TRP*     1.3    75.8    -      -       -      +
     10H  SER*     1.3    51.7    +      -       -      +
     12H  LEU*     3.1    11.6    +      -       +      +
     13H  VAL*     2.8    41.1    +      -       +      +
     30H  OPC      5.2     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 10 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  LEU*     4.4     8.3    -      -       -      +
    259C  ILE*     3.7    18.1    -      -       -      +
    262C  VAL*     3.7    29.3    -      -       -      +
     10E  PHE*     4.2    13.0    -      -       -      -
      6H  LEU      3.0    11.7    +      -       -      -
      7H  GLY*     2.6    21.4    +      -       -      -
      9H  VAL*     1.3    73.8    -      -       -      +
     11H  LEU*     1.3    60.6    +      -       -      +
     13H  VAL*     3.7     7.1    -      -       -      +
     14H  VAL*     2.9    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 11 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  CYS*     3.8    33.0    -      -       +      +
     53B  ALA*     3.8    17.0    -      -       +      +
     54B  LEU*     3.9    20.4    -      -       +      +
     57B  LEU*     4.2    10.5    -      -       +      -
      7H  GLY      3.5     0.4    +      -       -      -
      8H  TRP*     3.2    39.4    +      -       +      +
     10H  SER*     1.3    82.1    +      -       -      +
     12H  LEU*     1.3    65.3    +      -       +      +
     14H  VAL*     3.2     8.8    -      -       -      +
     15H  PHE*     3.1    21.5    +      -       -      +
     30H  OPC      3.8    35.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 12 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7E  TYR*     3.7    15.2    -      -       +      -
     11F  LEU*     4.4    14.8    -      -       +      -
     15F  LEU*     3.7    14.7    -      -       +      +
      8H  TRP      3.3    13.9    -      -       -      +
      9H  VAL*     3.1    11.3    +      -       +      +
     11H  LEU*     1.3    78.3    -      -       +      +
     13H  VAL*     1.3    60.9    +      -       -      +
     15H  PHE*     3.9     6.0    -      -       -      +
     16H  THR*     2.9    29.8    +      -       -      -
     30H  OPC      3.5    89.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 13 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266C  MET*     3.4    27.4    -      -       +      -
      7E  TYR*     3.8    25.8    -      -       +      +
     10E  PHE*     3.7    43.1    -      -       +      -
     11E  LEU*     3.8    19.3    -      -       +      +
     14E  PHE*     5.7     0.9    -      -       +      -
      9H  VAL*     2.8    21.4    +      -       +      +
     10H  SER*     3.8     4.7    -      -       -      +
     11H  LEU      3.2     0.4    -      -       -      -
     12H  LEU*     1.3    74.5    -      -       -      +
     14H  VAL*     1.3    52.9    +      -       -      +
     16H  THR*     3.2     2.6    +      -       -      -
     17H  TRP*     2.7    37.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 14 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  ALA*     4.0    29.4    -      -       +      +
     50B  CYS*     4.7     9.6    -      -       -      -
     53B  ALA*     5.1     0.2    -      -       +      -
    262C  VAL*     3.6    32.8    -      -       +      +
    265C  VAL*     4.3     9.0    -      -       +      -
    266C  MET*     4.0    15.7    -      -       +      -
    269C  GLN*     4.9     0.4    -      -       -      +
     10H  SER      2.9    20.7    +      -       -      +
     11H  LEU*     3.2    18.6    -      -       +      +
     13H  VAL*     1.3    68.6    -      -       -      +
     15H  PHE*     1.3    57.0    +      -       -      +
     17H  TRP*     3.9     4.4    -      -       -      +
     18H  SER*     2.7    45.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 15 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  CYS*     4.0    10.7    -      -       -      -
     12F  SER*     3.9    16.6    -      -       -      -
     15F  LEU*     4.0    25.6    -      -       +      -
     16F  ILE*     4.1    20.0    -      -       +      -
     13G  LEU*     3.9    24.9    -      -       +      -
    101G  BCR      3.6    33.0    -      -       +      -
     11H  LEU      3.1    17.7    +      -       -      +
     12H  LEU*     3.9     4.7    -      -       -      +
     14H  VAL*     1.3    78.8    -      -       -      +
     16H  THR*     1.3    61.4    +      -       -      +
