Contacts of the helix formed by residues 113 - 134 (chain B) in PDB entry 2OG9


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 GLY 113 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  ALA      3.2    22.9    -      -       -      -
    110A  GLY*     5.3     0.2    -      -       -      -
    112A  SER      3.8     7.9    -      -       -      -
    112B  SER*     1.3    77.8    -      -       -      +
    114B  LEU*     1.3    65.1    +      -       -      -
    115B  SER      3.3     0.9    -      -       -      -
    116B  THR*     3.3     2.9    +      -       -      -
    117B  GLN*     2.9    36.1    +      -       -      +
    268B  THR*     3.8    10.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 114 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  GLY      4.8     0.7    -      -       -      +
     79A  HIS*     3.6    37.0    -      -       +      +
    109A  ALA*     3.5    29.2    +      -       +      -
    112A  SER      5.0     0.2    +      -       -      -
    114A  LEU*     4.0    23.7    -      -       +      +
    115A  SER*     3.9    17.0    -      -       -      +
     68B  SER*     4.7     0.2    -      -       -      +
     72B  GLY*     3.8    24.7    -      -       -      +
     75B  GLY*     4.2    14.1    -      -       -      -
     76B  GLN*     3.8    15.4    -      -       +      +
     79B  HIS*     5.4     0.2    -      -       -      -
    112B  SER      4.1     0.4    +      -       -      -
    113B  GLY*     1.3    70.6    -      -       -      -
    115B  SER*     1.3    62.5    +      -       -      +
    117B  GLN*     3.3    15.1    +      -       -      +
    118B  ALA*     3.0    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 115 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  LEU*     3.9     8.6    +      -       -      +
     79B  HIS*     3.4    34.0    -      -       -      -
    106B  GLY      5.0     1.1    +      -       -      -
    109B  ALA*     3.6    34.5    +      -       -      +
    110B  GLY      3.9    10.6    +      -       -      -
    112B  SER      4.1     4.5    +      -       -      -
    113B  GLY      3.3     0.4    +      -       -      -
    114B  LEU*     1.3    78.7    -      -       -      +
    116B  THR*     1.3    60.9    +      -       -      +
    118B  ALA*     3.3     4.9    +      -       -      +
    119B  ILE*     3.1    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 116 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99B  TRP*     3.8    25.6    -      -       +      -
    103B  CYS*     4.4     2.2    -      -       -      -
    110B  GLY      4.1     6.5    -      -       -      +
    111B  ARG*     3.4    32.9    +      -       -      +
    112B  SER*     3.1    27.0    -      -       -      +
    113B  GLY      3.3     4.0    +      -       -      -
    115B  SER*     1.3    80.3    +      -       -      +
    117B  GLN*     1.3    60.6    +      -       -      +
    118B  ALA      3.2     0.2    -      -       -      -
    119B  ILE*     3.3    16.8    +      -       +      +
    120B  GLY      2.8    21.7    +      -       -      -
    268B  THR      4.4     4.0    +      -       -      -
    292B  VAL      4.7     1.9    +      -       -      -
    293B  GLY*     3.2    15.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 117 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  SER*     2.9    29.0    +      -       -      +
    109A  ALA*     4.0     2.7    -      -       -      +
     66B  SER*     3.1    29.6    +      -       -      +
     67B  TYR      4.4     2.6    -      -       -      +
     76B  GLN*     2.7    38.0    +      -       -      +
    113B  GLY*     2.9    24.8    +      -       -      +
    114B  LEU*     3.6    16.1    -      -       -      +
    116B  THR*     1.3    74.7    -      -       -      +
    118B  ALA*     1.3    64.9    +      -       -      +
    120B  GLY*     3.2     8.7    +      -       -      +
    121B  ALA      3.3     1.9    +      -       -      -
    268B  THR*     3.6    11.3    -      -       -      +
    290B  PRO      3.8     9.4    -      -       -      +
    291B  ARG*     3.2    34.5    +      -       -      +
