Contacts of the helix formed by residues 83 - 107 (chain A) in PDB entry 4JUY


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 GLU 83 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  HIS      3.7     0.4    +      -       -      -
     82A  GLY*     1.3    74.6    -      -       -      -
     84A  PRO*     1.3    74.2    -      -       +      +
     85A  ARG*     4.2    14.9    -      -       +      +
     86A  ASN*     2.9    23.7    +      -       +      +
     87A  TYR*     3.1    14.9    +      -       -      -
     86B  ASN*     3.9    18.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  GLY      4.3     1.8    -      -       -      +
     83A  GLU*     1.3    84.7    -      -       +      +
     85A  ARG*     1.3    62.6    +      -       -      +
     86A  ASN      2.9     1.0    +      -       -      -
     87A  TYR*     3.3    33.2    -      -       +      +
     88A  LEU*     3.0    47.9    +      -       +      +
    193A  LEU*     4.1    17.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  GLU*     4.2    15.7    -      -       +      +
     84A  PRO*     1.3    78.0    -      -       -      +
     86A  ASN*     1.3    63.4    +      -       -      +
     89A  ASN*     2.8    30.8    +      -       -      +
    183A  LEU*     3.8    12.8    -      -       +      +
     86B  ASN*     4.9     2.7    -      -       -      +
     89B  ASN*     4.2     3.7    +      -       +      +
     90B  THR*     5.4     7.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  HIS      5.0     3.4    -      -       -      +
     82A  GLY*     6.0     0.8    -      -       -      -
     83A  GLU*     2.9    18.0    +      -       -      +
     85A  ARG*     1.3    80.9    -      -       -      +
     87A  TYR*     1.3    61.1    +      -       -      +
     88A  LEU      3.2     1.8    -      -       -      -
     89A  ASN*     2.9    21.3    +      -       -      +
     90A  THR*     3.0    14.8    +      -       -      +
     85B  ARG*     4.5     8.9    -      -       -      +
     86B  ASN*     2.8    54.0    +      -       -      +
     89B  ASN*     3.6    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  VAL*     4.7     8.1    -      -       +      -
     79A  ASN*     3.2    23.4    -      -       -      +
     80A  ALA*     3.7    30.4    -      -       +      +
     81A  HIS*     3.4    26.7    -      -       +      +
     82A  GLY      3.7     8.5    -      -       -      -
     83A  GLU      3.1    21.2    +      -       -      -
     84A  PRO*     3.3    36.2    -      -       +      +
     86A  ASN*     1.3    79.2    -      -       -      +
     88A  LEU*     1.3    79.4    +      -       +      +
     90A  THR*     3.6    10.7    -      -       -      -
     91A  LEU*     2.7    35.6    +      -       +      +
    193A  LEU*     4.2    15.8    -      -       +      +
    197A  LEU*     4.4     8.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  VAL*     6.1     2.5    -      -       +      -
     84A  PRO*     3.0    44.9    +      -       +      +
     87A  TYR*     1.3    93.0    -      -       +      +
     89A  ASN*     1.3    52.9    +      -       -      +
     91A  LEU*     3.8     6.0    -      -       +      +
     92A  SER*     2.6    38.0    +      -       -      -
    179A  LEU*     3.9    30.3    -      -       +      +
    182A  LEU*     4.0    27.6    -      -       +      -
    183A  LEU*     4.1    23.8    -      -       +      +
    193A  LEU*     4.6    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  ARG      2.8    23.0    +      -       -      -
     86A  ASN      2.9    10.6    +      -       -      +
     88A  LEU*     1.3    76.5    -      -       -      +
     90A  THR*     1.3    58.6    +      -       -      +
     92A  SER*     3.2     7.4    +      -       -      -
     93A  THR*     2.9    36.0    +      -       -      +
    183A  LEU*     3.6    25.7    -      -       -      +
     89B  ASN*     3.4    43.2    +      -       -      +
     93B  THR*     4.5     8.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  ASN*     5.9     2.2    -      -       +      +
     86A  ASN*     3.0    14.2    +      -       -      +
     87A  TYR*     3.6    13.8    -      -       +      +
     89A  ASN*     1.3    75.2    -      -       -      +
     91A  LEU*     1.3    63.1    +      -       -      +
     93A  THR*     3.5     6.8    +      -       -      +
     94A  ALA*     3.2    20.4    +      -       -      +
    127A  THR      5.0     1.0    -      -       -      +
    130A  ALA*     4.7    13.0    -      -       +      +
    131A  VAL*     3.8    22.2    -      -       +      +
     89B  ASN*     5.8     0.5    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     75A  LEU*     3.3    47.6    -      -       +      +
     76A  VAL*     3.7    15.0    -      -       +      +
     79A  ASN*     4.8     4.9    -      -       +      +
     87A  TYR*     2.7    24.6    +      -       +      +
     88A  LEU*     5.6     3.6    -      -       +      -
     90A  THR*     1.3    76.3    -      -       -      +
     92A  SER*     1.3    56.3    +      -       -      +
