Contacts of the helix formed by residues 163 - 186 (chain C) in PDB entry 5AO3


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 ASN 163 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  LYS*     4.9     4.9    -      -       -      +
    154A  TYR*     2.8    33.4    +      -       -      +
    161A  SER*     4.3     6.3    -      -       -      -
    144C  LEU      3.5    12.8    -      -       -      +
    145C  ARG      3.1    17.9    +      -       -      -
    146C  TYR*     5.0     0.8    -      -       -      -
    147C  ILE      3.1    15.1    +      -       -      +
    148C  LYS*     3.4    34.2    +      -       -      +
    149C  GLN*     4.0     9.2    -      -       -      +
    161C  SER      3.4     2.8    +      -       -      +
    162C  HIS*     1.3    77.4    -      -       -      +
    164C  ARG*     1.3    67.0    +      -       -      +
    165C  PHE      3.1     1.9    +      -       -      -
    166C  GLU*     2.9    22.6    +      -       -      +
    167C  HIS*     3.7     3.6    +      -       -      +
    424C  ASP*     5.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 164 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  LEU*     3.4    30.1    -      -       +      +
    147C  ILE*     2.9    31.9    +      -       +      +
    148C  LYS      4.7     0.2    -      -       -      +
    149C  GLN*     3.1    41.6    +      -       -      +
    163C  ASN*     1.3    72.6    -      -       -      +
    165C  PHE*     1.3    50.3    -      -       -      +
    166C  GLU      3.5     0.2    -      -       -      -
    167C  HIS*     3.4    11.1    +      -       -      +
    168C  SER*     2.7    38.0    +      -       -      +
    207C  ASP*     3.1    26.3    +      -       -      -
    210C  HIS*     3.0    34.5    +      -       +      -
    214C  SER*     2.8    27.2    +      -       -      +
    215C  HIS*     3.6    17.6    +      -       -      -
    315C  TYR*     5.9     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 165 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  TYR*     3.9     3.6    -      +       -      -
    158A  PRO*     4.2    11.9    -      -       +      -
    118C  ILE*     5.8     2.7    -      -       +      -
    136C  ILE*     4.1     6.7    -      -       +      -
    141C  PHE*     3.8    32.8    -      +       -      -
    142C  GLN*     4.0    21.5    -      -       -      -
    144C  LEU*     3.2    28.7    +      -       -      +
    145C  ARG*     3.5    52.5    -      -       +      +
    163C  ASN      3.1     0.8    +      -       -      -
    164C  ARG*     1.3    74.9    -      -       -      +
    166C  GLU*     1.3    80.5    +      -       -      +
    168C  SER*     3.1     7.3    +      -       -      -
    169C  LEU*     3.1    47.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 166 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  TYR*     2.7    24.8    +      -       -      -
    158A  PRO*     3.5    39.0    -      -       +      +
    159A  GLY*     5.3     1.7    -      -       -      +
    161A  SER*     3.5    17.2    +      -       -      -
    120C  ASP*     4.8     1.1    -      -       -      +
    162C  HIS*     3.5     7.3    -      -       +      +
    163C  ASN      2.9    37.0    +      -       -      +
    165C  PHE*     1.3    81.7    +      -       -      +
    167C  HIS*     1.3    63.1    +      -       -      +
    169C  LEU*     3.2     7.9    +      -       -      +
    170C  GLY      3.1    17.3    +      -       -      -
    318C  ARG*     3.8    32.2    +      -       -      +
    322C  HIS*     6.1     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 167 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149C  GLN*     3.3    29.3    +      -       -      +
    163C  ASN      4.1     1.3    -      -       -      +
    164C  ARG*     3.4    22.0    +      -       -      +
    165C  PHE      3.2     0.6    -      -       -      -
    166C  GLU*     1.3    81.6    -      -       -      +
    168C  SER*     1.3    63.7    +      -       -      +
    170C  GLY      3.1     1.7    +      -       -      -
    171C  VAL*     3.0    33.7    +      -       +      +
    206C  HIS*     3.4     5.0    +      +       -      -
    207C  ASP*     3.0    26.8    +      -       -      -
    311C  ASP*     2.8    39.5    +      -       -      -
    314C  ASP*     2.4    32.6    +      -       -      +
    315C  TYR*     3.9    13.9    -      +       +      +
