Contacts of the helix formed by residues 141 - 164 (chain G) in PDB entry 1F33


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 141 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21G  VAL*     4.8     9.0    -      -       +      +
     25G  GLU*     3.5     9.2    +      -       -      +
     29G  THR*     3.8    17.1    +      -       -      +
     83G  ARG*     2.7    35.1    +      -       -      -
     87G  LEU*     4.2     7.5    -      -       -      +
    139G  ALA*     4.4     1.1    -      -       -      +
    140G  LYS*     1.3    77.5    -      -       -      +
    142G  ASP*     1.3    68.1    +      -       -      +
    143G  ASP*     3.8     2.4    +      -       -      +
    144G  THR*     2.5    34.2    +      -       -      +
    145G  ALA*     2.9    21.8    +      -       -      +
    133I  ARG*     4.3    11.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 142 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140G  LYS      3.3     8.9    +      -       -      +
    141G  ASP*     1.3    72.4    +      -       -      +
    143G  ASP*     1.3    65.2    +      -       -      +
    145G  ALA*     3.0    11.3    +      -       -      +
    146G  ASP*     2.9    22.3    +      -       -      +
    133I  ARG*     4.4     7.9    -      -       +      +
    136I  ILE*     3.8    41.5    -      -       +      +
    137I  GLY*     4.3    10.5    +      -       -      -
    149I  THR*     4.3     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 143 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83G  ARG*     3.2    34.0    +      -       -      +
    141G  ASP*     3.3     1.2    +      -       -      -
    142G  ASP*     1.3    78.5    -      -       -      +
    144G  THR*     1.3    57.0    +      -       -      +
    146G  ASP*     3.2     4.7    +      -       -      +
    147G  ILE*     3.0    32.7    +      -       -      +
    133I  ARG*     3.9     5.1    -      -       -      -
    136I  ILE*     3.4    17.8    -      -       -      +
    149I  THR*     3.5    15.3    -      -       -      +
    152I  SER*     2.6    34.8    +      -       -      -
    153I  ARG*     3.7    16.1    +      -       -      +
    156I  ASP*     3.4     8.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 144 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29G  THR*     3.2    22.5    -      -       +      +
     32G  LEU*     5.1     4.0    -      -       +      -
     33G  LEU*     3.5    29.6    -      -       +      -
     83G  ARG*     3.6    10.0    +      -       -      +
    139G  ALA*     4.4     8.3    -      -       +      -
    141G  ASP*     2.5    33.3    +      -       -      -
    143G  ASP*     1.3    74.9    -      -       -      +
    145G  ALA*     1.3    66.2    +      -       -      +
    147G  ILE*     3.1    10.1    +      -       -      +
    148G  LEU*     2.9    35.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 145 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136G  ILE*     4.0    23.7    -      -       +      +
    139G  ALA*     3.9    17.0    -      -       +      +
    141G  ASP      2.9    12.9    +      -       -      +
    142G  ASP*     3.3    12.3    -      -       -      +
    144G  THR*     1.3    76.1    -      -       -      +
    146G  ASP*     1.3    53.7    +      -       -      +
    148G  LEU*     3.3     5.2    +      -       -      +
    149G  THR*     2.6    39.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 146 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142G  ASP      2.9     5.7    +      -       -      +
    143G  ASP      3.3     9.2    -      -       -      +
    145G  ALA*     1.3    76.9    -      -       -      +
    147G  ILE*     1.3    63.2    +      -       -      +
    149G  THR*     3.0     9.0    +      -       -      -
    150G  ALA*     3.0    22.9    +      -       -      +
    607G  TRS      2.6    42.8    +      -       -      -
    146I  ASP*     4.3     6.5    -      -       -      +
    149I  THR*     3.6    28.1    -      -       +      +
    150I  ALA      5.2     0.9    +      -       -      -
    153I  ARG*     3.0    21.8    +      -       -      +
    146K  ASP*     4.5     5.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 147 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33G  LEU*     5.2     1.8    -      -       +      -
