Contacts of the helix formed by residues 119 - 142 (chain F) in PDB entry 5K58


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 ASP 119 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29E  SER*     2.9    31.1    +      -       -      -
     30E  GLN*     2.7    26.2    +      -       -      +
    114F  LEU      5.7     1.6    -      -       -      -
    117F  GLU      4.5     2.2    -      -       -      +
    118F  GLN*     1.3    69.9    -      -       -      +
    120F  ARG*     1.3    62.2    +      -       -      +
    121F  LEU      2.9     7.8    +      -       -      -
    122F  GLN*     3.2    18.4    +      -       +      +
    123F  GLY*     3.4     8.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 120 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56F  THR*     3.4    22.0    -      -       +      +
     57F  ARG*     4.5    13.7    -      -       -      +
     60F  ASP*     2.3    38.9    +      -       -      -
    118F  GLN*     3.1     5.8    +      -       +      -
    119F  ASP*     1.3    77.7    -      -       -      +
    121F  LEU*     1.3    69.7    +      -       +      +
    123F  GLY*     3.6     3.2    +      -       -      +
    124F  ARG*     3.2    29.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 121 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56F  THR*     3.6    26.2    -      -       +      +
     59F  PHE*     3.6    13.2    -      -       +      -
     60F  ASP*     3.2    24.7    -      -       -      +
     63F  ILE*     3.7    14.3    -      -       +      +
    114F  LEU*     3.6    12.8    -      -       +      -
    117F  GLU*     3.0    39.9    -      -       +      +
    118F  GLN*     3.2    26.7    -      -       +      +
    119F  ASP      2.9     0.6    -      -       -      -
    120F  ARG*     1.3    84.8    -      -       +      +
    122F  GLN*     1.3    65.4    +      -       -      +
    123F  GLY      3.2     0.2    -      -       -      -
    124F  ARG*     3.2     8.6    +      -       -      +
    125F  ILE*     3.0    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 122 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112E  HIS*     5.5     0.9    +      -       -      -
    175E  ARG*     3.5    33.6    -      -       +      +
    177E  GLU*     5.5     5.2    -      -       -      +
    109F  LEU      5.2     0.2    -      -       -      +
    110F  THR      4.8     1.0    -      -       -      +
    111F  GLY*     3.6    25.6    -      -       -      -
    114F  LEU*     3.5    19.9    +      -       +      +
    118F  GLN      4.6     0.4    +      -       -      -
    119F  ASP*     3.2    12.3    +      -       +      +
    121F  LEU*     1.3    77.4    -      -       -      +
    123F  GLY*     1.3    51.7    +      -       -      +
    125F  ILE*     2.8    12.2    +      -       -      +
    126F  ASN*     2.5    68.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 123 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119F  ASP      3.4     9.3    +      -       -      -
    120F  ARG*     3.9     4.5    -      -       -      -
    121F  LEU      3.2     0.4    -      -       -      -
    122F  GLN*     1.3    79.0    -      -       -      +
    124F  ARG*     1.3    56.1    +      -       -      +
    126F  ASN*     3.4    16.7    +      -       -      +
    127F  GLN*     3.2    35.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 124 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60F  ASP*     2.8    40.1    +      -       -      +
     63F  ILE*     3.7    20.9    -      -       +      +
     64F  GLU*     3.8    30.7    +      -       -      +
     67F  GLU*     3.4    29.1    +      -       -      +
    120F  ARG*     3.2    19.6    +      -       -      +
    121F  LEU*     3.5     9.4    -      -       -      +
    122F  GLN      3.1     0.6    -      -       -      -
    123F  GLY*     1.3    76.3    -      -       -      +
    125F  ILE*     1.3    62.4    +      -       -      +
    127F  GLN*     3.7    24.8    -      -       -      +
    128F  LEU*     3.6    16.5    +      -       -      +
