Contacts of the helix formed by residues 1565 - 1591 (chain D) in PDB entry 5EK0


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 ASP1565 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1561D  SER      4.0     2.9    +      -       -      +
   1562D  PHE*     3.4    16.1    +      -       -      +
   1563D  PHE      4.1     0.7    -      -       -      +
   1564D  LYS*     1.4    83.5    -      -       +      +
   1566D  PRO*     1.4    64.2    -      -       -      +
   1567D  TRP*     3.1    33.4    -      -       -      +
   1568D  SER*     3.1    30.8    +      -       -      +
   1569D  LEU*     3.1    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO1566 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1564D  LYS*     3.7    10.1    -      -       +      +
   1565D  ASP*     1.4    90.4    -      -       -      +
   1567D  TRP*     1.4    69.6    +      -       +      +
   1569D  LEU*     3.3    17.4    -      -       +      +
   1570D  PHE*     3.0    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP1567 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1554D  ARG*     4.8     0.7    -      -       -      -
   1565D  ASP*     3.1    24.0    +      -       -      +
   1566D  PRO*     1.4    86.9    -      -       +      +
   1568D  SER*     1.4    58.1    +      -       -      +
   1570D  PHE*     3.2     7.9    +      +       +      +
   1571D  ASP*     3.0    35.5    +      -       -      +
   1614D  THR*     3.8    39.5    -      -       +      -
   1620D  ARG*     3.6    44.9    -      -       +      -
   1623D  VAL*     5.5     6.5    -      -       +      -
   1624D  SER*     4.0    21.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER1568 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1554D  ARG*     2.8    29.2    +      -       -      +
   1558D  HIS*     5.9     2.3    +      -       -      -
   1562D  PHE*     3.3    50.1    -      -       -      -
   1565D  ASP*     3.1    25.2    +      -       -      +
   1567D  TRP*     1.4    70.7    -      -       -      +
   1569D  LEU*     1.3    63.2    +      -       -      +
   1571D  ASP*     3.6     2.3    +      -       -      +
   1572D  PHE*     3.2    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1569 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1562D  PHE*     4.7     4.6    +      -       -      -
   1563D  PHE*     3.8    34.5    -      -       +      +
   1565D  ASP      3.1    17.0    +      -       -      +
   1566D  PRO*     3.3    17.0    -      -       +      +
   1568D  SER*     1.3    76.2    -      -       -      +
   1570D  PHE*     1.4    56.0    +      -       -      +
   1572D  PHE*     3.2    14.9    +      -       +      +
   1573D  VAL*     3.1    38.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1570 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1566D  PRO      3.0    14.4    +      -       -      +
   1567D  TRP*     3.2     9.4    +      -       +      +
   1569D  LEU*     1.4    71.5    -      -       -      +
   1571D  ASP*     1.4    70.0    +      -       -      +
   1572D  PHE      3.0     3.8    -      -       -      -
   1573D  VAL*     2.8    32.2    +      -       +      +
   1574D  VAL*     2.9    31.2    +      -       +      +
   1610D  LEU*     4.1    32.3    -      -       +      -
   1611D  ARG*     3.6    18.8    -      -       +      -
   1614D  THR*     3.3    38.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP1571 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1550D  GLU*     5.4     0.5    -      -       -      +
   1551D  ILE*     4.1     7.4    -      -       +      +
   1554D  ARG*     3.0    42.2    +      -       -      +
   1567D  TRP*     3.0    20.6    +      -       -      +
   1568D  SER      3.8     1.6    -      -       -      +
   1570D  PHE*     1.4    87.4    -      -       -      +
   1572D  PHE*     1.4    58.5    +      -       -      +
   1574D  VAL*     3.5    20.6    -      -       -      +
   1575D  VAL*     3.6    10.4    +      -       -      +
   1611D  ARG*     3.0    32.1    +      -       -      +
   1614D  THR*     3.7    10.1    +      -       -      -
   1615D  ALA*     5.0     5.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1572 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1551D  ILE*     4.1    17.0    -      -       +      +
   1555D  ILE*     3.8    31.2    -      -       +      -
   1562D  PHE*     3.9    12.3    -      +       +      -
   1563D  PHE*     4.6    18.4    -      +       -      -
   1568D  SER      3.2    13.7    +      -       -      +
   1569D  LEU*     3.2    17.9    -      -       +      +
   1570D  PHE      3.0     0.4    -      -       -      -
   1571D  ASP*     1.4    74.3    -      -       -      +
   1573D  VAL*     1.4    69.1    +      -       +      +
   1574D  VAL      3.2     1.3    -      -       -      -
   1575D  VAL*     3.3     7.8    -      -       +      +
   1576D  ILE*     3.2    43.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1573 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1569D  LEU*     3.1    27.8    -      -       +      +
   1570D  PHE*     2.8    17.4    +      -       +      +
   1572D  PHE*     1.4    77.2    -      -       +      +
   1574D  VAL*     1.4    56.9    +      -       -      +