     76G  HIS*     4.7     2.8    +      -       -      +
     79G  THR*     3.8    24.7    -      -       +      +
     80G  MET*     3.6    31.4    -      -       +      -
     83G  ARG*     3.6    39.7    -      -       +      -
    143G  ASP      3.0    18.7    +      -       -      +
    144G  THR*     3.1     8.7    +      -       -      +
    146G  ASP*     1.3    76.7    -      -       -      +
    148G  LEU*     1.3    64.1    +      -       +      +
    150G  ALA*     3.3     4.4    +      -       -      +
    151G  ALA*     3.1    21.9    +      -       +      +
    153I  ARG*     3.4    36.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 148 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32G  LEU*     4.3     8.1    -      -       +      -
     33G  LEU*     4.6     5.8    -      -       +      -
     36G  GLN*     3.9    11.2    -      -       +      -
     80G  MET*     3.8    29.2    -      -       +      -
    132G  VAL*     3.9    19.6    -      -       +      +
    135G  ALA*     3.8    34.3    -      -       +      +
    136G  ILE*     3.9    13.5    -      -       +      +
    139G  ALA*     4.2     7.0    -      -       +      -
    144G  THR*     2.9    35.5    +      -       +      +
    145G  ALA      3.7     3.8    -      -       -      +
    147G  ILE*     1.3    72.8    -      -       +      +
    149G  THR*     1.3    55.8    +      -       -      +
    151G  ALA*     3.7     3.5    -      -       -      +
    152G  SER*     2.7    36.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 149 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136G  ILE*     3.5    25.4    -      -       +      +
    145G  ALA*     2.6    24.0    +      -       -      +
    146G  ASP*     3.0     9.2    +      -       -      -
    148G  LEU*     1.3    76.9    -      -       -      +
    150G  ALA*     1.3    58.9    +      -       -      +
    153G  ARG*     2.8    31.2    +      -       -      +
    607G  TRS      6.4     0.2    -      -       -      -
    142K  ASP*     4.3     4.8    -      -       +      +
    143K  ASP*     3.5    19.8    -      -       -      +
    146K  ASP*     3.8    35.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 150 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76G  HIS*     3.4    19.4    -      -       +      +
    146G  ASP      3.0    11.0    +      -       -      +
    147G  ILE*     3.5    11.2    -      -       -      +
    149G  THR*     1.3    79.7    -      -       -      +
    151G  ALA*     1.3    61.6    +      -       -      +
    153G  ARG*     3.4     8.0    +      -       -      +
    154G  ASP*     3.4    15.9    +      -       -      +
    607G  TRS      4.4    20.1    +      -       -      +
    153I  ARG*     4.8    10.8    -      -       -      +
    146K  ASP*     5.2     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 151 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40G  PHE*     4.0    22.0    -      -       +      -
     76G  HIS*     3.4    32.0    -      -       +      +
     80G  MET*     4.9     6.3    -      -       -      -
    132G  VAL*     4.7     2.2    -      -       +      -
    147G  ILE*     3.1    15.3    +      -       +      +
    148G  LEU*     3.7     8.1    -      -       -      +
    150G  ALA*     1.3    74.4    -      -       -      +
    152G  SER*     1.3    66.0    +      -       -      +
    154G  ASP*     3.1     4.3    +      -       -      +
    155G  LEU*     3.0    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 152 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132G  VAL*     4.0    21.6    -      -       -      +
    133G  ARG*     3.7    19.0    -      -       -      +
    136G  ILE*     3.7    10.3    -      -       -      -
    148G  LEU      2.7    22.3    +      -       -      -
    149G  THR      3.6     0.2    -      -       -      -
    151G  ALA*     1.3    71.9    -      -       -      +
    153G  ARG*     1.3    64.9    +      -       -      +
    155G  LEU*     3.1     2.4    +      -       -      +
    156G  ASP*     2.9    28.6    +      -       -      +
    143K  ASP*     2.6    32.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 153 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149G  THR      2.8    14.2    +      -       -      +
