Contacts of the helix formed by residues 150 - 176 (chain P) in PDB entry 2FJC


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 ASP 150 (chain P).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32P  ILE*     6.1     0.5    -      -       -      +
     35P  ILE*     3.9    12.9    -      -       +      +
     89P  ARG*     2.8    28.5    +      -       -      -
     93P  LEU*     4.0    14.3    -      -       -      +
    145P  ALA*     2.8    20.2    +      -       +      +
    148P  SER*     3.3    12.1    +      -       -      +
    149P  GLY*     1.3    72.4    -      -       -      +
    151P  ALA*     1.3    61.5    +      -       -      +
    152P  VAL      3.6     1.0    +      -       -      -
    153P  THR*     2.6    29.8    +      -       -      -
    154P  ASP*     3.0    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 151 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149P  GLY      2.8    13.5    +      -       -      +
    150P  ASP*     1.3    72.7    -      -       -      +
    152P  VAL*     1.3    59.4    +      -       +      +
    154P  ASP*     3.1     9.7    -      -       -      +
    155P  GLY*     2.9    26.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 152 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89P  ARG*     3.4    38.6    -      -       -      +
     92P  GLN*     4.7     4.3    -      -       -      +
    150P  ASP*     3.3     1.4    +      -       -      -
    151P  ALA*     1.3    79.0    -      -       +      +
    153P  THR*     1.3    62.2    +      -       -      +
    155P  GLY*     3.2     2.8    +      -       -      -
    156P  ILE*     2.9    35.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 153 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35P  ILE*     4.0    21.3    -      -       +      -
     39P  LEU*     4.3     9.0    -      -       +      -
     89P  ARG*     2.8    26.9    +      -       +      +
     93P  LEU*     4.0     3.6    -      -       -      +
    141P  THR*     4.4     3.4    -      -       +      -
    145P  ALA*     4.1     9.9    -      -       +      -
    150P  ASP*     2.6    34.1    +      -       -      -
    152P  VAL*     1.3    75.6    -      -       -      +
    154P  ASP*     1.3    64.5    +      -       -      +
    156P  ILE*     3.2     5.7    +      -       -      -
    157P  ILE*     2.9    48.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 154 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142P  GLN*     2.8    30.4    -      -       -      +
    145P  ALA*     3.7    11.2    -      -       +      +
    146P  ALA*     3.6    23.0    -      -       -      +
    150P  ASP      3.0    14.6    +      -       -      +
    151P  ALA*     3.1    15.4    -      -       -      +
    153P  THR*     1.3    76.5    -      -       -      +
    155P  GLY*     1.3    55.3    +      -       -      +
    157P  ILE*     3.4     3.5    +      -       -      +
    158P  THR*     2.7    43.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 155 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151P  ALA      2.9    13.7    +      -       -      -
    152P  VAL*     3.7     2.7    -      -       -      -
    154P  ASP*     1.3    80.1    -      -       -      +
    156P  ILE*     1.3    60.5    +      -       -      +
    158P  THR*     3.4     5.0    +      -       -      -
    159P  ASP*     2.9    34.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 156 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85P  THR*     4.1    27.8    -      -       -      +
     86P  ILE*     4.4     7.6    -      -       +      -
     89P  ARG*     3.8    36.8    -      -       +      -
     92P  GLN*     5.5     2.2    -      -       -      +
    152P  VAL*     2.9    28.5    +      -       +      +
    153P  THR*     3.2     5.1    +      -       -      +
    155P  GLY*     1.3    78.8    -      -       -      +
    157P  ILE*     1.3    73.8    +      -       +      +
    159P  ASP*     3.4     7.6    +      -       -      +
    160P  ILE*     3.3    28.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 157 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39P  LEU*     4.3    13.5    -      -       +      -
     42P  HIS*     4.9     0.9    -      -       +      -
     86P  ILE*     4.8     7.2    -      -       +      -
     89P  ARG*     6.0     0.9    -      -       +      -
    138P  PHE*     3.3    45.3    -      -       +      +
    141P  THR*     4.1    14.8    -      -       +      -
    142P  GLN*     3.6    18.8    -      -       +      -
    153P  THR*     2.9    41.3    +      -       +      +
    154P  ASP      4.0     2.0    -      -       -      +
    156P  ILE*     1.3    86.9    -      -       +      +
    158P  THR*     1.3    53.0    +      -       -      +
    160P  ILE*     3.1     8.9    +      -       -      +
    161P  LEU*     2.7    40.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 158 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142P  GLN*     3.8    11.4    +      -       -      +
    154P  ASP*     2.7    38.7    +      -       -      -
    155P  GLY*     3.8     6.1    -      -       -      -
    157P  ILE*     1.3    78.2    -      -       -      +
    159P  ASP*     1.3    59.6    +      -       -      +
    161P  LEU*     3.2    13.2    +      -       +      +
    162P  ARG*     2.9    37.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 159 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155P  GLY*     2.9    24.0    +      -       -      +
