Contacts of the helix formed by residues 86 - 108 (chain G) in PDB entry 2POZ


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with GLY 86 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84C  ASN      5.3     0.9    -      -       -      -
     85C  GLY      4.9     0.7    -      -       -      -
     86C  GLY*     3.9    26.6    -      -       -      -
     87C  ALA      4.8     2.0    -      -       -      +
     85G  GLY*     1.3    73.2    -      -       -      -
     87G  ALA*     1.3    66.2    -      -       -      -
     88G  ILE      3.3     2.9    -      -       -      -
     89G  ILE*     3.2     9.6    -      -       -      +
     90G  PHE*     3.1    24.3    +      -       -      +
    260G  TYR*     4.0    13.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 87 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81C  TRP*     3.6    33.7    -      -       +      +
     85C  GLY*     5.7     0.8    -      -       -      -
     86C  GLY      4.9     3.4    -      -       -      +
     39G  ILE*     4.2     6.1    -      -       +      -
     86G  GLY*     1.3    70.9    -      -       -      -
     88G  ILE*     1.3    60.3    +      -       +      +
     91G  ALA*     2.7    35.9    +      -       -      +
    260G  TYR*     3.4    42.0    -      -       +      +
    283G  THR*     4.8     1.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 88 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  ALA*     4.2     0.7    -      -       +      -
     51C  MSE      5.4     2.5    -      -       -      -
     81C  TRP*     5.3     7.9    -      -       +      -
     88C  ILE*     3.6    46.2    -      -       +      -
     89C  ILE*     4.7    10.5    -      -       +      +
     39G  ILE*     4.2    22.4    -      -       +      -
     43G  VAL      5.5     0.2    -      -       -      +
     44G  GLY*     4.1    23.8    -      -       -      +
     47G  ALA*     3.9    26.0    -      -       +      +
     48G  ALA*     4.3     3.7    -      -       -      +
     51G  MSE      3.7    15.0    -      -       +      +
     86G  GLY      3.3     0.6    -      -       -      -
     87G  ALA*     1.3    78.9    -      -       +      +
     89G  ILE*     1.3    65.5    +      -       -      +
     91G  ALA*     3.8     3.1    -      -       -      +
     92G  GLY*     3.1    17.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 89 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  VAL      4.6     3.1    -      -       -      +
     88C  ILE*     4.6     7.6    -      -       +      +
     51G  MSE      3.6    29.8    -      -       -      +
     55G  LEU*     4.3     6.1    -      -       +      -
     79G  SER*     3.9    25.4    -      -       -      +
     81G  TRP*     3.8    19.5    -      -       +      +
     82G  ALA*     3.9    21.3    -      -       +      +
     85G  GLY*     3.8     4.9    -      -       -      -
     86G  GLY      3.2    28.9    -      -       -      +
     88G  ILE*     1.3    77.5    -      -       -      +
     90G  PHE*     1.3    70.2    +      -       +      +
     92G  GLY*     3.4     1.6    +      -       -      -
     93G  ILE*     3.1    37.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 90 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237C  PHE*     3.8     6.7    -      +       -      -
     72G  TRP*     4.2    13.5    -      +       -      -
     76G  TYR*     3.8    26.0    -      +       -      -
     82G  ALA*     3.1    31.9    -      -       +      -
     85G  GLY*     3.5    21.3    -      -       -      -
     86G  GLY      3.1    21.3    +      -       -      +
     87G  ALA      4.5     0.2    -      -       -      +
     89G  ILE*     1.3    80.7    -      -       +      +
     91G  ALA*     1.3    56.6    +      -       -      +
     93G  ILE*     3.7    22.2    -      -       +      +
     94G  SER*     2.6    37.9    +      -       -      -
    260G  TYR*     4.1     6.7    -      -       +      -
    261G  THR*     3.5    34.5    -      -       +      -
    283G  THR      3.2    20.2    -      -       -      +
    285G  GLY*     4.2     3.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 91 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37G  ALA*     3.4    18.8    -      -       +      +
     39G  ILE*     3.5    30.1    -      -       +      -
     48G  ALA*     5.2     1.3    -      -       +      -
     87G  ALA      2.7    25.7    +      -       -      +
     88G  ILE      3.3     3.3    +      -       -      +
     90G  PHE*     1.3    73.5    -      -       -      +
