Contacts of the helix formed by residues 1008 - 1034 (chain G) in PDB entry 6C3P


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 GLY1008 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1006G  SER      4.2     0.4    +      -       -      -
   1007G  ALA*     1.3    77.5    -      -       -      +
   1009G  ILE*     1.3    67.7    +      -       -      -
   1010G  LEU*     3.0     5.2    -      -       -      -
   1011G  LEU*     2.9    30.0    +      -       -      +
   1012G  LEU*     3.3     5.9    +      -       -      +
   1091G  LYS*     5.0     6.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1009 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1007G  ALA      3.6     2.6    +      -       -      -
   1008G  GLY*     1.3    71.7    -      -       -      -
   1010G  LEU*     1.3    61.3    +      -       +      +
   1012G  LEU*     2.9    30.3    +      -       +      +
   1013G  SER*     3.0    13.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1010 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1008G  GLY*     3.0     2.0    -      -       -      -
   1009G  ILE*     1.3    86.9    -      -       +      +
   1011G  LEU*     1.3    58.2    +      -       +      +
   1013G  SER*     3.4     9.1    +      -       -      -
   1014G  LEU*     2.8    38.9    +      -       +      +
   1087G  TRP*     5.4    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1011 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1007G  ALA*     3.6    16.6    -      -       +      -
   1008G  GLY*     2.9    19.9    +      -       -      +
   1010G  LEU*     1.3    77.9    -      -       +      +
   1012G  LEU*     1.3    58.5    +      -       +      +
   1014G  LEU*     4.1     4.4    -      -       +      +
   1015G  LEU*     2.9    34.5    +      -       -      +
   1084G  THR*     4.0    18.9    -      -       +      +
   1087G  TRP*     3.4    32.3    -      -       +      -
   1088G  THR*     3.5    40.4    -      -       -      +
   1091G  LYS*     3.6    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1012 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1004G  LEU*     3.5    67.8    -      -       +      +
   1005G  SER*     5.5     0.2    -      -       -      -
   1007G  ALA*     4.5     3.8    -      -       +      +
   1008G  GLY      3.6    11.4    -      -       -      +
   1009G  ILE*     2.9    19.1    +      -       +      +
   1011G  LEU*     1.3    76.4    -      -       -      +
   1013G  SER*     1.3    63.8    +      -       -      +
   1015G  LEU*     3.9     9.1    -      -       +      +
   1016G  VAL*     3.0    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER1013 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1009G  ILE*     3.0    12.4    +      -       -      -
   1010G  LEU*     3.6    13.2    -      -       -      -
   1012G  LEU*     1.3    77.3    -      -       -      +
   1014G  LEU*     1.3    63.6    +      -       -      +
   1016G  VAL*     4.0     2.0    -      -       -      +
   1017G  PHE*     2.9    50.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1014 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1010G  LEU*     2.8    32.2    +      -       +      +
   1011G  LEU*     4.1     5.2    -      -       +      +
   1013G  SER*     1.3    72.6    -      -       -      +
   1015G  LEU*     1.3    55.3    +      -       -      +
   1017G  PHE*     4.1     4.4    -      -       +      -
   1018G  SER*     2.4    45.3    +      -       -      +
   1080G  VAL*     4.1    17.3    -      -       +      -
   1084G  THR*     3.2    32.8    -      -       +      +
   1087G  TRP*     5.8     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1015 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1011G  LEU      2.9    19.7    +      -       -      +
   1012G  LEU*     3.9    10.3    -      -       +      +
   1014G  LEU*     1.3    77.0    -      -       -      +
   1016G  VAL*     1.3    77.9    +      -       +      +
   1018G  SER*     3.2     5.0    +      -       -      -
   1019G  GLN*     3.0    42.7    +      -       +      +
   1081G  THR*     6.0     0.4    -      -       -      -
