Contacts of the helix formed by residues 114 - 138 (chain X) in PDB entry 6CP3


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 HIS 114 (chain X).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      98  PHE*     6.3     1.4    -      -       -      -
     128  GLN*     3.2    44.3    +      -       -      +
     29X  PHE*     4.3     8.9    -      +       +      +
    109X  PHE*     3.5    32.8    -      +       -      -
    110X  ALA*     3.7    18.9    +      -       +      +
    111X  LEU      4.0    10.3    -      -       -      +
    112X  SER      3.2     1.2    -      -       -      -
    113X  ALA*     1.3    75.2    -      -       -      +
    115X  LEU*     1.3    64.4    +      -       -      +
    116X  VAL*     3.2     3.8    -      -       +      +
    117X  PHE*     3.2    11.9    +      -       +      +
    118X  ILE*     3.1    25.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 115 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67S  MET*     5.3     0.7    -      -       +      -
    113X  ALA      3.0    26.1    +      -       -      +
    114X  HIS*     1.3    68.9    -      -       -      +
    116X  VAL*     1.3    62.0    +      -       +      +
    118X  ILE*     4.5     4.9    -      -       +      +
    119X  ILE*     2.9    61.2    +      -       +      +
    174X  GLY      3.9    10.3    -      -       -      +
    175X  LEU*     4.1     2.0    -      -       +      -
    178X  GLY*     3.5    25.4    -      -       -      +
    179X  SER*     3.3    37.0    -      -       -      +
    182X  LEU*     3.9    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 116 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      98  PHE*     3.6    61.2    -      -       +      +
     128  GLN*     5.7     1.8    -      -       -      +
     138  LEU*     5.8     2.2    -      -       +      -
     27J  MET*     4.6    14.8    -      -       +      -
    114X  HIS*     3.2     3.7    -      -       +      -
    115X  LEU*     1.3    78.2    -      -       +      +
    117X  PHE*     1.3    57.7    +      -       -      +
    119X  ILE*     4.4     1.4    -      -       -      +
    120X  SER*     2.9    32.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 117 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     128  GLN*     3.6    35.8    +      -       +      +
     138  LEU*     3.9    18.6    -      -       +      +
     168  GLY*     3.6    28.9    -      -       -      -
     178  PHE*     4.5     9.4    -      +       -      -
     208  MET*     4.9     7.6    -      -       +      -
     29X  PHE*     4.2    20.0    -      +       +      -
     95X  PHE*     3.7    35.2    -      +       -      -
    111X  LEU      5.3     1.8    -      -       -      -
    114X  HIS*     3.2    19.1    +      -       +      +
    116X  VAL*     1.3    81.3    -      -       -      +
    118X  ILE*     1.3    71.3    +      -       +      +
    120X  SER*     3.3     6.4    +      -       -      -
    121X  LEU*     2.9    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 118 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95X  PHE*     4.8    11.2    -      -       +      -
     96X  ILE*     6.0     5.2    -      -       +      -
    111X  LEU      5.6     0.2    -      -       -      +
    112X  SER*     3.3    42.0    -      -       -      +
    114X  HIS      3.1    13.7    +      -       -      +
    115X  LEU*     4.3     4.7    -      -       -      +
    117X  PHE*     1.3    96.6    -      -       +      +
    119X  ILE*     1.3    62.0    +      -       -      +
    121X  LEU*     3.2    14.5    +      -       +      +
    122X  SER*     2.9    25.6    +      -       -      -
    174X  GLY*     4.2    23.8    -      -       -      +
    177X  LEU*     5.1     8.1    -      -       +      -
    178X  GLY*     4.8     7.6    -      -       -      +
    234X  TRP*     4.5    11.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 119 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115X  LEU*     2.9    37.7    +      -       +      +
    116X  VAL*     4.4     1.1    -      -       -      +
    118X  ILE*     1.3    71.9    -      -       -      +
    120X  SER*     1.3    59.3    +      -       -      +
    122X  SER*     3.2     7.7    +      -       -      -
    123X  ILE*     2.8    44.8    +      -       +      +
    171X  ILE*     4.5    15.9    -      -       +      +
    174X  GLY*     3.7     4.7    -      -       -      +
    175X  LEU*     3.5    54.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 120 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     138  LEU*     3.4    28.9    -      -       -      +
     178  PHE*     3.9     6.7    -      -       -      -
     23J  VAL*     3.5    14.3    -      -       -      +
     27J  MET*     4.9     7.2    -      -       -      -
    116X  VAL      2.9    21.5    +      -       -      -
    117X  PHE*     3.4     9.0    -      -       -      -
    119X  ILE*     1.3    76.3    -      -       -      +
    121X  LEU*     1.3    56.3    +      -       -      +
    123X  ILE*     3.2    12.2    +      -       -      +
    124X  VAL*     3.0    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 121 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     178  PHE*     4.9    12.0    -      -       +      -
     208  MET*     3.7    42.0    -      -       +      -
     92X  LEU*     4.6     8.1    -      -       +      -
     95X  PHE*     4.5    12.6    -      -       +      -
     96X  ILE*     4.8     9.0    -      -       +      -
    117X  PHE*     2.9    19.8    +      -       +      +
