Contacts of the helix formed by residues 72 - 96 (chain E) in PDB entry 5JRE


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 PHE 72 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15E  LEU*     3.4    37.0    -      -       +      -
     18E  LYS*     4.9     0.9    -      -       +      -
     19E  LYS*     3.7    36.6    -      -       +      -
     22E  ILE*     3.9    15.3    -      -       +      +
     66E  LEU*     3.5     6.8    -      -       -      +
     69E  TYR*     2.9    24.1    +      +       +      +
     71E  MET*     1.3   108.7    -      -       +      +
     73E  TYR*     1.3    66.7    +      -       -      +
     74E  SER      3.2     2.9    -      -       -      -
     75E  ASN*     3.0    33.1    +      -       +      +
     76E  GLY      3.4     7.6    +      -       -      -
    109F  TRP*     3.9    35.0    -      +       -      -
----------------------------------------------------------
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Residues in contact with TYR 73 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66E  LEU*     3.9    34.5    -      -       +      +
     69E  TYR      3.9     0.8    +      -       -      -
     70E  PRO*     3.1    21.3    +      -       +      +
     71E  MET      3.5     0.4    -      -       -      -
     72E  PHE*     1.3    75.6    -      -       -      +
     74E  SER*     1.3    67.9    +      -       -      +
     76E  GLY*     3.1     4.2    +      -       -      -
     77E  PHE*     3.1    45.6    +      +       -      -
     80E  LEU*     5.9     0.9    -      -       +      -
    107E  ASP*     2.7    37.1    +      -       -      -
    109E  TRP*     4.3     0.8    -      +       -      +
    110E  VAL*     3.6    13.3    +      -       +      +
     70F  PRO*     3.8    22.2    -      -       +      +
     71F  MET*     3.5    43.7    -      -       +      +
     73F  TYR*     5.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 74 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71E  MET      5.1     2.7    +      -       -      -
     72E  PHE      3.2     0.8    -      -       -      -
     73E  TYR*     1.3    86.5    -      -       -      +
     75E  ASN*     1.3    65.4    +      -       -      +
     76E  GLY      3.4     0.3    +      -       -      -
     77E  PHE*     3.5    16.8    +      -       -      +
     78E  ILE*     4.8     4.9    +      -       -      +
     74F  SER*     5.9     7.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 75 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19E  LYS*     3.7    25.4    -      -       +      +
     22E  ILE*     4.0    10.9    -      -       +      +
     23E  VAL*     3.8    26.6    -      -       +      +
     26E  SER*     3.7    17.3    +      -       -      -
     71E  MET      4.3     1.6    -      -       -      +
     72E  PHE*     3.0    38.7    +      -       +      +
     74E  SER*     1.3    79.1    -      -       -      +
     76E  GLY*     1.3    57.8    +      -       -      +
     78E  ILE      5.2     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 76 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22E  ILE*     3.8     6.2    -      -       -      +
     26E  SER*     3.9     3.7    +      -       -      -
     62E  GLN*     3.8    22.9    +      -       -      -
     66E  LEU*     4.3    11.7    -      -       -      -
     72E  PHE      3.4     3.6    +      -       -      -
     73E  TYR      3.1     7.5    +      -       -      -
     75E  ASN*     1.3    77.5    -      -       -      +
     77E  PHE*     1.3    66.3    +      -       -      +
     78E  ILE      3.4     2.8    +      -       -      -
     79E  GLY*     3.4     2.8    +      -       -      -
     80E  LEU*     3.3    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 77 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66E  LEU*     5.4     0.4    -      -       -      -
     73E  TYR*     3.1    37.8    +      +       -      +
     74E  SER*     3.5    18.4    +      -       -      +
     76E  GLY*     1.3    77.3    -      -       -      +
     78E  ILE*     1.3    64.1    +      -       +      +
     80E  LEU*     3.1     7.7    +      -       -      +
     81E  GLN*     2.9    47.9    +      -       +      +
    109E  TRP*     3.7    16.8    -      +       -      -
    110E  VAL*     3.4    28.9    -      -       +      +
    113E  PHE*     3.7    43.7    -      +       +      -
----------------------------------------------------------