     94A  ALA*     3.1     5.6    +      -       +      +
     95A  LEU*     2.8    46.3    +      -       +      +
    131A  VAL*     4.3    25.8    -      -       +      -
    175A  LEU*     5.4     2.2    -      -       +      -
    179A  LEU*     3.5    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  LEU      2.6    29.5    +      -       -      -
     89A  ASN*     3.2    11.4    +      -       -      -
     91A  LEU*     1.3    72.4    -      -       -      +
     93A  THR*     1.3    53.0    -      -       -      +
     95A  LEU*     3.7     6.6    -      -       -      +
     96A  ASN*     2.8    36.3    +      -       -      +
    176A  ARG*     3.7    16.3    +      -       -      -
    179A  LEU*     3.8    19.3    -      -       -      +
    180A  SER*     4.8     3.5    +      -       -      -
    183A  LEU*     4.2     7.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  ASN*     2.9    17.7    +      -       -      +
     90A  THR*     3.6     7.8    -      -       -      +
     92A  SER*     1.3    76.9    -      -       -      +
     94A  ALA*     1.3    61.4    +      -       -      +
     96A  ASN*     3.4     6.3    +      -       -      +
     97A  ILE*     3.2    25.3    +      -       +      +
    126A  SER      5.5     0.7    -      -       -      +
    127A  THR*     4.0    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  THR      3.2     7.6    +      -       -      +
     91A  LEU*     3.1    10.8    +      -       +      +
     93A  THR*     1.3    77.1    -      -       -      +
     95A  LEU*     1.3    60.9    +      -       +      +
     97A  ILE*     3.1     4.2    +      -       -      +
     98A  LEU*     2.8    36.9    +      -       +      +
    127A  THR*     3.5    30.9    +      -       -      +
    128A  VAL*     4.0     5.5    -      -       +      +
    131A  VAL*     3.6    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  LEU*     5.2     1.1    -      -       +      -
     75A  LEU*     4.9    10.8    -      -       +      -
     91A  LEU*     2.8    28.0    +      -       +      +
     92A  SER      3.7     4.3    -      -       -      +
     94A  ALA*     1.3    75.6    -      -       -      +
     96A  ASN*     1.3    58.1    +      -       -      +
     98A  LEU*     4.2    14.1    -      -       +      -
     99A  GLU*     2.9    27.4    +      -       -      +
    172A  VAL*     3.2    30.0    -      -       +      +
    175A  LEU*     3.9    22.2    -      -       +      -
    176A  ARG*     3.6    43.5    -      -       +      +
    179A  LEU*     3.8    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  SER      2.8    19.1    +      -       -      +
     93A  THR*     3.5     8.7    -      -       -      +
     94A  ALA      3.2     0.2    -      -       -      -
     95A  LEU*     1.3    79.4    -      -       -      +
     97A  ILE*     1.3    70.6    +      -       -      +
     99A  GLU*     3.3     8.3    +      -       -      +
    100A  LYS*     3.3    29.1    +      -       -      +
    176A  ARG*     3.6    31.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  THR*     3.2    15.0    +      -       +      +
     94A  ALA      3.1     7.0    +      -       -      +
     96A  ASN*     1.3    84.8    -      -       -      +
     98A  LEU*     1.3    63.2    +      -       -      +
    100A  LYS*     3.1    25.5    +      -       +      +
    101A  TYR*     3.1    43.7    +      -       +      -
    123A  VAL*     4.2    21.5    -      -       +      -
    127A  THR*     3.5    35.2    -      -       +      +
    128A  VAL*     3.8     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  LEU*     5.6     2.2    -      -       +      -
     94A  ALA*     2.8    28.1    +      -       +      +
     95A  LEU*     3.2    18.1    +      -       +      +
     97A  ILE*     1.3    76.4    -      -       -      +
     99A  GLU*     1.3    57.8    +      -       -      +
    101A  TYR*     3.2     5.0    +      -       +      +
    102A  GLY      3.1    10.2    +      -       -      -
    128A  VAL*     3.9    19.1    -      -       +      -
    131A  VAL*     5.9     0.9    -      -       +      -
    134A  GLY*     3.9    21.8    -      -       -      +
    137A  VAL*     3.9    42.4    -      -       +      -
    138A  LEU*     4.0    19.1    -      -       +      -
    141A  TYR*     2.6    28.2    +      -       +      +
    172A  VAL*     4.1     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  LEU      2.9    12.6    +      -       -      +
     96A  ASN*     3.4    12.9    -      -       -      +
     97A  ILE      3.2     0.2    -      -       -      -
     98A  LEU*     1.3    73.0    -      -       -      +
    100A  LYS*     1.3    61.5    +      -       +      +
    102A  GLY*     3.2     1.4    +      -       -      -
    103A  ARG*     2.7    73.5    +      -       -      +
    141A  TYR*     4.0     5.8    -      -       -      -
    169A  THR*     3.9    15.8    -      -       +      +
    172A  VAL*     3.8     6.4    -      -       +      +
    173A  LEU*     4.0    18.5    -      -       +      +
