Contacts of the helix formed by residues 62 - 90 (chain A) in PDB entry 6CMO


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 SER 62 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  GLY      3.2     0.8    -      -       -      -
     61A  TYR*     1.3   103.5    -      -       -      +
     63A  GLU*     1.3    61.0    +      -       -      +
     64A  GLU*     2.6    33.4    +      -       -      +
     65A  GLU*     3.2    15.6    +      -       -      +
     66A  CYS*     2.9    30.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  TYR      4.7     4.2    -      -       -      +
     62A  SER*     1.3    74.3    +      -       -      +
     64A  GLU*     1.3    67.6    +      -       -      +
     66A  CYS*     3.2    17.6    +      -       +      +
     67A  LYS*     2.9    42.8    +      -       -      +
    168A  ILE*     6.0     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  SER*     2.6    29.1    +      -       -      +
     63A  GLU*     1.3    80.6    +      -       -      +
     65A  GLU*     1.3    59.2    +      -       -      +
     67A  LYS*     3.1    19.1    +      -       +      +
     68A  GLN*     3.0    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  GLU      5.1     0.2    -      -       -      +
     59A  ALA*     3.2    26.6    -      -       -      +
     61A  TYR*     3.2    34.9    +      -       -      -
     62A  SER*     3.2    16.8    +      -       -      +
     64A  GLU*     1.3    75.1    -      -       -      +
     66A  CYS*     1.3    61.7    +      -       -      +
     68A  GLN*     3.1    21.6    +      -       +      +
     69A  TYR*     3.0    39.5    +      -       +      -
    174A  VAL*     4.8     2.3    -      -       -      +
    178A  ARG*     4.3    18.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  GLY*     4.3    13.5    -      -       -      -
     62A  SER      2.9    25.3    +      -       -      -
     63A  GLU*     3.3    21.5    -      -       +      +
     64A  GLU      3.2     0.6    -      -       -      -
     65A  GLU*     1.3    76.8    -      -       -      +
     67A  LYS*     1.3    56.1    +      -       +      +
     69A  TYR*     3.3    32.8    +      -       +      +
     70A  LYS*     2.9    41.9    +      -       -      +
    168A  ILE*     5.1    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  GLU*     2.9    33.6    +      -       -      +
     64A  GLU*     3.1    18.8    +      -       +      +
     66A  CYS*     1.3    77.2    -      -       +      +
     68A  GLN*     1.3    62.8    +      -       -      +
     70A  LYS*     3.2    11.8    +      -       +      +
     71A  ALA*     3.0    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  GLU      3.0    12.1    +      -       -      +
     65A  GLU*     3.2    25.9    -      -       +      +
     67A  LYS*     1.3    74.6    -      -       -      +
     69A  TYR*     1.3    58.8    +      -       +      +
     71A  ALA*     3.0    10.2    +      -       -      +
     72A  VAL*     2.9    38.9    +      -       +      +
    178A  ARG*     3.8    23.8    +      -       -      +
     96B  ARG*     4.7    15.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ALA      4.5    11.4    -      -       -      -
     60A  GLY*     4.4     7.0    -      -       -      -
     65A  GLU*     3.0    29.5    +      -       +      -
     66A  CYS*     3.3    36.1    -      -       -      +
     68A  GLN*     1.3    73.9    -      -       +      +
     70A  LYS*     1.3    91.5    +      -       -      +
     71A  ALA      3.3     0.2    -      -       -      -
     72A  VAL*     3.7    11.4    -      -       +      +
     73A  VAL*     2.9    43.1    +      -       +      +
    168A  ILE*     4.4     3.8    -      -       -      +
    169A  PRO*     3.9    30.7    +      -       +      +
    173A  ASP*     6.3     0.9    -      -       +      -
    174A  VAL*     3.6    43.5    -      -       +      +
    177A  THR*     6.0     3.1    -      -       +      +
    178A  ARG*     5.7     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  CYS*     2.9    39.0    +      -       -      +
     67A  LYS*     3.4    13.0    -      -       +      +
