Contacts of the helix formed by residues 86 - 111 (chain A) in PDB entry 4RWN


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 86 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  THR*     1.3    82.5    +      -       -      +
     87A  PHE*     1.3    59.7    +      -       -      +
     88A  GLU*     3.4    10.0    +      -       -      +
     89A  ASP*     2.9    23.9    +      -       -      +
     90A  GLN      3.0    22.0    +      -       -      -
    152A  PHE*     3.4    26.9    -      -       -      +
    171A  GLN*     4.1     8.1    -      -       -      +
    175A  GLU*     4.0     9.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  SER*     1.3    70.7    -      -       -      +
     88A  GLU*     1.3    62.2    +      -       -      +
     90A  GLN*     3.1     3.2    +      -       -      +
     91A  LEU*     2.9    25.6    +      -       -      +
    152A  PHE*     3.9     9.0    -      +       -      -
    154A  ALA*     3.6    32.1    -      -       +      -
    168A  ILE*     4.0     8.3    -      -       +      -
    171A  GLN*     3.4    43.7    -      -       +      -
    172A  LEU*     3.7    34.1    -      -       +      -
    175A  GLU*     3.8    13.2    +      -       +      +
    185A  PHE*     3.1    46.3    -      +       +      -
    188A  CYS*     3.8    15.5    -      -       -      -
    189A  PHE*     4.0    15.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLU 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  SER*     3.5     7.6    -      -       -      +
     87A  PHE*     1.3    77.5    -      -       -      +
     89A  ASP*     1.3    63.4    +      -       -      +
     91A  LEU*     3.1    10.2    +      -       -      +
     92A  ARG*     2.8    54.9    +      -       -      +
    175A  GLU*     3.2    26.6    +      -       -      +
    179A  ARG*     3.5    33.6    +      -       -      +
    185A  PHE*     5.3     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  LYS      2.9    15.1    -      -       -      +
     84A  LEU*     3.2     9.6    -      -       +      +
     85A  THR*     2.9    29.0    +      -       -      +
     86A  SER*     2.9    28.1    +      -       -      +
     88A  GLU*     1.3    78.4    -      -       -      +
     90A  GLN*     1.3    58.2    +      -       -      +
     92A  ARG*     4.0     5.1    -      -       -      +
     93A  ARG*     3.0    56.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     3.7    11.6    -      -       +      +
     86A  SER      3.0    12.9    +      -       -      +
     87A  PHE*     3.1     9.4    +      -       -      +
     89A  ASP*     1.3    74.8    -      -       -      +
     91A  LEU*     1.3    65.8    +      -       -      +
     94A  ARG*     3.1    43.4    +      -       +      +
    150A  PRO      3.8    17.7    +      -       -      +
    151A  ALA*     3.6     5.4    -      -       -      +
    152A  PHE*     2.7    36.0    +      -       +      +
    184A  GLU      5.2     1.0    +      -       -      -
    185A  PHE*     4.1    14.4    -      -       +      +
    187A  THR*     3.1    26.7    +      -       -      -
    188A  CYS*     3.0    20.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  PHE      2.9    12.2    +      -       -      +
     88A  GLU*     3.5     9.0    -      -       -      +
     90A  GLN*     1.3    78.3    -      -       -      +
     92A  ARG*     1.3    63.0    +      -       +      +
     94A  ARG*     3.8    31.1    -      -       -      +
    127A  ASN*     2.7    33.8    +      -       -      +
    179A  ARG*     4.1    41.3    -      -       +      +
    181A  LYS*     4.4    20.4    -      -       +      -
    184A  GLU*     4.0    16.8    -      -       +      +
    185A  PHE*     3.9    12.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  GLU*     2.8    51.8    +      -       -      +
     89A  ASP*     4.4     4.8    -      -       -      +
     91A  LEU*     1.3    86.3    -      -       +      +
     93A  ARG*     1.3    67.8    +      -       +      +
     94A  ARG      3.6     0.7    -      -       -      -
     95A  GLY*     4.8     2.9    +      -       -      -
     96A  GLU*     4.6     5.9    +      -       -      +
    127A  ASN*     5.0     2.4    +      -       -      +
    179A  ARG*     4.6    11.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  LYS*     3.6    29.3    +      -       -      +
     84A  LEU*     4.2     2.0    -      -       +      -
     89A  ASP*     3.0    38.9    +      -       -      +
     90A  GLN      4.2     0.2    -      -       -      -
     92A  ARG*     1.3    83.7    -      -       +      +
     94A  ARG*     1.3    65.4    +      -       -      +
     95A  GLY      3.2     2.7    -      -       -      -
     96A  GLU*     3.1    42.8    +      -       -      +
     97A  PHE*     3.1    54.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     5.4     2.2    -      -       +      -
     90A  GLN*     3.1    33.9    +      -       +      +
     91A  LEU*     3.8    20.8    -      -       -      +
     93A  ARG*     1.3    77.8    -      -       -      +
