Contacts of the helix formed by residues 213 - 233 (chain B) in PDB entry 1UW9


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 ARG 213 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  GLU*     5.4     0.4    -      -       -      +
    110A  GLU*     2.8    42.8    +      -       -      -
    208B  SER*     3.5    14.3    +      -       -      +
    209B  GLN*     3.4    29.2    +      -       -      +
    210B  PRO*     3.6    22.1    +      -       -      +
    212B  MET*     1.3    75.4    -      -       -      +
    214B  TRP*     1.3    68.5    +      -       +      +
    215B  ARG*     3.4     3.1    -      -       +      +
    216B  ASP*     3.4    24.5    +      -       -      +
    217B  ARG*     3.2    18.8    +      -       -      +
    149E  VAL      5.3     5.3    +      -       -      -
    152E  PRO      5.6     0.4    -      -       -      +
    285E  ARG*     3.7    46.7    -      -       -      +
    372E  PRO*     6.0     6.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 214 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  ASN      3.4    18.4    -      -       -      +
    208B  SER*     3.0    27.8    +      -       -      -
    212B  MET      3.9     0.4    +      -       -      -
    213B  ARG*     1.3    73.3    -      -       +      +
    215B  ARG*     1.3    92.2    +      -       +      +
    217B  ARG*     3.1    19.6    +      -       -      +
    218B  PHE*     2.9    48.5    +      +       +      -
    249B  GLU*     3.9     5.3    +      -       -      -
    252B  LYS*     3.8    31.8    -      -       +      +
    253B  ARG*     3.5    51.8    -      -       +      +
    256B  SMC      3.5    39.0    -      -       +      -
    286E  ASP*     5.3    10.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 215 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  ARG*     3.4     2.3    -      -       +      +
    214B  TRP*     1.3   113.9    -      -       +      +
    216B  ASP*     1.3    65.0    +      -       -      +
    218B  PHE*     3.3     2.1    +      -       -      +
    219B  LEU*     3.1    52.0    +      -       -      +
    256B  SMC      3.8    20.9    -      -       -      +
    161E  LYS*     5.0     2.5    -      -       -      +
    258E  LYS*     4.6     2.8    -      -       -      +
    285E  ARG*     3.8    15.5    -      -       -      +
    286E  ASP*     3.1    32.3    +      -       -      +
    287E  ASN*     3.5    21.0    +      -       -      +
    288E  GLY*     3.6    19.2    -      -       -      +
     63F  VAL*     3.8    37.0    +      -       -      +
     65F  CYS*     4.9     2.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 216 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  ALA*     3.6    18.8    -      -       +      -
    213B  ARG*     3.4    25.8    +      -       -      +
    215B  ARG*     1.3    79.4    -      -       -      +
    217B  ARG*     1.3    62.1    +      -       -      +
    219B  LEU*     3.3     4.3    +      -       -      +
    220B  PHE*     3.1    28.3    +      -       +      -
    152E  PRO      5.0     3.3    -      -       -      +
    153E  HIS*     3.5    12.7    +      -       -      -
    157E  VAL*     3.4    32.8    -      -       +      +
    161E  LYS*     3.0    32.6    +      -       -      +
    285E  ARG*     6.0     1.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 217 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  ALA*     3.5    11.1    -      -       -      +
    185B  TYR*     3.7    14.4    -      -       +      -
    202B  ASP*     2.8    41.7    +      -       -      -
    206B  VAL*     3.4    20.7    +      -       -      +
    207B  ASN*     2.7    32.9    +      -       -      +
    209B  GLN*     5.5     0.2    +      -       -      -
    212B  MET*     3.6    37.9    +      -       -      +
    213B  ARG      3.2     3.5    +      -       -      +
    214B  TRP*     3.1    18.7    +      -       -      +
    216B  ASP*     1.3    78.7    -      -       -      +
    218B  PHE*     1.3    76.4    +      -       -      +
    220B  PHE*     3.3     1.4    +      -       -      +
    221B  VAL*     2.8    47.8    +      -       +      +