   1084G  THR*     3.7    12.9    -      -       +      +
   1085G  VAL*     4.9    17.5    -      -       +      -
   1088G  THR*     4.2    24.2    -      -       +      +
   1139G  LEU*     4.5    20.9    -      -       +      -
   1143G  SER*     5.1     4.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1016 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1012G  LEU*     3.0    29.0    +      -       +      +
   1013G  SER*     4.0     2.9    -      -       -      +
   1015G  LEU*     1.3    88.9    -      -       +      +
   1017G  PHE*     1.3    67.9    +      -       +      +
   1019G  GLN*     3.4     3.3    +      -       -      +
   1020G  LEU*     3.0    46.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1017 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1013G  SER*     2.9    47.7    +      -       -      +
   1014G  LEU*     4.1     5.6    -      -       +      +
   1016G  VAL*     1.3    79.3    -      -       +      +
   1018G  SER*     1.3    62.8    +      -       -      +
   1020G  LEU*     4.7     7.6    -      -       +      -
   1021G  LEU*     2.9    51.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER1018 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1014G  LEU*     2.4    40.9    +      -       -      +
   1015G  LEU*     3.5     6.3    -      -       -      -
   1016G  VAL      3.2     0.2    -      -       -      -
   1017G  PHE*     1.3    75.3    -      -       -      +
   1019G  GLN*     1.3    65.2    +      -       -      +
   1022G  LYS*     2.8    27.9    +      -       -      +
   1077G  LEU*     4.0    11.3    -      -       -      +
   1080G  VAL*     4.0    11.2    -      -       -      +
   1081G  THR*     3.3    33.2    +      -       -      -
   1084G  THR*     4.2     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1019 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1015G  LEU*     3.0    32.9    +      -       +      +
   1016G  VAL*     3.9     3.6    -      -       -      +
   1018G  SER*     1.3    75.3    -      -       -      +
   1020G  LEU*     1.3    66.8    +      -       +      +
   1022G  LYS*     3.3     4.6    -      -       -      +
   1023G  HIS*     3.0    50.2    +      -       -      +
   1081G  THR*     3.1    26.6    -      -       -      +
   1085G  VAL*     4.3    14.1    -      -       -      +
   1140G  GLU*     5.7     2.8    +      -       -      +
   1143G  SER*     3.0    34.8    +      -       -      +
   1144G  ARG*     4.2     5.1    +      -       -      +
   1147G  LEU*     4.2    11.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1020 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1016G  VAL*     3.0    41.4    +      -       +      +
   1017G  PHE*     4.0     7.6    -      -       +      +
   1019G  GLN*     1.3    79.1    -      -       +      +
   1021G  LEU*     1.3    67.2    +      -       +      +
   1023G  HIS*     3.9     0.9    -      -       -      +
   1024G  MET*     2.9    44.3    +      -       +      +
   1147G  LEU*     3.9    29.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1021 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1017G  PHE*     2.9    44.1    +      -       +      +
   1020G  LEU*     1.3    76.0    -      -       +      +
   1022G  LYS*     1.3    64.5    +      -       -      +
   1024G  MET*     4.5     9.6    -      -       +      -
   1025G  VAL*     2.9    32.8    +      -       +      +
   1077G  LEU*     3.5    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS1022 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    548G  THR*     3.4    25.3    -      -       -      +
   1018G  SER      2.8    20.0    +      -       -      +
   1019G  GLN*     3.3     4.7    -      -       -      +
   1021G  LEU*     1.3    77.2    -      -       -      +
   1023G  HIS*     1.3    94.1    +      -       +      +
   1025G  VAL*     3.1     4.2    +      -       -      +
   1026G  LEU*     2.9    40.5    +      -       +      +
   1074G  GLY*     4.8     3.0    -      -       -      +
   1077G  LEU*     3.3    16.4    -      -       +      +
   1078G  CYS*     3.5    40.5    -      -       +      +