     18H  SER*     3.3     3.7    +      -       -      -
     19H  ILE*     3.2    27.1    +      -       +      +
     30H  OPC      3.7    47.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 16 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7E  TYR*     2.8    27.9    +      -       -      +
     11E  LEU*     3.9    20.9    -      -       +      -
     15F  LEU*     3.5    18.8    +      -       -      +
     18F  VAL*     4.0     5.4    -      -       +      +
     19F  GLY*     3.5    31.1    -      -       -      +
     22F  LEU*     4.5     4.7    -      -       +      -
     12H  LEU      2.9    15.4    +      -       -      -
     13H  VAL      3.2     3.9    +      -       -      -
     15H  PHE*     1.3    76.8    -      -       -      +
     17H  TRP*     1.3    57.5    +      -       -      +
     19H  ILE*     3.2     3.4    +      -       -      +
     20H  ALA*     2.9    26.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 17 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266C  MET*     3.2    45.3    +      -       +      +
    269C  GLN*     3.3    24.7    -      -       -      -
    270C  VAL*     3.5    12.6    -      -       +      -
     11E  LEU*     4.0    18.2    -      -       +      -
     14E  PHE*     3.3    35.9    -      +       +      -
     15E  THR*     3.7    25.4    -      -       -      -
     18E  ALA*     4.0     8.1    -      -       +      -
     22F  LEU*     4.3    10.1    -      -       +      -
     26F  LEU*     5.3     4.0    -      -       +      -
     13H  VAL      2.7    20.9    +      -       -      +
     14H  VAL      3.9     2.7    -      -       -      +
     16H  THR*     1.3    74.8    -      -       -      +
     18H  SER*     1.3    56.6    +      -       -      +
     20H  ALA*     3.6     9.9    -      -       +      +
     21H  MET*     2.8    63.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 18 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  ILE*     4.5     0.6    -      -       -      +
     46B  GLY*     3.2    15.3    +      -       -      -
     50B  CYS*     5.7     0.2    -      -       -      -
    269C  GLN*     3.0    29.4    +      -       -      +
    101G  BCR      3.8    27.1    -      -       -      -
     14H  VAL*     2.7    27.6    +      -       -      +
     15H  PHE*     3.6     6.5    -      -       -      -
     17H  TRP*     1.3    71.3    -      -       -      +
     19H  ILE*     1.3    68.3    +      -       -      +
     21H  MET*     3.8     2.2    -      -       -      +
     22H  VAL*     3.1    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 19 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  ILE*     4.7     3.6    -      -       +      -
     16F  ILE*     3.5    36.3    -      -       +      +
     19F  GLY*     3.7     3.8    -      -       -      -
     20F  TRP*     3.6    29.2    -      -       +      +
    101G  BCR      3.6    53.6    -      -       +      -
     15H  PHE*     3.2    18.4    +      -       +      +
     16H  THR*     3.6     7.2    -      -       -      +
     18H  SER*     1.3    73.1    -      -       -      +
     20H  ALA*     1.3    69.3    +      -       -      +
     22H  VAL*     2.9    15.1    +      -       -      +
     23H  VAL*     3.0    20.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 20 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19F  GLY      3.3    20.8    +      -       -      +
     22F  LEU*     4.2    14.1    -      -       +      +
     23F  GLY*     3.7    13.8    -      -       -      +
     26F  LEU*     5.9     1.6    -      -       +      -
     16H  THR      2.9    18.3    +      -       -      +
     17H  TRP*     3.6    20.6    -      -       +      +
     19H  ILE*     1.3    73.4    -      -       -      +
     21H  MET*     1.3    55.9    +      -       -      +
     23H  VAL*     3.3     2.1    +      -       -      +
     24H  TRP*     2.7    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 21 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  ILE*     3.9    16.3    -      -       +      +
    269C  GLN*     3.6    24.7    -      -       +      +
    270C  VAL*     3.3    42.4    -      -       +      -
    273C  VAL*     3.3    19.7    -      -       +      +
     26F  LEU*     6.0     1.1    -      -       -      -
     17H  TRP*     2.8    46.9    +      -       +      +
     18H  SER*     3.8     5.2    -      -       -      +
     19H  ILE      3.1     0.2    -      -       -      -
