Contacts of the helix formed by residues 979 - 1005 (chain E) in PDB entry 5F28


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 THR 979 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    975E  LEU*     4.1     6.1    -      -       -      +
    976E  PRO*     2.6    32.7    +      -       +      +
    977E  ALA      3.0     0.2    -      -       -      -
    978E  SER*     1.3    89.5    -      -       -      +
    980E  HIS*     1.3    64.0    +      -       -      +
    981E  ARG      3.4     1.3    -      -       -      -
    982E  GLU*     3.6    13.7    +      -       -      +
    983E  ILE*     3.3    27.9    +      -       -      +
   1037E  VAL*     6.2     0.7    -      -       -      -
   1041E  ALA*     3.6    37.2    -      -       +      +
   1044E  LYS*     5.2     5.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 980 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    972E  ILE*     3.5    36.6    +      -       +      +
    973E  PRO*     4.8     7.0    -      -       +      -
    975E  LEU*     3.4    20.7    +      -       +      -
    976E  PRO      3.2    20.2    -      -       -      -
    977E  ALA*     3.1    27.6    +      -       +      +
    979E  THR*     1.3    80.3    -      -       -      +
    981E  ARG*     1.3    64.5    +      -       -      +
    983E  ILE*     3.3     5.9    +      -       +      +
    984E  GLU*     2.9    43.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 981 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    977E  ALA      4.6     1.2    +      -       -      -
    978E  SER      4.8     4.4    +      -       -      +
    979E  THR      3.4     0.6    -      -       -      -
    980E  HIS*     1.3    77.9    -      -       -      +
    982E  GLU*     1.3    66.5    +      -       -      +
    984E  GLU*     3.4    11.3    +      -       -      +
    985E  MET*     3.1    51.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 982 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    978E  SER      5.3     2.1    +      -       -      +
    979E  THR*     3.6    16.4    +      -       -      +
    980E  HIS      3.3     1.2    -      -       -      -
    981E  ARG*     1.3    84.6    -      -       -      +
    983E  ILE*     1.3    63.8    +      -       -      +
    985E  MET*     3.6     5.7    +      -       -      +
    986E  ALA*     3.3    20.8    +      -       -      +
   1037E  VAL*     3.8    32.9    -      -       +      +
   1040E  GLN*     4.4    14.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 983 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    968E  VAL*     3.7    19.7    -      -       +      -
    972E  ILE*     4.0    15.7    -      -       +      -
    975E  LEU*     3.9    28.9    -      -       +      -
    979E  THR*     3.3    25.9    +      -       -      +
    980E  HIS*     3.3     5.7    +      -       +      +
    982E  GLU*     1.3    75.2    -      -       -      +
    984E  GLU*     1.3    65.9    +      -       -      +
    986E  ALA*     3.0     6.7    +      -       -      +
    987E  GLN*     2.9    36.1    +      -       -      +
   1034E  LEU*     4.1     8.5    -      -       +      -
   1037E  VAL*     3.6    22.7    -      -       +      +
   1038E  ILE*     3.9    12.6    -      -       +      -
   1041E  ALA*     4.6     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 984 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    972E  ILE*     4.3    15.0    -      -       +      +
    980E  HIS*     2.9    37.6    +      -       -      +
    981E  ARG*     3.9     8.6    -      -       -      +
    983E  ILE*     1.3    75.4    -      -       -      +
    985E  MET*     1.3    59.1    +      -       +      +
    987E  GLN*     3.2    18.5    +      -       -      +
    988E  LYS*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 985 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    981E  ARG*     3.1    46.8    +      -       +      +
    982E  GLU*     3.9     5.8    -      -       -      +
    984E  GLU*     1.3    76.7    -      -       +      +
    986E  ALA*     1.3    58.0    +      -       -      +
    988E  LYS*     3.5    27.3    +      -       +      +
    989E  LEU*     3.0    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 986 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    982E  GLU      3.3    10.5    +      -       -      +
