Contacts of the helix formed by residues 222 - 243 (chain L) in PDB entry 2AAZ


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 LEU 222 (chain L).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69L  LYS*     4.5     9.5    +      -       -      +
    219L  ASP*     3.1    12.5    +      -       -      +
    221L  GLY*     1.3    79.7    -      -       -      +
    223L  GLY*     1.3    66.0    +      -       -      +
    225L  PRO*     3.6     8.2    -      -       -      +
    226L  PHE*     3.8    18.9    -      -       -      +
    262L  HIS*     3.8    13.2    -      -       +      -
    311L  ILE      5.6     1.6    -      -       -      +
    313L  MET*     3.6    38.8    -      -       +      +
    314L  LYS      3.8     5.2    -      -       -      +
    315L  MET*     3.6    39.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 223 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219L  ASP*     2.8    19.9    +      -       -      +
    222L  LEU*     1.3    73.1    -      -       -      +
    224L  VAL*     1.3    64.4    +      -       -      -
    226L  PHE*     2.8    19.7    +      -       -      +
    227L  ASN*     3.0    19.5    +      -       -      +
    500L  UMP      3.8    19.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 224 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  TYR*     3.9    15.0    -      -       +      -
    215L  GLN*     4.5     4.5    -      -       -      +
    218L  CYS*     3.8    22.7    -      -       +      -
    219L  ASP      3.0     4.6    +      -       -      +
    220L  LEU*     3.5    33.9    -      -       +      +
    223L  GLY*     1.3    69.0    -      -       -      -
    225L  PRO*     1.3    72.4    -      -       +      +
    227L  ASN*     3.6     9.1    +      -       -      -
    228L  ILE*     2.9    47.7    +      -       +      +
    251L  LEU*     4.5     2.7    -      -       +      -
    253L  MET*     4.2    19.5    -      -       +      -
    500L  UMP      4.4     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 225 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  TYR*     3.6    19.1    -      -       -      +
     64L  PRO      5.4     0.7    -      -       -      +
     65L  LEU*     5.4     0.7    -      -       -      +
     66L  LEU*     3.8    31.8    +      -       +      +
     69L  LYS*     4.0    18.2    -      -       -      +
     71L  VAL*     4.6    14.2    -      -       +      +
    220L  LEU      3.3    14.4    -      -       -      +
    221L  GLY      3.6     9.6    -      -       -      +
    222L  LEU      3.6    10.1    -      -       -      +
    223L  GLY      3.3     4.7    -      -       -      -
    224L  VAL*     1.3    91.0    -      -       +      +
    226L  PHE*     1.3    64.9    +      -       +      +
    228L  ILE*     4.1     3.4    -      -       +      +
    229L  ALA*     3.5    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 226 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69L  LYS*     6.5     0.7    -      -       -      -
     71L  VAL*     4.3    16.6    -      -       +      -
     72L  PHE*     3.9    29.8    -      +       +      -
     75L  GLY      3.9     5.6    -      -       -      -
     76L  VAL*     3.5    40.6    -      -       +      +
     79L  GLU*     4.2    16.4    -      -       -      +
    100L  ILE*     4.0    30.7    -      -       +      -
    222L  LEU      3.8    15.0    -      -       -      +
    223L  GLY*     2.8    11.3    +      -       -      +
    225L  PRO*     1.3    81.6    -      -       +      +
    227L  ASN*     1.3    57.3    +      -       -      +
    229L  ALA*     3.3     2.4    +      -       -      +
    230L  SER*     2.7    38.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 227 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188L  HIS*     3.4    20.6    +      -       -      +
    213L  MET*     4.1     9.6    -      -       +      -
    215L  GLN*     2.9    29.8    +      -       -      +
    223L  GLY      3.0    19.1    +      -       -      +
    224L  VAL*     3.7     6.7    -      -       -      +
    226L  PHE*     1.3    76.7    -      -       -      +
    228L  ILE*     1.3    62.0    +      -       -      +