     20H  ALA*     1.3    78.1    -      -       -      +
     22H  VAL*     1.3    58.3    +      -       -      +
     24H  TRP*     3.5    35.2    -      -       +      -
     25H  GLY*     2.9    23.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 22 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  ILE*     3.6    30.5    -      -       +      -
    303A  HEM      5.0     2.0    -      -       +      -
     39B  VAL*     4.8     8.6    -      -       +      +
     42B  ILE*     4.0    12.8    -      -       +      -
     43B  VAL*     3.8    27.6    -      -       +      -
    101G  BCR      4.1    11.0    -      -       +      -
     18H  SER      3.1    14.3    +      -       -      +
     19H  ILE      2.9     7.2    +      -       -      +
     21H  MET*     1.3    75.5    -      -       -      +
     23H  VAL*     1.3    60.1    +      -       -      +
     24H  TRP      3.3     0.2    +      -       -      -
     25H  GLY      3.3     0.5    +      -       -      -
     26H  ARG*     2.8    60.6    +      -       +      +
     29H  LEU*     5.1     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 23 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  ILE*     4.9     6.7    -      -       +      -
     20F  TRP*     4.2    17.9    -      -       +      +
     23F  GLY*     3.8    26.9    -      -       -      +
     24F  ALA*     3.9     4.3    -      -       -      +
     27F  LEU*     3.7     5.8    -      -       +      +
     19H  ILE*     3.0    27.4    +      -       +      +
     20H  ALA*     3.6     6.7    -      -       -      +
     22H  VAL*     1.3    76.5    -      -       -      +
     24H  TRP*     1.3    62.7    +      -       -      +
     27H  ASN*     3.0     4.3    +      -       -      -
     28H  GLY*     2.8    56.2    +      -       -      +
     29H  LEU      4.0    13.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 24 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270C  VAL*     4.4     2.7    -      -       +      -
    273C  VAL*     3.5    16.2    -      -       +      -
    274C  LEU*     3.5    31.2    -      -       +      -
    277C  LYS*     2.8    34.1    +      -       +      +
     18E  ALA*     4.0    21.8    -      -       +      -
     22E  LEU*     4.4    18.8    -      -       +      -
     23F  GLY*     4.3     7.6    -      -       -      +
     26F  LEU*     3.6    48.3    +      -       +      -
     27F  LEU*     3.6    26.6    -      -       +      +
     30F  GLN*     4.0    10.7    -      -       +      -
     20H  ALA      2.7    21.2    +      -       -      +
     21H  MET*     3.5    35.7    -      -       +      +
     23H  VAL*     1.3    77.1    -      -       -      +
     25H  GLY*     1.3    57.6    +      -       -      +
     27H  ASN      3.2     6.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 25 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  VAL*     5.1     3.8    -      -       -      -
     42B  ILE*     5.5     2.7    -      -       -      -
    273C  VAL*     3.6    22.6    -      -       -      +
    276C  LYS*     3.1    32.4    +      -       -      +
    277C  LYS*     3.8     7.9    +      -       -      -
     21H  MET      2.9    18.6    +      -       -      -
     22H  VAL      3.8     0.2    -      -       -      -
     24H  TRP*     1.3    76.9    -      -       -      +
     26H  ARG*     1.3    56.8    +      -       -      +
     27H  ASN*     3.4     4.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 26 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  VAL*     4.0    16.6    -      -       -      +
     30A  VAL      3.3    17.4    +      -       -      -
     31A  ASN      3.9     7.7    -      -       -      -
     35A  CYS*     5.5     0.4    -      -       -      -
    303A  HEM      3.6    30.1    -      -       -      +
     29B  GLU*     4.5    10.1    +      -       -      +
     35B  ASP*     3.0    33.8    +      -       -      +
     39B  VAL*     4.1     8.0    -      -       +      +
    276C  LYS*     3.6    15.0    -      -       -      +
     22H  VAL*     2.8    44.2    +      -       +      +
     25H  GLY*     1.3    72.8    -      -       -      +
     27H  ASN*     1.3    71.3    +      -       -      +
     28H  GLY      3.5     2.6    +      -       -      +
     29H  LEU*     3.3    38.8    -      -       +      +
----------------------------------------------------------
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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