    293B  GLY*     4.5     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 118 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  LEU*     3.9    12.7    -      -       -      +
     76B  GLN*     3.5    25.5    -      -       -      +
     79B  HIS*     4.3     7.6    -      -       +      -
     80B  ALA*     3.9    17.9    -      -       +      +
     83B  ILE*     4.9     1.1    -      -       +      -
    114B  LEU      3.0    12.7    +      -       -      +
    115B  SER      3.5     9.6    -      -       -      +
    116B  THR      3.2     0.2    -      -       -      -
    117B  GLN*     1.3    75.8    -      -       -      +
    119B  ILE*     1.3    64.9    +      -       -      +
    121B  ALA*     3.1    16.1    +      -       -      +
    122B  PHE*     3.4    16.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 119 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79B  HIS*     5.6     1.1    -      -       -      +
     83B  ILE*     3.7    17.9    -      -       +      -
     99B  TRP*     3.4    43.5    -      -       +      +
    102B  LEU*     3.6    13.0    -      -       +      +
    103B  CYS*     3.4    41.3    -      -       +      +
    115B  SER*     3.1    19.5    +      -       -      +
    116B  THR*     3.4    20.0    -      -       +      +
    118B  ALA*     1.3    75.6    -      -       -      +
    120B  GLY*     1.3    58.4    +      -       -      +
    122B  PHE*     3.0    15.0    +      -       -      +
    123B  ASP*     2.9    23.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 120 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65B  PHE      4.7     2.2    -      -       -      -
     66B  SER*     5.1     0.7    -      -       -      -
    116B  THR      2.8    11.1    +      -       -      -
    117B  GLN      3.2     6.0    +      -       -      -
    118B  ALA      3.1     0.6    -      -       -      -
    119B  ILE*     1.3    78.0    -      -       -      +
    121B  ALA*     1.3    60.7    +      -       -      +
    123B  ASP*     3.4     2.1    -      -       -      +
    124B  VAL*     2.9    31.6    +      -       -      +
    290B  PRO*     5.3     2.7    -      -       -      -
    293B  GLY*     3.1    31.0    -      -       -      -
    294B  GLY*     3.8     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 121 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  ILE*     6.3     0.2    -      -       +      -
     50B  LEU*     3.9    33.7    -      -       +      +
     52B  ALA*     3.6    21.7    -      -       +      +
     64B  GLY*     3.5    12.6    -      -       -      -
     65B  PHE*     3.9    18.2    -      -       -      +
     66B  SER*     4.0     2.8    -      -       -      +
    117B  GLN      3.3     4.0    +      -       -      -
    118B  ALA      3.1    12.5    +      -       -      +
    120B  GLY*     1.3    75.3    -      -       -      +
    122B  PHE*     1.3    63.9    +      -       +      +
    125B  ALA      3.2    15.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 122 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  VAL*     3.6    26.9    -      -       +      -
     20B  ILE*     3.6    22.4    -      -       +      -
     52B  ALA*     3.8    12.8    -      -       +      -
     54B  ILE*     3.7     7.7    -      -       +      +
     80B  ALA*     3.6    34.8    -      -       +      -
     83B  ILE*     4.1    13.0    -      -       +      -
     84B  ALA*     4.0     8.5    -      -       +      -
     87B  LEU*     3.5    25.6    -      -       +      -
    102B  LEU*     3.8    21.5    -      -       +      -
    118B  ALA      3.4    22.7    -      -       -      -
    119B  ILE*     3.0     7.2    +      -       -      +
    121B  ALA*     1.3    75.1    -      -       +      +
    123B  ASP*     1.3    66.3    +      -       -      +
    125B  ALA*     3.2     4.0    +      -       -      +
    126B  LEU*     2.9    29.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 123 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  ILE*     3.2    14.0    -      -       -      +
     99B  TRP*     3.6    17.5    -      -       +      +
    119B  ILE*     2.9    13.2    +      -       +      +
    120B  GLY*     3.2    14.1    +      -       -      +
