Contacts of the helix formed by residues 213 - 233 (chain E) 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 E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208E  SER*     3.5    14.2    +      -       -      +
    209E  GLN*     3.4    29.2    +      -       -      +
    210E  PRO*     3.5    20.9    +      -       -      +
    212E  MET*     1.3    75.0    -      -       -      +
    214E  TRP*     1.3    67.8    +      -       +      +
    215E  ARG*     3.3     3.4    +      -       +      +
    216E  ASP*     3.3    24.2    +      -       -      +
    217E  ARG*     3.2    18.4    +      -       -      +
    146H  LYS*     5.1     0.2    -      -       -      +
    149H  VAL      5.3     5.6    +      -       -      -
    152H  PRO      5.6     0.7    -      -       -      +
    285H  ARG*     3.6    45.4    -      -       -      +
    372H  PRO*     6.0     3.8    -      -       -      +
    109K  GLU*     5.4     0.8    -      -       -      +
    110K  GLU*     2.8    43.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 214 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207E  ASN      3.5    18.6    -      -       -      +
    208E  SER*     3.0    27.8    +      -       -      -
    212E  MET      3.9     0.4    +      -       -      -
    213E  ARG*     1.3    72.9    -      -       +      +
    215E  ARG*     1.3    92.8    +      -       +      +
    217E  ARG*     3.1    20.1    +      -       -      +
    218E  PHE*     2.8    50.2    +      +       +      -
    241E  ASN      5.5     0.2    -      -       -      +
    249E  GLU*     3.9     8.3    +      -       -      -
    252E  LYS*     3.8    28.2    -      -       +      +
    253E  ARG*     3.5    50.0    -      -       +      +
    256E  SMC      3.6    40.6    -      -       +      -
    285H  ARG*     6.4     0.2    -      -       -      +
    286H  ASP*     5.2    11.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 215 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213E  ARG*     3.4     2.5    -      -       +      +
    214E  TRP*     1.3   111.4    -      -       +      +
    216E  ASP*     1.3    67.2    +      -       -      +
    218E  PHE*     3.4     2.3    +      -       -      +
    219E  LEU*     3.1    47.7    +      -       +      +
    256E  SMC      3.8    29.2    -      -       -      +
    161H  LYS*     5.0     2.9    -      -       -      +
    258H  LYS*     4.6     3.2    -      -       -      +
    285H  ARG*     3.7    22.2    -      -       -      +
    286H  ASP*     3.0    26.2    +      -       -      +
    287H  ASN*     3.4    20.8    +      -       -      +
    288H  GLY*     3.5    20.0    -      -       -      +
     63J  VAL*     3.8    27.1    +      -       -      +
     65J  CYS*     4.9     2.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 216 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182E  ALA*     3.6    19.5    -      -       +      -
    213E  ARG*     3.3    25.4    +      -       -      +
    214E  TRP      3.3     0.2    -      -       -      -
    215E  ARG*     1.3    78.5    -      -       -      +
    217E  ARG*     1.3    61.9    +      -       -      +
    219E  LEU*     3.3     3.6    +      -       -      +
    220E  PHE*     3.1    29.4    +      -       +      -
    152H  PRO      4.9     3.9    -      -       -      +
    153H  HIS*     3.4    12.3    +      -       -      -
    157H  VAL*     3.5    31.9    -      -       +      +
    161H  LYS*     3.0    32.9    +      -       -      +
    285H  ARG*     6.1     1.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 217 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182E  ALA*     3.6    10.2    -      -       -      +
    185E  TYR*     3.7    13.2    -      -       +      -
    202E  ASP*     2.7    40.2    +      -       -      -
    206E  VAL*     3.4    20.6    +      -       -      +
    207E  ASN*     2.7    33.7    +      -       -      +
    212E  MET*     3.6    39.8    +      -       -      +
    213E  ARG      3.2     3.8    +      -       -      +
    214E  TRP*     3.1    18.4    +      -       -      +
    216E  ASP*     1.3    77.5    -      -       -      +
    218E  PHE*     1.3    84.1    +      -       -      +
    220E  PHE      3.8     0.2    -      -       -      -
    221E  VAL*     2.8    43.3    +      -       +      +
