Contacts of the helix formed by residues 1672 - 1696 (chain C) in PDB entry 5Y3R


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 PHE1672 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1671C  VAL*     1.3    90.9    -      -       +      +
   1673C  THR*     1.3    59.3    +      -       -      +
   1675C  TYR*     3.8     2.2    -      -       -      +
   1676C  ILE*     2.9    37.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1673 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1654C  GLN*     3.0    31.8    +      -       -      +
   1657C  SER*     3.7     4.3    +      -       -      +
   1658C  SER*     2.3    38.4    +      -       -      +
   1671C  VAL      5.0     3.1    -      -       -      +
   1672C  PHE*     1.3    78.1    -      -       -      +
   1674C  THR*     1.3    58.0    +      -       -      +
   1676C  ILE*     4.4     0.2    -      -       -      -
   1677C  SER*     2.3    38.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1674 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1658C  SER*     3.4    24.2    -      -       -      -
   1671C  VAL*     3.0    27.1    +      -       -      -
   1673C  THR*     1.3    82.2    -      -       -      +
   1675C  TYR*     1.3    58.7    +      -       -      +
   1677C  SER*     3.0     5.1    -      -       -      -
   1678C  LEU*     2.9    40.7    +      -       +      +
   1721C  HIS*     5.6     8.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR1675 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427C  VAL*     4.2     8.3    +      -       -      +
    428C  PRO*     3.3    24.4    +      -       +      -
    429C  GLU*     4.1     6.4    -      -       -      +
    430C  VAL*     3.5    24.2    -      -       +      +
   1591C  LYS*     6.1     2.5    -      -       -      -
   1671C  VAL*     2.7    21.8    +      -       +      +
   1672C  PHE*     4.2     2.5    -      -       -      +
   1674C  THR*     1.3    70.3    -      -       -      +
   1676C  ILE*     1.3    69.4    +      -       +      +
   1677C  SER      2.9     1.6    -      -       -      -
   1678C  LEU*     4.1    18.2    -      -       +      +
   1679C  LEU*     2.8    48.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE1676 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1591C  LYS*     6.2     0.2    -      -       -      +
   1654C  GLN*     3.2    38.1    -      -       -      +
   1672C  PHE*     2.9    25.1    +      -       +      +
   1673C  THR*     3.8     0.4    -      -       -      -
   1675C  TYR*     1.3    84.9    -      -       +      +
   1677C  SER*     1.3    55.5    +      -       -      +
   1679C  LEU*     3.1    27.1    -      -       +      +
   1680C  ALA*     2.8    25.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER1677 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1654C  GLN*     2.6    14.1    +      -       -      +
   1655C  ILE*     3.4    28.7    -      -       -      +
   1658C  SER*     2.6    17.7    +      -       -      -
   1673C  THR      2.3    22.9    +      -       -      -
   1674C  THR*     3.0    13.9    -      -       -      -
   1675C  TYR      2.9     0.6    -      -       -      -
   1676C  ILE*     1.3    74.2    -      -       -      +
   1678C  LEU*     1.3    54.1    +      -       -      -
   1679C  LEU      3.1     1.1    -      -       -      -
   1680C  ALA*     2.3    25.7    +      -       -      -
   1681C  ASP*     2.7    20.6    +      -       -      +
   1721C  HIS*     6.2     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1678 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    430C  VAL*     5.6     4.0    -      -       +      -
   1655C  ILE*     5.6     0.4    -      -       +      -
   1674C  THR*     2.9    31.0    +      -       +      +
   1675C  TYR*     3.3    22.6    +      -       +      +
   1677C  SER*     1.3    69.9    -      -       -      +
   1679C  LEU*     1.3    50.5    +      -       -      +
   1681C  ASP*     2.4    26.8    -      -       -      +
   1682C  THR*     2.0    38.0    +      -       -      -
   1721C  HIS*     4.8    23.8    -      -       +      +