     68A  GLN      3.2     0.2    -      -       -      -
     69A  TYR*     1.3   105.0    +      -       -      +
     71A  ALA*     1.3    56.3    +      -       -      +
     73A  VAL*     4.3     2.4    -      -       -      +
     74A  TYR*     2.9    50.6    +      -       +      -
    118A  PHE*     5.3     8.3    -      -       +      -
    167A  TYR*     3.1    49.5    +      -       +      +
    168A  ILE*     5.0     0.4    -      -       -      +
    169A  PRO*     3.3    17.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  LYS      3.0    12.4    +      -       -      +
     68A  GLN*     3.4    10.1    -      -       -      +
     70A  LYS*     1.3    78.1    -      -       -      +
     72A  VAL*     1.3    54.8    +      -       +      +
     74A  TYR*     3.6     7.6    +      -       -      +
     75A  SER*     2.6    38.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  GLN*     2.9    33.3    +      -       +      +
     69A  TYR*     4.0     8.5    -      -       +      -
     71A  ALA*     1.3    79.1    -      -       +      +
     73A  VAL*     1.3    56.4    +      -       -      +
     75A  SER*     3.1     8.6    +      -       -      -
     76A  ASN*     2.9    46.0    +      -       -      +
    177A  THR*     3.7    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  TYR*     2.9    34.3    +      -       +      +
     70A  LYS*     4.3     3.1    -      -       -      +
     72A  VAL*     1.3    72.0    -      -       -      +
     74A  TYR*     1.3    63.7    +      -       +      +
     76A  ASN*     3.4     7.1    +      -       -      +
     77A  THR*     2.5    44.3    +      -       -      +
    155A  TYR*     4.9    15.8    -      -       +      +
    158A  ASP*     5.6     5.6    -      -       -      +
    159A  LEU*     5.7     4.7    -      -       +      -
    162A  ILE*     5.7     9.2    -      -       +      -
    173A  ASP*     5.4     8.3    -      -       +      +
    174A  VAL*     6.4     0.4    -      -       -      -
    177A  THR*     4.2    21.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  LYS*     2.9    30.1    +      -       +      +
     71A  ALA*     3.8     7.2    -      -       -      +
     73A  VAL*     1.3    80.5    -      -       +      +
     75A  SER*     1.3    58.2    +      -       -      +
     77A  THR*     4.1     2.9    -      -       -      -
     78A  ILE*     2.9    40.5    +      -       +      +
    117A  GLY      5.8     1.3    -      -       -      -
    118A  PHE*     3.3    42.5    -      +       -      -
    119A  MET*     3.8    45.9    -      -       +      +
    159A  LEU*     4.5    14.4    -      -       +      -
    162A  ILE*     4.6     4.8    -      -       +      +
    167A  TYR*     2.5    31.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ALA*     2.6    24.0    +      -       -      +
     72A  VAL*     3.1     9.7    +      -       -      -
     74A  TYR*     1.3    76.1    -      -       -      +
     76A  ASN*     1.3    53.0    +      -       -      +
     78A  ILE*     5.2     2.0    -      -       -      -
     79A  GLN*     2.7    48.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  VAL*     2.9    37.6    +      -       -      +
     73A  VAL*     3.9     5.1    -      -       -      +
     75A  SER*     1.3    75.2    -      -       -      +
     77A  THR*     1.3    53.1    +      -       -      +
     79A  GLN*     4.4    12.2    +      -       -      -
     80A  SER*     2.8    38.5    +      -       -      -
    149A  ASN*     4.5    13.1    -      -       -      +
    155A  TYR*     4.4    30.2    -      -       +      +
    177A  THR*     3.7    14.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  VAL*     2.5    31.5    +      -       -      +
     74A  TYR*     3.5     8.9    -      -       -      -
     75A  SER      3.2     0.2    -      -       -      -
     76A  ASN*     1.3    73.7    -      -       -      +
     78A  ILE*     1.3    66.8    +      -       +      +
     80A  SER*     2.3    25.3    +      -       -      +
     81A  ILE*     3.0    15.5    +      -       +      +
    119A  MET*     4.7     2.5    -      -       +      -
