Contacts of the helix formed by residues 49 - 73 (chain C) in PDB entry 5Y3R


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 ALA 49 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48C  PRO*     1.3    73.8    -      -       +      +
     50C  VAL*     1.3    77.0    +      -       +      +
     52C  ALA*     3.0    16.0    +      -       -      +
     53C  LEU*     3.0    22.5    +      -       -      +
     54C  GLN      3.8     1.4    +      -       -      -
    847C  SER*     5.1    10.5    -      -       -      +
    850C  GLU*     6.1     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  SER*     4.6     4.9    -      -       -      -
     48C  PRO      2.6    10.0    +      -       -      +
     49C  ALA*     1.3    82.7    -      -       +      +
     51C  LEU*     1.3    66.2    +      -       +      +
     54C  GLN*     2.3    53.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     6.2     2.9    -      -       +      -
     45C  SER*     3.9    12.8    -      -       -      +
     46C  SER*     3.3    22.7    -      -       -      +
     47C  SER*     2.9    47.8    +      -       -      +
     50C  VAL*     1.3    84.0    -      -       +      +
     52C  ALA*     1.3    53.4    +      -       -      +
     54C  GLN*     3.2    26.9    -      -       -      +
     55C  THR*     2.7    45.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  SER*     6.4     0.4    -      -       -      -
     47C  SER      2.5    19.8    +      -       -      +
     48C  PRO*     3.8    12.8    -      -       +      -
     49C  ALA      3.0     7.3    +      -       -      +
     51C  LEU*     1.3    71.9    -      -       -      +
     53C  LEU*     1.3    65.3    +      -       +      +
     55C  THR*     2.0    27.4    +      -       -      -
     56C  SER*     3.0     9.4    +      -       -      -
     96C  MET*     4.2     8.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  ALA*     3.0    16.4    +      -       -      +
     52C  ALA*     1.3    80.6    -      -       +      +
     54C  GLN*     1.3    61.3    +      -       -      +
     56C  SER*     2.6    40.3    +      -       -      +
     57C  LEU*     2.9    16.0    +      -       -      +
     96C  MET*     4.6     7.0    -      -       +      -
     99C  LYS*     4.8    19.5    -      -       +      -
   3100C  LYS*     5.5     7.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10C  CYS*     4.7    20.0    -      -       -      +
     12C  LEU*     4.9     8.2    -      -       +      +
     13C  LEU*     5.2     0.8    -      -       +      +
     49C  ALA      3.8     0.2    +      -       -      -
     50C  VAL*     2.3    61.2    +      -       -      +
     51C  LEU*     3.2    16.3    -      -       -      +
     53C  LEU*     1.3    77.2    -      -       -      +
     55C  THR*     1.3    63.7    +      -       +      +
     57C  LEU*     3.3     9.4    +      -       -      +
     58C  VAL*     2.9    29.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     4.9     9.6    -      -       +      -
     42C  CYS*     4.5    26.0    -      -       -      +
     43C  VAL*     6.3     0.2    -      -       -      -
     45C  SER      5.4     2.0    -      -       -      +
     46C  SER*     5.7     2.5    -      -       -      +
     51C  LEU*     2.7    25.6    +      -       +      +
     52C  ALA*     2.0    34.3    +      -       -      -
     54C  GLN*     1.3    72.2    -      -       +      +
     56C  SER*     1.3    54.9    +      -       -      -
     58C  VAL*     2.1    41.1    +      -       +      -
     59C  PHE*     2.7    28.2    +      -       +      -
     95C  LYS*     5.5     7.9    +      -       -      +
     96C  MET*     4.9     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52C  ALA      3.1     1.9    +      -       -      -
     53C  LEU*     2.6    47.2    +      -       -      +
     55C  THR*     1.3    73.2    +      -       -      +
     57C  LEU*     1.3    51.3    +      -       -      -
     59C  PHE*     4.2     6.5    -      -       -      +
     60C  SER*     2.1    39.6    +      -       -      -
     63C  PHE*     5.1     0.3    -      -       -      -
     96C  MET*     3.1    25.5    -      -       -      +
     99C  LYS*     5.4     3.9    -      -       -      +
   3100C  LYS*     6.1     2.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     4.6     5.3    -      -       +      +
     53C  LEU      2.9    10.6    +      -       -      +
     54C  GLN*     3.7     8.7    -      -       -      +
     55C  THR      2.6     4.6    +      -       -      -
     56C  SER*     1.3    76.5    -      -       -      +
     58C  VAL*     1.3    58.3    +      -       +      +
     60C  SER*     3.2     7.9    -      -       -      +
     61C  ARG*     2.9    64.9    +      -       -      +
   3097C  ASP*     5.9     2.2    -      -       +      +
   3100C  LYS*     3.5    37.9    -      -       +      +
   3101C  TYR*     3.6    35.4    -      -       +      -