   1081G  THR*     3.7    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS1023 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    548G  THR*     5.3     1.0    -      -       -      +
   1019G  GLN*     3.0    25.6    +      -       -      -
   1022G  LYS*     1.3   118.2    +      -       +      +
   1024G  MET*     1.3    59.7    +      -       -      +
   1026G  LEU*     3.2    17.8    +      -       +      +
   1027G  VAL*     2.9    32.4    +      -       -      +
   1144G  ARG*     4.0    15.4    -      -       +      +
   1147G  LEU*     3.5    35.6    -      -       +      +
   1148G  LEU*     3.2    39.7    -      -       +      +
   1151G  SER*     5.2     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET1024 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1020G  LEU*     2.9    39.5    +      -       +      +
   1021G  LEU*     4.0    10.3    -      -       +      +
   1023G  HIS*     1.3    78.1    -      -       -      +
   1025G  VAL*     1.3    56.9    +      -       +      +
   1027G  VAL*     3.5     7.5    +      -       -      +
   1028G  ALA*     2.8    27.8    +      -       -      +
   1147G  LEU*     5.5     5.4    -      -       +      -
   1151G  SER*     6.2     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL1025 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1021G  LEU*     2.9    26.9    +      -       +      +
   1022G  LYS*     3.1     5.1    +      -       -      +
   1024G  MET*     1.3    75.3    -      -       +      +
   1026G  LEU*     1.3    61.4    +      -       +      +
   1028G  ALA*     3.5     8.0    -      -       +      +
   1029G  ILE*     2.8    32.0    +      -       +      +
   1070G  LEU*     4.1    24.0    -      -       +      +
   1073G  LEU*     3.6    37.5    -      -       +      -
   1074G  GLY*     4.3     9.4    -      -       -      +
   1077G  LEU*     4.6     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1026 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    552G  ILE*     3.9    26.9    -      -       +      -
    584G  HIS*     6.0     6.1    -      -       +      -
   1022G  LYS*     2.9    45.0    +      -       +      +
   1023G  HIS*     3.3    26.5    -      -       +      +
   1025G  VAL*     1.3    75.1    -      -       -      +
   1027G  VAL*     1.3    54.7    +      -       +      +
   1029G  ILE*     3.0    24.3    -      -       +      +
   1030G  ASP*     2.6    30.1    -      -       -      +
   1074G  GLY*     5.1    13.7    -      -       -      +
   1148G  LEU*     5.6     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL1027 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1023G  HIS      2.9    19.4    +      -       -      +
   1024G  MET*     3.7     7.6    -      -       -      +
   1026G  LEU*     1.3    75.0    -      -       +      +
   1028G  ALA*     1.3    62.4    +      -       -      +
   1030G  ASP*     2.6    21.4    -      -       -      +
   1031G  TYR*     2.9    27.4    +      -       +      +
   1148G  LEU*     6.2     2.2    -      -       +      -
   1151G  SER*     3.9    27.1    -      -       -      +
   1152G  ALA*     5.9     0.4    -      -       -      -
   1155G  VAL*     3.5    29.4    -      -       +      -
   1286G  TYR*     5.3     7.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1028 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024G  MET      2.8    21.9    +      -       -      +
   1025G  VAL*     3.2    11.9    +      -       +      +
   1027G  VAL*     1.3    74.9    -      -       -      +
   1029G  ILE*     1.3    57.7    +      -       -      +
   1031G  TYR*     3.8     3.3    -      -       -      +
   1032G  TRP*     2.9    35.6    +      -       -      +
   1070G  LEU*     4.4     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE1029 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    552G  ILE*     6.2     4.0    -      -       +      -
    555G  VAL*     6.2     1.1    -      -       +      -
   1025G  VAL*     2.8    22.3    +      -       +      +
   1026G  LEU*     3.0    34.3    -      -       +      +
   1028G  ALA*     1.3    72.5    -      -       -      +