   1576D  ILE*     3.3    18.3    -      -       +      +
   1577D  ILE*     3.0    43.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1574 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1547D  PHE*     6.3     2.0    -      -       +      -
   1570D  PHE*     2.9    44.8    +      -       +      +
   1571D  ASP*     3.5    11.2    -      -       -      +
   1573D  VAL*     1.4    76.0    -      -       -      +
   1575D  VAL*     1.3    59.2    +      -       +      +
   1577D  ILE*     3.3    10.0    -      -       +      +
   1578D  SER*     3.1    28.1    +      -       -      -
   1607D  GLY*     3.4    36.8    -      -       -      +
   1608D  ARG*     3.8    12.9    +      -       +      +
   1611D  ARG*     3.7    22.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1575 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1544D  ILE*     4.3     3.8    -      -       -      +
   1547D  PHE*     3.8    14.6    -      -       +      +
   1548D  THR*     3.3    44.4    -      -       +      +
   1551D  ILE*     3.7    24.5    -      -       +      -
   1571D  ASP      3.6     6.1    +      -       -      +
   1572D  PHE*     3.3    17.8    +      -       +      +
   1573D  VAL      3.4     0.2    -      -       -      -
   1574D  VAL*     1.3    78.8    -      -       +      +
   1576D  ILE*     1.3    68.2    +      -       +      +
   1578D  SER*     3.4     6.3    +      -       -      +
   1579D  ILE*     2.9    41.6    +      -       +      +
   1608D  ARG*     6.0     0.7    -      -       -      -
   1611D  ARG*     6.3     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1576 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1572D  PHE*     3.2    38.3    +      -       +      +
   1573D  VAL*     3.3    28.7    -      -       +      +
   1575D  VAL*     1.3    82.5    -      -       +      +
   1577D  ILE*     1.4    60.4    +      -       +      +
   1579D  ILE*     3.4     7.5    +      -       +      +
   1580D  VAL*     2.8    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE1577 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1573D  VAL*     3.0    28.7    +      -       +      +
   1574D  VAL*     3.3    17.9    -      -       -      +
   1576D  ILE*     1.4    79.0    -      -       +      +
   1578D  SER*     1.3    62.3    +      -       -      +
   1580D  VAL*     4.3     4.6    -      -       +      +
   1581D  GLY*     2.9    27.4    +      -       -      -
   1604D  ALA*     3.9    27.8    -      -       +      +
   1607D  GLY*     5.0     6.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER1578 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1544D  ILE*     3.4    13.7    -      -       -      +
   1574D  VAL      3.1    20.5    +      -       -      -
   1575D  VAL*     3.4     9.6    -      -       -      -
   1576D  ILE      3.3     0.2    -      -       -      -
   1577D  ILE*     1.3    74.8    -      -       -      +
   1579D  ILE*     1.4    57.9    +      -       -      +
   1582D  MET*     2.9    31.5    +      -       -      +
   1604D  ALA      4.5     3.4    -      -       -      -
   1608D  ARG*     3.3    42.6    +      -       -      -
   1806D  5P2      3.3    14.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE1579 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1544D  ILE*     3.9    20.2    -      -       +      -
   1548D  THR*     3.3    32.8    -      -       +      +
   1575D  VAL*     2.9    31.5    +      -       +      +
   1576D  ILE*     4.0     7.2    -      -       +      +
   1578D  SER*     1.4    72.1    -      -       -      +
   1580D  VAL*     1.4    65.7    +      -       +      +
   1582D  MET*     3.3    14.0    -      -       +      +
   1583D  PHE*     3.2    44.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL1580 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1576D  ILE*     2.8    32.2    +      -       +      +
   1577D  ILE*     4.3     5.2    -      -       +      +
   1579D  ILE*     1.4    73.3    -      -       +      +
   1581D  GLY*     1.3    58.3    +      -       -      +
   1583D  PHE*     3.5     4.7    +      -       -      +
   1584D  LEU*     2.9    47.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1581 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1577D  ILE      2.9    19.7    +      -       -      -
   1580D  VAL*     1.3    75.4    -      -       -      +
   1582D  MET*     1.4    55.6    +      -       -      +
   1584D  LEU*     3.6     7.4    -      -       -      +
   1585D  ALA*     2.8    37.2    +      -       -      +
   1601D  ILE*     4.3     7.1    -      -       -      +
   1604D  ALA*     4.4     7.0    -      -       -      -
   1806D  5P2      3.4    14.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET1582 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1541D  VAL*     4.0    18.6    -      -       +      -
   1544D  ILE*     3.5    46.4    -      -       +      -
   1545D  ILE*     5.5     6.5    -      -       +      -
   1578D  SER      2.9    17.5    +      -       -      +
   1579D  ILE*     3.3     9.4    -      -       +      +
   1581D  GLY*     1.4    74.2    -      -       -      +
   1583D  PHE*     1.3    74.9    +      -       +      +
