Contacts of the helix formed by residues 212 - 233 (chain G) in PDB entry 2QC8


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 ILE 212 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114G  ARG*     3.8    39.0    -      -       +      +
    117G  CYS*     3.6    23.3    -      -       +      +
    118G  LYS*     3.4    51.6    -      -       +      +
    121G  MET*     3.5    12.1    -      -       +      +
    210G  GLU      3.3     1.2    +      -       -      +
    211G  GLY*     1.3    71.8    -      -       -      -
    213G  SER*     1.3    64.8    +      -       -      +
    214G  MET      3.0     6.2    +      -       -      -
    215G  GLY*     3.2    12.0    +      -       -      +
    216G  ASP*     3.3    11.4    +      -       -      +
    349G  PHE*     3.9     9.4    -      -       +      -
    352G  THR*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 213 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209G  CYS*     3.6     7.3    -      -       -      +
    210G  GLU*     2.7    30.6    +      -       -      +
    211G  GLY      3.1     0.2    -      -       -      -
    212G  ILE*     1.3    81.1    -      -       -      +
    214G  MET*     1.3    63.5    +      -       -      +
    215G  GLY      3.4     0.2    -      -       -      -
    216G  ASP*     3.8    13.7    -      -       -      -
    217G  HIS*     3.1    39.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 214 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131G  PHE*     3.4    51.1    -      -       +      +
    133G  MET*     3.6    37.9    -      -       +      -
    206G  ILE*     3.3    39.0    -      -       +      +
    209G  CYS*     3.5    12.7    -      -       +      +
    211G  GLY      3.0    15.2    +      -       -      +
    213G  SER*     1.3    79.7    +      -       -      +
    215G  GLY*     1.3    57.5    +      -       -      +
    217G  HIS*     3.8     0.3    -      -       -      -
    218G  LEU*     2.9    36.0    +      -       +      +
    352G  THR*     3.8     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 215 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    211G  GLY      4.5     0.2    +      -       -      -
    212G  ILE      3.2     3.8    +      -       -      -
    214G  MET*     1.3    76.3    -      -       -      +
    216G  ASP*     1.3    65.8    +      -       -      +
    219G  TRP*     3.0    30.7    +      -       -      -
    348G  PRO*     3.8    24.7    -      -       -      -
    349G  PHE*     3.6    23.2    -      -       -      -
    352G  THR*     5.2     2.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 216 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82G  ALA      4.9     0.3    -      -       -      +
     83G  ALA*     3.6    27.7    -      -       +      +
     85G  PHE*     4.7     0.7    -      -       +      -
     98G  LEU*     3.8    10.4    -      -       +      +
    114G  ARG*     2.7    45.4    +      -       -      -
    212G  ILE*     3.3    11.7    +      -       -      +
    213G  SER*     4.1    13.8    -      -       -      -
    214G  MET      3.3     0.6    -      -       -      -
    215G  GLY*     1.3    77.7    -      -       -      +
    217G  HIS*     1.3    69.4    +      -       +      +
    219G  TRP*     4.0     1.2    -      -       -      +
    220G  VAL*     3.1    29.2    +      -       -      +
    349G  PHE*     3.4     8.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 217 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85G  PHE*     3.8    24.3    -      +       -      -
    187G  GLY      3.4    17.3    -      -       -      -
    188G  VAL*     3.5    10.2    -      -       +      +
    189G  LYS*     2.9    42.0    +      -       +      +
    206G  ILE*     3.8    17.9    -      -       +      -
    209G  CYS*     4.1     6.3    -      -       -      -
    213G  SER*     3.1    37.1    +      -       -      +
    214G  MET      3.9     0.4    -      -       -      +
    216G  ASP*     1.3    81.7    -      -       +      +
    218G  LEU*     1.3    58.4    +      -       -      +
    220G  VAL*     3.3     1.2    +      -       -      +
