Contacts of the helix formed by residues 155 - 177 (chain B) in PDB entry 1JUO


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 155 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  PHE*     4.5     0.4    -      -       -      -
    118B  GLY      4.5     0.9    -      -       -      -
    119B  THR*     3.8    21.1    -      -       +      -
    150B  THR*     3.2    29.2    +      -       +      +
    153B  LYS      4.0     0.9    +      -       -      +
    154B  ILE*     1.3    79.2    -      -       -      +
    156B  PHE*     1.3    63.4    +      -       -      +
    157B  ASP*     3.6    10.6    +      -       -      +
    158B  ASP*     3.1    26.9    +      -       -      +
    159B  TYR*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 156 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63B  ILE*     3.9     5.8    -      -       +      -
     64B  ALA*     3.7    34.1    -      -       +      -
     65B  GLY*     4.0    10.8    -      -       -      +
     70B  PHE*     3.8    22.7    -      +       -      -
    102B  LEU*     5.0     2.0    -      -       +      -
    106B  ARG*     3.7    43.7    -      -       +      -
    109B  PHE*     3.6    39.4    -      +       +      -
    118B  GLY*     3.4    13.4    +      -       -      +
    155B  THR*     1.3    73.8    -      -       -      +
    157B  ASP*     1.3    56.1    +      -       -      +
    159B  TYR*     3.2     9.0    +      +       -      +
    160B  ILE*     3.0    57.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 157 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68B  LYS*     5.8     2.7    -      -       +      +
     69B  PRO      4.4     6.1    -      -       -      +
     70B  PHE*     3.3    25.9    -      -       +      -
     71B  ASN*     2.6    41.7    +      -       -      +
     74B  THR*     2.7    27.5    +      -       -      +
    155B  THR*     3.6     9.5    +      -       -      +
    156B  PHE*     1.3    79.8    -      -       -      +
    158B  ASP*     1.3    64.6    +      -       -      +
    160B  ILE*     3.4     4.7    +      -       -      +
    161B  ALA*     3.2    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 158 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  ARG*     3.0    41.5    +      -       -      -
     71B  ASN*     3.7    16.8    +      -       -      -
    148B  TYR*     3.3    29.5    -      -       +      +
    150B  THR*     3.9     6.2    +      -       -      +
    154B  ILE*     3.8    17.5    -      -       +      -
    155B  THR*     3.1    17.2    +      -       -      +
    157B  ASP*     1.3    78.4    -      -       -      +
    159B  TYR*     1.3    61.4    +      -       -      +
    161B  ALA*     3.4     6.0    +      -       -      +
    162B  CYS*     2.8    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 159 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105B  TRP      3.0    33.4    +      -       -      -
    108B  HIS*     3.8     8.7    -      -       -      +
    109B  PHE*     3.4    38.1    +      +       +      -
    120B  VAL*     5.3     0.9    -      -       +      -
    125B  LEU*     3.8    20.9    -      -       +      -
    128B  ALA*     4.1    10.6    -      -       +      +
    129B  LEU*     4.0    17.5    -      -       +      -
    132B  MET*     3.7    19.4    -      -       -      -
    154B  ILE*     3.9     9.1    -      -       +      +
    155B  THR      3.0    14.0    +      -       -      +
    156B  PHE*     3.2    13.0    +      +       -      +
    158B  ASP*     1.3    78.6    -      -       -      +
    160B  ILE*     1.3    69.1    +      -       +      +
    162B  CYS*     3.4     8.3    -      -       -      +
    163B  CYS*     2.9    51.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 160 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70B  PHE*     3.8    21.3    -      -       +      -
     74B  THR*     4.3     5.8    -      -       -      +
     78B  MET*     4.3    14.8    -      -       -      -
    102B  LEU*     4.0    26.2    -      -       +      +
    105B  TRP*     4.1    22.4    -      -       +      -
    156B  PHE*     3.0    45.9    +      -       +      +
    157B  ASP      3.6     7.0    -      -       -      +
    158B  ASP      3.2     0.2    -      -       -      -
    159B  TYR*     1.3    84.7    -      -       +      +
    161B  ALA*     1.3    60.7    +      -       -      +
    162B  CYS      3.0     1.1    -      -       -      -
    163B  CYS*     2.7    24.8    +      -       -      +
    164B  VAL*     2.8    22.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 161 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71B  ASN*     5.5     1.1    -      -       -      +
     73B  GLU*     5.8     1.6    -      -       +      -
     74B  THR*     3.7    22.4    +      -       -      +
     77B  LEU*     3.6    23.9    -      -       +      +
    148B  TYR*     4.3    13.9    -      -       +      -
    157B  ASP      3.2     6.6    +      -       -      +
    158B  ASP*     3.7    12.6    -      -       -      +
    160B  ILE*     1.3    79.0    -      -       -      +
    162B  CYS*     1.3    62.9    +      -       -      +
    164B  VAL*     3.3     6.6    +      -       -      +
    165B  LYS*     3.1    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 162 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    196A  MET*     3.7    12.3    -      -       -      +