     95A  GLY*     1.3    61.0    +      -       -      +
     97A  PHE*     3.4     4.5    +      -       -      -
     98A  ILE*     2.9    34.8    +      -       +      +
    127A  ASN*     3.0    43.0    +      -       -      +
    128A  PRO      3.1    21.9    +      -       -      +
    129A  ARG*     3.4    26.4    -      -       -      +
    150A  PRO*     3.8    28.1    -      -       +      +
    184A  GLU*     2.7    38.9    +      -       -      +
    185A  PHE*     5.0     1.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  ARG      4.8     2.5    +      -       -      -
     93A  ARG*     3.2     1.4    -      -       -      +
     94A  ARG*     1.3    84.9    -      -       -      +
     96A  GLU*     1.3    60.5    +      -       -      +
     98A  ILE*     3.4    10.2    +      -       -      +
     99A  GLN*     3.0    31.1    +      -       -      +
    127A  ASN*     4.1    12.3    +      -       -      -
    128A  PRO*     5.1     4.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  ARG      4.6     5.1    -      -       -      +
     93A  ARG*     3.1    49.3    +      -       -      +
     95A  GLY*     1.3    78.1    -      -       -      +
     97A  PHE*     1.3    62.5    +      -       +      +
     99A  GLN*     3.3     5.9    +      -       -      +
    100A  GLU*     3.1    27.6    +      -       -      +
    103A  ARG*     4.5     2.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  PHE*     4.1    14.3    -      +       +      -
     52A  VAL*     4.4    23.1    -      -       +      -
     81A  LEU*     3.5    32.3    -      -       +      -
     83A  LYS*     4.4    12.8    -      -       +      -
     84A  LEU*     3.9    21.8    -      -       +      -
     93A  ARG*     3.1    65.9    +      -       -      -
     94A  ARG*     4.0     4.7    -      -       -      +
     96A  GLU*     1.3    81.9    -      -       +      +
     98A  ILE*     1.3    60.4    +      -       -      +
    100A  GLU*     3.8     6.1    -      -       +      +
    101A  ILE*     2.9    39.6    +      -       +      +
    150A  PRO*     4.3     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  ARG*     2.9    27.4    +      -       +      +
     95A  GLY*     3.6     8.5    -      -       -      +
     96A  GLU      3.3     0.2    -      -       -      -
     97A  PHE*     1.3    76.8    -      -       -      +
     99A  GLN*     1.3    67.5    +      -       +      +
    101A  ILE*     3.2    10.8    +      -       +      +
    102A  ARG*     2.9    26.9    +      -       -      +
    128A  PRO*     3.5    32.1    -      -       +      +
    129A  ARG      3.9    12.1    -      -       -      +
    130A  ALA      3.9    19.7    -      -       -      +
    131A  LEU*     3.9    31.2    -      -       +      +
    150A  PRO*     3.8    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  GLY      3.0    21.4    +      -       -      +
     96A  GLU*     3.7     5.8    -      -       -      +
     98A  ILE*     1.3    82.7    -      -       +      +
    100A  GLU*     1.3    57.9    +      -       -      +
    102A  ARG*     3.2    25.8    +      -       -      +
    103A  ARG*     2.8    49.9    +      -       -      +
    131A  LEU*     5.7     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  CYS      4.8     1.6    -      -       -      +
     45A  PHE*     4.7    18.6    -      -       +      -
     96A  GLU      3.1    16.4    +      -       -      +
     97A  PHE*     3.8     9.4    -      -       +      +
     98A  ILE      3.2     0.2    -      -       -      -
     99A  GLN*     1.3    73.4    -      -       -      +
    101A  ILE*     1.3    65.4    +      -       -      +
    103A  ARG*     2.7    46.3    +      -       -      +
    104A  GLN*     3.0    55.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  PHE*     4.0    10.4    -      -       +      -
     40A  LEU*     4.4     9.6    -      -       +      -
     44A  CYS*     4.0    10.8    -      -       -      -
     45A  PHE*     3.8    27.1    -      -       +      -
     79A  VAL*     4.4    13.2    -      -       +      -
     81A  LEU*     5.8     0.4    -      -       +      -
     97A  PHE*     2.9    29.0    +      -       +      +
     98A  ILE*     3.5     7.6    -      -       +      +
    100A  GLU*     1.3    76.4    -      -       -      +
    102A  ARG*     1.3    58.0    +      -       -      +
    104A  GLN*     3.3     2.4    +      -       -      +
    105A  LEU*     2.9    38.8    +      -       +      +
    131A  LEU*     3.7    18.6    -      -       +      -
    133A  PHE*     5.7     0.7    -      -       +      -
    148A  VAL*     4.4    23.3    -      -       +      -
    150A  PRO*     5.0     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  ILE      2.9    13.6    +      -       -      +
     99A  GLN*     3.2    28.4    +      -       -      +
    101A  ILE*     1.3    76.8    -      -       -      +
    103A  ARG*     1.3    62.9    +      -       -      +
    105A  LEU*     3.3     5.7    +      -       -      +
    106A  GLU*     3.0    45.4    +      -       -      +