    131F  ARG*     4.7     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 125 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63F  ILE*     3.8    26.0    -      -       +      -
     66F  ILE*     5.0     2.0    -      -       +      -
    108F  ILE*     4.2    17.0    -      -       +      +
    109F  LEU*     3.8    30.7    -      -       +      +
    114F  LEU*     3.7    16.8    -      -       +      -
    121F  LEU      3.0    16.9    +      -       -      +
    122F  GLN*     2.8    22.0    +      -       -      +
    124F  ARG*     1.3    76.9    -      -       -      +
    126F  ASN*     1.3    65.3    +      -       -      +
    127F  GLN      3.2     1.6    -      -       -      -
    128F  LEU*     3.2    23.7    +      -       +      +
    129F  PHE*     3.2    30.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 126 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175E  ARG*     2.7    48.2    +      -       -      +
    176E  SER*     4.6     4.2    -      -       -      +
    177E  GLU*     6.3     0.4    -      -       -      +
    122F  GLN*     2.5    47.1    +      -       -      +
    123F  GLY*     3.4    16.0    -      -       -      +
    125F  ILE*     1.3    71.9    -      -       -      +
    127F  GLN*     1.3    51.4    +      -       +      +
    129F  PHE*     3.2     5.6    +      -       -      +
    130F  GLU*     2.8    43.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 127 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123F  GLY      3.2    18.3    +      -       -      +
    124F  ARG*     3.7    26.5    -      -       -      +
    125F  ILE      3.2     0.2    -      -       -      -
    126F  ASN*     1.3    74.2    -      -       +      +
    128F  LEU*     1.3    56.4    +      -       -      +
    130F  GLU*     2.8    12.4    +      -       +      +
    131F  ARG*     2.8    68.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 128 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63F  ILE*     4.4     4.0    -      -       +      +
     66F  ILE*     4.1    27.8    -      -       +      +
     67F  GLU*     3.7    45.8    -      -       +      +
     70F  LEU*     5.0     6.7    -      -       +      -
     71F  ILE*     4.3    14.4    -      -       +      -
    109F  LEU*     4.8     7.2    -      -       +      -
    124F  ARG      3.6     5.4    +      -       -      +
    125F  ILE*     3.2    34.9    +      -       +      +
    127F  GLN*     1.3    78.8    -      -       -      +
    129F  PHE*     1.3    60.2    +      -       +      +
    131F  ARG*     3.2    12.9    +      -       -      +
    132F  ILE*     3.1    36.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 129 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175E  ARG*     3.5    38.6    -      -       -      +
     95F  LEU*     5.6     2.2    -      -       +      -
    109F  LEU*     3.9    36.6    -      -       +      -
    110F  THR*     6.2     0.2    -      -       -      -
    125F  ILE*     3.2    26.8    +      -       +      -
    126F  ASN      3.2     7.9    +      -       -      +
    127F  GLN      3.2     0.2    -      -       -      -
    128F  LEU*     1.3    77.5    -      -       +      +
    130F  GLU*     1.3    69.0    +      -       -      +
    132F  ILE*     3.4    13.4    -      -       +      +
    133F  GLU*     3.0    26.5    +      -       -      +
    163F  LEU*     3.7    29.5    -      -       +      +
    167F  GLU*     3.8    28.3    -      -       +      -
    170F  LEU*     4.9    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 130 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172E  ARG*     3.8    22.2    +      -       -      -
    175E  ARG*     4.7     5.2    +      -       -      -
    126F  ASN*     2.8    30.8    +      -       +      +
    127F  GLN*     2.8    14.6    +      -       +      +
    129F  PHE*     1.3    77.8    -      -       -      +
    131F  ARG*     1.3    64.0    +      -       +      +
    133F  GLU*     3.8    13.0    -      -       -      +
    134F  ALA*     3.3    21.8    +      -       -      +
    137F  ARG*     5.4     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 131 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67F  GLU*     4.7    12.2    +      -       -      +