    240B  LEU*     4.6     2.2    -      -       +      +
    241B  ASN      4.1     4.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 218 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214B  TRP*     2.9    53.1    +      +       +      -
    215B  ARG      3.3     8.7    +      -       -      +
    217B  ARG*     1.3    97.0    -      -       -      +
    219B  LEU*     1.3    53.9    +      -       -      +
    221B  VAL*     4.0     1.2    -      -       -      +
    222B  THR*     2.8    38.3    +      -       -      -
    240B  LEU*     3.6    48.0    -      -       +      +
    241B  ASN      3.4    21.3    -      -       -      -
    242B  ALA*     4.9     0.4    -      -       -      -
    253B  ARG*     3.3    29.4    -      -       +      -
    256B  SMC      3.8    14.8    -      -       +      -
    257B  ALA*     4.3     7.2    -      -       +      -
    260B  LEU*     4.1    12.3    -      -       +      -
    265B  ILE*     5.4     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 219 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215B  ARG*     3.1    45.6    +      -       -      +
    216B  ASP*     3.6     9.4    -      -       -      +
    217B  ARG      3.1     0.2    -      -       -      -
    218B  PHE*     1.3    75.7    -      -       -      +
    220B  PHE*     1.3    69.0    +      -       +      +
    222B  THR*     3.2     7.5    +      -       -      -
    223B  GLU*     3.1    17.8    +      -       -      +
    256B  SMC      4.7     2.0    -      -       +      -
    260B  LEU*     4.3    22.7    -      -       +      -
    161E  LYS*     4.6    16.4    -      -       +      +
     63F  VAL      4.7     3.6    -      -       -      +
     65F  CYS      3.5    24.0    -      -       -      +
     66F  LEU      3.7    19.1    -      -       -      +
     67F  TYR*     4.0    23.7    -      -       +      +
     71F  ARG*     5.1     2.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 220 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  ALA*     3.6    19.3    -      -       +      +
    183B  LYS*     3.5    31.9    -      -       +      -
    186B  GLY*     4.2     2.2    -      -       -      -
    216B  ASP*     3.1    26.6    +      -       +      +
    217B  ARG      4.0     1.1    -      -       -      +
    219B  LEU*     1.3    77.0    -      -       +      +
    221B  VAL*     1.3    62.9    +      -       -      +
    223B  GLU*     3.2     8.1    +      -       -      +
    224B  ALA*     3.0    17.7    +      -       -      +
    157E  VAL*     5.2     3.6    -      -       +      -
    160E  ASP*     3.6    44.9    -      -       +      -
    161E  LYS*     3.7    23.1    -      -       +      -
     71F  ARG*     4.2    25.1    -      -       +      -
     72F  TYR*     3.4    36.7    -      +       -      +
----------------------------------------------------------
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Residues in contact with VAL 221 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185B  TYR*     4.2    16.6    -      -       +      -
    186B  GLY*     4.4     7.6    -      -       -      +
    189B  VAL*     4.2    13.5    -      -       +      -
    217B  ARG*     2.8    37.0    +      -       +      +
    218B  PHE      4.0     2.0    -      -       -      +
    220B  PHE*     1.3    75.8    -      -       -      +
    222B  THR*     1.3    58.4    +      -       -      +
    224B  ALA*     3.1     7.5    +      -       -      +
    225B  ILE*     2.8    33.9    +      -       +      +
    238B  HIS*     3.5    42.2    -      -       +      +
    240B  LEU*     3.8    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 222 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218B  PHE      2.8    24.6    +      -       -      -
    219B  LEU*     3.4     7.0    -      -       -      -
    220B  PHE      3.2     0.2    -      -       -      -
    221B  VAL*     1.3    76.2    -      -       -      +
    223B  GLU*     1.3    62.3    +      -       -      +
    225B  ILE*     3.3     9.9    +      -       -      +
    226B  TYR*     3.1    51.8    +      -       +      -