    230L  SER*     4.2     5.0    -      -       -      -
    231L  TYR*     3.1    31.5    +      -       -      +
    249L  PHE*     4.5     0.7    -      -       -      -
    251L  LEU*     5.0     2.5    -      -       +      -
    500L  UMP      2.8    43.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 228 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  TYR*     4.7     7.2    -      -       +      -
     54L  PHE*     4.3     9.9    -      -       +      -
     56L  PHE*     3.8    39.7    -      -       +      -
     64L  PRO*     3.6    28.7    -      -       +      +
     66L  LEU*     4.7    12.6    -      -       +      -
    224L  VAL*     2.9    38.2    +      -       +      +
    225L  PRO*     4.1     4.0    -      -       +      +
    227L  ASN*     1.3    76.3    -      -       -      +
    229L  ALA*     1.3    63.1    +      -       -      +
    231L  TYR      3.7     0.2    +      -       -      -
    232L  ALA*     3.1    22.3    +      -       -      +
    249L  PHE*     3.8    13.6    -      -       +      -
    251L  LEU*     3.7    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 229 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63L  LEU*     4.7     6.7    -      -       +      -
     64L  PRO      4.4     9.6    +      -       -      +
     65L  LEU*     3.9    27.8    -      -       +      -
     73L  LEU*     5.8     0.4    -      -       +      -
     76L  VAL*     4.0    15.7    -      -       +      -
    225L  PRO      3.5    14.2    +      -       -      +
    226L  PHE      3.3     3.2    +      -       -      +
    228L  ILE*     1.3    77.4    -      -       -      +
    230L  SER*     1.3    61.6    +      -       -      +
    232L  ALA*     3.3     6.7    +      -       -      +
    233L  LEU*     2.9    37.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 230 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76L  VAL*     3.6    15.2    +      -       -      +
     79L  GLU*     4.7     7.7    +      -       -      -
     80L  LEU*     3.6    26.3    -      -       -      +
     83L  PHE*     4.4    13.5    -      -       -      -
    131L  TRP*     6.0     0.3    -      -       -      -
    226L  PHE      2.7    24.7    +      -       -      -
    227L  ASN*     3.6     7.9    -      -       -      -
    229L  ALA*     1.3    72.9    -      -       -      +
    231L  TYR*     1.3    65.3    +      -       -      +
    233L  LEU*     3.1     6.9    +      -       -      +
    234L  LEU*     2.9    25.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 231 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83L  PHE*     6.1     0.2    -      +       -      -
    131L  TRP*     3.4    19.3    +      +       -      -
    171L  LEU      5.6     0.3    +      -       -      -
    188L  HIS*     2.6    54.6    +      +       +      +
    190L  PHE*     5.1     4.2    +      -       -      -
    191L  CYS*     3.7    29.6    -      -       +      +
    211L  CYS*     4.2     6.1    -      -       -      -
    213L  MET*     3.7    31.7    -      -       +      +
    227L  ASN*     3.1    17.9    +      -       -      +
    230L  SER*     1.3    84.5    -      -       -      +
    232L  ALA*     1.3    64.3    +      -       -      +
    234L  LEU*     3.7    22.9    -      -       +      +
    235L  THR*     2.8    29.8    +      -       -      -
    249L  PHE*     3.5    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 232 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58L  LEU*     3.9    16.7    -      -       +      +
     63L  LEU*     4.0     6.5    -      -       +      -
     64L  PRO*     3.6    33.4    -      -       +      -
    228L  ILE      3.1    19.3    +      -       -      +
    229L  ALA      3.6     4.7    -      -       -      +
    230L  SER      3.2     0.2    -      -       -      -
    231L  TYR*     1.3    76.4    -      -       -      +
    233L  LEU*     1.3    62.1    +      -       -      +
    235L  THR*     3.3     4.9    +      -       -      -
    236L  HIS*     3.0    29.6    +      -       -      -
    249L  PHE*     4.8     6.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 233 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63L  LEU*     3.7    29.6    -      -       +      -