   1723C  PRO*     5.9     3.4    -      -       +      -
   1724C  MET*     3.5    22.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1679 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    430C  VAL*     5.8     2.9    -      -       -      -
   1590C  THR      5.5     2.5    -      -       -      +
   1591C  LYS*     4.3    38.4    -      -       +      +
   1675C  TYR*     2.8    38.4    +      -       +      +
   1676C  ILE*     3.1    43.1    -      -       +      +
   1678C  LEU*     1.3    72.7    -      -       -      +
   1680C  ALA*     1.3    65.7    +      -       +      +
   1682C  THR*     3.0     8.4    -      -       -      +
   1683C  LYS*     2.9    34.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA1680 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1651C  LYS*     3.7    26.7    -      -       +      +
   1654C  GLN*     5.4     1.1    -      -       +      -
   1655C  ILE*     3.5    19.3    -      -       +      -
   1676C  ILE*     2.8    19.9    +      -       +      +
   1677C  SER*     2.3    18.0    +      -       -      +
   1679C  LEU*     1.3    68.1    -      -       +      +
   1681C  ASP*     1.3    57.1    +      -       -      +
   1683C  LYS*     2.3    41.1    +      -       -      +
   1684C  LEU*     2.8    10.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP1681 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1655C  ILE*     3.1    38.1    -      -       +      +
   1677C  SER      2.7    13.8    +      -       -      -
   1678C  LEU*     2.4    42.7    -      -       -      +
   1680C  ALA*     1.3    71.3    -      -       -      +
   1682C  THR*     1.3    75.8    +      -       -      -
   1684C  LEU*     3.6     8.5    -      -       -      +
   1685C  ASP*     2.6    40.3    +      -       -      +
   1717C  LEU*     4.3    11.3    -      -       +      +
   1721C  HIS*     5.0     3.5    -      -       -      -
   1724C  MET*     3.1    17.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1682 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    430C  VAL*     5.2    14.4    -      -       +      +
   1678C  LEU      2.0    26.2    +      -       -      -
   1679C  LEU*     3.0    11.2    -      -       -      +
   1680C  ALA      2.8     0.2    +      -       -      -
   1681C  ASP*     1.3    84.4    +      -       -      +
   1683C  LYS*     1.3    68.7    +      -       -      +
   1685C  ASP*     2.8    31.0    +      -       +      +
   1686C  LEU*     3.1    12.9    +      -       +      +
   1724C  MET*     3.2    16.7    -      -       -      +
   1727C  ARG*     5.8     4.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS1683 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1590C  THR      3.4    20.3    +      -       -      -
   1591C  LYS*     2.2    43.0    +      -       -      +
   1593C  VAL*     3.9     3.2    -      -       -      +
   1594C  SER*     2.9    29.5    +      -       -      +
   1651C  LYS*     3.4    27.2    -      -       +      +
   1679C  LEU*     2.9    26.4    +      -       +      +
   1680C  ALA*     2.3    29.4    +      -       -      +
   1682C  THR*     1.3    66.5    -      -       -      +
   1684C  LEU*     1.3    51.9    +      -       +      +
   1685C  ASP      2.7     0.9    +      -       -      -
   1686C  LEU*     2.2    43.0    +      -       +      +
   1687C  HIS*     2.8    30.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1684 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1648C  LEU*     3.5    26.2    -      -       +      +
   1651C  LYS*     4.1     6.7    -      -       +      -
   1652C  ILE*     3.4    27.1    -      -       +      +
   1655C  ILE*     3.4    30.1    -      -       +      -
   1680C  ALA      2.8    12.0    +      -       -      +
   1681C  ASP      3.7     4.7    -      -       -      +
   1683C  LYS*     1.3    69.4    -      -       -      +
   1685C  ASP*     1.3    65.2    +      -       -      +
   1687C  HIS*     3.1    34.1    -      -       +      +
   1688C  LEU*     2.9    38.3    +      -       +      +
   1713C  VAL*     4.3     1.1    -      -       +      -