     92G  GLY*     1.3    63.9    +      -       -      +
     94G  SER*     3.4     2.4    +      -       -      -
     95G  ALA      3.1    18.2    +      -       -      -
    282G  GLY      3.2    20.9    -      -       -      +
    283G  THR*     4.1     3.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 92 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37G  ALA*     4.5     0.9    -      -       -      +
     48G  ALA      5.0     1.5    +      -       -      -
     51G  MSE      4.3     4.7    -      -       -      -
     52G  ILE*     3.7    24.8    -      -       -      +
     55G  LEU*     3.9    11.7    -      -       -      -
     88G  ILE      3.1    12.4    +      -       -      -
     89G  ILE      3.9     3.4    -      -       -      -
     91G  ALA*     1.3    80.0    -      -       -      +
     93G  ILE*     1.3    60.7    +      -       -      +
     95G  ALA*     3.5     2.9    +      -       -      +
     96G  ILE*     3.3    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 93 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55G  LEU*     3.7    17.0    -      -       +      -
     72G  TRP*     3.4    39.5    -      -       +      +
     75G  MSE      4.1    38.1    -      -       +      +
     76G  TYR*     4.6     3.4    -      -       +      +
     82G  ALA*     4.7     2.2    -      -       +      -
     89G  ILE*     3.1    32.7    +      -       +      +
     90G  PHE*     3.9    26.7    -      -       +      +
     92G  GLY*     1.3    73.5    -      -       -      +
     94G  SER*     1.3    59.6    +      -       -      +
     96G  ILE*     3.4     6.1    +      -       -      +
     97G  GLU*     2.8    27.0    +      -       -      +
    285G  GLY      4.2     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 94 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90G  PHE      2.6    24.7    +      -       -      -
     91G  ALA      3.6     4.5    -      -       -      -
     93G  ILE*     1.3    75.5    -      -       -      +
     95G  ALA*     1.3    57.2    +      -       -      +
     97G  GLU*     3.1     1.9    +      -       -      +
     98G  GLN*     2.8    40.4    +      -       -      +
    281G  ILE      3.1    22.5    +      -       -      -
    282G  GLY*     3.6     9.6    -      -       -      -
    283G  THR      3.6     4.0    +      -       -      -
    285G  GLY      2.8    35.2    +      -       -      -
    286G  GLY      3.1     1.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21G  VAL      5.3     0.2    -      -       -      +
     23G  VAL*     3.6    15.1    -      -       +      +
     35G  GLY*     3.5     6.6    -      -       -      -
     36G  GLU*     3.8    15.2    +      -       -      +
     37G  ALA      3.6    22.2    -      -       -      +
     52G  ILE*     3.8    18.8    -      -       +      -
     91G  ALA      3.1     7.9    +      -       -      +
     92G  GLY      3.7     8.5    -      -       -      +
     94G  SER*     1.3    79.1    -      -       -      +
     96G  ILE*     1.3    64.3    +      -       -      +
     98G  GLN*     3.2     4.2    +      -       -      +
     99G  ALA      3.1    17.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 96 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  VAL*     4.6     6.3    -      -       +      -
     25G  ILE*     3.9     4.2    -      -       +      +
     52G  ILE*     4.3    14.8    -      -       +      -
     55G  LEU*     3.8    29.6    -      -       +      -
     56G  SER*     4.0     6.1    -      -       -      +
     60G  LEU*     3.7    39.9    -      -       +      -
     75G  MSE      3.7    29.2    -      -       +      -
     92G  GLY      3.3    13.8    +      -       -      +
     93G  ILE      3.6     6.3    -      -       -      +
     94G  SER      3.2     0.2    -      -       -      -
     95G  ALA*     1.3    80.6    -      -       -      +
     97G  GLU*     1.3    62.4    +      -       -      +
     99G  ALA*     3.2     9.6    +      -       -      +
    100G  LEU*     3.0    28.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 97 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68G  ILE*     4.0    12.1    -      -       +      -
     72G  TRP*     4.0    20.4    -      -       +      -
     75G  MSE      5.6     1.6    -      -       +      -
     93G  ILE      2.8    21.2    +      -       -      +
     94G  SER      3.1     3.3    +      -       -      +
     96G  ILE*     1.3    71.0    -      -       -      +
     98G  GLN*     1.3    70.3    +      -       -      +
    100G  LEU*     3.1    19.2    +      -       +      +