   1586D  ASP*     3.3    25.8    +      -       -      +
   1806D  5P2      3.3    75.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1583 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1579D  ILE*     3.2    35.9    +      -       +      -
   1580D  VAL*     4.2     4.0    -      -       -      +
   1581D  GLY      3.3     0.2    -      -       -      -
   1582D  MET*     1.3    87.7    -      -       +      +
   1584D  LEU*     1.3    60.6    +      -       -      +
   1585D  ALA      3.3     0.7    -      -       -      -
   1586D  ASP*     3.7     6.8    -      -       +      +
   1587D  LEU*     2.9    34.4    +      -       +      +
   1805D  PX4      5.6     2.2    -      -       +      -
   1806D  5P2      3.2    41.3    -      +       +      -
----------------------------------------------------------
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Residues in contact with LEU1584 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1580D  VAL*     2.9    34.3    +      -       +      +
   1581D  GLY*     3.2     8.0    +      -       -      +
   1583D  PHE*     1.3    77.7    -      -       -      +
   1585D  ALA*     1.4    59.6    +      -       -      +
   1587D  LEU*     3.7     5.8    +      -       -      +
   1588D  ILE*     3.4    31.5    +      -       +      +
   1601D  ILE*     3.8    33.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA1585 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1581D  GLY      2.8    20.7    +      -       -      +
   1582D  MET      4.1     0.2    -      -       -      +
   1584D  LEU*     1.4    70.7    -      -       -      +
   1586D  ASP*     1.4    57.1    +      -       -      +
   1588D  ILE*     3.3     6.3    +      -       -      +
   1589D  GLU      3.0    23.4    +      -       -      -
   1598D  PHE*     3.4    24.5    -      -       +      -
   1601D  ILE*     4.1    16.1    -      -       +      +
   1602D  ARG*     4.3    13.5    -      -       +      +
   1806D  5P2      3.3    23.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1586 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1582D  MET      3.3    16.6    +      -       -      +
   1583D  PHE*     3.3     9.7    +      -       +      +
   1585D  ALA*     1.4    73.4    -      -       -      +
   1587D  LEU*     1.4    63.9    +      -       -      +
   1589D  GLU*     3.3     2.2    +      -       -      +
   1590D  THR*     3.1    35.9    +      -       -      +
   1805D  PX4      4.6    10.8    -      -       -      +
   1806D  5P2      3.1    73.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1587 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1583D  PHE*     2.9    17.7    +      -       +      +
   1584D  LEU*     3.8     7.2    -      -       -      +
   1585D  ALA      3.4     0.2    -      -       -      -
   1586D  ASP*     1.4    73.9    -      -       -      +
   1588D  ILE*     1.4    64.3    +      -       +      +
   1590D  THR*     3.0    17.8    +      -       -      -
   1591D  TYR*     3.1    38.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE1588 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1584D  LEU*     3.4    23.1    +      -       +      +
   1585D  ALA*     3.3     8.0    +      -       -      +
   1586D  ASP      3.3     0.6    -      -       -      -
   1587D  LEU*     1.4    79.4    -      -       +      +
   1589D  GLU*     1.4    61.3    +      -       -      +
   1591D  TYR*     2.9    27.3    -      -       -      +
   1595D  PRO*     4.6    15.0    -      -       +      -
   1597D  LEU*     3.9    36.1    -      -       +      +
   1598D  PHE*     4.4    23.6    -      -       +      +
   1601D  ILE*     4.1    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU1589 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1530D  GLN*     5.5     2.3    -      -       -      +
   1533D  THR*     5.9     1.0    -      -       -      +
   1537D  TYR*     4.5     7.1    +      -       -      -
   1585D  ALA      3.0    15.9    +      -       -      +
   1586D  ASP*     3.3     8.9    +      -       -      +
   1588D  ILE*     1.4    76.7    -      -       -      +
   1590D  THR*     1.3    62.0    +      -       -      +
   1591D  TYR      4.6     2.1    -      -       -      +
   1598D  PHE*     3.4    42.0    -      -       +      +
   1806D  5P2      3.8    34.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR1590 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1586D  ASP*     3.1    27.8    +      -       -      +
   1587D  LEU*     3.0    20.1    +      -       -      -
   1589D  GLU*     1.3    76.5    -      -       -      +
   1591D  TYR*     1.3    70.5    +      -       -      +
   1805D  PX4      5.8     5.2    -      -       +      -
   1806D  5P2      4.4    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR1591 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1587D  LEU*     3.1    45.6    +      -       +      +
   1588D  ILE*     2.9    20.3    -      -       -      +
   1589D  GLU      4.6     1.8    -      -       -      -
   1590D  THR*     1.3    92.9    +      -       -      +
----------------------------------------------------------
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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