Contacts of the helix formed by residues 548 - 578 (chain H) in PDB entry 1GO4


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 ASN 548 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64D  TYR*     3.9     7.6    -      -       +      +
    152D  ASP*     3.5    32.6    +      -       -      +
    544H  HIS*     3.8     9.1    -      -       -      -
    545H  MET      2.6    24.1    +      -       -      +
    546H  SER      3.7     3.0    +      -       -      -
    547H  LEU*     1.3    74.8    -      -       -      +
    549H  PRO*     1.3    80.8    -      -       +      +
    550H  THR*     3.3    12.8    +      -       -      +
    551H  SER*     2.8    40.5    +      -       -      -
    552H  VAL*     2.7    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 549 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38D  TYR*     4.0    12.3    -      -       -      +
     61D  LEU*     4.8     2.5    -      -       +      -
     64D  TYR*     3.3    33.9    -      -       +      +
    150D  SER*     3.4     8.7    -      -       -      +
    151D  PHE*     3.1    44.0    -      -       +      +
    548H  ASN*     1.3    89.3    -      -       +      +
    550H  THR*     1.3    54.0    +      -       -      +
    552H  VAL*     3.0     6.0    +      -       +      +
    553H  ALA*     2.7    35.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 550 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87D  VAL      4.8     0.2    +      -       -      -
     89D  SER*     4.0    12.4    +      -       -      +
    150D  SER*     3.0    14.7    +      -       -      +
    151D  PHE*     2.8    37.0    +      -       -      -
    152D  ASP*     3.6     6.9    +      -       +      +
    548H  ASN*     3.3     8.4    +      -       -      -
    549H  PRO*     1.3    77.3    -      -       -      +
    551H  SER*     1.3    64.4    +      -       -      +
    553H  ALA*     3.9     1.2    -      -       -      +
    554H  ARG*     3.0    58.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 551 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    546H  SER      3.5    12.4    +      -       -      -
    547H  LEU*     4.6     1.7    -      -       -      -
    548H  ASN*     2.8    42.9    +      -       -      -
    550H  THR*     1.3    76.7    -      -       -      +
    552H  VAL*     1.3    64.0    +      -       -      +
    554H  ARG*     3.2    10.1    +      -       -      +
    555H  GLN*     3.1    37.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 552 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60D  GLU*     6.6     0.4    -      -       +      -
    547H  LEU*     5.2     4.0    -      -       +      -
    548H  ASN      2.7    32.4    +      -       -      +
    549H  PRO*     3.5     8.1    -      -       +      +
    551H  SER*     1.3    68.0    -      -       -      +
    553H  ALA*     1.3    57.3    +      -       -      +
    554H  ARG      3.0     1.8    -      -       -      -
    555H  GLN*     2.7    36.0    +      -       +      +
    556H  ARG*     2.9    33.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 553 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91D  ILE*     3.9    23.6    -      -       +      +
    150D  SER*     4.0    20.4    -      -       -      +
    549H  PRO      2.7    19.1    +      -       -      +
    550H  THR      3.9     3.8    -      -       -      +
    552H  VAL*     1.3    73.1    -      -       -      +
    554H  ARG*     1.3    60.4    -      -       -      +
    556H  ARG*     3.5    26.9    -      -       -      +
    557H  LEU*     3.7     5.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 554 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89D  SER*     4.2     4.8    +      -       -      -
     90D  ASN      4.0     5.7    +      -       -      -
     91D  ILE*     3.9    25.3    +      -       +      +
     92D  GLU      5.6     0.9    -      -       -      -
     93D  SER      4.5     0.6    +      -       -      -
     94D  GLY*     2.7    42.9    +      -       -      -
    150D  SER*     5.6     1.2    -      -       -      -
    550H  THR*     3.0    41.3    +      -       -      +
    551H  SER*     3.3    13.0    -      -       -      +
    552H  VAL      3.0     0.2    -      -       -      -
    553H  ALA*     1.3    75.0    -      -       -      +
    555H  GLN*     1.3    61.1    +      -       -      +
    557H  LEU*     3.6     7.5    -      -       +      +
    558H  ARG*     2.8    50.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 555 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    551H  SER*     3.2    31.4    +      -       -      +
    552H  VAL*     2.7    17.8    +      -       +      +
    554H  ARG*     1.3    78.5    -      -       -      +
    556H  ARG*     1.3    56.1    +      -       -      +
    557H  LEU      3.0     0.7    +      -       -      -
    558H  ARG*     3.3    23.6    +      -       -      +
    559H  GLU*     2.9    45.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 556 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    552H  VAL*     2.9    37.7    +      -       +      +
    553H  ALA*     3.5    12.3    -      -       -      +