   1717C  LEU*     3.5    19.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP1685 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1681C  ASP*     2.6    24.8    +      -       -      +
   1682C  THR*     2.8    26.7    +      -       +      +
   1684C  LEU*     1.3    79.7    -      -       -      +
   1686C  LEU*     1.3    68.4    +      -       +      +
   1688C  LEU*     3.6     1.4    -      -       -      +
   1689C  LYS*     2.8    54.1    +      -       +      +
   1717C  LEU*     6.0     0.9    -      -       -      +
   1724C  MET*     4.8    11.5    -      -       -      +
   1727C  ARG*     4.4    25.0    +      -       -      +
   1728C  GLU*     5.4     0.9    +      -       -      -
   1731C  PRO*     6.0     0.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1686 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1594C  SER*     5.0     4.3    -      -       -      +
   1598C  ASN*     3.1    46.0    -      -       -      +
   1601C  LEU*     4.8     4.2    -      -       +      +
   1682C  THR*     3.1    14.5    +      -       +      +
   1683C  LYS*     2.2    29.5    +      -       +      +
   1685C  ASP*     1.3    72.5    -      -       +      +
   1687C  HIS*     1.3    56.9    +      -       +      +
   1689C  LYS*     2.7    27.8    +      -       +      -
   1690C  GLY*     2.8    15.9    +      -       -      -
   1810C  PRO*     4.2    30.7    -      -       +      +
   1811C  ARG*     6.3     0.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS1687 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1594C  SER*     3.8    15.7    -      -       -      -
   1597C  LEU*     5.1    14.7    -      -       +      +
   1598C  ASN*     5.4     1.6    -      -       -      -
   1640C  GLU*     5.1    10.1    +      -       +      +
   1643C  MET*     6.3     3.6    -      -       +      -
   1647C  ALA*     6.4     0.2    -      -       +      -
   1648C  LEU*     4.1    16.2    -      -       +      +
   1651C  LYS*     3.8    11.4    -      -       +      -
   1683C  LYS*     2.8    58.1    +      -       +      +
   1684C  LEU*     3.1    27.3    -      -       +      +
   1686C  LEU*     1.3    74.9    -      -       +      +
   1688C  LEU*     1.3    58.9    +      -       +      +
   1691C  GLN*     2.6    41.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1688 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1648C  LEU*     5.3     6.7    -      -       +      -
   1684C  LEU*     2.9    32.1    +      -       +      +
   1685C  ASP*     3.8     2.5    -      -       -      +
   1687C  HIS*     1.3    78.6    -      -       +      +
   1689C  LYS*     1.3    50.4    +      -       +      +
   1691C  GLN*     4.6     1.8    -      -       -      -
   1692C  ALA*     2.4    38.0    +      -       -      +
   1695C  LEU*     5.5     0.5    -      -       -      +
   1710C  LEU*     3.5    39.0    -      -       +      +
   1713C  VAL*     4.5    12.6    -      -       +      -
   1714C  LEU*     4.4    32.3    -      -       +      +
   1717C  LEU*     5.6     1.8    -      -       +      -
   1731C  PRO*     4.6    14.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS1689 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1685C  ASP*     2.8    40.7    +      -       +      +
   1686C  LEU*     2.7    16.5    +      -       +      +
   1688C  LEU*     1.3    72.7    -      -       -      +
   1690C  GLY*     1.3    61.2    -      -       -      +
   1692C  ALA*     2.9     8.5    +      -       -      +
   1693C  VAL*     2.8    32.0    +      -       -      +
   1727C  ARG*     3.2    54.4    +      -       -      +
   1730C  PRO*     5.2     4.5    -      -       -      +
   1731C  PRO*     3.8    25.8    -      -       +      -
   1810C  PRO      5.5     7.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1690 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1601C  LEU*     4.6    24.6    -      -       -      +
   1686C  LEU*     2.8    14.5    +      -       -      +
   1689C  LYS*     1.3    73.7    -      -       -      +
   1691C  GLN*     1.3    52.5    +      -       -      -