    125B  LEU*     5.1     4.7    -      -       -      -
    129B  LEU*     5.1    11.0    -      -       -      -
    144B  ILE*     3.6    28.3    -      -       +      -
    148B  TYR*     3.7    23.3    -      -       +      -
    154B  ILE*     6.2     0.4    -      -       +      -
    158B  ASP      2.8    19.8    +      -       -      +
    159B  TYR*     3.4    10.8    -      -       -      +
    161B  ALA*     1.3    77.6    -      -       -      +
    163B  CYS*     1.3    56.8    +      -       -      +
    166B  LEU*     2.9    44.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 163 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105B  TRP*     3.7    38.6    -      -       +      +
    129B  LEU*     5.1     4.9    -      -       -      -
    132B  MET*     4.3    15.5    -      -       +      +
    134B  PHE*     5.8     0.5    -      -       -      -
    159B  TYR*     2.9    57.2    +      -       -      -
    160B  ILE*     2.7    16.2    +      -       -      +
    162B  CYS*     1.3    73.6    -      -       -      +
    164B  VAL*     1.3    57.9    +      -       -      +
    166B  LEU*     3.5     8.0    +      -       -      +
    167B  ARG*     3.1    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 164 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77B  LEU*     3.6    38.8    -      -       +      +
     78B  MET*     4.2    20.6    -      -       +      -
     81B  MET*     3.9    21.4    -      -       +      +
    105B  TRP*     3.6    24.5    -      -       +      -
    160B  ILE*     2.8    22.1    +      -       +      +
    161B  ALA*     3.7     8.1    -      -       -      +
    162B  CYS      3.3     0.2    -      -       -      -
    163B  CYS*     1.3    76.1    -      -       -      +
    165B  LYS*     1.3    61.8    +      -       -      +
    167B  ARG*     3.3     4.9    +      -       -      +
    168B  ALA*     3.1    22.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 165 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  GLU*     5.5     1.2    +      -       -      -
    165A  LYS*     5.1     6.1    -      -       -      +
    195A  VAL      4.7     4.6    +      -       -      -
    196A  MET*     4.1    24.8    +      -       +      -
    198A  VAL*     3.9    26.5    +      -       -      -
     73B  GLU*     5.7     1.6    -      -       -      +
     76B  ARG*     5.8     0.4    -      -       -      +
     77B  LEU*     4.0    19.7    -      -       +      -
    147B  ARG*     4.7     6.5    -      -       -      +
    148B  TYR*     3.1    24.5    +      -       -      +
    161B  ALA      3.1    17.3    +      -       -      +
    162B  CYS      4.0     2.9    -      -       -      +
    164B  VAL*     1.3    73.4    -      -       -      +
    166B  LEU*     1.3    62.9    +      -       -      +
    168B  ALA*     3.1     1.7    +      -       -      +
    169B  LEU*     2.8    39.8    +      -       +      +
    198B  VAL*     3.6    32.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 166 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  ILE*     4.1    22.2    -      -       +      -
    196A  MET*     3.6    32.8    -      -       +      -
    129B  LEU*     4.1    29.2    -      -       +      -
    132B  MET*     5.9     0.7    -      -       +      -
    134B  PHE*     3.8    37.5    -      -       +      -
    136B  LEU*     4.2     6.7    -      -       +      -
    144B  ILE*     4.4     4.3    -      -       +      -
    162B  CYS*     2.9    25.9    +      -       -      +
    163B  CYS*     3.7     7.6    -      -       -      +
    165B  LYS*     1.3    75.5    -      -       -      +
    167B  ARG*     1.3    57.8    +      -       -      +
    169B  LEU*     4.8     1.6    -      -       -      -
    170B  THR*     2.7    35.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 167 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  MET*     4.3    21.0    -      -       +      -
    101B  VAL*     3.6    31.3    -      -       -      +
    105B  TRP*     3.7    26.9    -      -       +      +
    132B  MET*     5.9     0.8    -      -       -      +
    134B  PHE*     4.9     5.7    -      -       +      -
    163B  CYS      3.1    18.7    +      -       -      +
    164B  VAL*     3.6     6.7    -      -       -      +
    165B  LYS      3.1     0.2    -      -       -      -
    166B  LEU*     1.3    77.9    -      -       -      +
    168B  ALA*     1.3    62.2    +      -       -      +
    170B  THR*     4.0     3.1    -      -       -      -
    171B  ASP*     3.0    43.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 168 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164B  VAL*     3.1    17.4    +      -       +      +
    165B  LYS*     3.7     5.2    -      -       -      +
    167B  ARG*     1.3    78.6    -      -       -      +
    169B  LEU*     1.3    57.4    +      -       -      +
    171B  ASP*     3.2     8.3    +      -       -      +
    172B  SER*     3.0    30.9    +      -       -      -
    198B  VAL*     4.1    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 169 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  PHE*     3.8    27.0    -      -       +      -
    192A  ILE*     4.4     8.1    -      -       +      -
    195A  VAL*     3.3    37.9    -      -       +      +
    196A  MET*     3.7    23.1    -      -       +      -
    165B  LYS*     2.8    30.4    +      -       +      +