    221G  ALA*     2.8    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 218 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133G  MET*     3.5    38.1    -      -       +      +
    135G  GLN*     4.0    30.1    -      -       +      +
    204G  PHE*     4.0     6.1    -      -       +      -
    206G  ILE*     4.0    22.8    -      -       +      +
    214G  MET*     2.9    25.7    +      -       +      +
    217G  HIS*     1.3    75.9    -      -       -      +
    219G  TRP*     1.3    56.5    +      -       -      +
    221G  ALA*     3.2     5.8    -      -       -      +
    222G  ARG*     2.8    40.8    +      -       -      +
    252G  CYS*     4.1    10.8    -      -       -      -
    348G  PRO*     3.8    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 219 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33G  ILE*     3.3    26.3    -      -       +      +
     37G  GLY      3.7    18.4    -      -       -      -
     38G  GLU*     3.9    21.5    -      -       -      -
     40G  LEU*     3.8    35.5    -      -       +      +
     98G  LEU*     4.3    17.3    -      -       +      -
    215G  GLY      3.0    27.5    +      -       -      +
    216G  ASP      4.0     2.0    -      -       -      +
    218G  LEU*     1.3    76.0    -      -       -      +
    220G  VAL*     1.3    59.1    +      -       -      +
    222G  ARG*     3.0    36.1    +      -       -      +
    223G  PHE*     2.8    27.8    +      -       -      +
    238G  PHE*     6.0     1.3    -      +       -      -
    345G  ASN      5.8     1.3    -      -       -      -
    346G  CYS      4.9     0.4    -      -       -      -
    347G  ASP*     3.2    39.0    +      -       -      -
    348G  PRO*     3.4    13.5    -      -       +      +
    349G  PHE*     3.4    21.7    -      +       -      -
----------------------------------------------------------
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Residues in contact with VAL 220 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31G  ILE*     4.9    10.8    -      -       +      -
     85G  PHE*     3.5    38.4    -      -       +      -
     96G  LEU*     4.4    14.1    -      -       +      -
     98G  LEU*     3.8    26.9    -      -       +      +
    188G  VAL*     4.0    13.5    -      -       +      -
    216G  ASP      3.1    18.8    +      -       -      +
    217G  HIS      3.9     1.8    -      -       -      +
    219G  TRP*     1.3    74.7    -      -       -      +
    221G  ALA*     1.3    57.3    +      -       -      +
    223G  PHE*     3.0     6.7    +      -       +      +
    224G  ILE*     2.8    40.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 221 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179G  HIS*     2.8    26.7    +      -       -      -
    183G  CYS*     4.4    11.4    -      -       -      -
    188G  VAL*     4.0     7.2    -      -       +      +
    204G  PHE*     3.7    26.9    -      -       +      -
    206G  ILE*     3.8    15.9    -      -       +      -
    217G  HIS      2.8    18.2    +      -       -      +
    218G  LEU*     3.2    11.2    -      -       -      +
    220G  VAL*     1.3    72.4    -      -       -      +
    222G  ARG*     1.3    56.3    +      -       -      +
    224G  ILE*     3.4     1.1    +      -       -      +
    225G  LEU*     3.0    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 222 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40G  LEU*     4.1     7.6    -      -       +      -
    135G  GLN*     3.0    29.8    +      -       +      +
    204G  PHE*     4.9     1.8    -      -       +      -
    218G  LEU*     2.8    31.4    +      -       +      +
    219G  TRP*     3.2    49.4    -      -       -      +
    221G  ALA*     1.3    71.0    -      -       -      +
    223G  PHE*     1.3    66.9    +      -       -      +
    225G  LEU*     3.3     4.6    +      -       -      +
    226G  HIS*     3.1    31.0    +      -       -      -
    238G  PHE*     3.5    36.2    -      -       +      -
    344G  ALA      3.1    16.8    +      -       -      -
    345G  ASN      4.8     2.1    +      -       -      -
    346G  CYS*     2.8    39.2    +      -       -      +
    348G  PRO*     3.6     9.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 223 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29G  MET*     3.7    17.0    -      -       -      -