   1030G  ASP*     1.3    61.6    +      -       +      +
   1032G  TRP*     3.4     2.9    +      -       -      +
   1033G  LEU*     2.8    24.9    +      -       -      +
   1067G  PHE*     3.6    24.3    -      -       +      +
   1070G  LEU*     3.6    25.8    -      -       +      +
   1071G  CYS*     3.3    52.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1030 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    577G  PHE*     5.4     4.3    -      -       +      -
    580G  LEU*     4.3    24.6    -      -       +      +
    584G  HIS*     4.3    13.7    +      -       -      -
   1026G  LEU*     2.6    22.8    +      -       -      +
   1027G  VAL*     2.6    32.3    -      -       -      +
   1029G  ILE*     1.3    76.9    -      -       +      +
   1031G  TYR*     1.3    59.9    +      -       -      -
   1032G  TRP      3.0     1.6    -      -       -      -
   1033G  LEU*     3.0    12.2    +      -       +      +
   1034G  ALA      3.0    22.2    +      -       -      -
   1067G  PHE*     5.5     0.4    -      -       -      -
   1282G  LEU*     3.8     7.1    -      -       -      +
   1286G  TYR*     2.5    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR1031 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1027G  VAL*     2.9    24.3    +      -       +      +
   1028G  ALA*     4.2     2.9    -      -       -      +
   1030G  ASP*     1.3    82.4    +      -       -      +
   1032G  TRP*     1.3    59.0    +      -       +      +
   1034G  ALA*     3.0    18.0    -      -       -      +
   1035G  LYS*     3.8    13.7    +      -       +      +
   1155G  VAL*     4.7     5.6    -      -       +      -
   1158G  TYR*     3.1    35.1    +      +       -      -
   1159G  VAL*     3.8    21.8    -      -       +      -
   1279G  LEU*     3.6    29.8    -      -       +      +
   1282G  LEU*     3.4    30.9    -      -       +      +
   1286G  TYR*     5.0     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP1032 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1028G  ALA      2.9    21.0    +      -       -      +
   1029G  ILE      3.7     1.8    -      -       -      +
   1031G  TYR*     1.3    78.4    -      -       +      +
   1033G  LEU*     1.3    59.9    +      -       -      +
   1034G  ALA      3.1     1.1    -      -       -      -
   1035G  LYS*     3.0    58.5    +      -       +      +
   1036G  TRP*     3.3     7.7    +      +       +      +
   1063G  TYR*     3.0    56.9    -      +       +      -
   1066G  VAL*     3.3    23.8    -      -       +      -
   1067G  PHE*     3.3    42.6    -      +       +      -
   1070G  LEU*     4.1    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1033 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    559G  PHE*     3.6    34.1    -      -       +      -
    576G  ALA*     4.8    10.5    -      -       +      -
    577G  PHE*     4.8    13.7    -      -       +      -
    580G  LEU*     3.7    19.1    -      -       +      -
   1029G  ILE      2.8    15.6    +      -       -      +
   1030G  ASP*     3.1    13.0    -      -       -      +
   1032G  TRP*     1.3    74.1    -      -       -      +
   1034G  ALA*     1.3    58.0    +      -       -      -
   1036G  TRP*     2.7    57.6    +      -       +      +
   1037G  THR*     3.2    12.6    +      -       +      +
   1067G  PHE*     3.9    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA1034 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    577G  PHE*     6.2     1.9    -      -       -      -
   1030G  ASP      3.0     7.3    +      -       -      -
   1031G  TYR*     3.0    19.3    -      -       +      +
   1033G  LEU*     1.3    77.2    -      -       -      +
   1035G  LYS*     1.3    56.8    +      -       +      +
   1037G  THR*     2.9    25.9    +      -       -      -
   1038G  ASP*     4.1     5.2    -      -       -      +
   1276G  SER*     6.0     0.5    -      -       -      -
   1278G  GLY*     4.7     8.9    -      -       -      +
   1279G  LEU*     4.2    26.5    -      -       +      +
   1282G  LEU*     3.6    23.6    -      -       +      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il