Contacts of the helix formed by residues 292 - 313 (chain H) in PDB entry 3DBL


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 VAL 292 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16G  GLN*     4.0    18.6    -      -       +      +
     19G  LEU*     3.5    19.5    -      -       +      -
     20G  TRP*     4.0    20.4    -      -       +      -
     52G  PRO*     6.5     0.2    -      -       +      -
     89H  ASN*     4.8     2.9    -      -       -      +
     90H  ARG*     4.0     7.4    -      -       -      -
    184H  GLY      4.0     8.2    +      -       -      +
    185H  PHE*     3.9    12.6    -      -       +      -
    291H  ALA*     1.3    82.6    -      -       -      +
    293H  ALA*     1.3    68.5    +      -       -      +
    294H  SER*     3.6    19.3    -      -       -      +
    295H  THR*     3.6    19.8    -      -       -      +
    296H  ASN*     3.5    19.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 293 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16G  GLN*     5.9     0.2    +      -       -      -
     48G  ASN*     3.4    29.2    -      -       -      +
     51G  LEU*     4.1    20.0    -      -       +      -
     52G  PRO*     4.8     3.4    -      -       +      +
     62H  GLU*     4.5     3.9    -      -       -      +
     89H  ASN      4.0    16.7    +      -       -      +
     90H  ARG*     3.7    18.0    -      -       -      +
    292H  VAL*     1.3    74.3    -      -       -      +
    294H  SER*     1.3    59.0    +      -       -      +
    296H  ASN*     3.2     5.1    +      -       -      +
    297H  ALA*     2.9    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 294 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20G  TRP*     6.1     0.3    -      -       -      -
     48G  ASN*     3.6    18.0    +      -       -      +
    499G  GLY*     3.6    21.3    -      -       -      -
    502G  ALA*     4.8     0.9    -      -       -      -
    503G  GLN*     3.5    31.6    -      -       -      +
    506G  ILE*     5.8     1.7    -      -       -      +
    292H  VAL*     3.6    13.7    -      -       -      +
    293H  ALA*     1.3    75.8    -      -       -      +
    295H  THR*     1.3    66.4    +      -       -      +
    297H  ALA*     3.1     4.7    +      -       -      +
    298H  VAL*     3.0    28.4    +      -       -      +
    326H  ASP*     5.3     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 295 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182H  THR*     3.4    17.5    -      -       -      +
    184H  GLY      2.9    27.4    +      -       -      +
    185H  PHE*     3.5    24.4    +      -       -      +
    186H  LYS      3.7    15.9    -      -       -      +
    187H  GLY*     4.6     3.6    -      -       -      +
    292H  VAL*     3.6    12.9    +      -       -      +
    293H  ALA      3.5     0.8    -      -       -      -
    294H  SER*     1.3    78.0    +      -       -      +
    296H  ASN*     1.3    63.5    +      -       -      +
    298H  VAL*     3.2     8.1    +      -       -      +
    299H  ILE*     3.2    24.2    +      -       +      +
    324H  PHE*     4.9     7.1    -      -       +      -
    326H  ASP*     4.8     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 296 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58H  GLY*     4.1    22.4    -      -       -      +
     59H  LEU*     3.9    20.6    -      -       -      +
     62H  GLU*     4.5     3.1    -      -       -      +
     90H  ARG*     3.6    28.5    -      -       +      +
    182H  THR*     3.3    32.5    +      -       -      +
    291H  ALA*     4.9     1.2    -      -       -      +
    292H  VAL      3.5    16.5    +      -       -      +
    293H  ALA*     3.2     8.3    +      -       -      +
    295H  THR*     1.3    79.1    -      -       -      +
    297H  ALA*     1.3    62.5    +      -       -      +
    299H  ILE      3.6     0.2    +      -       -      -
    300H  ALA*     3.0    29.3    +      -       -      +
    176L  GLY*     3.7     9.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 297 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44G  GLU*     6.0     0.4    -      -       -      +
     48G  ASN*     3.9    22.2    -      -       -      +
    495G  ALA*     3.9    11.0    -      -       +      +