     73L  LEU*     4.7     8.1    -      -       +      -
     76L  VAL*     3.9    22.9    -      -       +      -
     77L  ILE*     4.0    22.9    -      -       +      +
     80L  LEU*     3.6    17.0    -      -       +      -
    229L  ALA*     2.9    26.0    +      -       +      +
    230L  SER      3.4     4.0    -      -       -      +
    232L  ALA*     1.3    74.9    -      -       -      +
    234L  LEU*     1.3    59.4    +      -       -      +
    236L  HIS*     3.1     6.4    +      -       -      +
    237L  MET*     2.8    32.4    +      -       -      +
    280L  LEU*     4.0    14.8    -      -       +      -
    300L  PHE*     4.0    23.1    -      -       +      -
    302L  VAL*     5.6     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 234 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80L  LEU*     3.6    21.5    -      -       +      +
     84L  VAL*     4.6    15.0    -      -       +      -
    131L  TRP*     4.0    17.5    -      -       +      -
    153L  LEU*     4.7     8.3    -      -       +      -
    171L  LEU*     3.9    25.4    -      -       +      -
    193L  PHE*     4.3     8.5    -      -       +      -
    230L  SER      2.9    16.4    +      -       -      +
    231L  TYR*     3.7    25.4    -      -       +      +
    232L  ALA      3.3     0.2    -      -       -      -
    233L  LEU*     1.3    75.6    -      -       -      +
    235L  THR*     1.3    57.6    +      -       -      +
    237L  MET*     3.2    10.9    +      -       +      +
    238L  ILE*     2.9    53.4    +      -       +      +
    292L  ILE*     5.0     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 235 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58L  LEU*     3.7    23.8    -      -       +      +
    193L  PHE*     4.0     8.9    -      -       +      -
    209L  LEU*     3.7    33.1    -      -       +      +
    210L  SER      4.9     0.4    -      -       -      -
    211L  CYS*     3.3    31.3    -      -       +      +
    231L  TYR      2.8    18.7    +      -       -      -
    232L  ALA      3.5     5.2    -      -       -      -
    233L  LEU      3.2     0.2    -      -       -      -
    234L  LEU*     1.3    75.1    -      -       -      +
    236L  HIS*     1.3    59.0    +      -       -      +
    238L  ILE*     3.5     1.1    +      -       -      -
    239L  ALA*     2.9    27.9    +      -       -      +
    246L  PRO*     4.5     5.2    -      -       +      -
    249L  PHE*     5.1     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 236 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58L  LEU*     3.8    19.5    -      -       +      +
     61L  ASN*     4.2    15.6    +      -       -      -
     62L  THR      3.0    28.2    +      -       -      -
     63L  LEU*     4.6     6.9    -      -       +      -
    232L  ALA      3.0    31.3    +      -       -      -
    233L  LEU*     3.1     8.0    +      -       -      +
    235L  THR*     1.3    75.0    -      -       -      +
    237L  MET*     1.3    63.3    +      -       -      +
    239L  ALA*     3.3     6.5    +      -       -      +
    240L  LEU*     3.1    18.5    +      -       -      +
    246L  PRO*     3.6    28.6    -      -       +      +
    280L  LEU*     3.5    33.8    -      -       +      +
    282L  TRP*     3.8    13.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with MET 237 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80L  LEU*     3.5    32.8    -      -       -      -
     81L  LEU*     3.7    17.9    -      -       +      -
     84L  VAL*     4.3    13.2    -      -       +      -
    233L  LEU      2.8    13.8    +      -       -      +
    234L  LEU*     3.4    11.0    -      -       +      +
    236L  HIS*     1.3    75.7    -      -       -      +
    238L  ILE*     1.3    63.8    +      -       -      +
    240L  LEU*     3.1    13.7    +      -       -      +
    241L  ILE*     3.2    16.5    +      -       -      +
    282L  TRP*     3.8    18.8    -      -       +      -
    292L  ILE*     4.1    20.6    -      -       +      +
    295L  PHE*     3.6    42.2    -      -       +      -