    156P  ILE*     3.6     7.5    -      -       -      +
    157P  ILE      3.2     0.2    -      -       -      -
    158P  THR*     1.3    78.4    -      -       -      +
    160P  ILE*     1.3    64.7    +      -       +      +
    162P  ARG*     3.2    30.2    +      -       -      +
    163P  THR*     3.3    18.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 160 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46P  LEU*     6.2     0.2    -      -       +      -
     82P  ALA*     3.7    29.8    -      -       +      -
     85P  THR*     4.3     3.4    -      -       -      +
     86P  ILE*     3.6    36.1    -      -       +      -
    138P  PHE*     3.8    30.3    -      -       +      -
    156P  ILE*     3.3    21.5    +      -       +      +
    157P  ILE*     3.1     9.7    +      -       -      +
    159P  ASP*     1.3    73.7    -      -       +      +
    161P  LEU*     1.3    66.5    +      -       -      +
    163P  THR*     3.0    12.4    +      -       -      +
    164P  LEU*     2.9    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 161 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135P  SER*     3.7    31.1    +      -       -      +
    138P  PHE*     3.3    29.8    -      -       +      -
    139P  SER*     3.9    22.0    -      -       -      +
    142P  GLN*     4.2    12.3    -      -       +      -
    157P  ILE*     2.7    29.9    +      -       +      +
    158P  THR*     3.2    16.6    +      -       +      +
    160P  ILE*     1.3    77.3    -      -       -      +
    162P  ARG*     1.3    56.4    +      -       -      +
    164P  LEU*     3.3     4.7    +      -       +      +
    165P  GLY*     2.9    26.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 162 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158P  THR*     2.9    21.9    +      -       +      +
    159P  ASP*     3.4    24.8    +      -       -      +
    160P  ILE      3.1     0.4    -      -       -      -
    161P  LEU*     1.3    77.2    -      -       -      +
    163P  THR*     1.3    64.1    +      -       +      +
    165P  GLY*     3.3     2.5    +      -       -      -
    166P  LYS*     3.2    22.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 163 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78P  SER*     4.4    14.2    +      -       -      +
    159P  ASP      3.5    14.1    -      -       -      +
    160P  ILE*     3.0    16.2    +      -       -      +
    162P  ARG*     1.3    78.4    -      -       +      +
    164P  LEU*     1.3    65.6    +      -       -      +
    166P  LYS*     3.4     8.0    +      -       -      +
    167P  ALA*     3.1    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 164 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131P  PHE*     3.8    46.0    -      -       +      +
    134P  LEU*     4.1     7.0    -      -       +      -
    135P  SER*     4.0    23.3    -      -       -      +
    138P  PHE*     3.5    37.5    -      -       +      -
    160P  ILE*     2.9    22.4    +      -       +      +
    161P  LEU*     3.6     8.7    -      -       +      +
    163P  THR*     1.3    77.5    +      -       -      +
    165P  GLY*     1.3    60.8    +      -       -      +
    167P  ALA*     3.2     3.2    +      -       -      +
    168P  ILE*     2.8    42.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 165 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135P  SER*     5.5     2.4    +      -       -      -
    161P  LEU      2.9    16.7    +      -       -      -
    162P  ARG      3.3     2.2    +      -       -      -
    164P  LEU*     1.3    77.8    -      -       -      +
    166P  LYS*     1.3    60.3    +      -       -      +
    168P  ILE*     3.8     7.5    -      -       -      +
    169P  TRP*     3.0    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 166 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69O  HIS*     5.4     3.8    +      -       -      -
    162P  ARG*     3.2    13.4    +      -       +      +
    163P  THR*     3.7    11.2    -      -       -      +
    165P  GLY*     1.3    77.0    -      -       -      +
    167P  ALA*     1.3    57.6    +      -       -      +
    169P  TRP*     3.3    25.0    +      -       +      +
    170P  MET*     3.0    56.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 167 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75P  TYR*     3.9    18.2    -      -       +      -
    131P  PHE*     3.7    27.1    -      -       +      -
    163P  THR      3.1    17.2    +      -       -      +
    164P  LEU*     3.2     4.0    +      -       -      +
    166P  LYS*     1.3    74.7    -      -       -      +
    168P  ILE*     1.3    59.7    +      -       -      +
    170P  MET*     3.2     8.8    +      -       -      +
    171P  LEU*     2.8    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 168 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128P  LYS*     3.7    13.5    -      -       +      +
    131P  PHE*     3.6    46.0    -      -       +      +
    132P  GLU*     3.7    34.5    -      -       +      +
    135P  SER*     4.0    14.4    -      -       -      +
    164P  LEU*     2.8    29.3    +      -       +      +
    165P  GLY*     3.8     6.3    -      -       -      +
    167P  ALA*     1.3    72.4    -      -       -      +
    169P  TRP*     1.3    59.3    +      -       -      +