    127A  ILE*     3.9    19.5    -      -       +      -
    155A  TYR*     4.7    15.2    +      -       -      +
    156A  LEU*     5.3     5.1    -      -       +      +
    159A  LEU*     3.8    34.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  TYR*     2.9    20.5    +      -       +      +
     75A  SER*     4.5     1.8    -      -       -      +
     77A  THR*     1.3    79.0    -      -       +      +
     79A  GLN*     1.3    57.7    +      -       -      +
     81A  ILE*     3.3    14.0    -      -       +      +
     82A  ILE*     3.0    38.3    +      -       +      +
    109A  VAL*     5.2     9.6    -      -       +      +
    113A  ALA*     4.0    32.5    -      -       +      +
    119A  MET*     4.5    24.5    -      -       +      -
    123A  LEU*     4.8    17.3    -      -       +      -
    127A  ILE*     5.2     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  SER*     2.7    32.4    +      -       -      +
     76A  ASN*     4.3    12.1    +      -       -      +
     78A  ILE*     1.3    78.2    -      -       -      +
     80A  SER*     1.3    57.3    +      -       -      +
     82A  ILE*     3.4    10.8    -      -       +      +
     83A  ALA*     3.0    31.1    +      -       +      +
    140B  ALA      5.3     6.1    +      -       -      -
    173B  THR      5.7     4.0    -      -       -      +
    174B  GLY      4.4    12.0    +      -       -      +
    175B  GLN*     3.7    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  ASN      2.8    19.5    +      -       -      -
     77A  THR*     2.3    28.4    +      -       -      -
     79A  GLN*     1.3    77.8    -      -       -      +
     81A  ILE*     1.3    58.7    +      -       -      +
     83A  ALA*     3.1     7.8    +      -       -      +
     84A  ILE*     2.9    33.0    +      -       -      +
    149A  ASN*     6.6     0.4    -      -       -      -
    152A  ALA*     4.6    21.8    -      -       -      -
    155A  TYR*     5.2     3.8    -      -       -      +
    156A  LEU*     4.0    17.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  THR*     3.0    12.9    +      -       +      +
     78A  ILE*     3.3    24.0    -      -       +      +
     80A  SER*     1.3    81.1    +      -       -      +
     82A  ILE*     1.3    66.4    +      -       +      +
     84A  ILE*     3.1    20.0    +      -       +      +
     85A  ILE*     3.0    25.2    +      -       +      +
    109A  VAL*     5.6     8.5    -      -       +      -
    127A  ILE*     3.8    41.7    -      -       +      +
    130A  LEU*     5.3    15.0    -      -       +      -
    131A  TRP*     5.5     4.3    -      -       +      +
    136A  VAL*     5.5     3.1    -      -       +      -
    156A  LEU*     4.2    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  ILE*     3.0    36.4    +      -       +      +
     79A  GLN*     3.4    15.5    -      -       +      +
     81A  ILE*     1.3    81.0    -      -       +      +
     83A  ALA*     1.3    61.8    +      -       -      +
     85A  ILE*     3.3     9.1    -      -       +      +
     86A  ARG*     3.0    36.6    +      -       -      +
    109A  VAL*     5.2     9.9    -      -       +      +
    110A  LEU*     3.9    26.4    -      -       +      +
    113A  ALA*     4.8     9.6    -      -       +      -
    173B  THR*     4.5    16.8    -      -       +      +
    175B  GLN*     3.8    37.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  GLN*     3.0    20.7    +      -       +      +
     80A  SER*     3.1     8.0    +      -       -      +
     82A  ILE*     1.3    80.0    -      -       -      +
     84A  ILE*     1.3    60.0    +      -       +      +
     86A  ARG*     3.6    13.4    -      -       -      +
     87A  ALA*     2.9    30.7    +      -       -      +
    147A  GLN      5.2     9.6    -      -       -      +
    148A  LEU*     5.8     7.8    -      -       +      +
    175B  GLN*     4.5    12.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  SER*     2.9    23.0    +      -       -      +
     81A  ILE*     3.1    19.4    +      -       +      +
     83A  ALA*     1.3    74.6    -      -       +      +