    101G  TRP*     3.1    42.2    +      -       +      +
    285G  GLY      4.0     7.3    -      -       -      +
    286G  GLY*     3.3     5.5    -      -       -      -
    287G  LEU*     2.8    24.9    +      -       -      -
    288G  MSE      2.9    30.3    +      -       -      +
    289G  GLU      3.8     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 98 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34G  ALA      3.7     3.4    -      -       -      +
     35G  GLY*     3.6     7.2    -      -       -      -
     36G  GLU*     2.8    45.0    +      -       -      +
     94G  SER      2.8    20.6    +      -       -      +
     95G  ALA      3.2     6.5    +      -       -      +
     97G  GLU*     1.3    81.5    -      -       -      +
     99G  ALA*     1.3    62.3    +      -       -      +
    101G  TRP*     3.3     4.7    +      -       -      +
    102G  ASP*     3.1    21.3    +      -       -      +
    281G  ILE*     3.1    38.9    +      -       +      +
    282G  GLY*     3.6     5.5    -      -       -      -
    287G  LEU*     4.5    22.4    -      -       +      +
    313G  LEU*     5.4     0.9    -      -       -      +
    314G  ILE*     4.6     3.4    -      -       -      +
    317G  ALA*     4.4    10.1    -      -       +      +
    366G  LEU*     3.6    10.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 99 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  VAL*     4.4     4.0    -      -       +      -
     25G  ILE*     3.6    22.2    -      -       +      -
     33G  GLY*     3.6    22.5    -      -       -      +
     34G  ALA      3.4    15.7    +      -       -      +
     35G  GLY      4.2     0.9    -      -       -      +
     95G  ALA      3.1     9.1    +      -       -      +
     96G  ILE      3.4     9.4    -      -       -      +
     97G  GLU      3.2     0.2    -      -       -      -
     98G  GLN*     1.3    81.0    -      -       -      +
    100G  LEU*     1.3    61.8    +      -       -      +
    102G  ASP*     3.2     3.3    +      -       -      +
    103G  ILE*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 100 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5G  ILE*     4.5     4.9    -      -       +      -
     25G  ILE*     4.3    15.5    -      -       +      -
     65G  PRO*     3.7    36.4    -      -       +      +
     68G  ILE*     3.6    37.9    -      -       +      +
     71G  LEU*     3.5    34.8    -      -       +      -
     75G  MSE      5.1     2.0    -      -       +      -
     96G  ILE*     3.0    31.6    +      -       +      +
     97G  GLU*     3.1    10.7    +      -       +      +
     99G  ALA*     1.3    77.6    -      -       -      +
    101G  TRP*     1.3    56.8    +      -       -      +
    103G  ILE*     3.4     8.9    +      -       +      +
    104G  LYS*     3.1    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 101 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115D  LEU      3.6    25.4    -      -       -      -
    117D  GLY*     3.6    24.9    -      -       -      -
     68G  ILE*     3.5    23.2    -      -       +      +
     69G  GLU*     4.9     1.1    -      -       -      -
     97G  GLU*     3.1    55.9    +      -       +      -
     98G  GLN      3.8     6.5    -      -       -      +
     99G  ALA      3.3     0.2    -      -       -      -
    100G  LEU*     1.3    73.7    -      -       -      +
    102G  ASP*     1.3    60.6    +      -       -      +
    104G  LYS*     3.7     9.4    -      -       +      +
    105G  GLY*     2.8    29.1    +      -       -      -
    112G  VAL*     3.7    24.3    -      -       +      +
    115G  LEU*     3.8    27.1    -      -       +      -
    116G  PHE*     3.5    33.4    -      +       -      -
    287G  LEU*     4.4    11.2    -      -       +      -
    288G  MSE      3.8    21.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 102 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33G  GLY*     3.1     9.9    -      -       -      -
     34G  ALA*     2.9    24.6    +      -       -      +
     98G  GLN      3.1    13.5    +      -       -      +
     99G  ALA      3.2    10.5    -      -       -      +
    101G  TRP*     1.3    78.9    -      -       -      +
    103G  ILE*     1.3    62.7    +      -       -      +
    105G  GLY      3.3     0.2    +      -       -      -
    106G  LYS*     3.0    55.8    +      -       -      +
    364G  PRO      4.4     0.2    -      -       -      +
    365G  GLY*     3.5     4.4    -      -       -      -
    366G  LEU*     2.9    48.1    +      -       +      +