    171P  LEU*     3.4     6.4    +      -       -      +
    172P  GLY*     2.9    24.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 169 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57O  HIS      5.0     0.2    -      -       -      -
     58O  TRP*     3.9    30.9    +      +       +      -
     65O  PHE*     3.8    14.8    -      +       -      -
     69O  HIS*     3.8    28.5    -      +       -      -
    165P  GLY      3.0    17.9    +      -       -      +
    166P  LYS*     3.6    27.8    -      -       +      +
    167P  ALA      3.2     0.2    -      -       -      -
    168P  ILE*     1.3    79.1    -      -       -      +
    170P  MET*     1.3    90.0    +      -       +      +
    172P  GLY*     3.2     2.9    +      -       -      -
    173P  ALA*     2.9    25.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 170 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65O  PHE*     3.7    23.1    -      -       +      -
     66O  LYS*     5.2    17.0    -      -       +      -
     69O  HIS*     4.6    13.0    -      -       -      +
     75P  TYR*     5.2     4.5    -      -       -      +
    166P  LYS*     3.0    54.3    +      -       +      +
    167P  ALA*     3.8     8.1    -      -       -      +
    169P  TRP*     1.3    97.6    -      -       +      +
    171P  LEU*     1.3    57.4    +      -       -      +
    173P  ALA*     3.1     3.3    +      -       -      +
    174P  THR*     2.6    37.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 171 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71P  LEU*     4.6     5.2    -      -       +      -
     75P  TYR*     3.5    20.0    -      -       +      +
    124P  LEU*     3.9    40.8    -      -       +      -
    127P  VAL*     3.3    26.7    -      -       +      -
    128P  LYS*     3.7    29.4    -      -       +      -
    131P  PHE*     3.8    15.7    -      -       +      -
    167P  ALA      2.8    23.5    +      -       -      +
    168P  ILE*     3.8     4.0    -      -       -      +
    170P  MET*     1.3    73.1    -      -       -      +
    172P  GLY*     1.3    64.2    +      -       -      +
    174P  THR*     3.2     6.5    +      -       +      +
    175P  LEU*     2.9    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 172 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128P  LYS*     3.5    23.3    -      -       -      +
    168P  ILE      2.9    12.0    +      -       -      -
    169P  TRP*     3.6     3.8    -      -       -      -
    171P  LEU*     1.3    77.8    -      -       -      +
    173P  ALA*     1.3    55.7    +      -       -      +
    175P  LEU*     3.8     2.7    -      -       -      +
    176P  LYS*     2.9    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 173 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58O  TRP      6.1     0.2    -      -       -      +
     60O  ILE      4.4     5.6    -      -       -      +
     61O  TYR*     3.4     9.3    -      -       +      +
     62O  GLY      2.9    22.7    +      -       -      -
     65O  PHE*     3.7    33.4    -      -       +      -
    169P  TRP*     2.9    21.3    +      -       +      +
    170P  MET      3.1     8.0    +      -       -      +
    172P  GLY*     1.3    79.3    -      -       -      +
    174P  THR*     1.3    58.1    +      -       -      +
    176P  LYS*     3.7     7.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 174 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62O  GLY*     3.0    31.4    -      -       -      -
     63O  ILE*     3.3    22.7    +      -       -      +
     65O  PHE*     3.6    20.4    -      -       +      -
     66O  LYS*     4.6     7.0    -      -       +      +
    124P  LEU*     3.8    23.3    -      -       +      +
    170P  MET*     2.6    32.0    +      -       +      +
    171P  LEU*     3.7     9.1    +      -       +      +
    173P  ALA*     1.3    76.0    -      -       -      +
    175P  LEU*     1.3    63.7    +      -       -      +
    176P  LYS      3.4     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 175 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63O  ILE*     5.9     0.9    -      -       +      -
    121P  VAL*     3.7    42.0    -      -       +      +
    124P  LEU*     3.8    17.3    -      -       +      +
    125P  ALA*     3.5    34.5    -      -       +      +
    128P  LYS*     4.2    15.7    -      -       +      -
    171P  LEU      2.9    20.5    +      -       -      +
    172P  GLY*     4.1     3.1    -      -       -      +
    174P  THR*     1.3    83.2    -      -       -      +
    176P  LYS*     1.3    66.7    +      -       -      +
    177P  ALA*     3.4     5.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 176 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59O  HIS      5.6     0.2    +      -       -      -
     61O  TYR*     3.6    42.9    -      -       +      +
     62O  GLY*     4.2    10.4    -      -       -      -
    117O  GLU*     2.7    50.3    +      -       -      +
    172P  GLY      2.9    17.5    +      -       -      +
    173P  ALA*     3.7    11.0    -      -       -      +
    174P  THR      3.4     0.9    -      -       -      +
    175P  LEU*     1.3    78.6    -      -       -      +
    177P  ALA*     1.3    68.1    +      -       -      +
----------------------------------------------------------
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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