Contacts of the helix formed by residues 1681 - 1702 (chain X) in PDB entry 3HM6


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 THR1681 (chain X).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1X  UNX      3.6     8.1    -      -       -      -
   1624X  GLU*     3.5    15.7    -      -       -      +
   1634X  ARG*     4.0     8.7    -      -       -      +
   1663X  LEU*     5.8     1.7    -      -       +      +
   1680X  GLU*     1.3    85.7    +      -       +      +
   1682X  VAL*     1.3    65.0    +      -       -      +
   1683X  VAL*     3.6     7.0    -      -       +      +
   1684X  GLU*     3.2    34.3    +      -       -      +
   1685X  LYS*     3.1    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1682 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1X  UNX      3.9     0.7    -      -       -      -
   1620X  ILE*     3.9    28.3    -      -       +      +
   1623X  LEU*     6.2     0.7    -      -       +      -
   1624X  GLU*     3.2    32.2    +      -       +      +
   1629X  PHE*     4.3     7.0    -      -       +      -
   1634X  ARG*     3.5    31.6    -      -       +      +
   1637X  VAL*     5.0     4.0    -      -       +      -
   1638X  ALA*     3.7    14.1    -      -       +      +
   1641X  LEU*     4.8     3.6    -      -       +      -
   1659X  LEU*     4.9     0.2    -      -       +      -
   1681X  THR*     1.3    73.3    -      -       -      +
   1683X  VAL*     1.3    52.7    +      -       -      +
   1685X  LYS      3.1     2.3    +      -       -      -
   1686X  LEU*     2.7    60.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1683 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1X  UNX      3.2    18.3    -      -       -      -
   1656X  LEU*     4.2    12.7    -      -       +      +
   1659X  LEU*     3.6    39.7    -      -       +      +
   1660X  LEU*     4.1     8.3    -      -       +      +
   1663X  LEU*     3.9    34.3    -      -       +      -
   1676X  LEU*     5.1     2.5    -      -       +      -
   1681X  THR*     3.6     8.5    -      -       -      +
   1682X  VAL*     1.3    76.4    -      -       -      +
   1684X  GLU*     1.3    67.0    +      -       +      +
   1686X  LEU*     3.4     9.1    +      -       -      +
   1687X  LEU*     3.1    23.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU1684 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1663X  LEU*     5.5     2.0    -      -       +      -
   1667X  TYR*     5.4     3.1    +      -       -      -
   1676X  LEU*     3.5    38.3    +      -       +      -
   1677X  ARG      3.7     1.6    +      -       -      -
   1678X  ARG*     2.9    42.2    +      -       -      +
   1679X  THR*     4.0     3.6    -      -       -      -
   1680X  GLU*     2.9    24.4    +      -       -      +
   1681X  THR*     3.2    26.8    +      -       -      +
   1682X  VAL      3.3     0.2    -      -       -      -
   1683X  VAL*     1.3    83.3    -      -       +      +
   1685X  LYS*     1.3    60.3    +      -       -      +
   1687X  LEU*     3.5     2.8    +      -       -      +
   1688X  THR      3.2    13.2    +      -       -      -
   1984X  ARG*     3.1    21.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS1685 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1575X  ILE      2.8    26.9    +      -       -      -
   1576X  PHE      3.5     6.9    +      -       -      -
   1578X  PRO*     4.0    11.8    -      -       -      +
   1635X  ALA*     3.3    35.2    -      -       +      +
   1638X  ALA*     3.5    17.0    -      -       +      -
   1639X  SER*     3.3    22.0    -      -       -      +
   1679X  THR*     3.9    22.2    -      -       +      +
   1681X  THR      3.1    13.8    +      -       -      +
   1682X  VAL      3.7     1.8    -      -       -      +
   1684X  GLU*     1.3    75.0    -      -       -      +
   1686X  LEU*     1.3    63.9    +      -       -      +
   1688X  THR*     3.4    14.2    +      -       -      +
   1689X  ASN*     3.1    34.1    +      -       -      +
   1988X  ASN*     6.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1686 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1620X  ILE*     4.7     3.4    -      -       +      -
   1638X  ALA*     3.4    33.0    -      -       -      +
   1641X  LEU*     4.6     8.3    -      -       +      -
   1642X  THR*     4.0     0.2    -      -       -      +