     85A  ILE*     1.3    60.3    +      -       -      +
     87A  ALA*     3.3     4.5    +      -       +      +
     88A  MET*     2.9    41.3    +      -       +      +
    131A  TRP*     5.8     5.8    -      -       +      -
    136A  VAL*     3.7    33.0    -      -       +      +
    139A  CYS*     5.2     3.8    -      -       +      +
    140A  PHE*     5.0    14.4    -      -       +      +
    143A  SER*     4.5     7.2    -      -       -      +
    148A  LEU*     3.7    30.1    -      -       +      -
    152A  ALA*     5.6     7.0    -      -       +      -
    156A  LEU*     6.0     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  ILE*     3.0    16.8    +      -       +      +
     82A  ILE*     3.3    19.5    -      -       +      +
     84A  ILE*     1.3    77.7    -      -       -      +
     86A  ARG*     1.3    61.3    +      -       +      +
     88A  MET*     3.1    31.1    +      -       +      +
     89A  GLY*     2.9    23.0    +      -       -      -
    103A  ASP*     5.8     2.9    -      -       -      +
    106A  GLN*     3.3    48.0    -      -       +      +
    109A  VAL*     6.2     2.0    -      -       +      -
    110A  LEU*     4.7     8.5    -      -       +      -
    130A  LEU*     5.6     6.1    -      -       +      -
    107H  TRP*     4.8    12.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  ILE*     3.0    25.0    +      -       -      +
     83A  ALA*     3.6    12.0    -      -       -      +
     85A  ILE*     1.3    79.3    -      -       +      +
     87A  ALA*     1.3    60.8    +      -       -      +
     89A  GLY*     3.2     4.0    +      -       -      +
     90A  ARG*     2.9    46.9    +      -       +      +
    175B  GLN*     3.9    27.6    +      -       -      +
    176B  GLN*     3.1    29.6    +      -       -      +
    177B  THR*     3.7    17.8    +      -       -      +
    107H  TRP*     5.5     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ALA      2.9    22.5    +      -       -      +
     84A  ILE*     3.4     9.2    -      -       +      +
     86A  ARG*     1.3    78.3    -      -       -      +
     88A  MET*     1.3    62.2    +      -       +      +
     90A  ARG*     3.4    14.2    +      -       -      +
     91A  LEU*     3.4    21.0    +      -       -      +
    139A  CYS*     6.3     1.6    -      -       +      -
    143A  SER*     4.5    21.3    -      -       -      -
    146A  TYR*     5.9     7.2    -      -       +      -
    148A  LEU*     5.9     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ILE*     2.9    24.9    +      -       +      +
     85A  ILE*     3.1    44.2    +      -       +      +
     87A  ALA*     1.3    77.3    -      -       -      +
     89A  GLY*     1.3    60.8    +      -       -      +
     91A  LEU*     3.1    28.2    +      -       -      +
     93A  ILE      5.0     2.1    -      -       -      +
     95A  PHE*     3.6    44.1    +      -       +      +
    130A  LEU*     5.9     5.6    -      -       +      -
    136A  VAL*     4.7    16.8    -      -       +      -
    139A  CYS*     3.6    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  ILE*     2.9    13.7    +      -       -      +
     86A  ARG      3.2     4.9    +      -       -      -
     88A  MET*     1.3    75.7    -      -       -      +
     90A  ARG*     1.3    61.3    +      -       -      +
     91A  LEU      3.2     7.4    +      -       -      +
    107H  TRP*     4.1    36.4    -      -       -      +
    108H  MET*     4.8    11.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  ARG*     2.9    36.6    +      -       +      +
     87A  ALA*     3.8    10.5    -      -       -      +
     88A  MET      3.2     0.6    -      -       -      -
     89A  GLY*     1.3    76.8    -      -       -      +
     91A  LEU*     1.3    63.2    +      -       +      +
     92A  LYS*     3.8    41.0    +      -       -      +
    146A  TYR*     6.3     3.6    -      -       +      -
    111H  PRO*     3.5    40.6    -      -       -      +
----------------------------------------------------------
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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