     71F  ILE*     3.7    27.7    -      -       +      +
    124F  ARG      4.7     1.8    +      -       -      -
    127F  GLN*     2.8    42.4    +      -       -      +
    128F  LEU*     3.2    40.4    -      -       -      +
    130F  GLU*     1.3    77.9    -      -       +      +
    132F  ILE*     1.3    59.8    +      -       -      +
    134F  ALA*     3.2     6.3    +      -       -      +
    135F  GLN*     2.8    37.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 132 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70F  LEU*     5.4     5.4    -      -       +      -
     71F  ILE*     3.6    19.1    -      -       +      +
     74F  ILE*     3.4    28.7    -      -       +      -
     91F  ILE*     6.3     0.2    -      -       +      -
     95F  LEU*     5.0    15.9    -      -       +      -
    128F  LEU*     3.1    22.2    -      -       +      +
    129F  PHE*     3.4    27.1    -      -       +      +
    131F  ARG*     1.3    74.9    -      -       -      +
    133F  GLU*     1.3    58.3    +      -       -      +
    135F  GLN*     3.6     7.3    -      -       -      +
    136F  LEU*     2.9    40.2    +      -       +      +
    163F  LEU*     3.5    34.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 133 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172E  ARG*     2.8    38.7    +      -       -      -
    180E  TYR*     4.9     0.7    +      -       -      -
    129F  PHE      3.0    18.7    +      -       -      +
    130F  GLU*     3.8    14.2    -      -       -      +
    131F  ARG      3.1     0.2    -      -       -      -
    132F  ILE*     1.3    78.8    -      -       -      +
    134F  ALA*     1.3    58.8    +      -       -      +
    136F  LEU*     3.2     9.9    +      -       -      +
    137F  ARG*     3.0    50.7    +      -       +      +
    156F  THR*     5.0     2.0    -      -       -      -
    159F  ALA*     4.4     4.3    -      -       +      -
    160F  SER*     3.2    32.0    -      -       -      +
    163F  LEU*     4.3    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 134 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130F  GLU      3.3    13.2    +      -       -      +
    131F  ARG*     3.2     5.9    +      -       -      +
    133F  GLU*     1.3    75.1    -      -       -      +
    135F  GLN*     1.3    56.1    +      -       -      +
    137F  ARG*     3.0    33.5    +      -       -      +
    138F  GLN*     2.7    32.4    +      -       -      +
    141F  ARG*     4.9     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 135 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71F  ILE*     3.9    19.4    -      -       -      +
     74F  ILE*     4.5    20.6    -      -       +      +
     75F  ASN*     2.9    34.5    +      -       -      +
     78F  LEU*     5.3     7.7    -      -       +      +
     91F  ILE*     5.3     2.0    -      -       -      +
    131F  ARG*     2.8    32.2    +      -       -      +
    132F  ILE*     3.6     9.6    -      -       -      +
    134F  ALA*     1.3    75.3    -      -       -      +
    136F  LEU*     1.3    64.0    +      -       +      +
    138F  GLN*     3.0    25.8    +      -       +      +
    139F  VAL*     3.2    13.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 136 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74F  ILE*     5.9     0.9    -      -       +      -
     88F  LEU*     4.5    13.8    -      -       +      +
     91F  ILE*     3.4    37.9    -      -       +      -
     92F  VAL*     6.2     1.6    -      -       +      -
     95F  LEU*     6.1     2.7    -      -       +      -
    132F  ILE*     2.9    31.0    +      -       +      +
    133F  GLU*     3.3    12.1    -      -       -      +
    135F  GLN*     1.3    76.8    -      -       +      +
    137F  ARG*     1.3    60.4    +      -       -      +
    139F  VAL*     3.3     8.9    +      -       -      +
    140F  MET*     3.1    29.2    +      -       -      +
    159F  ALA*     3.4    35.7    -      -       +      +
    162F  ILE*     4.2    16.2    -      -       +      -
