Contacts of the helix formed by residues 219 - 240 (chain A) in PDB entry 5M8L


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 ALA 219 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213A  PHE      4.6     5.4    -      -       -      +
    218A  PRO*     1.3    77.5    -      -       -      +
    220A  PHE*     1.3    57.3    +      -       -      +
    221A  LEU      3.4     0.7    -      -       -      -
    222A  THR*     3.6     3.4    -      -       -      -
    223A  TRP*     2.8    36.1    +      -       +      +
    425A  PHE*     3.9     2.6    -      -       +      -
    433A  GLY      3.9     5.4    -      -       -      +
    434A  HIS*     2.9    30.3    +      -       +      +
    440A  MET*     5.2     1.3    -      -       +      -
    449A  ASN*     3.2    33.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 220 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  SER      3.3    23.3    -      -       -      +
    215A  HIS*     4.1     6.3    -      +       -      -
    217A  GLY      3.2    14.8    +      -       -      +
    218A  PRO      3.1     2.2    -      -       -      -
    219A  ALA*     1.3    76.2    -      -       -      +
    221A  LEU*     1.3    90.3    +      -       +      +
    224A  HIS*     2.9    48.6    +      +       +      +
    356A  ARG*     3.9     5.6    -      -       -      -
    360A  GLU*     3.6    49.8    -      -       +      +
    377A  HIS*     3.5    48.7    -      +       -      -
    404A  HIS*     4.1     5.4    -      +       -      -
    407A  THR*     4.2     6.3    -      -       +      -
    434A  HIS*     4.1     1.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 221 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218A  PRO      4.2     2.6    +      -       -      -
    219A  ALA      3.4     0.4    -      -       -      -
    220A  PHE*     1.3   101.4    -      -       +      +
    222A  THR*     1.3    59.0    +      -       -      +
    224A  HIS*     3.9     3.0    -      -       +      +
    225A  ARG*     3.0    27.4    +      -       -      +
    342A  PHE*     3.7    30.7    -      -       +      -
    355A  PHE*     3.8     7.4    -      -       +      -
    356A  ARG*     4.1     9.0    -      -       +      -
    359A  VAL*     3.8    22.9    -      -       +      -
    407A  THR*     3.9    20.6    -      -       +      +
    408A  ASP*     4.5     1.9    -      -       -      +
    411A  PHE*     3.8    43.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 222 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218A  PRO      4.8     0.6    +      -       -      -
    219A  ALA*     3.4     8.5    +      -       -      -
    221A  LEU*     1.3    73.8    -      -       +      +
    223A  TRP*     1.3    64.3    +      -       -      +
    225A  ARG*     3.5     6.9    -      -       -      +
    226A  TYR      3.1    17.7    +      -       -      -
    342A  PHE*     5.5     0.7    -      -       +      -
    411A  PHE*     4.1     9.2    -      -       +      -
    425A  PHE*     4.1     5.8    -      -       +      -
    440A  MET*     3.5     9.7    -      -       -      +
    449A  ASN*     2.6    51.5    +      -       -      +
    452A  MET*     3.7    22.4    -      -       +      +
    453A  PHE*     4.0    25.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 223 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  THR      3.6    18.2    -      -       -      -
    192A  HIS*     3.5    37.2    -      +       -      -
    195A  SER*     3.7     6.6    -      -       -      -
    213A  PHE      3.9    10.3    -      -       -      -
    214A  SER*     3.4    25.3    -      -       -      -
    219A  ALA*     2.8    25.6    +      -       +      +
    220A  PHE      4.0     2.0    -      -       -      +
    222A  THR*     1.3    73.5    +      -       -      +
    224A  HIS*     1.3    76.9    +      +       -      +
    226A  TYR*     3.2     5.2    +      -       -      +
    227A  HIS*     3.0    50.6    +      +       +      +
    440A  MET*     3.6    25.9    -      -       +      -
    441A  VAL      2.6    26.9    +      -       -      -
    443A  PHE*     3.4    29.3    -      +       -      -
----------------------------------------------------------