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Residues in contact with ILE 78 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163B  ARG*     6.0     7.6    -      -       -      +
     26E  SER*     4.4     5.3    +      -       -      +
     30E  SER*     5.6     3.6    -      -       -      -
     74E  SER      4.8     4.2    +      -       -      +
     75E  ASN      5.2     0.6    +      -       -      -
     76E  GLY      3.4     0.6    -      -       -      -
     77E  PHE*     1.3    82.2    -      -       +      +
     79E  GLY*     1.3    57.9    +      -       -      +
     81E  GLN*     3.3    17.9    +      -       -      +
     82E  GLU*     2.9    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 79 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26E  SER*     3.0    39.2    +      -       -      -
     29E  MET*     3.4    23.5    -      -       -      +
     30E  SER*     4.7     2.0    -      -       -      -
     76E  GLY      3.4     1.3    +      -       -      -
     77E  PHE      3.3     0.2    -      -       -      -
     78E  ILE*     1.3    77.8    -      -       -      +
     80E  LEU*     1.3    56.2    +      -       -      +
     82E  GLU*     3.4     7.4    +      -       -      +
     83E  TYR*     3.0    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 80 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29E  MET*     3.8    20.2    -      -       +      -
     59E  ALA*     4.2     4.9    -      -       +      +
     62E  GLN*     4.3    10.1    -      -       +      -
     63E  ILE*     3.8    35.7    -      -       +      -
     66E  LEU*     3.6    30.5    -      -       +      -
     73E  TYR*     5.9     1.8    -      -       +      -
     76E  GLY      3.3     9.1    +      -       -      +
     77E  PHE*     3.1     7.4    +      -       -      +
     79E  GLY*     1.3    73.2    -      -       -      +
     81E  GLN*     1.3    66.4    +      -       -      +
     83E  TYR*     3.2    15.3    +      -       +      +
     84E  VAL*     3.0    26.7    +      -       -      +
    106E  VAL*     4.4     4.5    -      -       +      -
    110E  VAL*     4.1    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 81 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77E  PHE*     2.9    38.4    +      -       +      +
     78E  ILE*     3.4    19.8    -      -       -      +
     80E  LEU*     1.3    78.4    -      -       -      +
     82E  GLU*     1.3    60.3    +      -       +      +
     84E  VAL*     3.3     1.8    +      -       -      +
     85E  GLU*     3.0    24.2    +      -       -      +
    110E  VAL*     4.5     9.3    -      -       +      +
    113E  PHE*     3.5    18.8    +      -       -      +
    114E  GLY*     3.6    26.2    -      -       -      +
    117E  ASP*     2.6    27.4    +      -       -      +
    165E  LYS*     3.8    12.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 82 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163B  ARG*     5.8     0.2    +      -       -      -
     30E  SER*     3.3    23.8    +      -       -      +
     33E  SER*     3.0    24.0    +      -       -      +
     34E  LYS*     2.8    33.3    +      -       -      +
     37E  ILE*     5.2     0.2    -      -       -      +
     78E  ILE*     2.9    37.2    +      -       +      +
     79E  GLY      3.8     4.0    -      -       -      +
     81E  GLN*     1.3    77.6    -      -       +      +
     83E  TYR*     1.3    59.7    +      -       -      +
     85E  GLU*     3.6    19.0    -      -       -      +
     86E  ALA*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 83 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29E  MET*     3.7    11.0    -      -       +      -
     33E  SER*     3.5     8.2    +      -       -      -
     55E  LEU*     3.8    14.4    -      -       +      -
     56E  THR*     4.1    18.9    -      -       -      +
     59E  ALA*     3.7    31.7    -      -       +      +
     63E  ILE*     4.9     0.8    -      -       +      +
     79E  GLY      3.0    13.9    +      -       -      +
     80E  LEU*     3.3    19.7    -      -       +      +
     82E  GLU*     1.3    74.4    -      -       -      +
     84E  VAL*     1.3    67.1    +      -       +      +
     86E  ALA*     3.4     0.5    +      -       -      +
     87E  LEU*     3.0    56.7    +      -       +      +
    103E  GLU      5.0     0.2    +      -       -      -
    104E  LEU*     2.7    45.6    +      -       +      +