    240E  LEU*     4.6     2.0    -      -       +      +
    241E  ASN      4.1     4.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 218 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214E  TRP*     2.8    58.4    +      +       +      +
    215E  ARG*     3.7     6.1    -      -       -      +
    216E  ASP      3.4     0.2    -      -       -      -
    217E  ARG*     1.3    88.4    -      -       -      +
    219E  LEU*     1.3    53.8    +      -       -      +
    221E  VAL*     3.9     1.0    -      -       -      +
    222E  THR*     2.7    39.3    +      -       -      -
    240E  LEU*     3.6    48.7    -      -       +      +
    241E  ASN      3.4    27.4    -      -       -      -
    242E  ALA*     4.9     0.7    -      -       -      -
    253E  ARG*     3.3    28.0    -      -       +      -
    256E  SMC      3.8    21.1    -      -       -      -
    257E  ALA*     4.3     7.9    -      -       +      -
    260E  LEU*     4.1     5.2    -      -       +      -
    265E  ILE*     5.3     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 219 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215E  ARG*     3.1    44.4    +      -       -      +
    216E  ASP*     3.6     9.2    -      -       -      +
    218E  PHE*     1.3    78.0    -      -       -      +
    220E  PHE*     1.3    64.7    +      -       +      +
    222E  THR*     3.2     7.2    +      -       -      -
    223E  GLU*     3.1    18.2    +      -       -      +
    256E  SMC      4.5     2.9    -      -       +      -
    260E  LEU*     4.0    28.5    -      -       +      -
    161H  LYS*     4.9    13.9    -      -       -      +
     63J  VAL      4.7     3.6    -      -       -      +
     65J  CYS      3.5    24.9    -      -       -      +
     66J  LEU      3.9    17.0    -      -       -      +
     67J  TYR*     4.0    20.7    -      -       +      -
     71J  ARG*     5.1     2.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 220 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182E  ALA*     3.6    19.7    -      -       +      +
    183E  LYS*     3.5    30.5    -      -       +      -
    186E  GLY*     4.2     2.5    -      -       -      -
    216E  ASP*     3.1    26.6    +      -       +      +
    217E  ARG      4.1     0.9    -      -       -      +
    219E  LEU*     1.3    75.1    -      -       +      +
    221E  VAL*     1.3    65.6    +      -       -      +
    223E  GLU*     3.3     3.8    +      -       -      -
    224E  ALA*     3.1    18.4    +      -       -      +
    157H  VAL*     5.1     4.0    -      -       +      -
    160H  ASP*     3.6    44.9    -      -       +      -
    161H  LYS*     3.7    24.2    -      -       +      -
     71J  ARG*     4.3    24.2    -      -       +      -
     72J  TYR*     3.3    41.2    -      +       -      +
----------------------------------------------------------
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Residues in contact with VAL 221 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185E  TYR*     4.2    15.9    -      -       +      -
    186E  GLY*     4.4     7.0    -      -       -      +
    189E  VAL*     4.2    12.8    -      -       +      -
    217E  ARG*     2.8    36.4    +      -       +      +
    218E  PHE      3.9     2.2    -      -       -      +
    220E  PHE*     1.3    76.0    -      -       -      +
    222E  THR*     1.3    58.8    +      -       -      +
    224E  ALA*     3.1     8.7    +      -       -      +
    225E  ILE*     2.8    35.4    +      -       +      +
    238E  HIS*     3.5    40.6    -      -       +      +
    240E  LEU*     3.8    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 222 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218E  PHE      2.7    24.0    +      -       -      -
    219E  LEU*     3.2     8.3    +      -       -      -
    221E  VAL*     1.3    76.5    -      -       -      +
    223E  GLU*     1.3    62.8    +      -       -      +
    225E  ILE*     3.3    10.3    +      -       -      +
    226E  TYR*     3.1    51.6    +      -       +      -
    240E  LEU*     4.8     3.3    -      -       -      +
    260E  LEU*     3.4    19.2    -      -       +      +
    262E  VAL*     3.5    17.3    -      -       +      +
     60J  PHE*     4.1    12.1    -      -       +      -