    555H  GLN*     1.3    72.7    -      -       -      +
    557H  LEU*     1.3    56.6    +      -       -      +
    559H  GLU*     3.4    16.1    +      -       -      +
    560H  ASP*     4.0    23.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 557 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91D  ILE*     3.9    15.0    -      -       +      +
     92D  GLU*     3.9    46.0    -      -       +      +
    553H  ALA      3.7     8.1    -      -       -      +
    554H  ARG*     3.6    11.9    -      -       +      +
    556H  ARG*     1.3    75.1    -      -       -      +
    558H  ARG*     1.3    64.6    -      -       +      +
    559H  GLU      3.3     1.1    -      -       -      +
    560H  ASP*     3.4     5.7    +      -       -      +
    561H  HIS*     2.9    67.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 558 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    554H  ARG*     2.8    45.1    +      -       -      +
    555H  GLN*     3.3    23.5    -      -       -      +
    557H  LEU*     1.3    86.1    -      -       +      +
    559H  GLU*     1.3    64.1    +      -       +      +
    561H  HIS*     3.3     5.0    +      -       -      +
    562H  SER*     3.1    24.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 559 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    555H  GLN*     2.9    36.4    +      -       +      +
    556H  ARG*     3.4    18.7    +      -       +      +
    558H  ARG*     1.3    75.9    -      -       +      +
    560H  ASP*     1.3    52.2    +      -       -      +
    562H  SER*     2.7    12.3    +      -       -      -
    563H  GLN*     2.6    52.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 560 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    556H  ARG*     4.0    26.2    -      -       -      +
    557H  LEU*     3.4    11.3    +      -       -      +
    559H  GLU*     1.3    73.3    -      -       -      +
    561H  HIS*     1.3    66.4    +      -       +      +
    563H  GLN*     3.5    21.2    +      -       -      +
    564H  LEU*     2.8    34.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 561 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92D  GLU*     5.8     5.5    +      -       +      -
    561G  HIS*     5.4    12.8    -      +       -      -
    564G  LEU*     5.7     9.0    -      -       +      -
    557H  LEU*     2.9    49.7    +      -       +      +
    558H  ARG*     3.8     5.6    -      -       -      +
    560H  ASP*     1.3    79.7    -      -       +      +
    562H  SER*     1.3    56.8    +      -       -      +
    564H  LEU*     4.3    13.4    -      -       +      +
    565H  GLN*     3.4    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 562 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    558H  ARG      3.1    13.7    +      -       -      -
    559H  GLU*     2.7    16.7    +      -       -      -
    561H  HIS*     1.3    78.9    -      -       -      +
    563H  GLN*     1.3    57.4    +      -       -      -
    565H  GLN*     3.4     6.1    +      -       -      +
    566H  ALA*     2.9    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 563 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    559H  GLU*     2.6    27.4    +      -       +      +
    560H  ASP*     3.5    35.9    +      -       -      +
    562H  SER*     1.3    70.8    -      -       -      +
    564H  LEU*     1.3    55.0    +      -       -      +
    566H  ALA*     3.1     6.9    +      -       -      +
    567H  GLU*     2.7    55.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 564 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    564G  LEU*     5.8     3.4    -      -       +      -
    568G  CYS*     4.2    25.4    -      -       -      -
    571G  LEU*     5.6     3.4    -      -       +      -
    560H  ASP      2.8    17.6    +      -       -      +
    561H  HIS*     4.3    12.8    -      -       +      +
    563H  GLN*     1.3    77.7    -      -       -      +
    565H  GLN*     1.3    64.6    +      -       -      +
    567H  GLU*     3.3     6.0    +      -       +      +
    568H  CYS*     3.0    43.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 565 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    561H  HIS      3.4    19.8    +      -       -      +
    562H  SER*     3.4     7.1    +      -       -      +
    563H  GLN      3.3     0.2    -      -       -      -
    564H  LEU*     1.3    82.6    -      -       -      +
    566H  ALA*     1.3    62.7    +      -       -      +
    568H  CYS*     3.5     6.0    +      -       -      +
    569H  GLU*     3.3    19.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 566 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    562H  SER      2.9    18.4    +      -       -      +
    563H  GLN*     3.4     7.2    -      -       -      +
    565H  GLN*     1.3    75.5    -      -       -      +
    567H  GLU*     1.3    56.1    +      -       +      +
    569H  GLU*     2.9     9.7    +      -       -      +
    570H  ARG*     2.7    41.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 567 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    563H  GLN*     2.7    38.6    +      -       -      +
    564H  LEU*     3.9     5.8    -      -       +      +