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Residues in contact with HIS 224 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  HIS*     3.2     3.0    +      -       -      -
    214A  SER      3.3    16.1    +      -       -      -
    215A  HIS*     3.3    14.1    -      +       -      -
    220A  PHE*     2.9    35.5    +      +       +      +
    221A  LEU*     4.3     3.6    -      -       +      +
    223A  TRP*     1.3    98.4    -      +       -      +
    225A  ARG*     1.3    61.6    +      -       -      +
    227A  HIS*     3.4     5.0    -      -       -      +
    228A  LEU*     3.1    29.9    +      -       +      +
    400A  PHE*     3.9    10.8    -      +       -      -
    404A  HIS*     3.0    38.6    -      +       +      +
    407A  THR*     6.4     0.7    -      -       +      -
    408A  ASP*     5.9     0.7    -      -       -      -
    512A   ZN      2.1    34.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 225 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  ARG*     5.5     0.9    +      -       -      -
    221A  LEU      3.0    19.8    +      -       -      +
    222A  THR      3.5     5.8    -      -       -      +
    223A  TRP      3.2     0.2    -      -       -      -
    224A  HIS*     1.3    74.9    -      -       -      +
    226A  TYR*     1.3    67.4    +      -       -      +
    228A  LEU*     3.3     5.7    +      -       -      +
    229A  LEU*     3.0    21.7    +      -       +      +
    408A  ASP*     2.8    36.7    +      -       -      +
    411A  PHE*     3.6    20.0    -      -       -      -
    412A  ASP*     3.0    37.9    +      -       -      +
    415A  LEU*     3.6     4.2    -      -       -      +
    452A  MET*     3.2    35.1    +      -       -      -
    454A  VAL      2.7    29.5    +      -       -      -
    456A  ALA*     4.3     0.8    -      -       -      +
    460A  LEU*     3.7    17.0    -      -       +      +
    462A  TYR*     3.3    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 226 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222A  THR      3.1     4.2    +      -       -      +
    223A  TRP      3.2     4.2    +      -       -      +
    225A  ARG*     1.3    79.0    -      -       -      +
    227A  HIS*     1.3    53.6    +      -       -      +
    229A  LEU*     3.0    13.0    +      -       +      +
    230A  ARG*     2.8    64.9    +      -       +      -
    440A  MET*     3.7    24.2    -      -       +      -
    443A  PHE*     3.3    42.2    -      +       +      -
    444A  TRP      4.1    11.5    +      -       -      -
    445A  PRO*     4.9     4.2    +      -       -      +
    447A  VAL*     4.1    23.0    -      -       +      +
    452A  MET*     3.9    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 227 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  PHE*     2.9    73.5    +      +       -      -
    191A  THR*     3.7    17.8    +      -       -      -
    192A  HIS*     4.0     6.5    -      -       +      -
    223A  TRP*     3.0    41.9    +      +       +      +
    224A  HIS*     3.4    14.0    +      -       -      +
    226A  TYR*     1.3    77.6    -      -       -      +
    228A  LEU*     1.3    63.2    +      -       -      +
    230A  ARG*     3.5     3.9    +      -       +      +
    231A  LEU      3.3    14.9    +      -       -      -
    395A  PRO*     4.6     0.4    -      -       +      -
    400A  PHE*     3.4    26.4    -      +       -      -
    404A  HIS*     6.0     0.2    -      -       -      -
    443A  PHE*     3.9    11.9    -      +       +      -
----------------------------------------------------------
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Residues in contact with LEU 228 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  ARG*     4.3    11.7    -      -       -      +
    188A  PHE*     4.5    13.7    -      -       +      -
    224A  HIS*     3.1    17.7    +      -       +      +
    225A  ARG*     3.7     3.4    -      -       -      +
    226A  TYR      3.3     0.2    -      -       -      -
    227A  HIS*     1.3    77.2    -      -       +      +
    229A  LEU*     1.3    67.6    +      -       -      +
    231A  LEU*     3.1     2.6    +      -       -      -
    232A  GLU*     2.9    20.1    +      -       -      +