    499G  GLY*     4.1     6.5    -      -       -      -
     62H  GLU*     3.5    32.2    +      -       -      +
     66H  ASN*     4.8     0.2    +      -       -      -
    293H  ALA      2.9    12.4    +      -       -      +
    294H  SER      3.1     9.2    +      -       -      +
    296H  ASN*     1.3    76.4    -      -       -      +
    298H  VAL*     1.3    58.5    +      -       -      +
    300H  ALA*     3.9     1.0    -      -       -      +
    301H  ALA*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 298 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    496G  PHE*     3.6    32.7    -      -       +      +
    499G  GLY*     3.8     2.7    -      -       -      -
    500G  ALA*     3.6    26.5    -      -       -      +
    294H  SER      3.0    22.0    +      -       -      +
    295H  THR*     3.5     8.3    -      -       -      +
    296H  ASN      3.2     0.2    -      -       -      -
    297H  ALA*     1.3    74.8    -      -       -      +
    299H  ILE*     1.3    70.5    +      -       +      +
    301H  ALA*     2.9    17.9    +      -       -      +
    302H  VAL*     3.0    14.0    +      -       +      +
    322H  LEU*     6.5     0.4    -      -       +      -
    324H  PHE*     3.7    40.8    -      -       +      -
    326H  ASP*     5.5     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 299 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59H  LEU*     3.8    20.6    -      -       +      -
    180H  GLY*     3.8    22.9    -      -       -      -
    181H  GLY      3.6    15.9    -      -       -      +
    182H  THR*     4.5     3.8    -      -       -      +
    187H  GLY*     3.5    12.6    -      -       -      +
    188H  ASN*     3.4    32.1    -      -       -      +
    189H  ALA*     3.9     7.2    -      -       +      +
    295H  THR*     3.2    16.0    +      -       +      +
    298H  VAL*     1.3    81.5    -      -       +      +
    300H  ALA*     1.3    58.8    +      -       -      +
    302H  VAL*     3.0     9.8    +      -       +      +
    303H  CYS*     2.9    28.8    +      -       -      -
    322H  LEU*     4.9     4.5    -      -       +      -
    324H  PHE*     4.4    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 300 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59H  LEU*     3.9    23.8    -      -       +      +
     62H  GLU*     3.6    26.5    -      -       +      -
     63H  LEU*     4.0     9.8    -      -       +      +
     66H  ASN*     3.6     2.1    +      -       -      +
    296H  ASN      3.0    17.4    +      -       -      +
    299H  ILE*     1.3    77.1    -      -       -      +
    301H  ALA*     1.3    60.8    +      -       -      +
    303H  CYS*     3.9     7.0    -      -       -      +
    304H  ALA*     2.8    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 301 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492G  THR*     3.2    23.2    -      -       -      +
    495G  ALA*     3.8     4.9    -      -       +      -
    496G  PHE*     3.4    23.8    -      -       +      +
    522G  TYR*     5.5     0.7    -      -       -      -
     66H  ASN*     3.7    10.3    -      -       -      +
    297H  ALA      3.0    14.9    +      -       -      +
    298H  VAL      2.9    10.5    +      -       -      +
    300H  ALA*     1.3    77.5    -      -       -      +
    302H  VAL*     1.3    63.0    +      -       -      +
    304H  ALA*     3.6     2.2    -      -       -      +
    305H  THR*     3.0    28.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 302 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    496G  PHE*     3.7    25.8    -      -       +      -
    522G  TYR*     4.0     8.1    -      -       -      +
    527G  GLN*     3.6    25.3    +      -       +      +
    189H  ALA*     3.5    23.6    -      -       +      -
    298H  VAL*     3.0    16.3    +      -       +      +
    299H  ILE*     3.0    10.9    +      -       +      +
    301H  ALA*     1.3    74.4    -      -       -      +
    303H  CYS*     1.3    68.1    +      -       -      +
    305H  THR*     3.1    14.4    +      -       -      -
    306H  GLU*     3.1    17.8    +      -       +      +
    318H  LEU*     5.3     2.7    -      -       +      -
