Contacts of the helix formed by residues 88 - 113 (chain A) in PDB entry 6WNX


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 PRO 88 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  MET*     4.2     3.4    -      -       +      -
     86A  GLY      3.1     8.0    -      -       -      +
     87A  PRO*     1.4    90.0    -      -       +      +
     89A  ASN*     1.3    65.5    +      -       -      +
     90A  SER*     3.3    23.1    -      -       -      +
     91A  PHE*     3.2    17.4    +      -       +      +
     92A  TYR*     3.3     9.5    -      -       -      -
    126D  ASN*     3.5    26.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  GLU*     5.2     0.8    +      -       -      -
     45A  ILE*     4.1     2.7    +      -       -      +
     46A  SER*     3.2    45.9    -      -       -      +
     49A  MET*     3.5    38.3    -      -       +      +
     50A  LEU      3.6     0.2    +      -       -      -
     51A  TRP*     3.6    38.0    +      -       -      +
     52A  LYS      4.3     2.1    +      -       -      -
     88A  PRO*     1.3    70.4    -      -       -      +
     90A  SER*     1.3    66.5    +      -       -      +
     91A  PHE      2.8     2.4    +      -       -      -
     92A  TYR*     2.8    17.0    +      -       -      -
     93A  ARG*     2.9    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  PRO*     3.3    11.5    -      -       -      +
     89A  ASN*     1.3    78.5    -      -       -      +
     91A  PHE*     1.3    54.3    +      -       -      +
     93A  ARG*     3.5    13.3    -      -       -      +
     94A  SER*     2.7    36.2    +      -       -      -
    126D  ASN*     3.2    24.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  TRP*     5.3     0.9    -      -       +      -
     77A  TYR*     3.9    41.7    -      +       +      -
     87A  PRO*     3.8    13.2    -      -       +      -
     88A  PRO*     3.2    24.4    +      -       +      +
     89A  ASN      2.8     5.1    +      -       -      -
     90A  SER*     1.3    75.4    +      -       -      +
     92A  TYR*     1.3    90.9    -      +       -      +
     94A  SER*     3.2     8.9    +      -       -      -
     95A  LEU*     3.0    49.4    +      -       +      +
    125D  GLU*     5.5    11.2    -      -       +      -
    126D  ASN*     5.1     5.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  MET*     4.7     2.9    -      -       -      -
     51A  TRP*     3.9     6.3    -      -       +      +
     52A  LYS*     3.6    60.4    -      -       +      +
     55A  ILE*     3.6    16.3    -      -       +      +
     77A  TYR*     2.7    34.1    +      -       +      -
     78A  LEU*     4.0    10.5    -      -       +      -
     87A  PRO*     3.3    39.4    +      -       +      +
     88A  PRO      3.3    20.0    -      -       -      -
     89A  ASN*     2.8    12.4    +      -       -      +
     91A  PHE*     1.3    93.9    -      +       -      +
     93A  ARG*     1.3    65.9    +      -       -      +
     95A  LEU*     4.1     6.3    -      -       +      -
     96A  TYR*     3.3    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  GLU*     3.1    28.1    +      -       -      -
     42A  GLN*     5.4     5.7    -      -       -      +
     51A  TRP*     3.6    40.3    -      -       +      +
     89A  ASN*     2.9    17.1    +      -       -      +
     90A  SER*     3.5    15.3    -      -       -      +
     92A  TYR*     1.3    79.0    -      -       -      +
     94A  SER*     1.3    61.2    +      -       -      +
     96A  TYR*     3.9     2.6    +      -       -      +
     97A  PRO*     3.2    18.2    -      -       -      +
    135B  VAL*     3.7    12.9    -      -       -      +
    138B  GLU*     2.6    40.1    +      -       -      +
    139B  ASN*     2.7    29.9    +      -       -      -
    141B  TRP*     5.6     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  SER*     2.7    20.0    +      -       -      -
     91A  PHE*     3.2    10.0    +      -       -      -
     93A  ARG*     1.3    76.2    -      -       -      +
     95A  LEU*     1.3    61.8    +      -       -      +
     97A  PRO*     3.4    16.2    -      -       -      +
     98A  LYS*     3.4    19.1    -      -       -      +
    125D  GLU*     3.2    27.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ILE*     4.0    17.0    -      -       +      -
     74A  TRP*     4.1    40.2    -      -       +      +
     77A  TYR*     5.8     0.4    -      -       +      -
     78A  LEU*     5.9     0.9    -      -       +      -
     91A  PHE*     3.0    39.8    +      -       +      +
     92A  TYR*     3.6    10.1    -      -       +      +
     93A  ARG      3.3     0.2    -      -       -      -
     94A  SER*     1.3    76.7    -      -       -      +
     96A  TYR*     1.3    67.7    +      -       -      +
     98A  LYS*     2.7    31.7    +      -       +      +
     99A  ILE*     2.9    31.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  ALA*     3.5    26.7    -      -       +      +