     31G  ILE*     3.6    43.7    -      -       +      -
     40G  LEU*     3.8    21.0    -      -       +      +
     41G  ARG      4.6     2.0    -      -       -      -
     42G  CYS*     3.7    39.0    -      -       +      -
     89G  PHE*     4.5     3.1    -      +       -      -
     96G  LEU*     4.4    15.5    -      -       +      -
    219G  TRP      2.8    15.8    +      -       -      +
    220G  VAL*     3.0     8.0    +      -       -      +
    222G  ARG*     1.3    72.7    -      -       -      +
    224G  ILE*     1.3    68.7    +      -       -      +
    226G  HIS*     3.2     7.1    +      -       -      +
    227G  ARG*     3.0    43.4    +      -       +      +
    165H  VAL*     4.0    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 224 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88G  PRO*     4.5     1.6    -      -       +      -
     89G  PHE*     3.6    19.0    -      -       +      -
     96G  LEU*     4.1    21.1    -      -       +      -
    179G  HIS*     3.6    13.9    -      -       +      +
    182G  ALA*     3.4    32.8    -      -       +      +
    183G  CYS*     4.1     9.4    -      -       -      -
    186G  ALA*     3.9    28.9    -      -       +      -
    188G  VAL*     4.1     9.9    -      -       +      -
    220G  VAL*     2.8    28.7    +      -       +      +
    221G  ALA      3.6     4.3    -      -       -      +
    223G  PHE*     1.3    78.7    -      -       +      +
    225G  LEU*     1.3    56.1    +      -       -      +
    227G  ARG      3.5     0.2    +      -       -      -
    228G  VAL*     2.9    35.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 225 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137G  TYR*     3.7    44.2    -      -       +      +
    175G  ILE*     3.8    26.9    -      -       +      -
    179G  HIS*     3.4    29.5    -      -       +      +
    204G  PHE*     4.1     7.9    -      -       +      -
    221G  ALA      3.0    11.7    +      -       -      +
    222G  ARG*     3.7     6.1    -      -       -      +
    223G  PHE      3.2     0.2    -      -       -      -
    224G  ILE*     1.3    73.9    -      -       -      +
    226G  HIS*     1.3    59.7    +      -       -      +
    228G  VAL*     3.3     2.3    +      -       +      -
    229G  CYS*     2.8    37.4    +      -       -      +
    236G  ALA*     3.7    17.3    -      -       +      -
    238G  PHE*     3.8    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 226 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38G  GLU      5.8     1.6    +      -       -      -
     40G  LEU*     4.3    15.6    -      -       +      +
    222G  ARG      3.1    24.0    +      -       -      -
    223G  PHE      3.7     5.2    -      -       -      +
    225G  LEU*     1.3    74.7    -      -       -      +
    227G  ARG*     1.3    52.4    +      -       -      +
    229G  CYS*     3.2     6.3    +      -       -      +
    230G  GLU*     2.7    34.3    +      -       -      +
    235G  ILE*     6.1     0.2    -      -       -      +
    236G  ALA*     3.2    41.4    +      -       +      +
    238G  PHE*     3.6    26.3    -      +       -      -
    165H  VAL*     4.0    32.7    +      -       +      +
    166H  GLY*     4.4     7.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 227 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14G  LYS*     3.9    19.8    -      -       -      +
     29G  MET*     5.5     6.3    -      -       -      +
     89G  PHE*     3.2    56.4    -      -       +      +
    223G  PHE*     3.0    32.0    +      -       +      +
    226G  HIS*     1.3    74.7    -      -       -      +
    228G  VAL*     1.3    66.8    +      -       -      +
    230G  GLU*     3.1    20.1    +      -       -      +
    231G  ASP*     2.9    32.8    +      -       -      -
    165H  VAL*     3.7    21.1    -      -       +      +
    173H  ARG*     3.6    38.7    -      -       -      +
    177H  GLU*     4.8     7.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 228 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17F  TYR*     3.7    33.2    -      -       +      -
     89G  PHE*     3.7     6.0    -      -       +      -