     67J  TYR*     4.1    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 223 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219E  LEU      3.1    10.1    +      -       -      +
    220E  PHE*     3.3    10.9    +      -       -      +
    222E  THR*     1.3    75.5    -      -       -      +
    224E  ALA*     1.3    57.6    +      -       -      +
    226E  TYR*     3.5     1.6    +      -       -      +
    227E  LYS*     3.0    31.5    +      -       +      +
     67J  TYR*     3.4    24.9    +      -       +      +
     68J  TYR      3.2    17.9    -      -       -      +
     69J  ASP*     4.4     6.1    -      -       -      +
     70J  ASN      3.6     4.8    +      -       -      +
     71J  ARG*     2.9    45.1    +      -       -      +
     72J  TYR*     2.9    46.7    +      -       +      +
   1141J  EDO      5.3     0.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 224 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186E  GLY      3.2    27.8    -      -       -      +
    189E  VAL*     3.8     8.7    -      -       +      -
    190E  TYR*     3.6    23.4    -      -       +      +
    193E  LEU*     4.4     2.2    -      -       -      +
    220E  PHE      3.1    10.4    +      -       -      +
    221E  VAL      3.1    10.1    +      -       -      +
    223E  GLU*     1.3    73.4    -      -       -      +
    225E  ILE*     1.3    65.1    +      -       -      +
    227E  LYS*     3.4     3.3    +      -       -      +
    228E  ALA*     3.0    26.2    +      -       -      +
     72J  TYR*     4.4     5.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 225 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189E  VAL*     4.9     0.4    -      -       +      -
    193E  LEU*     3.9    13.9    -      -       +      +
    221E  VAL*     2.8    30.1    +      -       +      +
    222E  THR*     3.3     5.1    +      -       -      +
    224E  ALA*     1.3    73.5    -      -       -      +
    226E  TYR*     1.3    75.1    +      -       +      +
    228E  ALA*     3.4     2.1    +      -       -      +
    229E  GLN*     2.9    30.4    +      -       -      +
    236E  LYS*     3.5    30.2    -      -       +      +
    237E  GLY*     4.3     1.1    -      -       -      -
    238E  HIS*     3.7    42.0    -      -       +      +
    240E  LEU*     5.3     1.1    -      -       +      -
    262E  VAL*     4.0    28.0    -      -       +      -
    263E  PRO*     4.7     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 226 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222E  THR*     3.1    37.4    +      -       +      +
    223E  GLU      4.1     1.8    -      -       -      +
    225E  ILE*     1.3    90.9    -      -       +      +
    227E  LYS*     1.3    66.3    +      -       -      +
    229E  GLN*     3.9    18.0    -      -       -      +
    230E  ALA*     3.1    18.4    +      -       -      +
    260E  LEU      2.7    23.8    +      -       -      -
    261E  GLY      3.2    12.5    -      -       -      -
    262E  VAL*     3.6     8.2    +      -       +      -
    263E  PRO*     5.7     0.7    -      -       +      -
     54F  ASN*     5.8     2.0    -      -       -      -
     68F  TYR*     5.4     3.6    -      +       -      -
     56J  SER*     3.6    34.8    -      -       -      +
     59J  ARG*     3.0    39.3    +      -       -      -
     60J  PHE*     4.0     9.2    -      +       -      -
     67J  TYR*     3.8     3.6    -      -       -      +
     69J  ASP*     4.7     0.2    -      -       -      +
   1141J  EDO      3.4    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 227 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190E  TYR*     3.5    45.6    +      -       +      -
    223E  GLU*     3.0    23.1    +      -       +      +
    224E  ALA*     3.8     4.9    -      -       -      +
    226E  TYR*     1.3    76.8    -      -       -      +
    228E  ALA*     1.3    55.9    +      -       -      +
    230E  ALA*     3.3     3.6    +      -       -      +
    231E  GLU*     3.0    34.0    +      -       -      +
     49J  LYS*     4.1    31.7    +      -       -      +
     70J  ASN*     4.8     5.8    +      -       -      +
     72J  TYR*     3.3    40.0    +      -       +      +
     73J  TRP*     4.3     6.7    -      -       -      +
     74J  THR*     4.5     2.9    +      -       -      -
