Contacts of the helix formed by residues 302 - 327 (chain E) in PDB entry 3EXG


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 SER 302 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1E  PHE*     4.0    17.9    -      -       -      -
    296E  VAL*     4.4     4.0    -      -       -      -
    301E  ALA*     1.3    75.3    -      -       -      +
    303E  VAL*     1.3    65.6    +      -       -      +
    304E  GLU*     2.8    22.7    +      -       -      +
    305E  GLU*     3.0    35.6    +      -       -      +
    306E  LEU*     3.2    12.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 303 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292E  LYS*     3.2    32.8    +      -       -      +
    296E  VAL*     3.9    20.5    -      -       +      +
    302E  SER*     1.3    71.1    -      -       -      +
    304E  GLU*     1.3    83.0    +      -       +      +
    306E  LEU*     3.7     3.1    +      -       -      +
    307E  LYS*     2.9    29.8    +      -       +      +
    206L  HIS*     6.2     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 304 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302E  SER*     2.8    26.1    +      -       -      +
    303E  VAL*     1.3    93.4    -      -       +      +
    305E  GLU*     1.3    59.5    +      -       -      +
    307E  LYS*     3.4     6.7    +      -       -      +
    308E  GLU*     2.9    39.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 305 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1E  PHE*     3.7     8.0    -      -       +      -
     29E  ARG*     2.9    31.3    +      -       -      -
     33E  LEU*     4.2    10.4    -      -       -      +
    301E  ALA*     3.2    28.1    -      -       -      +
    302E  SER*     3.0    24.4    +      -       -      +
    304E  GLU*     1.3    75.6    -      -       -      +
    306E  LEU*     1.3    63.3    +      -       +      +
    308E  GLU*     3.1    25.0    +      -       -      +
    309E  ILE*     3.1    22.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 306 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33E  LEU*     4.3     8.7    -      -       +      -
     36E  TYR*     3.7    39.6    +      -       +      +
    292E  LYS*     3.6    40.4    -      -       +      +
    295E  MET*     4.0    28.7    -      -       +      -
    296E  VAL*     4.6     7.9    -      -       +      -
    301E  ALA*     4.3     7.9    -      -       +      -
    302E  SER      3.2    13.2    +      -       -      +
    303E  VAL*     3.9     4.0    -      -       -      +
    305E  GLU*     1.3    79.5    -      -       +      +
    307E  LYS*     1.3    58.5    +      -       -      +
    309E  ILE*     3.0    31.1    +      -       +      +
    310E  ASP*     3.1    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 307 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292E  LYS*     5.7     4.0    -      -       -      +
    303E  VAL*     2.9    24.0    +      -       +      +
    304E  GLU*     3.6     8.3    -      -       -      +
    305E  GLU      3.3     0.2    -      -       -      -
    306E  LEU*     1.3    75.7    -      -       -      +
    308E  GLU*     1.3    58.1    +      -       -      +
    310E  ASP*     3.3    29.0    -      -       -      +
    311E  VAL*     3.2    22.0    -      -       +      +
    205L  THR*     3.8    25.6    +      -       -      +
    206L  HIS*     5.0    11.5    +      -       +      +
    255L  LYS      3.6    21.8    +      -       -      -
    256L  THR      4.8     1.8    +      -       -      -
    257L  ASN*     4.2    18.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 308 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304E  GLU*     2.9    32.2    +      -       +      +
    305E  GLU*     3.3    13.4    -      -       -      +
    306E  LEU      3.1     0.6    -      -       -      -
    307E  LYS*     1.3    75.6    -      -       -      +
    309E  ILE*     1.3    62.6    +      -       +      +
    310E  ASP      3.2     0.2    -      -       -      -
    311E  VAL*     3.1    11.9    +      -       +      +
    312E  GLU*     3.0    36.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 309 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33E  LEU*     4.2    27.4    -      -       +      +
     36E  TYR*     4.3    10.3    -      -       +      -
     37E  ARG*     3.5    59.9    -      -       +      +
     40E  GLN*     5.7     0.4    -      -       +      -
    305E  GLU*     3.3    16.6    -      -       +      +
    306E  LEU*     3.0    26.4    +      -       +      +
    308E  GLU*     1.3    75.8    -      -       +      +
    310E  ASP*     1.3    58.4    +      -       -      +
    312E  GLU*     3.2     5.1    +      -       -      +
    313E  VAL*     2.9    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 310 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  TYR*     3.2    21.1    +      -       -      -
     40E  GLN*     3.0    33.2    -      -       -      +
     44E  ARG*     5.4     0.7    -      -       -      +
    306E  LEU      3.1     6.4    +      -       -      -
    307E  LYS*     3.3    44.9    -      -       +      +
    309E  ILE*     1.3    75.0    -      -       -      +
    311E  VAL*     1.3    57.6    +      -       -      +