    150G  ALA*     3.4     8.6    -      -       -      +
    152G  SER*     1.3    79.5    -      -       -      +
    154G  ASP*     1.3    63.2    +      -       -      +
    156G  ASP*     3.6     4.2    +      -       -      +
    157G  LYS*     3.3    19.6    +      -       -      +
    607G  TRS      3.9    12.1    +      -       -      -
     79K  THR*     3.7    18.2    -      -       -      +
     83K  ARG*     5.1     2.9    +      -       -      +
     86K  GLN*     4.4     3.3    -      -       -      +
    143K  ASP*     3.8    27.3    +      -       +      +
    146K  ASP*     2.8    29.0    +      -       -      -
    147K  ILE*     3.5    44.0    -      -       +      +
    150K  ALA*     4.8     9.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 154 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72G  ALA*     4.2     8.1    -      -       -      +
     76G  HIS*     2.7    32.5    +      -       +      +
    150G  ALA      3.4     4.6    +      -       -      -
    151G  ALA      3.1     8.9    +      -       -      +
    153G  ARG*     1.3    79.7    -      -       -      +
    155G  LEU*     1.3    62.1    +      -       +      +
    157G  LYS*     3.1    12.9    +      -       -      +
    158G  PHE*     2.8    57.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 155 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40G  PHE*     3.2    38.6    -      -       +      -
     43G  LEU*     3.8    19.7    -      -       +      -
     73G  LEU*     4.1    15.7    -      -       +      -
     76G  HIS*     5.5     1.1    -      -       +      -
    125G  TYR*     4.2    10.4    -      -       +      +
    128G  VAL*     3.6    30.7    -      -       +      -
    129G  ALA*     3.9    23.0    -      -       +      +
    132G  VAL*     4.8     2.2    -      -       +      -
    151G  ALA*     3.0    23.0    +      -       -      +
    152G  SER*     3.8     5.2    -      -       -      +
    154G  ASP*     1.3    78.4    -      -       +      +
    156G  ASP*     1.3    60.0    +      -       -      +
    158G  PHE*     3.3     6.4    +      -       +      +
    159G  LEU*     2.9    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 156 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129G  ALA*     3.7    11.6    -      -       -      +
    133G  ARG*     2.6    34.2    +      -       -      -
    152G  SER*     2.9    19.6    +      -       -      +
    153G  ARG      3.9     1.8    -      -       -      +
    155G  LEU*     1.3    77.4    -      -       -      +
    157G  LYS*     1.3    62.6    +      -       -      +
    159G  LEU*     3.6     6.5    +      -       -      +
    160G  TRP*     3.1    23.2    +      -       -      +
     19K  ASN*     3.5    16.1    +      -       -      +
     83K  ARG*     2.8    38.5    +      -       -      +
     86K  GLN*     3.8     8.3    -      -       +      +
    143K  ASP*     3.3     9.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 157 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153G  ARG      3.3    11.6    +      -       -      +
    154G  ASP*     3.1    16.3    +      -       -      +
    156G  ASP*     1.3    80.2    -      -       -      +
    158G  PHE*     1.3    70.1    +      -       +      +
    160G  TRP*     3.3    11.0    +      -       +      +
    161G  PHE*     2.9    57.6    +      -       +      +
     82K  GLU*     4.0    19.9    +      -       -      +
     86K  GLN*     3.8    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 158 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68G  GLY      5.3     0.4    -      -       -      -
     69G  PHE*     3.4    60.1    -      +       +      -
     72G  ALA*     3.5    33.2    -      -       +      -
     73G  LEU*     4.1    14.4    -      -       +      -
     76G  HIS*     5.7     0.2    -      +       -      -
    125G  TYR*     3.7    20.6    -      +       +      -
    154G  ASP*     2.8    44.4    +      -       +      +
    155G  LEU*     3.7     4.7    -      -       -      +
    157G  LYS*     1.3    89.4    -      -       +      +
    159G  LEU*     1.3    56.3    +      -       -      +
    161G  PHE*     2.9     2.3    +      -       -      +