   1141J  EDO      3.7    20.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 228 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190E  TYR*     3.9    12.5    -      -       +      -
    193E  LEU*     3.5    31.2    -      -       +      -
    194E  ARG*     3.8    14.4    -      -       -      +
    224E  ALA      3.0    17.4    +      -       -      +
    225E  ILE      3.9     2.7    -      -       -      +
    227E  LYS*     1.3    74.8    -      -       -      +
    229E  GLN*     1.3    58.1    +      -       -      +
    231E  GLU*     3.7     4.9    -      -       -      +
    232E  THR*     2.8    36.8    +      -       -      +
    236E  LYS*     4.1     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 229 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225E  ILE*     2.9    21.6    +      -       -      +
    226E  TYR*     3.9    16.7    -      -       -      +
    228E  ALA*     1.3    76.3    -      -       -      +
    230E  ALA*     1.3    57.1    +      -       -      +
    233E  GLY*     2.8    30.3    +      -       -      -
    234E  GLU      3.2    22.7    -      -       -      +
    235E  VAL*     3.4    14.0    -      -       -      +
    236E  LYS*     3.0    37.0    +      -       +      +
     52F  VAL*     3.4    26.0    -      -       +      +
     54F  ASN*     4.9     4.5    +      -       -      +
     68F  TYR*     3.5    23.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 230 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226E  TYR      3.1    18.2    +      -       -      +
    227E  LYS      3.8     3.1    -      -       -      +
    229E  GLN*     1.3    78.6    -      -       -      +
    231E  GLU*     1.3    62.4    +      -       -      +
    233E  GLY*     4.0     1.0    +      -       -      -
     10F  LYS*     3.2    25.5    +      -       -      -
     49J  LYS*     4.3    10.5    -      -       -      +
   1141J  EDO      3.8    23.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 231 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190E  TYR*     2.6    29.3    +      -       -      -
    194E  ARG*     2.9    44.2    +      -       -      +
    227E  LYS*     3.0    20.7    +      -       +      +
    228E  ALA*     3.7     5.2    -      -       -      +
    229E  GLN      3.3     0.2    -      -       -      -
    230E  ALA*     1.3    79.9    -      -       -      +
    232E  THR*     1.3    62.7    +      -       +      +
      4F  TRP*     5.2     0.5    -      -       -      -
      5F  THR      4.3     1.3    -      -       -      +
      6F  PRO*     3.3    35.6    -      -       +      +
      9F  ASN*     4.2     7.0    +      -       +      +
     10F  LYS*     3.9    23.1    +      -       -      +
     49J  LYS*     6.2     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 232 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194E  ARG*     3.5    35.7    -      -       +      +
    228E  ALA      2.8    21.0    +      -       -      +
    231E  GLU*     1.3    81.8    -      -       +      +
    233E  GLY*     1.3    62.6    +      -       -      +
    234E  GLU*     3.2    17.3    +      -       -      -
    236E  LYS*     3.2    22.8    -      -       -      +
      9F  ASN      4.7     3.8    -      -       -      +
     10F  LYS*     3.6     6.2    -      -       -      +
     11F  MET*     2.7    39.5    +      -       +      +
     17F  TYR*     4.8     6.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 233 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229E  GLN*     2.8    15.6    +      -       -      -
    230E  ALA      4.0     2.3    +      -       -      -
    231E  GLU      3.6     1.4    -      -       -      -
    232E  THR*     1.3    77.5    -      -       -      +
    234E  GLU*     1.3    60.4    +      -       -      +
     10F  LYS*     4.1     5.8    -      -       -      +
     11F  MET      4.7     2.7    -      -       -      +
     12F  PHE*     6.0     0.2    -      -       -      -
     13F  GLU*     5.9     0.3    -      -       -      +
     51F  TYR*     3.9    32.2    -      -       -      -
     52F  VAL*     4.8    15.8    +      -       -      +
----------------------------------------------------------
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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