   1693C  VAL*     2.5    33.9    +      -       -      +
   1694C  THR*     3.0    11.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN1691 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1597C  LEU*     5.9     4.9    -      -       -      +
   1601C  LEU*     5.5     3.2    -      -       -      +
   1636C  ASP*     2.9    30.1    +      -       -      +
   1637C  SER*     3.2    20.0    -      -       -      +
   1639C  LEU*     4.4     3.8    -      -       -      +
   1640C  GLU*     3.4    27.7    -      -       +      +
   1686C  LEU      4.1     0.2    +      -       -      -
   1687C  HIS*     2.6    26.2    +      -       +      +
   1688C  LEU*     4.5     2.0    -      -       -      -
   1690C  GLY*     1.3    74.8    -      -       -      +
   1692C  ALA*     1.3    56.1    +      -       -      +
   1694C  THR*     3.0    34.8    -      -       -      +
   1695C  LEU*     3.0    36.1    +      -       +      +
   1710C  LEU*     6.4     1.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA1692 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1688C  LEU      2.4    32.3    +      -       -      +
   1689C  LYS*     2.9    10.0    +      -       -      +
   1691C  GLN*     1.3    77.7    -      -       -      +
   1693C  VAL*     1.3    56.4    +      -       +      +
   1695C  LEU*     3.2    20.2    +      -       +      +
   1696C  LEU*     2.9    30.8    +      -       +      +
   1700C  THR*     5.7     2.7    -      -       -      +
   1731C  PRO*     5.2     2.9    -      -       +      -
   1732C  GLY*     5.1    14.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL1693 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1605C  PHE*     5.1    21.8    -      -       +      -
   1689C  LYS      2.8    17.4    +      -       -      +
   1690C  GLY*     2.5    23.1    +      -       -      +
   1692C  ALA*     1.3    70.2    -      -       +      +
   1694C  THR*     1.3    57.8    +      -       -      +
   1695C  LEU      3.1     1.3    -      -       -      -
   1696C  LEU*     3.0    45.1    -      -       +      +
   1697C  PRO*     3.1     6.2    -      -       -      +
   1809C  ASP*     5.4    14.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1694 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1633C  TRP*     2.2    44.4    +      -       -      +
   1636C  ASP*     3.1    16.8    -      -       -      +
   1637C  SER*     3.4     9.8    +      -       -      +
   1690C  GLY      3.0     7.2    +      -       -      +
   1691C  GLN*     3.0    44.2    -      -       -      +
   1693C  VAL*     1.3    76.0    -      -       -      +
   1695C  LEU*     1.3    60.8    +      -       +      +
   1697C  PRO*     3.1    21.2    -      -       -      +
   1698C  PHE*     4.6     7.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1695 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1637C  SER*     5.1     9.6    -      -       -      +
   1688C  LEU      5.5     0.2    -      -       -      +
   1691C  GLN*     3.0    22.8    +      -       +      +
   1692C  ALA*     3.3    23.3    -      -       +      +
   1693C  VAL      3.1     0.4    -      -       -      -
   1694C  THR*     1.3    82.6    -      -       +      +
   1696C  LEU*     1.3    52.8    +      -       -      +
   1697C  PRO      3.1     0.7    -      -       -      -
   1698C  PHE*     2.4    32.5    +      -       +      +
   1699C  PHE*     3.0    27.0    +      -       -      +
   1700C  THR*     3.7    26.5    -      -       -      +
   1703C  THR*     3.1    31.6    -      -       +      +
   1704C  GLY*     4.5     7.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1696 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1692C  ALA*     2.9    21.6    +      -       +      +
   1693C  VAL*     3.0    41.5    -      -       +      +
   1695C  LEU*     1.3    75.3    -      -       -      +
   1697C  PRO*     1.3    63.6    -      -       +      +
   1698C  PHE      3.3     2.6    +      -       -      +
----------------------------------------------------------
 Back to top of page


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