    166B  LEU      4.2     2.0    -      -       -      +
    168B  ALA*     1.3    72.1    -      -       -      +
    170B  THR*     1.3    56.6    +      -       -      +
    172B  SER*     3.3     5.1    +      -       -      -
    173B  PHE*     3.0    28.4    +      -       -      +
    194B  CYS*     4.7     4.9    -      -       -      +
    195B  VAL*     4.6    15.0    -      -       +      -
    198B  VAL*     3.9    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  TYR*     2.7    40.3    +      -       +      +
    192A  ILE*     4.1     4.2    -      -       -      +
    134B  PHE*     3.6    14.7    -      -       +      -
    166B  LEU*     2.7    23.6    +      -       -      -
    167B  ARG*     4.1     4.0    -      -       -      -
    169B  LEU*     1.3    73.5    -      -       -      +
    171B  ASP*     1.3    67.5    +      -       -      +
    173B  PHE*     3.4     0.7    +      -       -      +
    174B  ARG*     3.1    54.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167B  ARG*     3.0    40.9    +      -       -      +
    168B  ALA*     3.2     7.0    +      -       -      +
    170B  THR*     1.3    80.7    -      -       -      +
    172B  SER*     1.3    57.6    +      -       -      +
    174B  ARG*     4.1     7.5    -      -       -      +
    175B  ARG*     3.0    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  PHE*     5.4     0.2    -      -       -      -
    168B  ALA      3.0    13.7    +      -       -      -
    169B  LEU*     3.6    10.3    -      -       -      +
    170B  THR      3.2     0.2    -      -       -      -
    171B  ASP*     1.3    75.5    -      -       -      +
    173B  PHE*     1.3    64.7    +      -       -      +
    175B  ARG*     3.5    12.7    +      -       -      +
    176B  ARG*     2.9    35.1    +      -       -      +
    186B  PHE*     5.4     0.4    -      -       -      -
    194B  CYS*     3.5    33.9    +      -       -      -
    198B  VAL*     5.9     1.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186A  PHE*     3.3    22.2    -      -       +      -
    187A  PRO      4.1     0.7    -      -       -      -
    188A  TYR*     3.4    44.0    -      +       +      -
    191A  PHE*     4.0    30.7    -      +       +      -
    169B  LEU      3.0    16.3    +      -       -      +
    170B  THR      3.9     3.8    -      -       -      +
    171B  ASP      3.3     0.2    -      -       -      -
    172B  SER*     1.3    73.8    -      -       -      +
    174B  ARG*     1.3    75.6    +      -       +      +
    176B  ARG*     2.9    13.7    +      -       -      -
    177B  ASP*     3.2    14.1    +      -       -      -
    182B  GLY*     3.1    37.5    -      -       -      -
    184B  VAL*     3.4    36.1    -      -       +      +
    186B  PHE*     4.5     7.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with ARG 174 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  TYR*     5.7     3.4    +      -       +      -
    134B  PHE*     6.0     2.8    -      -       -      -
    170B  THR*     3.1    39.8    +      -       +      +
    171B  ASP*     4.1     7.8    +      -       -      +
    173B  PHE*     1.3    86.4    -      -       +      +
    175B  ARG*     1.3    63.3    +      -       -      +
    177B  ASP*     2.9    23.3    +      -       -      +
    180B  GLN*     4.8     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 175 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171B  ASP      3.0    20.1    +      -       -      +
    172B  SER*     3.5    11.7    +      -       -      +
    173B  PHE      3.2     0.2    -      -       -      -
    174B  ARG*     1.3    76.7    -      -       -      +
    176B  ARG*     1.3   102.2    +      -       -      +
    177B  ASP      3.9     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 176 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172B  SER*     2.9    36.0    +      -       -      +
    173B  PHE      2.9     8.7    +      -       -      +
    175B  ARG*     1.3   118.2    -      -       -      +
    177B  ASP*     1.3    57.6    +      -       -      +
    178B  THR*     2.8    18.9    +      -       -      -
    184B  VAL*     3.6    22.4    -      -       +      +
    185B  ASN      5.4     1.6    +      -       -      -
    186B  PHE*     3.3    30.5    -      -       -      -
    190B  ASP*     2.8    39.0    +      -       -      -
    193B  GLN*     6.1     0.4    -      -       -      +
    194B  CYS*     3.6    21.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 177 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173B  PHE*     3.2     8.9    +      -       +      +
    174B  ARG*     2.9    19.1    +      -       -      +
    175B  ARG      3.6     0.4    -      -       -      -
    176B  ARG*     1.3    72.5    -      -       -      +
    178B  THR*     1.3    60.6    +      -       -      +
    179B  ALA*     3.8     1.7    +      -       -      -
    180B  GLN*     2.7    51.9    +      -       -      +
    181B  GLN      3.5     5.4    +      -       -      -
    182B  GLY*     2.7    33.8    +      -       -      -
    183B  VAL      3.2    20.1    -      -       -      +
    184B  VAL*     3.9    11.2    -      -       +      -
----------------------------------------------------------
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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