    163F  LEU*     4.6    11.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 137 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130F  GLU      5.4     1.2    +      -       -      -
    133F  GLU*     3.0    36.4    +      -       -      +
    134F  ALA*     3.0    32.7    +      -       -      +
    136F  LEU*     1.3    75.8    -      -       -      +
    138F  GLN*     1.3    57.2    +      -       -      +
    139F  VAL      3.4     0.2    -      -       -      -
    140F  MET*     3.9     8.4    -      -       -      +
    141F  ARG*     2.5    63.0    +      -       -      +
    155F  GLU*     3.9     6.1    -      -       +      +
    156F  THR*     3.7    46.8    +      -       -      +
    159F  ALA*     3.8    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 138 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78F  LEU*     4.0    25.7    -      -       +      +
    134F  ALA      2.7    11.6    +      -       -      +
    135F  GLN*     3.0    19.5    +      -       +      +
    137F  ARG*     1.3    78.6    -      -       -      +
    139F  VAL*     1.3    59.8    +      -       -      +
    141F  ARG*     3.9     9.7    +      -       -      +
    142F  GLU*     3.3    50.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 139 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78F  LEU*     3.7    33.0    -      -       +      -
     84F  THR*     4.1    23.9    +      -       +      +
     87F  ARG*     3.9    32.5    +      -       +      +
     88F  LEU*     3.8    22.0    -      -       +      -
     91F  ILE*     4.1    14.6    -      -       +      -
    135F  GLN      3.2    12.4    +      -       -      +
    136F  LEU      3.3     7.1    +      -       -      +
    138F  GLN*     1.3    75.8    -      -       -      +
    140F  MET*     1.3    64.8    +      -       -      +
    142F  GLU*     3.6    15.8    +      -       -      +
    143F  LYS      4.1     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 140 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88F  LEU*     4.4    24.5    -      -       +      -
    136F  LEU*     3.1    13.9    +      -       +      +
    137F  ARG*     4.0     6.1    -      -       -      +
    138F  GLN      3.4     0.2    -      -       -      -
    139F  VAL*     1.3    77.1    -      -       -      +
    141F  ARG*     1.3    64.9    +      -       -      +
    142F  GLU      3.4     0.2    +      -       -      -
    143F  LYS*     3.5    16.5    +      -       -      +
    150F  GLY*     5.8     1.2    -      -       -      -
    151F  TYR*     3.9    24.8    +      -       +      -
    155F  GLU*     3.5    22.2    -      -       +      +
    158F  LEU*     2.9    56.1    -      -       +      +
    159F  ALA*     3.1    27.6    -      -       +      +
    162F  ILE*     4.5     8.5    -      -       +      -
    197F  LEU*     5.1     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 141 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134F  ALA      5.5     0.4    -      -       -      -
    137F  ARG*     2.5    69.3    +      -       -      +
    138F  GLN*     4.1    12.3    -      -       -      +
    140F  MET*     1.3    79.2    -      -       -      +
    142F  GLU*     1.3    61.0    +      -       +      +
    143F  LYS      2.8     7.5    +      -       -      -
    144F  ARG*     3.5    26.2    +      -       -      +
    145F  MET*     3.7    19.8    -      -       +      +
    155F  GLU*     3.7    28.7    +      -       +      +
    156F  THR*     5.5     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 142 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84F  THR*     4.3     2.5    +      -       -      -
     87F  ARG*     3.0    27.2    +      -       -      +
    138F  GLN*     3.3    38.4    +      -       -      +
    139F  VAL      3.6     9.7    +      -       -      +
    140F  MET      3.2     1.4    -      -       -      -
    141F  ARG*     1.3    76.4    -      -       +      +
    143F  LYS*     1.3    58.1    +      -       -      +
    144F  ARG      3.6     0.4    -      -       -      -
    145F  MET*     4.5    21.5    -      -       +      -
    146F  ARG*     3.0    53.0    +      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il