    162G  ILE*     2.7    40.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 159 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122G  ALA*     3.4    29.2    -      -       -      +
    125G  TYR*     4.1    12.9    -      -       +      -
    126G  ALA*     3.9    24.2    -      -       +      +
    129G  ALA*     4.4    10.8    -      -       +      -
    130G  ASN*     5.2     0.2    -      -       -      +
    155G  LEU      2.9    17.4    +      -       -      +
    156G  ASP*     3.7     5.8    -      -       -      +
    158G  PHE*     1.3    75.9    -      -       -      +
    160G  TRP*     1.3    58.9    +      -       -      +
    162G  ILE*     3.2     4.1    +      -       -      +
    163G  GLU*     2.9    57.6    +      -       +      +
     17K  THR*     4.6     0.7    -      -       -      +
     18K  ARG      4.3     0.4    -      -       -      -
     19K  ASN*     3.8    39.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 160 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156G  ASP      3.1    11.2    +      -       -      +
    157G  LYS*     3.4    10.5    -      -       +      +
    158G  PHE      3.1     0.2    -      -       -      -
    159G  LEU*     1.3    80.7    -      -       -      +
    161G  PHE*     1.3    88.5    +      +       -      +
    163G  GLU*     3.5     9.7    +      -       +      +
    164G  SER*     2.7    65.5    +      -       -      -
     17K  THR*     5.7     1.1    -      -       -      -
     82K  GLU*     3.8    32.8    -      -       +      -
     85K  VAL*     3.3    37.7    -      -       +      +
     86K  GLN*     3.4    45.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 161 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65G  MET*     3.9    15.5    -      -       +      -
     69G  PHE*     3.6    30.5    -      +       +      -
    157G  LYS*     2.9    39.4    +      -       +      +
    158G  PHE      2.9     6.9    +      -       -      +
    160G  TRP*     1.3   116.6    -      +       -      +
    162G  ILE*     1.3    62.6    +      -       -      +
    164G  SER*     3.5     9.1    +      -       -      -
    165G  ASN*     2.8    25.8    +      -       -      -
     82K  GLU*     5.6     2.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 162 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65G  MET*     4.4    10.8    -      -       +      -
     66G  LEU*     4.8     5.8    -      -       +      -
     69G  PHE*     3.7    15.9    -      -       +      -
    118G  LEU*     3.3    39.8    -      -       +      +
    121G  LEU*     4.1    10.1    -      -       +      -
    122G  ALA*     3.8    11.7    -      -       +      +
    125G  TYR*     3.5    54.1    -      -       +      -
    158G  PHE      2.7    18.3    +      -       -      +
    159G  LEU*     3.5     6.1    -      -       -      +
    161G  PHE*     1.3    71.2    -      -       -      +
    163G  GLU*     1.3    65.3    +      -       -      +
    165G  ASN*     2.9    19.6    +      -       -      +
    166G  ILE*     3.6     7.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 163 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122G  ALA*     4.3     4.3    -      -       +      -
    159G  LEU*     2.9    35.2    +      -       +      +
    160G  TRP*     3.9     7.6    -      -       +      +
    162G  ILE*     1.3    74.6    -      -       -      +
    164G  SER*     1.3    58.2    +      -       -      +
    166G  ILE*     2.9    35.8    +      -       +      +
     16K  TYR*     4.4     3.0    -      -       -      +
     17K  THR*     2.7    31.0    +      -       -      -
     18K  ARG*     2.8    60.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 164 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160G  TRP*     2.7    53.7    +      -       -      -
    161G  PHE*     3.8     8.3    -      -       -      -
    162G  ILE      3.2     0.6    -      -       -      -
    163G  GLU*     1.3    72.9    -      -       -      +
    165G  ASN*     1.3    62.2    +      -       -      +
    166G  ILE      3.4     3.6    -      -       -      +
----------------------------------------------------------
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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