    983E  ILE*     3.0     9.9    +      -       -      +
    985E  MET*     1.3    75.6    -      -       -      +
    987E  GLN*     1.3    65.8    +      -       -      +
    989E  LEU*     3.3    12.9    +      -       +      +
    990E  LEU*     3.1    25.7    +      -       -      +
   1030E  ASP      5.2     2.9    -      -       -      +
   1033E  ASN*     4.6    13.5    -      -       -      +
   1034E  LEU*     3.8    30.7    -      -       +      +
   1037E  VAL*     5.1     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 987 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    965E  LEU*     3.8    30.7    +      -       +      +
    968E  VAL*     3.6    28.5    -      -       +      +
    969E  ASP*     2.8    29.5    +      -       -      +
    972E  ILE*     3.3    23.9    -      -       -      +
    983E  ILE*     2.9    19.6    +      -       +      +
    984E  GLU*     3.2    16.9    +      -       -      +
    986E  ALA*     1.3    73.2    -      -       -      +
    988E  LYS*     1.3    65.9    +      -       -      +
    990E  LEU*     2.9    15.7    +      -       -      +
    991E  ASN*     3.0    18.2    +      -       -      +
   1034E  LEU*     4.6     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 988 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    984E  GLU      2.9    17.1    +      -       -      +
    985E  MET*     3.8    27.8    -      -       +      +
    987E  GLN*     1.3    75.2    -      -       -      +
    989E  LEU*     1.3    62.7    +      -       -      +
    991E  ASN*     3.3    14.2    +      -       +      +
    992E  SER*     3.1    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 989 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    985E  MET      3.0    14.7    +      -       -      +
    986E  ALA*     3.4    14.8    -      -       +      +
    987E  GLN      3.1     0.2    -      -       -      -
    988E  LYS*     1.3    78.3    -      -       -      +
    990E  LEU*     1.3    57.2    +      -       -      +
    992E  SER*     3.3     9.7    +      -       -      -
    993E  ASP*     2.9    39.5    +      -       -      +
   1030E  ASP*     3.4    39.3    -      -       +      +
   1033E  ASN*     5.7     6.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 990 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    961E  LEU*     3.7    32.6    -      -       +      +
    964E  LEU*     4.4     4.5    -      -       +      -
    965E  LEU*     4.2     7.9    -      -       +      -
    986E  ALA      3.1    14.7    +      -       -      +
    987E  GLN      2.9     8.7    +      -       -      +
    989E  LEU*     1.3    73.6    -      -       -      +
    991E  ASN*     1.3    65.4    +      -       -      +
    993E  ASP*     3.3    11.9    +      -       -      +
    994E  LEU*     3.0    24.1    +      -       -      +
   1027E  LEU*     3.7    34.3    -      -       +      +
   1030E  ASP*     3.9     8.1    -      -       +      +
   1031E  ALA*     3.8    23.3    -      -       +      +
   1034E  LEU*     3.8    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 991 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73D  ASN*     3.4    40.5    +      -       +      +
    961E  LEU*     4.7     2.7    -      -       -      +
    965E  LEU*     3.6    22.2    -      -       -      +
    987E  GLN*     3.0    16.8    +      -       -      +
    988E  LYS*     3.5    15.7    -      -       +      +
    990E  LEU*     1.3    76.3    -      -       -      +
    992E  SER*     1.3    61.4    +      -       -      +
    994E  LEU*     3.4    11.0    +      -       -      +
    995E  GLY*     3.2    17.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 992 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    988E  LYS*     3.1    21.6    +      -       -      +
    989E  LEU*     3.6    13.6    -      -       -      -
    991E  ASN*     1.3    75.3    -      -       -      +
    993E  ASP*     1.3    67.5    +      -       -      +
    995E  GLY*     3.2     3.4    +      -       -      +
    996E  GLU*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 993 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    989E  LEU*     2.9    30.6    +      -       -      +