    313E  VAL*     3.4     6.7    +      -       -      +
    314E  ARG*     3.0    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 311 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307E  LYS*     3.2    24.5    -      -       +      +
    308E  GLU*     3.1    11.8    +      -       +      +
    310E  ASP*     1.3    77.1    -      -       -      +
    312E  GLU*     1.3    69.0    +      -       +      +
    314E  ARG*     3.5     4.5    +      -       -      +
    315E  LYS*     3.2    24.0    +      -       +      +
    254L  MET      4.1    18.4    -      -       -      +
    255L  LYS*     3.9    36.1    -      -       +      +
    287L  PHE*     5.6     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 312 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ARG*     2.7    39.9    +      -       -      +
    308E  GLU*     3.0    22.7    +      -       -      +
    309E  ILE*     3.6     9.6    +      -       -      +
    311E  VAL*     1.3    79.5    -      -       +      +
    313E  VAL*     1.3    64.2    +      -       -      +
    315E  LYS*     3.4     5.5    +      -       -      +
    316E  GLU*     3.0    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 313 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ARG*     4.1    24.9    -      -       +      +
     40E  GLN*     3.7    23.6    -      -       +      +
     41E  THR*     3.7    26.9    -      -       +      +
     44E  ARG*     3.6    27.4    -      -       +      -
    309E  ILE*     2.9    21.9    +      -       +      +
    310E  ASP*     3.6     5.6    -      -       -      +
    312E  GLU*     1.3    77.0    -      -       -      +
    314E  ARG*     1.3    58.5    +      -       -      +
    316E  GLU*     2.8    30.2    -      -       +      +
    317E  ILE*     2.9    12.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 314 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44E  ARG*     3.2    49.2    -      -       +      +
    310E  ASP      3.0    17.7    +      -       -      +
    311E  VAL*     4.2     4.0    -      -       -      +
    312E  GLU      3.4     0.2    -      -       -      -
    313E  VAL*     1.3    77.8    -      -       -      +
    315E  LYS*     1.3    61.7    +      -       -      +
    317E  ILE*     3.5     7.9    +      -       -      +
    318E  GLU*     3.0    31.1    +      -       -      +
    257L  ASN*     3.3    23.5    +      -       -      +
    286L  ASN      3.0    28.2    +      -       -      -
    287L  PHE*     3.1    37.8    +      -       +      -
    288L  LEU      4.0     1.4    +      -       -      -
    289L  ASP*     3.0    26.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 315 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311E  VAL*     3.2    15.8    +      -       +      +
    312E  GLU*     3.7     9.4    -      -       -      +
    314E  ARG*     1.3    73.5    -      -       -      +
    316E  GLU*     1.3    66.1    +      -       -      +
    318E  GLU*     3.1     3.7    +      -       +      +
    319E  ASP*     2.9    61.4    +      -       -      +
    254L  MET*     5.7     8.0    -      -       -      -
    287L  PHE*     4.2    16.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 316 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ARG*     5.5     5.5    +      -       -      +
     41E  THR*     5.7     4.9    -      -       +      -
    102E  VAL*     5.6     9.2    -      -       +      -
    312E  GLU      3.0    15.6    +      -       -      +
    313E  VAL*     2.8    20.2    -      -       +      +
    315E  LYS*     1.3    76.2    -      -       -      +
    317E  ILE*     1.3    64.4    +      -       +      +
    319E  ASP*     3.3    13.0    +      -       -      +
    320E  ALA*     3.1    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 317 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41E  THR*     4.2    10.1    -      -       +      +
     44E  ARG*     3.6    28.5    -      -       +      +
     45E  MET*     3.8    16.4    -      -       +      +
     48E  LYS*     3.6    39.0    -      -       +      -
    102E  VAL*     3.6    32.5    -      -       +      -
    106E  LEU*     4.8     3.6    -      -       +      -
    313E  VAL*     2.9    18.5    +      -       +      +
    314E  ARG*     3.8     9.4    -      -       +      +
    316E  GLU*     1.3    76.8    -      -       +      +
    318E  GLU*     1.3    62.0    +      -       -      +
    320E  ALA*     3.0     4.3    +      -       -      +
    321E  ALA*     2.7    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 318 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48E  LYS*     3.0    38.2    +      -       -      -
    314E  ARG*     3.0    23.7    +      -       -      +
    315E  LYS*     3.6     4.5    -      -       +      +
    317E  ILE*     1.3    83.3    -      -       -      +
    319E  ASP*     1.3    62.1    +      -       -      +
    321E  ALA*     4.1     4.0    -      -       -      +
    322E  GLN*     3.2    24.4    +      -       -      +
    283L  PRO      5.2     2.9    -      -       -      +
    286L  ASN*     3.6    27.8    +      -       +      +
    287L  PHE*     3.8    27.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 319 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103E  ARG*     4.9     7.8    +      -       -      +