    240B  LEU*     4.7     2.3    -      -       -      +
    260B  LEU*     3.4    20.1    -      -       +      +
    262B  VAL*     3.5    19.2    -      -       +      +
     60F  PHE*     4.1    12.6    -      -       +      -
     67F  TYR*     4.1    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 223 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219B  LEU      3.1     9.6    +      -       -      +
    220B  PHE*     3.5    10.6    -      -       -      +
    222B  THR*     1.3    78.0    -      -       -      +
    224B  ALA*     1.3    56.6    +      -       -      +
    226B  TYR*     3.9     1.2    -      -       -      +
    227B  LYS*     3.0    32.7    +      -       +      +
     67F  TYR*     3.4    26.0    +      -       +      +
     68F  TYR      3.2    18.2    -      -       -      +
     69F  ASP*     4.3     7.0    -      -       -      +
     70F  ASN*     3.5     4.9    +      -       -      +
     71F  ARG*     2.9    45.1    +      -       -      +
     72F  TYR*     3.0    46.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186B  GLY      3.2    28.9    -      -       -      +
    189B  VAL*     3.7     8.7    -      -       +      -
    190B  TYR*     3.5    24.9    -      -       +      +
    193B  LEU*     4.6     1.3    -      -       -      -
    220B  PHE      3.0    11.9    +      -       -      +
    221B  VAL      3.4     8.1    -      -       -      +
    223B  GLU*     1.3    73.6    -      -       -      +
    225B  ILE*     1.3    65.5    +      -       -      +
    227B  LYS*     3.4     3.8    +      -       -      +
    228B  ALA*     3.0    26.0    +      -       -      +
     72F  TYR*     4.4     5.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  VAL*     4.9     0.2    -      -       +      -
    193B  LEU*     3.9    15.7    -      -       +      -
    221B  VAL*     2.8    30.0    +      -       +      +
    222B  THR*     3.3     4.0    +      -       -      +
    224B  ALA*     1.3    73.8    -      -       -      +
    226B  TYR*     1.3    76.3    +      -       +      +
    228B  ALA*     3.9     1.7    -      -       -      +
    229B  GLN*     2.9    30.4    +      -       -      +
    236B  LYS*     3.5    30.7    -      -       +      +
    237B  GLY*     4.4     1.1    -      -       -      -
    238B  HIS*     3.8    41.3    -      -       +      +
    240B  LEU*     5.3     1.6    -      -       +      -
    262B  VAL*     4.0    26.9    -      -       +      -
    263B  PRO*     4.7     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222B  THR*     3.1    37.1    +      -       +      +
    223B  GLU      4.2     1.8    -      -       -      +
    225B  ILE*     1.3    92.0    -      -       +      +
    227B  LYS*     1.3    65.6    +      -       -      +
    229B  GLN*     3.9    17.7    -      -       -      +
    230B  ALA*     3.0    25.6    +      -       -      +
    260B  LEU      2.7    24.0    +      -       -      -
    261B  GLY      3.2    11.7    +      -       -      -
    262B  VAL*     3.6     8.9    +      -       +      -
    263B  PRO*     5.7     0.9    -      -       +      -
     54C  ASN*     5.8     2.0    -      -       -      -
     68C  TYR*     5.4     3.6    -      +       -      -
     56F  SER*     3.5    34.5    -      -       -      +
     59F  ARG*     3.0    39.2    +      -       -      -
     60F  PHE*     4.1     8.7    -      +       -      -
     67F  TYR*     3.9     3.8    -      -       -      +
     69F  ASP*     4.7     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  TYR*     3.4    44.5    +      -       +      -
    223B  GLU*     3.0    23.0    +      -       +      +
    224B  ALA*     3.8     3.8    -      -       -      +
    226B  TYR*     1.3    76.6    -      -       -      +
    228B  ALA*     1.3    57.4    +      -       -      +
    230B  ALA*     3.3     6.1    +      -       -      +
    231B  GLU*     2.9    33.8    +      -       +      +
     45F  ALA*     5.7     1.8    -      -       -      +
     49F  LYS*     4.2    33.4    -      -       +      +
     69F  ASP*     5.7     0.8    +      -       -      -
     70F  ASN*     4.8     6.9    +      -       -      +