    990E  LEU*     3.3     8.5    +      -       -      +
    992E  SER*     1.3    76.2    -      -       -      +
    994E  LEU*     1.3    58.2    +      -       -      +
    996E  GLU*     3.2     9.1    +      -       -      +
    997E  LEU*     2.9    29.5    +      -       -      +
   1023E  ALA      4.9     5.0    -      -       -      +
   1026E  ALA*     5.0     4.5    -      -       -      +
   1027E  LEU*     3.9    30.4    -      -       +      +
   1030E  ASP*     2.7    39.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 994 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  LEU*     5.9     0.2    -      -       +      -
     70D  THR*     3.8    28.0    -      -       -      +
     71D  GLU*     4.1    14.6    -      -       +      +
    954E  VAL*     5.1     4.0    -      -       +      +
    957E  VAL*     4.7    11.4    -      -       +      -
    958E  GLY*     3.8    28.3    -      -       -      +
    961E  LEU*     3.8    21.3    -      -       +      -
    990E  LEU      3.0    12.9    +      -       -      +
    991E  ASN*     3.6    13.2    -      -       -      +
    993E  ASP*     1.3    76.5    -      -       -      +
    995E  GLY*     1.3    57.4    +      -       -      +
    997E  LEU*     3.1     9.7    +      -       +      +
    998E  ILE*     2.9    47.8    +      -       +      +
   1027E  LEU*     3.8     7.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 995 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71D  GLU*     4.6    14.2    -      -       -      +
    991E  ASN      3.2     8.0    +      -       -      -
    992E  SER*     3.2     6.3    +      -       -      -
    994E  LEU*     1.3    78.8    -      -       -      +
    996E  GLU*     1.3    62.2    +      -       -      +
    998E  ILE*     3.3     8.5    +      -       -      +
    999E  SER*     3.0    27.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 996 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    992E  SER*     2.9    19.9    +      -       -      +
    993E  ASP*     3.5    11.7    -      -       -      +
    995E  GLY*     1.3    75.7    -      -       -      +
    997E  LEU*     1.3    56.5    +      -       -      +
    999E  SER*     3.3     8.4    +      -       -      -
   1000E  LYS*     2.9    54.5    +      -       +      +
   1023E  ALA*     4.6     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 997 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    954E  VAL*     4.2    22.4    -      -       +      -
    957E  VAL*     4.1    27.4    -      -       +      -
    993E  ASP      2.9    13.6    +      -       -      +
    994E  LEU*     3.5    11.4    -      -       +      +
    996E  GLU*     1.3    76.1    -      -       -      +
    998E  ILE*     1.3    58.7    +      -       -      +
   1000E  LYS*     3.4     1.3    +      -       -      +
   1001E  MET*     3.0    27.7    +      -       -      +
   1020E  MET*     3.3    39.3    -      -       +      +
   1023E  ALA*     4.0    12.7    -      -       +      +
   1024E  ALA*     3.8    26.2    -      -       +      +
   1027E  LEU*     5.0     6.3    -      -       +      -
    938F  MET*     4.3     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 998 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  LEU*     4.2    20.6    -      -       +      +
     70D  THR*     5.0     0.4    -      -       -      +
     71D  GLU*     3.7    46.7    -      -       +      +
    954E  VAL*     4.1    19.3    -      -       +      -
    994E  LEU*     2.9    34.7    +      -       +      +
    995E  GLY*     3.7     5.2    -      -       -      +
    997E  LEU*     1.3    77.3    -      -       -      +
    999E  SER*     1.3    64.2    +      -       -      +
   1001E  MET*     3.2    12.7    +      -       +      +
   1002E  LYS*     3.0    49.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 999 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    995E  GLY      3.0    17.4    +      -       -      -
    996E  GLU*     3.7     9.8    +      -       -      -
    998E  ILE*     1.3    78.3    -      -       -      +
   1000E  LYS*     1.3    66.5    +      -       -      +
   1002E  LYS*     3.2    10.4    +      -       -      +