    246A  LEU*     3.6    21.6    -      -       +      +
    400A  PHE*     5.5     0.4    -      -       +      -
    401A  VAL*     3.7    29.2    -      -       +      +
    404A  HIS*     3.3    40.8    -      -       +      +
    405A  THR*     3.6    17.5    -      -       +      +
    408A  ASP*     4.1    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 229 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  PRO*     4.2    27.4    -      -       +      -
    130A  ARG*     3.8    11.0    -      -       -      +
    225A  ARG*     3.0    12.7    +      -       +      +
    226A  TYR*     3.0    16.0    +      -       +      +
    228A  LEU*     1.3    75.5    -      -       -      +
    230A  ARG*     1.3    62.4    +      -       -      +
    232A  GLU*     3.5     8.7    +      -       -      +
    233A  LYS*     3.1    24.7    +      -       +      +
    452A  MET*     4.2    27.4    -      -       +      -
    460A  LEU*     4.4    17.0    -      -       +      +
    462A  TYR*     3.8    29.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 230 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  HIS*     5.1     0.4    -      -       -      -
    158A  LEU*     5.0     8.3    -      -       -      +
    159A  PHE*     3.8    33.6    -      -       -      -
    187A  TYR*     3.9    26.5    -      -       +      +
    188A  PHE*     6.3     0.2    -      -       +      -
    226A  TYR*     2.8    50.2    +      -       +      +
    227A  HIS*     3.7     6.7    -      -       +      +
    229A  LEU*     1.3    78.1    -      -       -      +
    231A  LEU*     1.3    57.4    +      -       -      +
    233A  LYS*     3.5    26.6    +      -       -      +
    234A  ASP*     3.0    56.6    +      -       -      +
    237A  GLU*     5.4     3.0    +      -       -      -
    443A  PHE*     5.3     3.4    -      -       +      -
    444A  TRP      4.1     5.8    +      -       -      -
    445A  PRO*     5.3     3.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 231 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  LEU*     5.1     1.1    -      -       +      -
    151A  ALA*     5.2     0.2    -      -       +      -
    184A  ILE*     4.2    17.9    -      -       +      +
    185A  TYR*     4.2    20.0    -      -       +      -
    188A  PHE*     3.7    38.1    -      -       +      -
    227A  HIS      3.3     3.0    +      -       -      +
    228A  LEU      3.1     6.8    +      -       -      +
    230A  ARG*     1.3    77.6    -      -       -      +
    232A  GLU*     1.3    60.5    +      -       -      +
    234A  ASP*     3.3     5.0    +      -       -      +
    235A  MET*     2.9    55.9    +      -       +      +
    246A  LEU*     4.4     5.4    -      -       +      -
    401A  VAL*     3.9    35.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 232 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  ILE*     3.2    25.8    -      -       -      +
    130A  ARG*     2.9    36.3    +      -       -      +
    228A  LEU      2.9    17.1    +      -       -      +
    229A  LEU*     3.8    13.6    -      -       +      +
    231A  LEU*     1.3    74.9    -      -       -      +
    233A  LYS*     1.3    57.2    +      -       -      +
    235A  MET*     3.3     3.2    +      -       -      +
    236A  GLN*     2.9    47.2    +      -       -      +
    244A  PHE*     3.9     8.1    -      -       +      +
    245A  SER*     3.4     3.5    -      -       -      -
    246A  LEU*     2.8    44.7    +      -       +      +
    462A  TYR*     4.6     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 233 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  THR*     2.6    41.5    +      -       -      +
    113A  CYS*     4.4     8.9    +      -       -      +
    229A  LEU*     3.1    18.4    +      -       +      +
    230A  ARG*     3.7    28.3    -      -       -      +
    231A  LEU      3.2     0.2    -      -       -      -
    232A  GLU*     1.3    77.6    -      -       -      +
    234A  ASP*     1.3    62.1    +      -       -      +
    236A  GLN*     3.3    19.3    +      -       -      +
    237A  GLU*     3.1    43.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 234 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156A  HIS*     2.7    37.1    +      -       -      +