    318C  ARG*     4.1     7.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 168 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141C  PHE*     3.9    11.9    -      -       -      -
    144C  LEU*     3.5    15.7    -      -       -      +
    164C  ARG      2.7    23.2    +      -       -      -
    165C  PHE      3.1     5.8    +      -       -      -
    167C  HIS*     1.3    76.2    -      -       -      +
    169C  LEU*     1.3    64.3    +      -       -      +
    171C  VAL*     3.5     1.8    +      -       -      +
    172C  GLY      3.1    17.0    +      -       -      -
    203C  GLY      4.6     4.5    -      -       -      -
    204C  LEU*     3.3    36.5    +      -       -      +
    206C  HIS*     4.7     2.0    -      -       -      -
    207C  ASP*     3.6    15.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 169 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158A  PRO*     4.4    15.0    -      -       +      -
    118C  ILE*     4.2    22.7    -      -       +      -
    120C  ASP*     5.9     1.3    -      -       -      +
    126C  ILE*     4.4    16.5    -      -       +      +
    128C  LEU*     4.4    13.7    -      -       +      +
    136C  ILE*     3.7    36.1    -      -       +      -
    141C  PHE*     4.8     3.6    -      -       +      -
    165C  PHE*     3.1    45.2    +      -       +      +
    166C  GLU      3.2     7.4    +      -       -      +
    168C  SER*     1.3    75.0    -      -       -      +
    170C  GLY*     1.3    58.3    +      -       -      +
    172C  GLY*     3.2     2.4    +      -       -      -
    173C  TYR*     2.8    28.9    +      -       -      +
    204C  LEU*     3.7    13.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 170 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  HIS*     3.7    16.2    -      -       -      -
    126C  ILE*     4.7     2.8    -      -       -      +
    166C  GLU      3.1    12.3    +      -       -      -
    167C  HIS      3.1     1.3    +      -       -      -
    169C  LEU*     1.3    73.9    -      -       -      +
    171C  VAL*     1.3    58.9    +      -       -      +
    173C  TYR*     3.1     5.6    +      -       -      +
    174C  LEU*     2.8    34.4    +      -       -      +
    314C  ASP*     3.4    22.7    -      -       -      -
    318C  ARG*     4.5     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 171 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167C  HIS*     3.0    42.2    +      -       +      +
    168C  SER      3.9     0.9    -      -       -      +
    170C  GLY*     1.3    75.4    -      -       -      +
    172C  GLY*     1.3    57.9    -      -       -      +
    174C  LEU*     3.2     5.9    +      -       -      +
    175C  ALA*     2.8    29.1    +      -       -      +
    203C  GLY*     3.4    32.5    -      -       -      +
    206C  HIS*     3.5    10.8    -      -       +      +
    301C  VAL*     4.7     3.1    -      -       +      -
    310C  VAL*     4.0    12.2    -      -       +      +
    311C  ASP*     3.4    29.2    -      -       +      +
    314C  ASP*     3.9     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 172 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  LEU*     6.3     2.5    -      -       -      -
    132C  LEU*     6.2     1.8    -      -       -      -
    168C  SER      3.1    13.4    +      -       -      -
    169C  LEU      3.6     4.0    -      -       -      -
    171C  VAL*     1.3    76.6    -      -       -      +
    173C  TYR*     1.3    62.5    +      -       -      +
    175C  ALA*     3.8     0.8    -      -       -      +
    176C  GLY      3.4    15.4    +      -       -      -
    200C  GLN*     3.4    36.9    +      -       -      +
    203C  GLY*     4.0     1.7    -      -       -      -
    204C  LEU*     3.9    11.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 173 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  HIS*     3.6    40.2    +      +       +      -
    125C  HIS      3.7    16.9    +      -       -      -
    126C  ILE*     3.6    37.2    -      -       +      +
    127C  GLU      5.0     3.6    -      -       -      -
    128C  LEU*     6.2     0.6    -      -       -      +
    169C  LEU      2.8    14.4    +      -       -      +
    170C  GLY      3.4     6.1    -      -       -      +
    172C  GLY*     1.3    78.0    -      -       -      +