     72F  TYR*     3.4    40.4    +      -       +      +
     73F  TRP*     4.2     6.5    -      -       -      +
     74F  THR*     4.5     3.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  TYR*     3.9    15.4    -      -       +      +
    193B  LEU*     3.5    31.2    -      -       +      -
    194B  ARG*     3.8    15.0    -      -       -      +
    224B  ALA      3.0    16.8    +      -       -      +
    225B  ILE      3.9     2.0    -      -       -      +
    227B  LYS*     1.3    76.2    -      -       -      +
    229B  GLN*     1.3    58.6    +      -       -      +
    231B  GLU*     3.3     3.5    +      -       -      -
    232B  THR*     2.8    36.4    +      -       -      +
    236B  LYS*     4.1     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225B  ILE*     2.9    23.0    +      -       -      +
    226B  TYR*     3.9    15.6    -      -       +      +
    227B  LYS      3.3     0.2    -      -       -      -
    228B  ALA*     1.3    76.7    -      -       -      +
    230B  ALA*     1.3    57.2    +      -       -      +
    233B  GLY*     2.8    30.0    +      -       -      -
    234B  GLU      3.3    22.9    -      -       -      +
    235B  VAL*     3.4    13.4    -      -       -      +
    236B  LYS*     3.0    37.8    +      -       +      +
     52C  VAL*     3.5    25.9    -      -       +      +
     54C  ASN*     4.9     5.0    +      -       -      +
     68C  TYR*     3.6    22.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226B  TYR      3.0    17.9    +      -       -      +
    227B  LYS*     3.7     4.7    -      -       -      +
    229B  GLN*     1.3    77.4    -      -       -      +
    231B  GLU*     1.3    62.1    +      -       -      +
    233B  GLY*     4.0     1.4    +      -       -      -
     10C  LYS*     3.2    23.9    +      -       -      -
     49F  LYS*     4.3    22.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  TYR*     2.6    28.8    +      -       -      -
    194B  ARG*     2.9    44.6    +      -       -      +
    227B  LYS*     2.9    21.7    +      -       +      +
    228B  ALA*     3.6     5.6    -      -       -      +
    229B  GLN      3.3     0.2    -      -       -      -
    230B  ALA*     1.3    78.6    -      -       -      +
    232B  THR*     1.3    62.2    +      -       +      +
      4C  TRP*     5.2     0.5    -      -       -      -
      5C  THR      4.4     1.3    -      -       -      +
      6C  PRO*     3.4    38.6    -      -       +      +
      9C  ASN*     4.2     6.0    +      -       +      +
     10C  LYS*     4.0    23.3    +      -       -      +
     49F  LYS*     6.3     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194B  ARG*     3.5    36.1    -      -       +      +
    228B  ALA      2.8    20.8    +      -       -      +
    231B  GLU*     1.3    82.9    -      -       +      +
    233B  GLY*     1.3    64.2    +      -       -      +
    234B  GLU*     3.2    17.0    +      -       -      -
    236B  LYS*     3.3    22.2    -      -       -      +
      9C  ASN      4.7     3.4    -      -       -      +
     10C  LYS*     3.6     3.7    -      -       -      +
     11C  MET*     2.8    42.1    +      -       +      +
     17C  TYR*     4.8     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229B  GLN*     2.8    14.3    +      -       -      -
    230B  ALA*     4.0     2.9    +      -       -      -
    231B  GLU      3.6     1.8    -      -       -      -
    232B  THR*     1.3    77.3    -      -       -      +
    234B  GLU*     1.3    62.0    +      -       -      +
    235B  VAL      4.4     0.2    +      -       -      -
     10C  LYS*     4.1     6.5    -      -       -      +
     11C  MET      4.6     1.5    -      -       -      +
     12C  PHE*     5.9     0.2    -      -       -      -
     13C  GLU*     5.9     0.2    -      -       -      +
     51C  TYR*     3.9    33.5    -      -       -      -
     52C  VAL*     4.9    14.7    +      -       -      +
----------------------------------------------------------
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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