   1652X  PHE*     3.7    32.0    -      -       +      -
   1655X  ILE*     4.7    10.3    -      -       +      -
   1656X  LEU*     4.1    14.6    -      -       +      -
   1659X  LEU*     3.4    33.7    -      -       +      -
   1682X  VAL*     2.7    36.1    +      -       +      +
   1683X  VAL*     3.4     4.9    +      -       -      +
   1685X  LYS*     1.3    71.4    -      -       -      +
   1687X  LEU*     1.3    57.3    +      -       -      +
   1689X  ASN*     3.3     5.6    +      -       -      +
   1690X  TRP*     2.8    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1687 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1656X  LEU*     3.9    16.9    -      -       +      +
   1660X  LEU*     5.6     1.1    -      -       +      -
   1676X  LEU*     3.8    27.8    -      -       +      -
   1683X  VAL*     3.1    13.3    +      -       +      +
   1684X  GLU*     3.5     9.6    -      -       -      +
   1686X  LEU*     1.3    73.1    -      -       -      +
   1688X  THR*     1.3    59.7    +      -       -      +
   1690X  TRP*     3.2     5.1    +      -       +      +
   1691X  MET*     2.9    47.1    +      -       +      +
   1954X  PHE*     3.4    38.1    -      -       +      -
   1980X  SER*     3.8    33.0    -      -       -      +
   1984X  ARG*     3.8     9.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR1688 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1575X  ILE*     4.4     7.0    -      -       +      -
   1679X  THR*     4.2     7.9    +      -       +      +
   1684X  GLU      3.2     3.3    +      -       -      -
   1685X  LYS*     3.4    29.1    +      -       +      +
   1687X  LEU*     1.3    77.6    -      -       -      +
   1689X  ASN*     1.3    57.5    +      -       -      +
   1691X  MET*     3.8     3.0    -      -       -      +
   1692X  SER*     2.6    43.7    +      -       -      +
   1984X  ARG*     3.1    55.2    +      -       -      +
   1985X  PHE*     4.9     1.4    -      -       -      -
   1988X  ASN*     4.6     7.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN1689 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1575X  ILE*     4.3     1.9    -      -       -      +
   1576X  PHE*     3.2    32.7    -      -       +      -
   1638X  ALA      4.1     1.4    +      -       -      -
   1639X  SER*     3.0    30.7    +      -       -      +
   1642X  THR*     3.1    29.5    +      -       +      +
   1652X  PHE*     4.9     0.4    -      -       +      -
   1685X  LYS*     3.1    37.1    +      -       -      +
   1686X  LEU      3.6     4.3    -      -       -      +
   1687X  LEU      3.2     0.2    -      -       -      -
   1688X  THR*     1.3    78.8    -      -       -      +
   1690X  TRP*     1.3    59.9    +      -       -      +
   1692X  SER*     3.3     3.8    +      -       -      -
   1693X  ILE*     2.9    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP1690 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1649X  LEU*     5.7     1.3    -      -       +      -
   1652X  PHE*     3.7    27.1    -      +       +      -
   1653X  THR*     3.0    32.3    +      -       +      +
   1656X  LEU*     3.6    25.8    -      -       +      -
   1686X  LEU      2.8    17.7    +      -       -      +
   1687X  LEU*     3.5     6.3    -      -       +      +
   1689X  ASN*     1.3    73.8    -      -       -      +
   1691X  MET*     1.3    89.9    +      -       +      +
   1693X  ILE*     3.4    10.5    +      -       +      +
   1694X  CYS*     3.0    44.9    +      -       -      -
   1950X  ALA*     3.5    40.6    -      -       +      -
   1953X  TYR*     4.0    22.4    -      +       -      -
   1954X  PHE*     3.9    13.9    -      +       +      -
   2067X  MET*     5.3     1.6    -      -       -      -
   2071X  LEU*     4.2     8.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET1691 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1687X  LEU*     2.9    27.0    +      -       +      +
   1688X  THR*     3.8     6.1    -      -       -      +
   1690X  TRP*     1.3    87.4    -      -       +      +
   1692X  SER*     1.3    57.8    +      -       -      +
   1694X  CYS*     3.3     2.5    +      -       -      -
   1695X  LEU*     2.9    43.7    +      -       +      +
   1950X  ALA*     5.4     0.7    -      -       -      +