    322H  LEU*     4.2    19.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 303 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59H  LEU*     5.4     1.3    -      -       -      -
     63H  LEU*     4.0    15.0    -      -       +      -
    142H  VAL*     4.4     1.8    -      -       +      -
    143H  CYS      5.0     3.6    -      -       -      -
    178H  ILE*     3.8    24.9    -      -       +      +
    179H  ASP*     4.1     1.3    -      -       -      -
    180H  GLY*     3.8    33.9    -      -       -      -
    189H  ALA*     4.0    13.0    -      -       -      -
    299H  ILE*     2.9    24.3    +      -       -      +
    300H  ALA*     3.9     5.6    -      -       -      +
    302H  VAL*     1.3    73.1    -      -       -      +
    304H  ALA*     1.3    65.4    +      -       -      +
    306H  GLU*     3.1     6.7    +      -       -      +
    307H  VAL*     3.0    26.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 304 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492G  THR*     3.6    12.2    -      -       +      +
     63H  LEU*     4.0    11.8    -      -       +      +
     66H  ASN*     3.3    32.1    -      -       +      +
     67H  LEU*     4.3    14.9    -      -       +      +
     70H  SER*     5.4     0.7    +      -       -      -
    300H  ALA      2.8    22.5    +      -       -      +
    301H  ALA      3.6     1.8    -      -       -      +
    303H  CYS*     1.3    74.1    -      -       -      +
    305H  THR*     1.3    63.0    +      -       -      +
    307H  VAL*     3.2     5.2    +      -       -      +
    308H  PHE*     3.1    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 305 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158G  LEU*     4.8     7.0    -      -       +      -
    492G  THR*     2.8    31.7    +      -       -      +
    493G  ILE*     4.2    12.9    -      -       +      +
    522G  TYR*     5.3     1.3    +      -       -      -
    524G  GLY      3.9    10.8    -      -       -      +
    527G  GLN*     3.6    22.0    -      -       -      +
    301H  ALA      3.0    10.8    +      -       -      -
    302H  VAL*     3.1     9.7    +      -       -      -
    304H  ALA*     1.3    77.3    -      -       -      +
    306H  GLU*     1.3    63.0    +      -       -      +
    308H  PHE*     3.2    11.9    +      -       +      +
    309H  LYS*     3.0    29.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 306 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527G  GLN*     2.9    25.0    +      -       +      +
    178H  ILE*     3.8    14.6    -      -       +      -
    191H  VAL*     4.0    17.8    -      -       +      +
    302H  VAL*     3.1    17.7    +      -       +      +
    303H  CYS*     3.1    11.2    +      -       -      +
    305H  THR*     1.3    72.3    -      -       -      +
    307H  VAL*     1.3    69.4    +      -       -      +
    309H  LYS*     2.9    39.8    +      -       -      +
    310H  ILE*     2.9    17.3    +      -       +      +
    317H  PRO*     3.3    13.0    -      -       -      +
    318H  LEU*     2.8    31.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 307 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51H  VAL*     4.6     6.1    -      -       +      -
     67H  LEU*     3.9    20.9    -      -       +      -
     72H  PHE*     3.9    12.6    -      -       +      -
    140H  ILE*     3.6    32.1    -      -       +      +
    142H  VAL*     3.7    26.0    -      -       +      -
    178H  ILE*     3.3    24.9    -      -       +      +
    303H  CYS      3.0    15.6    +      -       -      +
    304H  ALA      3.4     7.6    -      -       -      +
    306H  GLU*     1.3    76.8    -      -       -      +
    308H  PHE*     1.3    64.2    +      -       -      +
    310H  ILE*     3.2     4.1    +      -       -      +
    311H  ALA*     3.1    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 308 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492G  THR*     6.0     1.1    -      -       +      +
     20H  VAL*     3.9    22.2    -      -       +      -
     23H  PHE*     4.5    11.7    -      +       +      -
     24H  LEU*     4.1     9.9    -      -       +      -
     45H  LEU*     4.2     5.4    -      -       +      -
     70H  SER*     3.6    33.9    -      -       -      +