    157A  PRO*     5.7     1.0    -      -       +      +
    184A  ILE*     3.8    23.8    -      -       +      +
    187A  TYR*     4.3     3.8    -      -       -      -
    230A  ARG*     3.0    55.7    +      -       -      +
    231A  LEU*     3.7     6.7    -      -       -      +
    233A  LYS*     1.3    74.9    -      -       -      +
    235A  MET*     1.3    57.9    +      -       -      +
    237A  GLU*     3.4    10.4    +      -       -      +
    238A  MET*     2.8    28.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 235 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  PHE*     5.0     0.7    -      -       +      -
    147A  ALA*     3.8    33.9    -      -       +      +
    148A  LEU*     3.8    19.5    -      -       +      +
    151A  ALA*     4.3    13.9    -      -       +      -
    184A  ILE*     4.6     2.7    -      -       +      -
    231A  LEU*     2.9    48.8    +      -       +      +
    232A  GLU      3.8     0.4    -      -       -      +
    234A  ASP*     1.3    76.2    -      -       -      +
    236A  GLN*     1.3    59.4    +      -       -      +
    238A  MET*     4.0     9.2    -      -       +      -
    239A  LEU*     2.8    38.2    +      -       +      +
    244A  PHE*     3.4    38.6    -      -       +      -
    246A  LEU*     4.2     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 236 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  ILE*     3.6    13.1    -      -       -      +
    232A  GLU*     2.9    35.3    +      -       -      +
    233A  LYS*     3.5    22.1    -      -       +      +
    235A  MET*     1.3    76.5    -      -       -      +
    237A  GLU*     1.3    57.6    +      -       +      +
    240A  GLN*     2.9    22.9    +      -       -      -
    241A  GLU      2.9    33.6    +      -       -      +
    242A  PRO*     3.5    19.4    +      -       +      +
    244A  PHE*     3.0    32.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 237 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  THR*     4.5     4.7    +      -       -      -
    157A  PRO*     5.2    10.9    -      -       +      +
    230A  ARG*     5.4     2.5    +      -       -      -
    233A  LYS*     3.1    49.9    +      -       +      +
    234A  ASP*     3.8    10.3    -      -       -      +
    236A  GLN*     1.3    74.2    -      -       +      +
    238A  MET*     1.3    67.4    +      -       -      +
    240A  GLN*     3.3    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 238 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147A  ALA      3.5    22.4    -      -       -      +
    150A  MET*     3.7    37.2    -      -       +      +
    151A  ALA*     3.5    30.3    -      -       -      +
    154A  THR*     4.1     7.4    -      -       +      -
    184A  ILE*     3.7    20.9    -      -       +      -
    234A  ASP      2.8    19.1    +      -       -      +
    235A  MET*     3.6    15.7    -      -       +      +
    237A  GLU*     1.3    77.8    -      -       -      +
    239A  LEU*     1.3    88.8    +      -       +      +
    240A  GLN*     3.6     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 239 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  HIS*     4.3    13.0    -      -       +      +
    147A  ALA*     3.9    20.0    -      -       +      -
    150A  MET*     4.5    11.0    -      -       -      -
    235A  MET      2.8    24.2    +      -       -      +
    238A  MET*     1.3    90.1    -      -       +      +
    240A  GLN*     1.3    69.2    +      -       -      +
    241A  GLU*     3.3    34.2    +      -       +      +
    244A  PHE*     3.5    43.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 240 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  GLN      2.9     8.9    +      -       -      -
    237A  GLU*     3.3    15.4    +      -       -      +
    238A  MET      4.5     3.4    -      -       -      +
    239A  LEU*     1.3    79.8    -      -       -      +
    241A  GLU*     1.3    59.5    +      -       -      +
    242A  PRO*     3.6    11.3    -      -       -      +
----------------------------------------------------------
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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