   1951X  VAL*     5.0     7.2    -      -       -      -
   1954X  PHE*     3.7    40.2    -      -       +      -
   1955X  PHE*     4.7     4.7    -      -       +      -
   1980X  SER*     3.4    31.9    -      -       -      +
   1981X  LEU*     4.0    24.9    -      -       +      -
   1984X  ARG*     5.3     0.4    -      -       +      -
   1985X  PHE*     4.2    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER1692 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1571X  TYR*     2.6    32.3    +      -       -      -
   1575X  ILE*     3.4    40.7    -      -       -      +
   1576X  PHE*     4.9     4.7    -      -       -      -
   1688X  THR*     2.6    25.1    +      -       -      +
   1689X  ASN*     3.6     5.8    -      -       -      -
   1690X  TRP      3.3     0.4    -      -       -      -
   1691X  MET*     1.3    73.2    -      -       -      +
   1693X  ILE*     1.3    64.5    +      -       -      +
   1696X  TYR      3.2     8.7    +      -       -      -
   1985X  PHE*     3.5    17.6    -      -       -      -
   1988X  ASN*     5.3     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE1693 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1568X  TYR*     3.2    31.0    -      -       +      +
   1576X  PHE*     4.0     8.1    -      -       +      -
   1642X  THR*     3.9    26.2    -      -       +      -
   1646X  HIS*     3.8     9.4    -      -       +      +
   1649X  LEU*     3.8    38.6    -      -       +      -
   1652X  PHE*     4.7     3.1    -      -       +      -
   1689X  ASN      2.9    23.9    +      -       -      +
   1690X  TRP*     3.6    10.5    -      -       +      +
   1692X  SER*     1.3    77.8    -      -       -      +
   1694X  CYS*     1.3    66.6    +      -       -      +
   1695X  LEU      3.4     0.2    +      -       -      -
   1696X  TYR*     3.5    14.2    +      -       -      +
   2074X  LEU*     3.8    25.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS1694 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1690X  TRP*     3.0    48.5    +      -       +      +
   1691X  MET*     4.0     4.3    -      -       -      +
   1693X  ILE*     1.3    83.0    -      -       -      +
   1695X  LEU*     1.3    66.0    +      -       +      +
   1696X  TYR      3.4     0.8    +      -       -      -
   1697X  THR*     4.8     7.6    +      -       -      -
   1698X  PHE*     5.2     1.2    +      -       -      +
   1948X  PRO*     5.6     1.9    -      -       -      +
   1950X  ALA*     3.5    29.7    -      -       +      +
   2070X  VAL*     6.0     0.9    -      -       +      -
   2071X  LEU*     4.2     6.7    -      -       -      -
   2074X  LEU*     3.9    30.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1695 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1571X  TYR*     4.1     2.2    -      -       -      -
   1691X  MET*     2.9    25.3    +      -       -      +
   1692X  SER      4.0     1.1    -      -       -      -
   1694X  CYS*     1.3    80.6    -      -       +      +
   1696X  TYR*     1.3    66.0    +      -       -      +
   1697X  THR      3.3     2.9    -      -       -      -
   1698X  PHE*     3.2    18.5    +      -       +      +
   1699X  VAL*     3.1    23.8    +      -       +      +
   1948X  PRO*     3.8    35.0    -      -       +      -
   1950X  ALA*     5.6     1.6    -      -       +      -
   1951X  VAL*     3.9    14.1    -      -       +      +
   1981X  LEU*     3.5    32.1    -      -       +      -
   1985X  PHE*     3.6    28.7    -      -       +      -
   1986X  TRP*     4.4     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR1696 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1565X  PHE*     6.1     1.6    -      +       -      -
   1566X  LEU      2.8    25.3    +      -       -      -
   1567X  ASP*     3.9     0.2    -      -       -      -
   1568X  TYR*     3.3    41.3    +      +       +      -
   1571X  TYR*     3.5    50.0    -      +       +      -
   1692X  SER      3.2     9.8    +      -       -      +
   1693X  ILE      3.5    13.4    +      -       -      +
   1694X  CYS      3.4     2.0    -      -       -      -
   1695X  LEU*     1.3    78.2    -      -       -      +
   1697X  THR*     1.3    73.0    +      -       +      +
   1699X  VAL*     3.4     4.9    +      -       +      +
   1700X  ARG*     2.9    60.6    +      -       +      +