    174C  LEU*     1.3    79.1    +      -       +      +
    176C  GLY*     3.5     0.9    +      -       -      -
    177C  CYS*     3.1    47.5    +      -       -      -
    200C  GLN*     4.6     5.6    +      -       -      +
    331C  TYR*     4.3     8.3    +      +       -      -
----------------------------------------------------------
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Residues in contact with LEU 174 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  HIS*     3.8    19.3    -      -       +      -
    170C  GLY      2.8    22.1    +      -       -      +
    171C  VAL      3.7     2.0    -      -       -      +
    173C  TYR*     1.3    83.9    -      -       +      +
    175C  ALA*     1.3    65.4    +      -       -      +
    177C  CYS*     3.2     5.4    +      -       -      +
    178C  LEU*     3.0    25.5    +      -       -      +
    310C  VAL*     3.5    38.5    -      -       +      +
    313C  TRP*     3.8    21.5    -      -       +      -
    314C  ASP*     4.0     5.6    -      -       +      +
    331C  TYR*     3.7    35.9    -      -       +      -
    335C  ILE*     4.6     8.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 175 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171C  VAL      2.8    21.0    +      -       -      +
    172C  GLY*     3.8     6.3    -      -       -      +
    174C  LEU*     1.3    74.4    -      -       -      +
    176C  GLY*     1.3    63.7    +      -       -      +
    178C  LEU*     3.1     2.4    +      -       -      +
    179C  VAL*     2.9    28.2    +      -       -      +
    199C  VAL*     3.6    35.9    -      -       +      +
    200C  GLN*     4.1     1.1    -      -       -      -
    300C  ILE*     4.1     6.0    -      -       +      +
    301C  VAL*     4.1    11.2    -      -       +      -
    310C  VAL*     3.9     9.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 176 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172C  GLY      3.4     7.5    +      -       -      -
    174C  LEU      3.3     0.6    -      -       -      -
    175C  ALA*     1.3    77.0    -      -       -      +
    177C  CYS*     1.3    63.0    +      -       -      +
    179C  VAL*     4.0     4.7    -      -       -      +
    180C  HIS*     2.9    32.3    +      -       -      +
    196C  VAL*     4.4     6.6    -      -       -      +
    200C  GLN*     3.4    33.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 177 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173C  TYR*     3.1    60.9    +      -       -      -
    174C  LEU*     3.2    13.2    +      -       -      +
    176C  GLY*     1.3    75.5    -      -       -      +
    178C  LEU*     1.3    61.6    +      -       -      +
    180C  HIS*     4.0     4.4    -      -       -      +
    181C  ALA*     3.3    21.8    +      -       -      +
    331C  TYR*     5.9     1.3    -      -       -      -
    335C  ILE*     4.1    20.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 178 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174C  LEU      3.0    15.9    +      -       -      +
    175C  ALA      3.8     2.5    -      -       -      +
    177C  CYS*     1.3    76.5    -      -       -      +
    179C  VAL*     1.3    65.2    +      -       -      +
    181C  ALA*     3.2     2.8    +      -       +      +
    182C  LEU*     3.1    32.6    +      -       +      +
    300C  ILE*     4.4    13.0    -      -       +      -
    310C  VAL*     4.3    20.9    -      -       +      -
    313C  TRP*     4.3    11.7    -      -       +      -
    334C  PHE*     6.4     0.2    -      -       +      -
    335C  ILE*     3.8    32.8    -      -       +      +
    338C  ALA*     4.2    21.5    -      -       +      -
    349C  ILE*     4.4    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 179 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175C  ALA      2.9    17.9    +      -       -      +
    176C  GLY*     4.0     3.8    -      -       -      +
    178C  LEU*     1.3    75.8    -      -       -      +
    180C  HIS*     1.3    62.9    +      -       -      +
    182C  LEU*     3.5     6.8    +      -       -      +
    183C  GLY*     3.2    19.2    +      -       -      -
    191C  ILE*     3.9    13.6    -      -       +      +
    196C  VAL*     3.6    33.2    -      -       +      +
    199C  VAL*     3.4    30.1    -      -       +      -
    297C  LEU*     3.9    22.0    -      -       +      -