    175G  ILE*     3.8    19.1    -      -       +      +
    178G  ALA*     3.8    23.8    -      -       +      -
    179G  HIS*     4.2     9.2    -      -       +      +
    182G  ALA*     4.1     6.1    -      -       +      -
    224G  ILE*     2.9    35.9    +      -       +      +
    225G  LEU*     3.7     5.4    -      -       -      +
    227G  ARG*     1.3    75.5    -      -       -      +
    229G  CYS*     1.3    62.5    +      -       -      +
    231G  ASP*     3.0    12.3    +      -       -      +
    232G  PHE*     3.2    26.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 229 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139G  LEU*     3.7    19.1    -      -       -      -
    175G  ILE*     3.7    26.2    -      -       -      -
    225G  LEU*     2.8    25.3    +      -       -      +
    226G  HIS*     3.5     7.4    -      -       -      +
    228G  VAL*     1.3    78.4    -      -       -      +
    230G  GLU*     1.3    63.7    +      -       -      +
    232G  PHE*     2.9    13.2    +      -       -      +
    233G  GLY      3.0    10.2    +      -       -      -
    234G  VAL*     3.1    33.7    +      -       +      +
    235G  ILE*     4.7     0.2    -      -       -      -
    236G  ALA*     3.8    21.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 230 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11G  LYS*     4.4     4.4    +      -       -      -
    226G  HIS      2.7    13.3    +      -       -      +
    227G  ARG*     3.1    19.2    +      -       -      +
    229G  CYS*     1.3    76.9    -      -       -      +
    231G  ASP*     1.3    60.0    -      -       -      +
    233G  GLY*     3.2    12.1    +      -       -      -
    234G  VAL      4.1     0.6    +      -       -      -
    165H  VAL*     3.7     4.3    -      -       -      +
    166H  GLY      3.0    35.0    +      -       -      +
    167H  ALA*     3.9    17.2    -      -       -      +
    170H  ALA*     3.5    14.1    -      -       -      +
    173H  ARG*     2.7    56.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 231 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13F  ILE*     3.2    36.1    -      -       +      +
     17F  TYR*     2.3    34.5    +      -       -      +
     11G  LYS*     3.4    31.4    +      -       -      +
     14G  LYS*     4.3    12.7    +      -       -      -
     89G  PHE*     4.6     0.2    -      -       -      -
    227G  ARG*     2.9    33.8    +      -       -      -
    228G  VAL      3.0     8.7    +      -       -      +
    230G  GLU*     1.3    76.2    -      -       -      +
    232G  PHE*     1.3    61.3    +      -       +      +
    233G  GLY      3.3     1.0    +      -       -      -
    174H  ASP*     4.7     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 232 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10F  ASN      3.4    43.4    +      -       -      +
     13F  ILE*     4.0    17.7    -      -       +      -
     14F  LYS*     3.8    23.1    -      -       -      -
     17F  TYR*     4.7     1.8    -      +       -      -
    174G  ASP*     3.7    28.9    -      -       +      -
    175G  ILE*     3.9    23.6    -      -       +      -
    178G  ALA*     4.0     8.5    -      -       +      -
    228G  VAL*     3.2    38.2    +      -       +      -
    229G  CYS      2.9     7.3    +      -       -      +
    231G  ASP*     1.3    76.0    -      -       -      +
    233G  GLY*     1.3    62.7    +      -       -      +
    234G  VAL*     3.3    20.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 233 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141G  GLY*     5.3     0.3    -      -       -      -
    142G  THR*     4.4    17.7    +      -       -      +
    229G  CYS      3.0     3.9    +      -       -      -
    230G  GLU      3.2     7.9    +      -       -      -
    231G  ASP      3.2     6.5    +      -       -      -
    232G  PHE*     1.3    78.9    -      -       -      +
    234G  VAL*     1.3    61.7    +      -       -      +
    167H  ALA*     4.0    13.0    -      -       -      +
----------------------------------------------------------
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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