   1996X  VAL*     6.3     1.3    -      -       +      -
   2074X  LEU*     6.1     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR1697 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1693X  ILE      5.2     0.2    +      -       -      -
   1694X  CYS      4.8     6.7    +      -       -      -
   1695X  LEU      3.3     0.4    -      -       -      -
   1696X  TYR*     1.3    90.1    -      -       +      +
   1698X  PHE*     1.3    58.5    +      -       -      +
   1700X  ARG*     3.2    11.1    -      -       +      +
   1701X  ASP*     2.7    48.4    +      -       -      -
   2074X  LEU*     5.5    11.6    -      -       +      +
   2077X  ASN*     5.1    12.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1698 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1694X  CYS      5.3     0.7    -      -       -      +
   1695X  LEU*     3.2    26.4    +      -       +      +
   1697X  THR*     1.3    81.1    +      -       -      +
   1699X  VAL*     1.3    53.5    +      -       -      +
   1701X  ASP*     4.3     4.5    -      -       +      -
   1702X  SER*     2.7    59.3    +      -       -      -
   1703X  VAL*     3.3    20.4    +      -       +      -
   1939X  VAL      4.3    16.6    -      -       -      -
   1940X  ILE      5.1     4.5    -      -       -      -
   1945X  ARG*     5.1    10.8    -      -       +      -
   1946X  PRO      4.9     7.2    -      -       -      -
   1948X  PRO*     3.9    30.7    -      -       +      -
   1986X  TRP*     3.7    29.8    -      +       -      -
   2052X  TYR*     6.0     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL1699 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1565X  PHE*     4.8     0.4    -      -       +      -
   1571X  TYR*     4.7     7.2    -      -       +      +
   1695X  LEU      3.1    15.0    +      -       -      +
   1696X  TYR*     3.5     9.0    -      -       +      +
   1698X  PHE*     1.3    72.4    -      -       -      +
   1700X  ARG*     1.3    66.6    +      -       -      +
   1701X  ASP      3.2     0.5    +      -       -      -
   1703X  VAL*     3.5    11.5    +      -       +      -
   1704X  GLY*     2.7    37.2    +      -       -      +
   1707X  LEU*     5.2     4.0    -      -       +      -
   1985X  PHE*     3.8    24.7    -      -       +      -
   1986X  TRP*     4.0    18.8    -      -       +      -
   1989X  ILE*     5.2     2.9    -      -       +      -
   1996X  VAL*     3.7    36.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG1700 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1563X  ILE      5.6     0.2    +      -       -      -
   1565X  PHE*     3.5    66.4    +      -       -      +
   1566X  LEU      3.7     9.7    +      -       -      -
   1567X  ASP*     4.8     7.3    +      -       -      +
   1696X  TYR*     2.9    51.4    +      -       +      +
   1697X  THR*     3.2    17.5    -      -       +      +
   1699X  VAL*     1.3    79.5    -      -       -      +
   1701X  ASP*     1.3    63.3    +      -       -      +
   1704X  GLY      5.1     0.3    +      -       -      -
   1705X  GLU      5.6     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP1701 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1697X  THR*     2.7    33.9    +      -       -      +
   1698X  PHE*     3.9     5.0    -      -       +      +
   1699X  VAL      3.2     0.2    -      -       -      -
   1700X  ARG*     1.3    84.0    -      -       -      +
   1702X  SER*     1.3    63.3    +      -       -      +
   1704X  GLY      5.3     0.2    -      -       -      -
   1705X  GLU*     5.9     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER1702 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1698X  PHE*     2.7    43.5    +      -       -      -
   1699X  VAL      3.7     0.2    +      -       -      -
   1701X  ASP*     1.3    79.4    -      -       -      +
   1703X  VAL*     1.3    58.7    +      -       -      +
   1704X  GLY      3.4     1.8    -      -       -      -
   1705X  GLU*     4.1     3.9    +      -       -      +
   1706X  PRO*     3.2    23.4    -      -       -      +
   1939X  VAL*     3.7    16.4    -      -       -      +
   1945X  ARG*     3.6    28.4    +      -       -      +
----------------------------------------------------------
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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