   3104C  GLN*     4.9     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10C  CYS      4.5     0.9    -      -       -      +
     12C  LEU*     3.6    39.7    -      -       +      -
     13C  LEU*     3.4    41.1    -      -       +      +
     16C  GLN*     4.7     6.1    -      -       -      +
     42C  CYS*     5.8     2.2    -      -       -      -
     54C  GLN*     2.9    33.5    +      -       +      +
     55C  THR*     2.1    25.1    +      -       +      +
     57C  LEU*     1.3    69.2    -      -       -      +
     59C  PHE*     1.3    72.6    +      -       +      +
     62C  ASP*     2.9    24.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42C  CYS*     3.2    35.9    -      -       -      -
     55C  THR*     2.7    27.2    +      -       +      +
     56C  SER*     4.2     5.6    -      -       -      +
     58C  VAL*     1.3    79.6    -      -       +      +
     60C  SER*     1.3    63.8    +      -       -      +
     62C  ASP*     4.7     4.5    -      -       +      -
     63C  PHE*     2.8    53.2    +      +       +      -
     92C  PHE*     3.3    40.8    -      +       +      -
     95C  LYS*     3.5    40.6    -      -       +      -
     96C  MET*     5.2    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56C  SER      2.1    30.3    +      -       -      -
     57C  LEU*     3.2    17.8    -      -       -      +
     58C  VAL      3.1     0.2    -      -       -      -
     59C  PHE*     1.3    75.4    -      -       -      +
     61C  ARG*     1.3    63.6    +      -       -      +
     63C  PHE*     2.9    33.7    -      -       -      +
     64C  GLY*     3.1     4.9    +      -       -      -
    103C  TYR*     2.9    38.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     5.0    10.5    -      -       +      -
     16C  GLN*     4.1     2.0    -      -       -      -
     17C  GLU*     3.5    11.7    -      -       -      +
     57C  LEU*     2.9    51.9    +      -       -      +
     58C  VAL      4.3     0.9    -      -       -      +
     60C  SER*     1.3    75.0    -      -       -      +
     62C  ASP*     1.3    61.1    +      -       -      +
     63C  PHE      3.3     0.2    -      -       -      -
     64C  GLY*     3.8     4.6    -      -       -      +
     65C  LEU*     2.9    29.8    +      -       -      +
    103C  TYR*     4.9     1.8    -      -       -      +
   3097C  ASP*     4.6    16.2    +      -       -      +
   3098C  ARG*     4.9     1.8    -      -       -      +
   3101C  TYR*     4.2    20.2    -      -       -      +
   3102C  TYR*     3.9    24.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  GLN*     2.9    37.7    -      -       -      +
     20C  SER*     6.1     0.2    -      -       -      -
     58C  VAL*     2.9    15.4    +      -       +      +
     59C  PHE*     3.9     6.1    -      -       +      +
     61C  ARG*     1.3    75.4    -      -       -      +
     63C  PHE*     1.3    61.7    +      -       +      +
     65C  LEU*     3.1    17.8    -      -       -      +
     66C  LEU*     2.8    34.3    +      -       -      +
     85C  ILE*     5.5     5.5    -      -       -      +
     89C  LEU*     5.5     5.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  PHE*     2.8    61.4    +      +       +      -
     60C  SER*     2.9    10.5    -      -       -      +
     62C  ASP*     1.3    73.2    -      -       +      +
     64C  GLY*     1.3    68.3    +      -       -      +
     65C  LEU      2.9     1.2    +      -       -      -
     66C  LEU*     3.0    13.2    +      -       -      -
     67C  VAL*     3.1    22.6    +      -       +      +
     89C  LEU*     5.2    16.4    -      -       +      -
     92C  PHE*     5.8     8.7    -      +       +      -
     96C  MET*     6.5     0.9    -      -       +      -
    103C  TYR*     3.1    51.1    -      +       +      -
    106C  GLU*     4.7     1.3    -      -       -      +
    107C  ILE*     4.3    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 64 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  SER      3.1     8.9    +      -       -      -
     61C  ARG*     3.7     5.1    +      -       -      -
     62C  ASP      3.4     0.2    -      -       -      -
     63C  PHE*     1.3    79.1    -      -       -      +
     65C  LEU*     1.3    63.9    +      -       -      +
     67C  VAL*     4.4     0.6    -      -       -      +
     68C  PHE*     2.9    36.7    +      -       -      -
    103C  TYR*     4.6     1.1    -      -       -      -
    106C  GLU*     3.7    19.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  GLN*     3.1    22.9    -      -       +      +
     17C  GLU*     3.2    43.5    -      -       +      +
     20C  SER*     4.7     5.6    -      -       -      +
     24C  ARG*     5.0     8.5    -      -       -      +
     61C  ARG      2.9    22.1    +      -       -      +
     62C  ASP*     3.1    28.0    -      -       -      +
     63C  PHE      2.9     0.4    +      -       -      -