   1003E  LEU*     3.1    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS1000 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    996E  GLU*     2.9    37.8    +      -       -      +
    997E  LEU*     3.8     3.6    -      -       -      +
    999E  SER*     1.3    77.9    -      -       -      +
   1001E  MET*     1.3    56.6    +      -       -      +
   1003E  LEU*     3.4    20.0    +      -       +      +
   1004E  ALA*     2.9    27.9    +      -       -      +
   1016E  TYR*     4.0     7.1    -      -       +      +
   1019E  GLN*     2.9    47.9    +      -       +      +
   1020E  MET*     3.7    23.3    -      -       -      +
   1023E  ALA*     4.2     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET1001 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  LEU*     3.8    22.0    -      -       +      -
    950E  TYR*     3.3    49.6    -      -       +      +
    951E  VAL*     3.8    14.1    -      -       +      -
    954E  VAL*     3.8    13.7    -      -       +      -
    997E  LEU      3.0    18.9    +      -       -      +
    998E  ILE*     3.5     9.6    -      -       +      +
   1000E  LYS*     1.3    77.0    -      -       -      +
   1002E  LYS*     1.3    89.2    +      -       +      +
   1004E  ALA*     3.1     3.0    +      -       -      +
   1005E  GLN*     2.9    32.2    +      -       -      +
   1020E  MET*     3.6    21.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS1002 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  LEU*     5.7     3.1    -      -       -      -
     68D  LYS*     6.3     1.2    -      -       -      +
     71D  GLU*     5.0     6.3    +      -       -      -
    998E  ILE*     3.0    40.4    +      -       +      +
    999E  SER*     3.2     8.5    +      -       -      +
   1001E  MET*     1.3    89.9    -      -       +      +
   1003E  LEU*     1.3    60.1    +      -       +      +
   1005E  GLN*     3.6    11.4    +      -       -      +
   1006E  GLN*     3.2    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1003 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    999E  SER*     3.1    19.2    +      -       -      +
   1000E  LYS*     3.7    19.1    -      -       -      +
   1002E  LYS*     1.3    77.5    -      -       +      +
   1004E  ALA*     1.3    64.3    +      -       -      +
   1005E  GLN      3.1     1.8    -      -       -      -
   1006E  GLN*     2.9    32.0    +      -       -      +
   1007E  TYR*     3.1    26.2    +      -       +      +
   1016E  TYR*     3.7    38.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1004 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    947E  PRO*     4.6     4.9    -      -       -      +
    950E  TYR*     3.9    23.5    -      -       +      -
   1000E  LYS      2.9    17.3    +      -       -      +
   1001E  MET*     3.1     7.6    +      -       -      +
   1003E  LEU*     1.3    76.4    -      -       -      +
   1005E  GLN*     1.3    59.7    +      -       -      +
   1006E  GLN      3.6     0.2    +      -       -      -
   1007E  TYR*     4.0    14.9    +      -       -      +
   1008E  VAL*     4.1     5.7    -      -       -      +
   1013E  GLN*     5.1     6.7    -      -       -      +
   1016E  TYR*     3.8    29.7    -      -       -      +
   1017E  LYS*     3.9     7.4    -      -       +      +
   1020E  MET*     4.5     2.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1005 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64D  LYS*     5.9     1.8    -      -       -      +
    947E  PRO*     2.6    33.6    +      -       +      +
    948E  GLU*     3.7     9.5    +      -       -      +
    950E  TYR*     3.7    21.7    -      -       +      +
    951E  VAL*     3.7    27.0    -      -       -      +
   1001E  MET*     2.9    26.0    +      -       -      +
   1002E  LYS*     3.8     9.5    -      -       -      +
   1003E  LEU      3.1     0.2    -      -       -      -
   1004E  ALA*     1.3    75.2    -      -       -      +
   1006E  GLN*     1.3    59.1    +      -       -      +
   1007E  TYR      3.6     0.2    -      -       -      -
   1008E  VAL*     3.1    23.2    -      -       +      +
----------------------------------------------------------
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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