    118A  PHE*     3.7    48.0    -      -       +      +
    121A  GLN*     4.7    11.3    +      -       -      -
    131A  LEU*     3.8    22.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  GLU      4.5     2.4    +      -       -      -
     99A  GLN*     2.8    32.4    +      -       -      +
    100A  GLU*     2.7    55.7    +      -       -      +
    102A  ARG*     1.3    74.6    -      -       -      +
    104A  GLN*     1.3    58.9    +      -       +      +
    106A  GLU*     3.4    14.4    +      -       -      +
    107A  ALA*     3.0    25.7    +      -       -      +
    110A  ARG*     4.5     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  PHE*     3.7    20.6    -      -       +      -
     43A  ARG*     4.4    19.8    +      -       -      +
     44A  CYS*     3.2    30.9    +      -       -      +
     47A  GLY*     4.9    13.1    -      -       -      -
    100A  GLU*     3.0    38.6    +      -       -      +
    101A  ILE      3.9     1.1    -      -       -      +
    103A  ARG*     1.3    74.4    -      -       -      +
    105A  LEU*     1.3    65.1    +      -       -      +
    107A  ALA*     3.3    12.0    +      -       -      +
    108A  CYS*     3.0    27.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  VAL*     6.0     4.5    -      -       +      -
     39A  PHE*     3.5    30.5    -      -       +      -
    101A  ILE*     2.9    25.9    +      -       +      +
    102A  ARG      3.3     4.5    +      -       -      +
    104A  GLN*     1.3    76.5    -      -       -      +
    106A  GLU*     1.3    57.0    -      -       -      +
    108A  CYS*     3.1     5.2    +      -       -      +
    109A  GLN*     2.9    27.0    +      -       -      +
    114A  PHE*     3.9    25.8    -      -       +      -
    116A  VAL*     4.3    11.7    -      -       +      -
    118A  PHE*     3.9    23.1    -      -       +      -
    131A  LEU*     4.0    10.1    -      -       +      -
    133A  PHE*     3.9    34.5    -      -       +      -
    135A  LEU*     5.8     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  ARG*     3.0    49.2    +      -       -      +
    103A  ARG*     3.7    14.4    -      -       -      +
    105A  LEU*     1.3    75.8    -      -       -      +
    107A  ALA*     1.3    61.7    +      -       -      +
    109A  GLN*     3.3    19.9    +      -       -      +
    110A  ARG*     3.2    46.5    +      -       -      +
    116A  VAL*     4.8     0.2    -      -       -      -
    118A  PHE*     4.1    18.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  ARG*     4.6    10.8    -      -       -      +
    103A  ARG      3.0    14.5    +      -       -      +
    104A  GLN*     3.3    20.9    -      -       -      +
    105A  LEU      3.1     0.4    -      -       -      -
    106A  GLU*     1.3    76.6    -      -       -      +
    108A  CYS*     1.3    61.2    +      -       -      +
    110A  ARG*     3.2    30.1    +      -       -      +
    111A  GLU*     3.4    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  PHE*     3.8    24.7    -      -       -      -
     43A  ARG*     4.0    31.0    -      -       -      -
    104A  GLN      3.0    16.0    +      -       -      -
    105A  LEU      3.1     4.2    +      -       -      +
    107A  ALA*     1.3    73.0    -      -       -      +
    109A  GLN*     1.3    66.3    +      -       -      +
    111A  GLU*     3.1    19.2    +      -       -      +
    113A  LYS*     3.2    29.7    +      -       +      +
    114A  PHE*     3.6    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  LEU      2.9    13.0    +      -       -      +
    106A  GLU*     3.4    21.6    +      -       -      +
    107A  ALA      3.2     0.2    -      -       -      -
    108A  CYS*     1.3    77.1    -      -       -      +
    110A  ARG*     1.3    58.0    +      -       +      +
    112A  GLN*     3.0    26.7    +      -       -      +
    114A  PHE*     3.3    24.9    -      -       +      +
    115A  LYS*     3.3    15.5    -      -       +      +
    116A  VAL*     3.0    46.9    +      -       +      +
    118A  PHE*     5.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  ARG      4.5     2.4    +      -       -      -
    106A  GLU*     3.2    32.0    +      -       -      +
    107A  ALA*     3.2    38.0    +      -       -      +
    109A  GLN*     1.3    77.3    -      -       +      +
    111A  GLU*     1.3    58.4    +      -       +      +
    112A  GLN*     3.1    22.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  ARG*     2.7    35.1    +      -       -      -
    107A  ALA*     3.4    17.9    -      -       -      +
    108A  CYS*     3.1     8.0    +      -       -      +
    109A  GLN      3.1     1.4    -      -       -      -
    110A  ARG*     1.3    76.4    -      -       +      +
    112A  GLN*     1.3    71.1    +      -       -      +
    113A  LYS*     2.4    48.4    +      -       +      +
----------------------------------------------------------
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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