    176A  ARG*     2.7    39.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  ASN*     3.3    20.1    +      -       -      +
     97A  ILE*     3.1    27.9    +      -       +      +
     99A  GLU*     1.3    76.2    -      -       +      +
    101A  TYR*     1.3    64.7    +      -       +      +
    103A  ARG*     4.5     9.4    -      -       -      +
    104A  ASN*     2.9    41.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  ILE*     3.1    46.0    +      -       +      +
     98A  LEU*     3.2    12.7    +      -       +      +
    100A  LYS*     1.3    76.3    -      -       -      +
    102A  GLY*     1.3    61.2    +      -       -      +
    104A  ASN*     3.8    10.7    -      -       +      +
    105A  LEU*     3.4    27.1    +      -       -      +
    117A  VAL*     3.8    41.2    -      -       +      +
    121A  ASN*     4.1     9.7    +      -       -      -
    123A  VAL*     5.3     1.9    -      -       -      +
    124A  PHE*     3.9    20.5    +      +       +      +
    128A  VAL*     4.3     9.0    -      -       +      -
    138A  LEU*     4.0    19.1    -      -       +      -
    141A  TYR*     4.1    12.6    -      -       +      -
    143A  TYR*     4.8     9.8    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LEU      3.1    11.1    +      -       -      -
     99A  GLU      3.2     2.4    +      -       -      -
    101A  TYR*     1.3    73.9    -      -       -      +
    103A  ARG*     1.3    64.7    +      -       -      +
    105A  LEU*     3.1    11.4    +      -       -      +
    106A  LEU*     3.4     3.7    +      -       -      +
    141A  TYR*     3.5    21.0    -      -       -      -
    165A  VAL*     3.4    18.1    -      -       -      +
    169A  THR*     3.3    22.7    -      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     40A  LEU*     3.4    22.0    -      -       +      +
     44A  SER*     2.6    52.3    +      -       -      +
     45A  GLY*     3.4    11.0    -      -       -      -
     46A  GLN      2.9    29.0    +      -       -      -
     47A  ALA*     4.7     3.2    -      -       -      +
     48A  PHE*     4.7     1.6    -      -       -      +
     99A  GLU*     2.7    54.1    +      -       -      +
    100A  LYS*     4.0     7.9    -      -       -      +
    102A  GLY*     1.3    72.7    -      -       -      +
    104A  ASN*     1.3    66.6    +      -       -      +
    106A  LEU*     3.0    18.4    +      -       -      -
    107A  SER*     3.1    10.2    +      -       -      -
    169A  THR*     4.0    11.4    -      -       +      +
    173A  LEU*     4.1    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  LYS*     2.9    36.2    +      -       -      +
    101A  TYR*     3.8    11.5    -      -       +      +
    103A  ARG*     1.3    78.2    -      -       -      +
    105A  LEU*     1.3    62.5    +      -       +      +
    107A  SER*     3.3    21.4    +      -       -      -
    110A  ARG*     3.5    11.6    -      -       -      +
    111A  PRO*     3.6    31.8    -      -       +      +
    114A  TRP*     6.3     0.2    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    101A  TYR      3.4    16.4    -      -       -      +
    102A  GLY      3.1     7.8    +      -       -      +
    104A  ASN*     1.3    77.3    -      -       +      +
    106A  LEU*     1.3    62.0    +      -       -      +
    107A  SER      3.4     0.2    -      -       -      -
    110A  ARG*     3.6    22.2    +      -       -      +
    114A  TRP*     3.6    38.4    -      -       +      +
    141A  TYR*     3.7    38.6    -      -       +      +
    143A  TYR*     3.7    24.5    -      -       +      +
    153A  PHE*     4.2     4.9    -      -       +      -
    160A  PRO*     3.8    21.8    -      -       +      +
    165A  VAL*     4.0    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  LEU*     4.1    28.3    -      -       +      +
     41A  ARG*     4.6    11.6    -      -       +      +
     44A  SER*     3.7    16.2    +      -       -      -
    102A  GLY      3.7    14.4    -      -       -      +
    103A  ARG*     3.0    14.7    +      -       -      +
    105A  LEU*     1.3    78.3    -      -       -      +
    107A  SER*     1.3    64.0    +      -       -      +
    108A  PRO*     3.6     2.6    -      -       -      +
    160A  PRO*     6.4     0.2    -      -       +      -
    162A  GLU*     3.8    41.3    -      -       +      +
    165A  VAL*     3.8    13.0    -      -       +      -
    166A  ALA*     4.1    20.9    -      -       +      -
    169A  THR*     4.5     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  SER*     3.4    11.0    -      -       -      -
    103A  ARG      3.1     7.2    +      -       -      -
    104A  ASN*     3.3    20.5    +      -       -      -
    105A  LEU      4.6     0.3    -      -       -      +
    106A  LEU*     1.3    80.1    -      -       -      +
    108A  PRO*     1.4    75.6    -      -       -      +
    109A  GLN*     2.8    26.3    +      -       -      +
    110A  ARG*     3.8    18.7    +      -       -      +
    111A  PRO*     5.2     0.9    -      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il