    118X  ILE*     3.2    17.9    +      -       +      +
    120X  SER*     1.3    76.0    -      -       -      +
    122X  SER*     1.3    56.9    +      -       -      +
    124X  VAL*     3.2    11.7    +      -       +      +
    125X  ILE*     2.9    50.5    +      -       +      +
    234X  TRP*     4.5    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 122 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118X  ILE      2.9    12.5    +      -       -      -
    119X  ILE*     3.2     9.4    +      -       -      -
    121X  LEU*     1.3    76.5    -      -       -      +
    123X  ILE*     1.3    58.8    +      -       -      +
    125X  ILE*     3.3     6.9    +      -       -      +
    126X  TRP*     2.9    30.3    +      -       -      +
    170X  ALA*     2.9    27.2    +      -       -      -
    173X  LEU*     3.9    10.9    -      -       -      +
    174X  GLY*     3.7    15.9    +      -       -      -
    234X  TRP*     3.7    20.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 123 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23J  VAL*     3.7    22.7    -      -       +      -
    119X  ILE*     2.8    37.1    +      -       +      +
    120X  SER*     3.6     9.0    -      -       -      +
    122X  SER*     1.3    73.4    -      -       -      +
    124X  VAL*     1.3    60.6    +      -       -      +
    126X  TRP*     3.8     8.6    -      -       +      +
    127X  LEU*     2.9    43.1    +      -       +      +
    170X  ALA*     5.5    10.5    -      -       +      +
    171X  ILE*     5.7     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 124 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     178  PHE*     3.6    30.1    -      -       +      -
     16J  PHE*     3.4    29.0    -      -       +      +
     19J  ALA*     3.3     9.3    -      -       -      +
     20J  GLY*     3.6    13.7    -      -       -      +
     23J  VAL*     3.7    21.5    -      -       +      -
    120X  SER      3.0    18.5    +      -       -      +
    121X  LEU*     3.2    13.9    +      -       +      +
    123X  ILE*     1.3    75.9    -      -       -      +
    125X  ILE*     1.3    59.5    +      -       +      +
    128X  GLY*     2.9    25.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 125 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16J  PHE*     3.1    19.7    -      -       +      -
     88X  MET*     6.2     0.4    -      -       +      -
     92X  LEU*     3.8    32.5    -      -       +      -
    121X  LEU*     2.9    33.8    +      -       +      +
    122X  SER*     3.3     5.8    +      -       -      +
    124X  VAL*     1.3    77.5    -      -       +      +
    126X  TRP*     1.3    53.3    +      -       -      +
    129X  ASN*     2.7    49.7    +      -       -      +
    173X  LEU*     5.6     5.6    -      -       +      -
    234X  TRP*     3.6    33.0    -      -       +      +
    238X  THR*     4.0    18.4    -      -       -      +
    241X  TYR*     6.4     0.9    -      -       +      -
    242X  LEU*     5.5     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 126 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122X  SER      2.9    17.4    +      -       -      +
    123X  ILE*     3.9     6.1    -      -       +      +
    125X  ILE*     1.3    76.5    -      -       -      +
    127X  LEU*     1.3    91.8    +      -       +      +
    129X  ASN*     3.2    15.3    +      -       +      +
    130X  THR*     3.0    42.4    +      -       +      +
    166X  TYR*     3.0    61.7    +      +       -      -
    167X  PHE*     4.0    13.5    -      -       +      -
    169X  ARG*     4.4    16.3    -      -       +      +
    170X  ALA*     3.5    36.6    -      -       +      -
    241X  TYR*     6.3     0.7    -      +       -      -
----------------------------------------------------------
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Residues in contact with LEU 127 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19J  ALA*     3.7    15.9    -      -       +      +
     22J  ALA*     5.5     6.5    -      -       +      -
     23J  VAL*     4.0    14.8    -      -       +      -
    123X  ILE*     2.9    38.0    +      -       +      +
    126X  TRP*     1.3    98.9    -      -       +      +
    128X  GLY*     1.3    61.4    +      -       -      +
    130X  THR*     2.5    27.0    +      -       +      +
    131X  ILE*     2.9    20.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 128 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15J  PRO*     3.6    30.0    -      -       -      +
     16J  PHE*     3.7    23.1    -      -       -      -
     19J  ALA*     3.5     1.0    -      -       -      +
    124X  VAL      2.9    12.4    +      -       -      -
    127X  LEU*     1.3    74.1    -      -       -      +
    129X  ASN*     1.3    59.0    +      -       -      +
    131X  ILE*     3.4     0.4    +      -       -      -
    132X  LEU*     2.9    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 129 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16J  PHE*     3.2    20.3    -      -       -      -
    125X  ILE*     2.7    41.2    +      -       -      +
    126X  TRP*     3.2    17.5    +      -       +      +
    128X  GLY*     1.3    76.4    -      -       -      +
    130X  THR*     1.3    58.1    +      -       +      +
    132X  LEU*     3.4     5.8    +      -       -      +
    133X  GLY*     3.0    26.3    +      -       -      -
    141X  PHE*     4.6     1.0    -      -       -      -
    238X  THR*     4.8     0.2    +      -       -      -
    241X  TYR*     4.7    15.9    -      -       +      +