     72H  PHE*     3.7    24.0    -      +       +      -
    304H  ALA      3.1    11.8    +      -       -      +
    305H  THR*     3.2    15.5    -      -       +      +
    306H  GLU      3.0     0.4    -      -       -      -
    307H  VAL*     1.3    78.5    -      -       -      +
    309H  LYS*     1.3    61.7    +      -       +      +
    311H  ALA*     3.3     0.9    +      -       -      -
    312H  THR*     2.6    64.8    +      -       +      +
    314H  ALA*     4.1    14.4    -      -       +      -
    315H  TYR*     5.9     1.3    -      +       -      -
----------------------------------------------------------
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Residues in contact with LYS 309 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158G  LEU*     5.7     1.8    -      -       -      -
    524G  GLY      3.3    25.2    +      -       -      -
    525G  MET*     3.7    11.1    +      -       -      +
    527G  GLN*     3.8     2.6    -      -       -      +
    305H  THR*     3.0    22.0    +      -       +      +
    306H  GLU*     2.9    39.4    +      -       -      +
    308H  PHE*     1.3    81.2    -      -       +      +
    310H  ILE*     1.3    58.6    +      -       -      +
    312H  THR*     3.8     4.9    -      -       -      -
    313H  SER*     2.5    35.5    +      -       -      +
    314H  ALA      4.6     1.6    -      -       -      +
    315H  TYR*     3.4    46.8    -      -       +      +
    316H  ILE      3.3    25.0    +      -       -      +
    317H  PRO*     4.6     7.4    -      -       +      +
    318H  LEU*     4.3     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 310 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140H  ILE*     4.3    11.2    -      -       +      -
    176H  PRO*     3.8    36.3    -      -       +      -
    178H  ILE*     3.4    36.3    -      -       +      -
    191H  VAL*     4.1    17.7    -      -       +      -
    193H  LEU*     5.4     5.2    -      -       +      -
    306H  GLU*     2.9     8.7    +      -       +      +
    307H  VAL      3.2     6.3    +      -       -      +
    309H  LYS*     1.3    75.0    -      -       -      +
    311H  ALA*     1.3    59.1    +      -       -      +
    313H  SER*     4.7     5.7    +      -       -      -
    317H  PRO*     4.2    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 311 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45H  LEU*     3.9    14.8    -      -       +      +
     49H  CYS*     4.1    11.0    -      -       -      -
     72H  PHE*     3.8    27.1    -      -       +      -
    140H  ILE*     4.2     7.6    -      -       +      -
    307H  VAL      3.1    14.3    +      -       -      +
    308H  PHE      3.9     1.3    -      -       -      +
    310H  ILE*     1.3    77.0    -      -       -      +
    312H  THR*     1.3    61.4    +      -       -      +
    313H  SER*     5.3     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 312 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24H  LEU*     3.4    32.4    -      -       +      +
     35H  PHE*     3.5    12.3    -      -       -      -
     41H  SER*     6.4     0.4    -      -       -      -
     45H  LEU*     3.9    19.7    -      -       +      -
    308H  PHE*     2.6    50.0    +      -       +      +
    311H  ALA*     1.3    82.8    -      -       -      +
    313H  SER*     1.3    73.6    +      -       -      +
    314H  ALA*     3.4     9.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 313 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31H  THR*     3.7     1.0    +      -       -      -
     32H  HIS*     3.7    26.2    -      -       -      +
     34H  ASP*     4.3     7.1    +      -       -      +
     35H  PHE*     2.8    42.6    -      -       -      +
    309H  LYS      2.5    23.0    +      -       -      -
    310H  ILE*     4.7     5.7    +      -       -      -
    311H  ALA      3.8     0.5    -      -       -      -
    312H  THR*     1.3    76.5    -      -       -      +
    314H  ALA*     1.3    56.5    +      -       -      +
    315H  TYR      3.3    10.1    -      -       -      -
----------------------------------------------------------
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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