     51A  TRP*     3.8    27.4    -      +       +      -
     54A  LEU*     3.4    23.1    -      -       +      +
     55A  ILE*     3.7    20.8    -      -       +      +
     58A  MET*     3.1    31.2    -      -       +      +
     65A  TRP*     3.5    23.8    -      +       -      -
     92A  TYR      3.3     7.9    +      -       -      +
     93A  ARG      4.2     0.2    -      -       -      +
     95A  LEU*     1.3    79.7    -      -       -      +
     97A  PRO*     1.3    70.4    -      -       +      +
     99A  ILE*     3.1    12.0    +      -       -      +
    100A  ILE*     3.1    38.3    +      -       +      +
    141B  TRP*     3.6    16.8    -      +       -      -
----------------------------------------------------------
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Residues in contact with PRO 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  ARG      3.2    15.3    -      -       -      +
     94A  SER*     3.4    17.9    -      -       -      +
     96A  TYR*     1.3    96.8    -      -       +      +
     98A  LYS*     1.3    54.6    +      -       +      +
    100A  ILE*     3.4     9.3    +      -       +      +
    101A  GLN*     2.9    28.2    +      -       -      +
    138B  GLU      5.4     1.3    -      -       -      +
    141B  TRP*     3.6    52.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  SER*     3.4    21.1    -      -       -      +
     95A  LEU*     2.7    27.1    +      -       +      +
     97A  PRO*     1.3    71.5    -      -       +      +
     99A  ILE*     1.3    56.4    +      -       -      -
    101A  GLN*     3.7     7.7    -      -       -      +
    102A  ASP*     2.9    27.5    +      -       -      +
    125D  GLU*     3.2    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ILE*     4.4     8.7    -      -       +      -
     65A  TRP*     3.6    42.2    -      -       +      -
     68A  LEU*     4.3     7.9    -      -       +      -
     74A  TRP*     3.3    51.8    -      -       +      +
     95A  LEU*     2.9    35.0    +      -       +      +
     96A  TYR*     3.1     6.5    +      -       -      +
     98A  LYS*     1.3    74.1    -      -       -      +
    100A  ILE*     1.3    53.5    +      -       -      +
    102A  ASP*     3.1     9.4    -      -       -      +
    103A  ILE*     2.8    41.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  TRP*     3.6    27.1    -      -       +      -
     96A  TYR*     3.1    37.4    +      -       +      +
     97A  PRO*     3.4     9.2    +      -       +      +
     99A  ILE*     1.3    75.9    -      -       -      +
    101A  GLN*     1.3    52.6    +      -       -      +
    103A  ILE*     3.1    13.9    +      -       +      +
    104A  GLU*     2.8    57.0    +      -       -      +
    141B  TRP*     4.2    19.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  PRO      2.9    18.1    +      -       -      +
     98A  LYS*     3.7     8.7    -      -       -      +
     99A  ILE      3.3     0.2    -      -       -      -
    100A  ILE*     1.3    71.8    -      -       -      +
    102A  ASP*     1.3    69.5    +      -       -      +
    104A  GLU*     3.0    19.2    +      -       -      +
    105A  THR*     3.0    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  LEU*     3.8    12.8    -      -       +      +
     72A  ARG*     3.0    51.3    +      -       -      +
     74A  TRP*     5.3     1.7    +      -       -      -
     98A  LYS      2.9    16.3    +      -       -      +
     99A  ILE*     3.1    14.6    -      -       -      +
    101A  GLN*     1.3    72.1    -      -       -      +
    103A  ILE*     1.3    63.8    +      -       -      +
    105A  THR*     2.7    26.6    +      -       -      -
    106A  ILE*     3.0    19.8    +      -       -      +
    407A  LEU*     4.1     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  LEU*     4.0    26.2    -      -       +      -
     65A  TRP*     3.4    42.0    -      -       +      +
     68A  LEU*     3.6    18.8    -      -       +      -
     99A  ILE*     2.8    25.3    +      -       +      +
    100A  ILE*     3.4    13.7    -      -       +      +
    102A  ASP*     1.3    72.4    -      -       -      +
    104A  GLU*     1.3    65.2    +      -       +      +
    106A  ILE*     3.1    13.1    +      -       -      +
    107A  GLU*     3.1    37.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  ILE*     2.8    43.9    +      -       -      +
    101A  GLN*     3.0    19.4    +      -       -      +
    103A  ILE*     1.3    76.3    -      -       +      +
    105A  THR*     1.3    58.2    +      -       +      +
    107A  GLU*     3.3    12.7    +      -       -      +
    108A  SER*     2.9    28.1    +      -       -      -
    111A  ARG*     4.6     3.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  GLN*     3.0    35.7    +      -       +      +
    102A  ASP*     2.7    22.7    +      -       -      -
    104A  GLU*     1.3    71.9    -      -       -      +
    106A  ILE*     1.3    66.4    +      -       -      +