    300L  PHE*     3.8    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 238 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153L  LEU*     4.3    11.9    -      -       +      -
    156L  VAL*     4.6     4.3    -      -       +      -
    157L  ILE*     3.6    28.0    -      -       +      -
    160L  ILE*     3.6    27.4    -      -       +      -
    193L  PHE*     3.4    38.8    -      -       +      -
    209L  LEU*     3.9     9.0    -      -       +      -
    234L  LEU*     2.9    36.0    +      -       +      +
    235L  THR      3.9     3.4    -      -       -      +
    237L  MET*     1.3    75.7    -      -       -      +
    239L  ALA*     1.3    55.4    +      -       -      +
    241L  ILE*     3.3     1.9    +      -       -      +
    242L  THR*     2.7    35.3    +      -       +      +
    292L  ILE*     4.2     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 239 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209L  LEU*     4.0     5.2    -      -       +      -
    235L  THR      2.9    18.4    +      -       -      +
    236L  HIS      3.4     6.5    -      -       -      +
    237L  MET      3.2     0.2    -      -       -      -
    238L  ILE*     1.3    77.8    -      -       -      +
    240L  LEU*     1.3    56.5    +      -       -      +
    242L  THR      3.4     0.2    +      -       -      -
    243L  ASP*     3.0    10.4    +      -       -      -
    244L  THR*     2.9    55.4    +      -       -      +
    246L  PRO*     3.7    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 240 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236L  HIS      3.1    12.0    +      -       -      +
    237L  MET      3.1     8.7    +      -       -      +
    239L  ALA*     1.3    78.8    -      -       -      +
    241L  ILE*     1.3    63.3    +      -       +      +
    242L  THR      3.5     0.2    +      -       -      -
    243L  ASP*     3.6     6.3    +      -       -      +
    282L  TRP*     3.6    39.9    -      -       +      +
    284L  ARG      5.8     0.4    -      -       -      +
    285L  SER*     5.1     0.4    -      -       -      -
    286L  LYS*     3.5    45.5    -      -       +      +
    289L  ILE*     3.6    31.4    -      -       +      -
    295L  PHE*     3.9     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 241 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157L  ILE*     4.0    26.9    -      -       +      -
    161L  LYS*     4.0    13.6    +      -       +      +
    237L  MET      3.2    15.0    +      -       -      +
    238L  ILE      3.9     6.1    -      -       -      +
    240L  LEU*     1.3    80.5    -      -       +      +
    242L  THR*     1.3    58.7    +      -       -      +
    243L  ASP      3.4     0.2    -      -       -      -
    286L  LYS*     3.6    23.9    +      -       +      +
    289L  ILE*     4.3     6.1    -      -       +      -
    290L  GLY      4.0    10.8    -      -       -      +
    291L  ASP*     3.6    38.1    -      -       +      +
    292L  ILE*     3.9    13.0    -      -       +      +
    295L  PHE*     3.7    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 242 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157L  ILE*     3.8    35.9    -      -       +      +
    160L  ILE*     3.7    23.3    -      -       +      +
    161L  LYS*     3.8    20.8    -      -       +      +
    238L  ILE*     2.7    33.0    +      -       +      +
    241L  ILE*     1.3    78.5    -      -       -      +
    243L  ASP*     1.3    71.0    +      -       -      +
    244L  THR*     2.8    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 243 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206L  LYS*     3.9    29.9    +      -       +      +
    207L  PRO*     3.9     6.8    -      -       -      +
    239L  ALA      3.0     6.5    +      -       -      -
    240L  LEU      3.6     2.7    +      -       -      +
    241L  ILE      3.4     0.8    -      -       -      -
    242L  THR*     1.3    80.2    -      -       -      +
    244L  THR*     1.3    61.2    +      -       -      +
    286L  LYS*     2.7    43.9    +      -       -      +
----------------------------------------------------------
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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