    566H  ALA*     1.3    72.9    -      -       +      +
    568H  CYS*     1.3    58.3    +      -       -      +
    570H  ARG*     4.0    26.0    -      -       -      +
    571H  LEU*     2.8    34.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 568 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571G  LEU*     4.3    22.0    -      -       -      -
    564H  LEU*     3.0    43.0    +      -       -      +
    565H  GLN*     3.7     7.2    -      -       -      +
    567H  GLU*     1.3    75.7    -      -       -      +
    569H  GLU*     1.3    57.4    +      -       -      +
    571H  LEU*     4.2     4.0    -      -       -      +
    572H  ARG*     2.9    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 569 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    565H  GLN      3.3     8.8    +      -       -      +
    566H  ALA*     2.9    10.8    +      -       -      +
    568H  CYS*     1.3    78.7    -      -       -      +
    570H  ARG*     1.3    60.6    +      -       -      +
    572H  ARG*     3.2    35.1    +      -       -      +
    573H  GLY*     2.8    29.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 570 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    566H  ALA*     2.7    26.5    +      -       -      +
    567H  GLU*     3.6    23.4    -      -       -      +
    569H  GLU*     1.3    71.8    -      -       -      +
    571H  LEU*     1.3    66.0    +      -       -      +
    573H  GLY*     2.8    13.7    +      -       -      -
    574H  LEU*     3.1    27.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 571 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571G  LEU*     6.2     4.3    -      -       +      -
    575G  LEU*     4.9    23.1    -      -       +      -
    567H  GLU      2.8    20.3    +      -       -      +
    568H  CYS*     4.2     3.8    -      -       -      +
    570H  ARG*     1.3    75.0    -      -       -      +
    572H  ARG*     1.3    63.0    +      -       -      +
    574H  LEU*     3.2    18.6    +      -       +      -
    575H  LEU*     3.0    47.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 572 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    568H  CYS      2.9    21.7    +      -       -      +
    569H  GLU*     3.3    32.9    +      -       -      +
    570H  ARG      3.1     0.2    -      -       -      -
    571H  LEU*     1.3    78.2    -      -       -      +
    573H  GLY*     1.3    57.1    +      -       -      +
    575H  LEU*     3.4     9.2    +      -       -      +
    576H  ARG*     2.9    52.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 573 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    569H  GLU*     2.8    14.6    +      -       -      -
    570H  ARG*     2.8     9.8    +      -       -      -
    572H  ARG*     1.3    76.7    -      -       -      +
    574H  LEU*     1.3    56.3    +      -       -      -
    576H  ARG*     2.9     8.9    +      -       -      +
    577H  ALA*     2.8    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 574 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    570H  ARG*     3.1    25.5    +      -       +      +
    571H  LEU*     3.6    20.6    -      -       +      +
    573H  GLY*     1.3    72.7    -      -       -      +
    575H  LEU*     1.3    63.9    +      -       +      +
    577H  ALA*     3.0    24.7    +      -       +      +
    578H  MET*     3.3    24.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 575 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    584G  VAL*     6.3     2.5    -      -       +      -
    571H  LEU*     3.0    45.8    +      -       +      +
    572H  ARG*     3.7     7.6    -      -       -      +
    574H  LEU*     1.3    76.8    -      -       +      +
    576H  ARG*     1.3    57.9    +      -       -      +
    578H  MET*     2.8    45.0    -      -       +      +
    579H  GLU      4.4     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 576 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    572H  ARG*     2.9    39.5    +      -       +      +
    573H  GLY*     3.3    11.9    -      -       -      +
    575H  LEU*     1.3    74.7    -      -       -      +
    577H  ALA*     1.3    71.1    +      -       -      +
    578H  MET      3.3     0.5    +      -       -      -
    579H  GLU*     3.4    14.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 577 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    573H  GLY      2.8    11.7    +      -       -      +
    574H  LEU*     3.0    17.3    -      -       +      +
    576H  ARG*     1.3    76.7    -      -       -      +
    578H  MET*     1.3    53.6    +      -       +      +
    579H  GLU*     2.6    18.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 578 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    574H  LEU*     3.3    28.7    -      -       +      +
    575H  LEU*     2.8    41.4    -      -       +      +
    577H  ALA*     1.3    73.7    -      -       +      +
    579H  GLU*     1.3    67.0    +      -       -      +
----------------------------------------------------------
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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