    300C  ILE*     3.6    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 180 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176C  GLY      2.9    18.4    +      -       -      +
    177C  CYS*     4.0     4.5    -      -       -      +
    179C  VAL*     1.3    79.0    -      -       -      +
    181C  ALA*     1.3    58.2    +      -       -      +
    183C  GLY*     3.5     2.1    +      -       -      -
    184C  GLU*     3.0    53.5    +      -       +      +
    196C  VAL*     4.3    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 181 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177C  CYS      3.3    15.6    +      -       -      +
    178C  LEU*     3.2     6.2    +      -       +      +
    180C  HIS*     1.3    77.9    -      -       -      +
    182C  LEU*     1.3    65.5    +      -       +      +
    184C  GLU*     3.2     6.8    +      -       -      +
    185C  LYS*     3.2    32.6    +      -       +      +
    335C  ILE*     3.9    27.6    -      -       +      +
    336C  LYS*     5.9     1.3    -      -       -      -
    338C  ALA      5.9     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 182 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178C  LEU*     3.1    26.8    +      -       +      +
    179C  VAL*     3.8     5.8    -      -       -      +
    181C  ALA*     1.3    77.1    -      -       +      +
    183C  GLY*     1.3    56.7    +      -       -      +
    185C  LYS*     4.3     2.0    -      -       -      -
    186C  GLN*     3.0    36.6    +      -       -      +
    189C  LEU*     4.0     0.9    -      -       +      +
    191C  ILE*     4.1    10.5    -      -       +      -
    296C  PHE*     4.2    11.2    -      -       +      -
    300C  ILE*     4.4    12.1    -      -       +      -
    338C  ALA*     4.0    32.1    -      -       +      +
    339C  ARG*     4.1    11.7    -      -       -      -
    340C  VAL*     4.0    30.5    -      -       +      -
    349C  ILE*     4.1    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 183 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179C  VAL      3.2     9.5    +      -       -      -
    180C  HIS*     3.9     3.8    -      -       -      -
    181C  ALA      3.2     0.2    -      -       -      -
    182C  LEU*     1.3    77.2    -      -       -      +
    184C  GLU*     1.3    65.9    +      -       -      +
    186C  GLN      3.5    17.7    -      -       -      -
    187C  PRO*     3.5     9.7    -      -       -      +
    191C  ILE*     3.8    25.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 184 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180C  HIS*     3.0    43.7    +      -       +      +
    181C  ALA*     3.2     7.3    +      -       -      +
    183C  GLY*     1.3    82.3    -      -       -      +
    185C  LYS*     1.3    62.6    +      -       +      +
    187C  PRO*     4.1    10.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 185 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181C  ALA*     3.2    17.9    +      -       +      +
    182C  LEU*     4.4     1.6    -      -       -      +
    184C  GLU*     1.3    78.4    -      -       +      +
    186C  GLN*     1.3    69.8    +      -       +      +
    187C  PRO*     3.5     7.9    -      -       -      +
    188C  GLU*     4.6     0.9    -      -       -      +
    335C  ILE      5.8     0.7    -      -       -      +
    336C  LYS      4.1    20.2    -      -       -      +
    337C  PHE      5.9     0.2    -      -       -      -
    338C  ALA      4.1    16.2    -      -       -      +
    339C  ARG*     4.9    16.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 186 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182C  LEU*     3.0    18.4    +      -       -      +
    183C  GLY*     3.5     9.1    -      -       -      +
    184C  GLU      3.3     0.2    -      -       -      -
    185C  LYS*     1.3    91.1    -      -       +      +
    187C  PRO*     1.3    62.5    -      -       -      +
    188C  GLU*     3.0    30.2    +      -       -      +
    189C  LEU*     3.1    33.6    +      -       +      +
    190C  GLN      4.6     0.2    +      -       -      -
    191C  ILE      5.5     0.3    +      -       -      -
    339C  ARG*     3.4    33.1    -      -       +      +
    340C  VAL*     2.5    51.1    +      -       -      +
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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