     64C  GLY*     1.3    74.8    -      -       -      +
     66C  LEU*     1.3    57.7    +      -       -      +
     68C  PHE*     2.6    35.6    +      -       +      +
     69C  VAL*     2.9    22.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62C  ASP*     2.8    24.1    +      -       -      +
     63C  PHE*     4.4     1.1    -      -       -      +
     65C  LEU*     1.3    73.8    -      -       +      +
     67C  VAL*     1.3    71.3    +      -       -      +
     69C  VAL*     3.4    17.9    -      -       +      -
     70C  ARG*     2.9    46.3    +      -       +      +
     71C  LYS      3.5     1.7    +      -       -      -
     73C  LEU*     5.3     0.4    -      -       +      -
     82C  ARG*     5.5     2.2    -      -       +      -
     85C  ILE*     3.3    52.9    -      -       +      -
     86C  LEU*     5.9     1.3    -      -       +      -
     89C  LEU*     4.6    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  PHE*     3.1    24.4    +      -       +      +
     64C  GLY      4.4     0.7    -      -       -      +
     66C  LEU*     1.3    80.1    -      -       -      +
     68C  PHE*     1.3    65.4    +      -       +      +
     71C  LYS*     2.3    50.7    +      -       +      +
    106C  GLU*     4.7    14.8    -      -       +      +
    107C  ILE*     5.3     5.2    -      -       +      -
    110C  THR*     3.3    48.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  ARG*     5.0     8.3    -      -       -      +
     64C  GLY*     2.9    30.3    -      -       -      -
     65C  LEU*     2.6    15.1    +      -       +      +
     67C  VAL*     1.3    82.5    -      -       +      +
     69C  VAL*     1.3    69.1    +      -       +      +
     71C  LYS*     3.3     6.8    -      -       +      +
     72C  SER*     2.9    22.9    +      -       -      -
    106C  GLU*     5.0     6.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  SER*     5.0    21.1    -      -       -      +
     24C  ARG*     3.6    37.2    -      -       +      +
     65C  LEU*     2.9    34.8    +      -       +      +
     66C  LEU*     3.0    20.4    +      -       +      -
     68C  PHE*     1.3    70.0    -      -       -      +
     70C  ARG*     1.3    60.1    +      -       -      +
     72C  SER*     2.1    31.2    +      -       -      -
     73C  LEU*     2.9    30.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     2.9    32.0    +      -       +      +
     69C  VAL*     1.3    75.9    -      -       -      +
     71C  LYS*     1.3    65.4    +      -       -      +
     73C  LEU*     2.9    60.6    +      -       +      +
     74C  ASN      3.0     8.9    +      -       -      +
     75C  SER*     3.0    23.0    +      -       -      +
     78C  PHE*     2.7    31.6    +      -       -      +
     79C  ARG*     2.8    37.0    -      -       -      +
     81C  CYS*     5.3     0.9    -      -       -      -
     82C  ARG*     2.7    50.5    +      -       +      +
     85C  ILE*     5.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 71 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300B  ASP*     3.4     8.1    -      -       -      +
     66C  LEU      3.5     1.0    +      -       -      -
     67C  VAL*     2.3    48.1    +      -       +      +
     68C  PHE*     3.3     7.4    -      -       +      +
     70C  ARG*     1.3    78.5    -      -       -      +
     72C  SER*     1.3    64.4    -      -       -      +
    113C  SER*     5.3    18.7    +      -       -      -
    114C  VAL*     6.5     0.7    -      -       -      -
    117C  LYS*     3.3    25.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 72 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300B  ASP*     3.7    17.0    -      -       -      +
     24C  ARG*     5.8     1.7    +      -       -      -
     68C  PHE      2.9    11.6    +      -       -      -
     69C  VAL*     2.1    30.1    +      -       -      -
     71C  LYS*     1.3    76.9    -      -       -      +
     73C  LEU*     1.3    74.1    +      -       -      +
     74C  ASN*     3.3     7.4    +      -       -      +
    117C  LYS*     3.8     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  ARG*     5.0    19.7    -      -       +      +
     66C  LEU*     5.3     0.7    -      -       +      -
     69C  VAL*     2.9    32.6    +      -       +      +
     70C  ARG*     2.9    49.5    +      -       +      +
     72C  SER*     1.3    81.9    +      -       -      +
     74C  ASN*     1.3    56.4    +      -       -      +
     76C  ILE*     5.8     0.2    -      -       -      -
     78C  PHE*     3.5    41.7    -      -       +      -
     81C  CYS*     5.5     3.1    -      -       +      -
     85C  ILE*     6.5     0.2    -      -       +      -
    117C  LYS*     2.5    26.9    +      -       -      -
----------------------------------------------------------
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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