    108A  SER*     3.3     8.1    +      -       -      -
    109A  ASN*     3.0    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  LEU*     4.9     6.5    -      -       +      -
     68A  LEU*     4.0     8.7    -      -       +      -
    102A  ASP*     3.0    26.5    +      -       -      +
    103A  ILE*     3.1    14.8    +      -       -      +
    105A  THR*     1.3    76.8    +      -       -      +
    107A  GLU*     1.3    66.6    +      -       +      +
    109A  ASN*     2.9    16.0    +      -       -      +
    110A  TRP*     3.1    25.0    +      -       +      +
    342A  ARG*     5.7     0.7    -      -       -      +
    389A  GLU      3.8    21.8    -      -       -      +
    390A  PHE*     4.0    21.5    -      -       +      -
    406A  PHE*     4.0    17.9    -      -       +      +
    407A  LEU*     3.6    32.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  LEU*     4.5     1.0    -      -       -      +
    103A  ILE*     3.1    33.5    +      -       -      +
    104A  GLU*     3.7    13.3    -      -       -      +
    106A  ILE*     1.3    76.9    -      -       +      +
    108A  SER*     1.3    57.7    +      -       -      +
    110A  TRP*     3.2    10.5    +      -       -      +
    111A  ARG*     2.9    53.9    +      -       -      +
    341A  LYS*     2.9    35.8    +      -       -      -
    342A  ARG*     4.5    16.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  GLU      2.9    16.8    +      -       -      -
    105A  THR*     3.5    11.2    -      -       -      -
    106A  ILE      3.1     0.2    -      -       -      -
    107A  GLU*     1.3    76.0    -      -       -      +
    109A  ASN*     1.3    53.4    +      -       -      +
    111A  ARG*     3.2    21.8    +      -       -      +
    112A  CYS*     2.8    47.1    +      -       -      -
    114A  ARG*     3.2    19.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  THR*     3.0    26.2    +      -       -      +
    106A  ILE*     2.9    11.2    +      -       -      +
    108A  SER*     1.3    73.2    -      -       -      +
    110A  TRP*     1.3    55.7    +      -       -      +
    113A  GLY*     2.7    30.1    +      -       -      -
    114A  ARG*     2.9    49.5    +      -       -      +
    406A  PHE*     2.6    32.8    +      -       +      +
    407A  LEU      4.6     3.6    +      -       -      -
    409A  VAL*     3.4    21.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ILE*     3.1    32.4    +      -       +      +
    107A  GLU*     3.2     6.7    +      -       -      +
    109A  ASN*     1.3    76.3    -      -       -      +
    111A  ARG*     1.3    61.2    +      -       +      +
    113A  GLY*     3.3    12.1    +      -       -      -
    342A  ARG*     3.6    52.5    -      -       -      +
    344A  VAL*     4.6     1.8    -      -       +      -
    354A  VAL*     4.0    19.5    -      -       +      +
    372A  LEU*     5.2     3.4    -      -       +      +
    373A  ARG*     3.9    14.2    -      -       -      +
    387A  PHE*     3.8    11.7    -      +       -      -
    388A  ASP      3.4    25.6    -      -       -      -
    389A  GLU      3.1    18.9    +      -       -      -
    391A  GLN      3.8     9.4    -      -       -      -
    392A  ILE*     3.7    37.7    -      -       +      -
    406A  PHE*     3.6    45.5    -      +       +      +
----------------------------------------------------------
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Residues in contact with ARG 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  GLU      4.6     2.8    +      -       -      -
    107A  GLU*     2.9    43.6    +      -       -      +
    108A  SER*     3.6    26.0    +      -       -      +
    110A  TRP*     1.3    75.3    -      -       +      +
    112A  CYS*     1.3    63.2    +      -       -      +
    342A  ARG*     6.3     0.9    -      -       -      +
    372A  LEU*     3.5    37.6    -      -       +      +
    373A  ARG*     3.3    22.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  SER*     2.8    33.7    +      -       -      +
    109A  ASN      4.5     0.2    -      -       -      +
    111A  ARG*     1.3    80.9    -      -       -      +
    113A  GLY*     1.3    65.0    +      -       -      +
    114A  ARG*     3.2    29.6    +      -       +      +
    373A  ARG*     3.4    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  ASN      2.7    12.7    +      -       -      -
    110A  TRP      3.3     8.2    +      -       -      -
    111A  ARG      3.3     0.6    -      -       -      -
    112A  CYS*     1.3    78.3    -      -       -      +
    114A  ARG*     1.3    57.2    +      -       -      -
    115A  HIS*     3.3    20.8    +      -       -      -
    373A  ARG*     3.6    22.6    +      -       -      +
    375A  LEU*     4.6     4.8    -      -       -      +
    406A  PHE*     4.3     7.4    -      -       -      -
----------------------------------------------------------
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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