    315E  LYS*     2.9    48.2    +      -       -      +
    316E  GLU*     3.4    16.0    +      -       -      +
    318E  GLU*     1.3    75.1    -      -       -      +
    320E  ALA*     1.3    59.0    +      -       -      +
    322E  GLN*     3.5    12.9    +      -       -      +
    323E  PHE*     3.2    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 320 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102E  VAL*     4.0    28.0    -      -       +      +
    103E  ARG*     4.2    28.9    -      -       +      +
    106E  LEU*     4.4     4.3    -      -       +      -
    316E  GLU      3.1    12.5    +      -       -      +
    317E  ILE      3.0     6.7    +      -       -      +
    319E  ASP*     1.3    73.5    -      -       -      +
    321E  ALA*     1.3    54.5    +      -       -      +
    322E  GLN      3.1     0.9    -      -       -      -
    323E  PHE*     2.7     8.7    +      -       -      +
    324E  ALA*     2.7    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 321 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48E  LYS*     3.7    39.7    -      -       +      -
     52E  LEU*     4.3     6.1    -      -       +      -
    106E  LEU*     3.7    13.4    -      -       +      +
    317E  ILE      2.7    18.4    +      -       -      +
    318E  GLU*     4.1     4.9    -      -       -      +
    320E  ALA*     1.3    72.3    -      -       -      +
    322E  GLN*     1.3    61.7    +      -       -      +
    324E  ALA*     3.7     3.8    -      -       -      +
    325E  THR*     3.0    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 322 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103E  ARG*     5.9     1.2    -      -       -      +
    318E  GLU      3.2    15.2    +      -       -      +
    319E  ASP*     3.5    15.4    +      -       -      +
    320E  ALA      3.1     1.4    -      -       -      -
    321E  ALA*     1.3    79.8    -      -       -      +
    323E  PHE*     1.3    73.4    +      -       -      +
    325E  THR*     3.6     6.9    +      -       -      +
    326E  ALA*     3.3    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 323 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103E  ARG*     3.3    66.0    -      -       +      +
    107E  ALA*     3.9    21.3    -      -       +      -
    114E  GLY*     4.4    13.5    -      -       -      -
    319E  ASP      3.2    13.7    +      -       -      +
    320E  ALA      2.7     9.2    +      -       -      +
    322E  GLN*     1.3    87.9    -      -       -      +
    324E  ALA*     1.3    66.2    +      -       -      +
    326E  ALA*     3.2     2.8    +      -       -      +
    327E  ASP*     3.0    53.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 324 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52E  LEU*     5.8     1.1    -      -       +      -
    103E  ARG      4.9     0.2    -      -       -      +
    106E  LEU*     3.9    13.2    -      -       +      -
    107E  ALA*     3.7    32.1    -      -       +      +
    110E  THR*     3.2    21.9    +      -       +      +
    112E  ARG*     3.3    17.8    +      -       -      +
    320E  ALA      2.7    18.5    +      -       -      +
    321E  ALA*     3.7     6.1    -      -       -      +
    323E  PHE*     1.3    81.8    -      -       +      +
    325E  THR*     1.3    59.5    +      -       +      +
    326E  ALA      3.4     0.5    +      -       -      -
    327E  ASP*     4.0     1.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 325 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52E  LEU*     3.7    30.5    -      -       +      -
     57E  ILE*     4.6    15.0    -      -       +      -
    110E  THR*     4.6     4.9    -      -       +      -
    112E  ARG*     3.0    21.7    +      -       -      +
    321E  ALA*     3.0    23.3    +      -       +      +
    322E  GLN*     3.6     8.3    +      -       -      -
    324E  ALA*     1.3    77.2    -      -       -      +
    326E  ALA*     1.3    59.0    +      -       -      +
    328J  ASN*     5.8     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 326 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112E  ARG*     4.4     0.6    +      -       -      -
    322E  GLN*     3.3    25.7    +      -       -      +
    323E  PHE*     3.2     3.9    +      -       -      +
    325E  THR*     1.3    83.6    +      -       -      +
    327E  ASP*     1.3    68.2    +      -       -      +
    328E  PRO*     3.5     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 327 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107E  ALA*     5.6     0.4    -      -       +      -
    112E  ARG*     3.1    38.8    +      -       +      +
    113E  LYS*     3.5    12.8    +      -       -      +
    114E  GLY*     2.8    35.6    +      -       -      -
    323E  PHE*     3.0    41.1    +      -       +      +
    324E  ALA*     4.2     1.3    -      -       -      +
    325E  THR      3.7     0.2    -      -       -      -
    326E  ALA*     1.3    76.7    -      -       -      +
    328E  PRO*     1.3    78.7    -      -       -      +
----------------------------------------------------------
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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