    242X  LEU*     3.4    23.7    -      -       -      +
    245X  ALA*     3.9    24.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 130 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126X  TRP*     3.0    38.0    +      -       +      +
    127X  LEU*     2.5    33.9    +      -       +      +
    129X  ASN*     1.3    77.7    -      -       +      +
    131X  ILE*     1.3    59.7    +      -       -      +
    133X  GLY      3.4     1.0    +      -       -      -
    134X  LEU*     2.9    45.8    +      -       -      +
    141X  PHE*     4.3     3.5    -      -       -      -
    166X  TYR*     3.3    31.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 131 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14J  TRP*     5.3     6.7    -      -       +      +
     15J  PRO*     3.7    24.2    -      -       +      +
     18J  VAL*     5.1    15.7    -      -       +      -
     19J  ALA*     5.7     2.0    -      -       +      -
    127X  LEU*     2.9    19.3    +      -       +      +
    128X  GLY*     3.9     4.0    -      -       -      +
    130X  THR*     1.3    84.9    +      -       -      +
    132X  LEU*     1.3    58.4    +      -       -      +
    134X  LEU*     4.0    11.3    -      -       +      +
    135X  TYR*     2.9    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 132 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12J  VAL      4.9     2.5    -      -       -      +
     14J  TRP*     4.8    15.0    -      -       +      +
     15J  PRO*     3.8    22.9    -      -       +      +
     16J  PHE*     4.3    16.6    -      -       +      -
     85X  TYR*     3.3    43.1    -      -       +      +
    128X  GLY      2.9    17.9    +      -       -      +
    129X  ASN*     3.7     7.4    -      -       -      +
    130X  THR      3.3     0.2    -      -       -      -
    131X  ILE*     1.3    77.9    -      -       -      +
    133X  GLY*     1.3    57.2    +      -       -      +
    135X  TYR*     3.4     4.5    +      -       +      +
    136X  LYS*     3.0    36.8    +      -       -      +
    242X  LEU*     5.7     3.6    -      -       +      -
    245X  ALA*     5.7     3.6    -      -       +      +
    246X  VAL*     4.4    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 133 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129X  ASN      3.0    12.0    +      -       -      -
    132X  LEU*     1.3    76.0    -      -       -      +
    134X  LEU*     1.3    56.7    +      -       -      +
    136X  LYS*     3.4     4.0    +      -       -      -
    137X  HIS*     2.9    34.7    +      -       -      +
    141X  PHE*     3.5    19.8    -      -       -      -
    245X  ALA      3.5    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 134 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130X  THR*     2.9    31.4    +      -       -      +
    131X  ILE*     4.0    12.6    -      -       +      +
    133X  GLY*     1.3    73.9    -      -       -      +
    135X  TYR*     1.3    61.5    +      -       -      +
    138X  GLY*     2.9    48.2    +      -       -      +
    141X  PHE*     3.6    24.5    -      -       +      -
    142X  PHE*     3.6    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 135 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14J  TRP*     3.9    36.6    -      +       +      +
    131X  ILE*     2.9    20.9    +      -       +      +
    132X  LEU*     3.9     5.4    -      -       +      +
    134X  LEU*     1.3    78.3    -      -       -      +
    136X  LYS*     1.3    64.0    +      -       -      +
    138X  GLY      4.7     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 136 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81X  ASN*     5.8     3.4    -      -       -      +
     85X  TYR*     5.4     6.2    +      -       -      -
    132X  LEU*     3.0    26.2    +      -       -      +
    133X  GLY*     4.3     0.7    -      -       -      -
    134X  LEU      3.4     0.2    -      -       -      -
    135X  TYR*     1.3    83.3    -      -       +      +
    137X  HIS*     1.3    78.2    +      -       +      +
    245X  ALA      5.3     0.4    -      -       -      -
    246X  VAL*     3.3    53.2    -      -       +      +
    247X  TYR*     5.5     2.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 137 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133X  GLY      2.9    22.0    +      -       -      +
    136X  LYS*     1.3    97.6    +      -       +      +
    138X  GLY*     1.3    65.7    +      -       -      +
    139X  TRP      3.2     4.0    +      -       -      -
    140X  VAL*     3.4    24.5    +      -       +      +
    141X  PHE*     3.5    25.1    -      +       +      +
    245X  ALA      4.2     3.8    -      -       -      -
    246X  VAL      2.9    26.8    +      -       -      -
    247X  TYR*     5.0     1.3    -      +       -      -
    248X  LEU*     3.4    36.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 138 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134X  LEU*     2.9    45.9    +      -       -      +
    135X  TYR      4.6     1.0    +      -       -      -
    136X  LYS      3.8     0.6    -      -       -      -
    137X  HIS*     1.3    76.0    -      -       -      +
    139X  TRP*     1.3    64.1    +      -       -      +
    141X  PHE      3.8     2.8    +      -       -      -
    142X  PHE*     4.6     1.7    -      -       -      -
----------------------------------------------------------
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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