    106E  VAL*     3.8    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 84 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80E  LEU      3.0    17.3    +      -       -      +
     81E  GLN      3.3     6.5    +      -       -      +
     83E  TYR*     1.3    76.2    -      -       +      +
     85E  GLU*     1.3    59.8    +      -       -      +
     87E  LEU*     4.1     0.5    -      -       -      +
     88E  ALA*     2.9    29.3    +      -       +      +
    104E  LEU*     3.9    23.2    -      -       +      +
    106E  VAL*     3.9    22.9    -      -       +      -
    110E  VAL*     3.9    21.1    -      -       +      -
    111E  TYR*     3.9    28.3    -      -       +      +
    114E  GLY*     4.0     9.0    -      -       -      -
    115E  ILE*     4.0    12.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 85 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ILE*     3.9     9.6    -      -       +      +
     81E  GLN*     3.0    16.8    +      -       -      +
     82E  GLU*     3.6    20.5    -      -       -      +
     84E  VAL*     1.3    78.4    -      -       -      +
     86E  ALA*     1.3    60.6    +      -       -      +
     88E  ALA*     3.7     2.4    -      -       -      +
     89E  LEU*     3.1    22.7    +      -       -      +
    114E  GLY      3.8    13.4    +      -       -      +
    117E  ASP*     3.7    39.4    -      -       +      +
    118E  ILE*     3.9     8.8    -      -       +      +
    121E  GLU*     2.9    40.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 86 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33E  SER*     3.8    32.1    -      -       -      +
     36E  LEU*     4.0    18.4    -      -       +      +
     37E  ILE*     3.9    16.5    -      -       +      +
     40E  MET*     5.9     0.3    -      -       -      +
     55E  LEU*     4.1     2.2    -      -       +      -
     82E  GLU      3.0    18.3    +      -       -      +
     83E  TYR      3.9     2.9    -      -       -      +
     85E  GLU*     1.3    78.1    -      -       -      +
     87E  LEU*     1.3    57.8    +      -       -      +
     89E  LEU*     3.3     4.0    +      -       -      +
     90E  TYR*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  LEU*     4.0    11.2    -      -       +      -
     52E  LYS*     4.5    22.4    -      -       +      -
     55E  LEU*     3.8    18.4    -      -       +      -
     56E  THR*     4.0    15.3    -      -       +      +
     83E  TYR*     3.0    50.6    +      -       +      +
     84E  VAL      4.1     0.9    -      -       -      +
     86E  ALA*     1.3    74.2    -      -       -      +
     88E  ALA*     1.3    60.0    +      -       -      +
     90E  TYR*     3.3     5.0    -      -       +      +
     91E  TYR*     2.9    42.5    +      -       +      -
     99E  PRO*     4.4     0.9    -      -       -      -
    104E  LEU*     3.5    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 88 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84E  VAL*     2.9    20.1    +      -       +      +
     85E  GLU      3.7     0.2    -      -       -      +
     87E  LEU*     1.3    77.9    -      -       -      +
     89E  LEU*     1.3    56.4    +      -       -      +
     91E  TYR      3.8     0.5    -      -       -      -
     92E  TYR*     2.8    29.9    +      -       -      +
     97E  ARG      4.0     3.8    -      -       -      +
     98E  ILE*     4.1     7.8    -      -       +      +
     99E  PRO*     3.6    22.3    -      -       +      +
    115E  ILE*     4.1    14.6    -      -       +      -
    118E  ILE*     3.6    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 89 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ILE*     3.7    44.0    -      -       +      +
     40E  MET*     4.7     2.5    -      -       +      -
     41E  ILE*     4.5     7.0    -      -       +      -
     85E  GLU      3.1    13.8    +      -       -      +
     86E  ALA*     3.6     8.5    -      -       -      +
     88E  ALA*     1.3    73.0    -      -       -      +
     90E  TYR*     1.3    66.5    +      -       -      +
     92E  TYR*     3.2     6.0    +      -       +      +
     93E  ILE*     3.0    50.6    +      -       +      +
    118E  ILE*     4.9     4.6    -      -       +      +
    121E  GLU*     3.9    37.0    -      -       +      +
    122E  ILE*     4.2    15.9    -      -       +      +