    367G  GLY      4.5     0.9    +      -       -      -
    368G  ALA      5.0     4.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 103 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3G  LEU*     4.3    10.8    -      -       +      -
     25G  ILE*     4.1    21.1    -      -       +      +
     27G  THR*     3.7    23.3    -      -       +      -
     31G  ILE*     4.1    13.6    -      -       +      +
     32G  THR*     3.7     5.6    -      -       -      -
     33G  GLY      3.6    24.2    -      -       -      +
     65G  PRO*     4.5    22.0    -      -       +      -
     99G  ALA      3.0    18.1    +      -       -      +
    100G  LEU*     3.7     9.6    -      -       +      +
    101G  TRP      3.2     0.2    -      -       -      -
    102G  ASP*     1.3    75.7    -      -       -      +
    104G  LYS*     1.3    58.4    +      -       -      +
    106G  LYS*     3.2     3.0    +      -       -      +
    107G  CYS*     2.9    47.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 104 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114D  GLU*     3.0    43.8    +      -       -      +
    115D  LEU*     4.8     0.4    -      -       -      +
    117D  GLY*     4.1     6.1    -      -       -      -
    118D  GLY      3.8     1.6    -      -       -      +
     65G  PRO      6.3     0.2    -      -       -      -
     66G  SER*     2.9    37.0    +      -       -      +
     68G  ILE*     3.5    25.4    -      -       +      -
    100G  LEU      3.1    15.8    +      -       -      +
    101G  TRP*     3.8    22.2    -      -       +      +
    103G  ILE*     1.3    77.9    -      -       -      +
    105G  GLY*     1.3    64.0    +      -       -      +
    107G  CYS*     3.3     8.1    +      -       +      +
    108G  LEU*     3.1    34.9    +      -       +      +
    115G  LEU*     3.9    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 105 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101G  TRP      2.8    16.9    +      -       -      -
    104G  LYS*     1.3    76.4    -      -       -      +
    106G  LYS*     1.3    57.5    +      -       -      +
    108G  LEU*     3.3     3.0    +      -       -      -
    109G  GLY      2.8    23.9    +      -       -      -
    110G  VAL      3.0    25.4    +      -       -      -
    112G  VAL*     5.0     0.7    -      -       -      -
    115G  LEU*     4.1    13.6    -      -       -      +
    365G  GLY*     3.6    13.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 106 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31G  ILE*     4.0    20.5    -      -       +      +
     32G  THR*     3.0    36.0    +      -       -      +
     34G  ALA*     6.0     0.6    -      -       -      +
    102G  ASP*     3.0    41.3    +      -       -      +
    103G  ILE      3.6     4.3    -      -       -      +
    105G  GLY*     1.3    76.5    -      -       -      +
    107G  CYS*     1.3    63.4    +      -       -      +
    109G  GLY*     3.2    11.4    +      -       -      -
    364G  PRO*     4.1    31.5    -      -       +      +
    367G  GLY      6.1     0.2    -      -       -      +
    368G  ALA      4.9    10.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 107 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3G  LEU*     3.6    33.7    -      -       -      -
     31G  ILE*     3.8    17.0    -      -       -      -
    103G  ILE*     2.9    32.0    +      -       -      +
    104G  LYS*     3.6     9.4    -      -       -      +
    105G  GLY      3.3     0.2    -      -       -      -
    106G  LYS*     1.3    77.8    -      -       -      +
    108G  LEU*     1.3    67.7    +      -       +      +
    109G  GLY      3.8     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 108 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108D  LEU*     3.9    24.8    -      -       +      +
    110D  VAL*     3.5    34.8    -      -       +      -
    114D  GLU*     5.5     4.5    -      -       +      +
    115D  LEU*     4.1    14.4    -      -       +      -
    104G  LYS*     3.1    29.7    +      -       +      +
    105G  GLY      4.1     2.0    -      -       -      +
    107G  CYS*     1.3    84.8    -      -       +      +
    109G  GLY*     1.3    63.8    +      -       -      +
    110G  VAL*     3.4    18.1    +      -       +      +
    115G  LEU*     3.8    24.0    -      -       +      -
----------------------------------------------------------
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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