    125E  LYS*     5.0     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 90 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  LEU*     4.1    12.1    -      -       +      -
     40E  MET*     3.6    43.7    -      -       +      +
     45E  TYR*     5.8     1.3    -      +       -      -
     48E  ALA*     4.7     3.6    -      -       +      -
     49E  ASP*     2.7    28.4    +      -       -      -
     52E  LYS*     3.4    43.8    +      -       +      +
     86E  ALA      2.9    14.9    +      -       -      +
     87E  LEU*     3.2    12.3    +      -       -      +
     89E  LEU*     1.3    77.0    -      -       -      +
     91E  TYR*     1.3    77.7    +      +       -      +
     94E  LYS*     2.9    72.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 91 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52E  LYS*     3.4    30.1    +      -       -      -
     87E  LEU*     2.9    38.0    +      -       +      +
     90E  TYR*     1.3    93.4    -      +       -      +
     92E  TYR*     1.3    61.5    +      -       -      +
     94E  LYS*     4.6     1.1    -      -       +      -
     95E  GLU*     2.9    50.7    +      -       +      +
     96E  ASN      3.1     6.4    +      -       -      -
     97E  ARG*     3.1    46.2    +      -       +      +
     99E  PRO*     4.0    25.4    -      -       +      -
    103E  GLU*     4.3    12.3    +      -       +      +
    104E  LEU*     5.1     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 92 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88E  ALA      2.8    18.5    +      -       -      +
     89E  LEU*     3.2    10.0    +      -       +      +
     91E  TYR*     1.3    77.5    -      -       -      +
     93E  ILE*     1.3    64.6    +      -       +      +
     96E  ASN*     3.1    31.5    +      -       -      +
     97E  ARG*     3.1    15.4    +      -       -      +
     98E  ILE*     4.2     9.0    -      -       +      -
    122E  ILE*     4.0    34.3    -      -       +      +
    125E  LYS*     5.9     0.7    -      -       +      -
    137E  TYR*     3.6    26.4    +      +       -      -
    140E  LYS*     4.2     5.7    +      -       -      +
    141E  ALA*     3.6    16.6    +      -       -      +
    144E  ASP*     2.6    37.3    +      -       +      +
      1F  MET*     3.9    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 93 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40E  MET*     3.8    34.8    -      -       +      +
     41E  ILE*     4.7     0.7    -      -       -      +
     45E  TYR*     3.8    23.3    -      -       +      +
     89E  LEU*     3.0    46.5    +      -       +      +
     92E  TYR*     1.3    81.8    -      -       +      +
     94E  LYS*     1.3    63.5    +      -       -      +
     96E  ASN*     4.5     1.4    +      -       -      +
    125E  LYS*     4.0    30.3    -      -       +      -
    137E  TYR*     4.0    19.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 94 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40E  MET*     4.5     8.1    -      -       +      -
     45E  TYR*     5.5     9.9    -      -       +      -
     49E  ASP*     5.1     2.5    +      -       -      -
     90E  TYR*     2.9    56.0    +      -       +      +
     91E  TYR*     4.6     1.5    -      -       -      +
     93E  ILE*     1.3    80.4    -      -       -      +
     95E  GLU*     1.3    82.0    +      -       +      +
     96E  ASN      3.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 95 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91E  TYR*     2.9    31.0    +      -       +      +
     94E  LYS*     1.3   102.7    +      -       +      +
     96E  ASN*     1.3    72.5    +      -       -      +
     97E  ARG*     2.8    45.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 96 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91E  TYR      3.1     2.6    +      -       -      -
     92E  TYR*     3.1    25.0    +      -       -      +
     93E  ILE      4.5     1.0    +      -       -      +
     94E  LYS      3.7     1.4    -      -       -      -
     95E  GLU*     1.3    79.9    -      -       -      +
     97E  ARG*     1.3    58.0    +      -       -      +
    140E  LYS*     2.6    38.6    +      -       -      +
    144E  ASP*     4.2     2.4    -      -       -      +
      1F  MET*     6.1     1.2    -      -       -      +
----------------------------------------------------------
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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