    122B  PHE*     1.3    77.4    -      -       -      +
    124B  VAL*     1.3    61.7    +      -       -      +
    126B  LEU*     3.2    10.6    +      -       -      +
    127B  TRP*     3.1    30.9    +      -       -      -
    293B  GLY      4.1     0.9    -      -       -      +
    295B  ILE*     2.9    14.4    +      -       -      -
    296B  THR*     2.7    51.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 124 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64B  GLY*     3.6    16.2    -      -       -      -
     65B  PHE*     4.1    15.0    -      -       +      +
    120B  GLY      2.9    21.4    +      -       -      +
    121B  ALA      3.9     0.2    -      -       -      +
    123B  ASP*     1.3    76.1    -      -       -      +
    125B  ALA*     1.3    57.7    +      -       -      +
    127B  TRP*     3.2     2.9    +      -       -      +
    128B  ASP*     2.9    26.5    +      -       -      +
    290B  PRO*     5.8     1.6    -      -       +      -
    294B  GLY*     4.2    11.4    -      -       -      -
    295B  ILE*     4.2    21.1    -      -       +      -
    320B  LEU*     4.2    23.6    -      -       +      -
    363B  LEU*     3.4    34.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 125 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  ALA      3.8     9.9    -      -       -      +
     54B  ILE*     3.8    18.4    -      -       +      -
     62B  GLY*     3.4    16.5    -      -       -      +
     63B  LEU      3.6    14.8    -      -       -      -
     64B  GLY*     3.6    15.6    -      -       -      +
    121B  ALA      3.2     8.6    +      -       -      +
    122B  PHE*     3.2    10.0    +      -       -      +
    124B  VAL*     1.3    79.1    -      -       -      +
    126B  LEU*     1.3    57.5    +      -       -      +
    128B  ASP*     3.2     2.9    +      -       -      +
    129B  LEU*     2.9    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 126 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  ILE*     3.9     9.4    -      -       +      -
     54B  ILE*     3.9    22.9    -      -       +      -
     87B  LEU*     4.8     6.1    -      -       +      -
     92B  PRO*     3.7    37.2    -      -       +      +
     95B  ILE*     3.7    30.4    -      -       +      +
     98B  LEU*     3.9    28.3    -      -       +      -
     99B  TRP      5.9     0.2    -      -       -      +
    122B  PHE*     2.9    23.1    +      -       +      +
    123B  ASP*     3.2     7.6    +      -       -      +
    125B  ALA*     1.3    75.8    -      -       -      +
    127B  TRP*     1.3    59.0    +      -       -      +
    129B  LEU*     3.4     7.8    +      -       +      +
    130B  LYS*     3.0    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 127 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  ILE*     3.5    26.1    -      -       +      +
    123B  ASP*     3.1    29.2    +      -       -      -
    124B  VAL      3.6     2.0    -      -       -      +
    126B  LEU*     1.3    73.0    -      -       -      +
    128B  ASP*     1.3    66.7    +      -       -      +
    130B  LYS*     3.3    11.6    +      -       +      +
    131B  ALA*     2.9    25.3    +      -       -      +
    138B  LEU*     4.2    13.8    -      -       +      +
    141B  LEU*     3.9    29.6    -      -       +      +
    142B  LEU*     3.6    18.8    -      -       +      -
    295B  ILE*     3.5    47.8    -      -       +      +
    296B  THR*     3.2    23.5    +      -       -      -
    299B  LEU*     3.7    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 128 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62B  GLY*     3.5     1.6    -      -       -      -
     63B  LEU*     2.9    30.7    +      -       -      +
    124B  VAL      2.9    13.5    +      -       -      +
    125B  ALA      3.3     8.3    -      -       -      +
    127B  TRP*     1.3    76.6    -      -       -      +
    129B  LEU*     1.3    57.7    +      -       -      +
    131B  ALA*     3.4     1.7    +      -       -      +
    132B  LYS*     2.8    69.9    +      -       -      +
    138B  LEU*     5.7     0.2    -      -       -      -
    362B  GLY*     3.3     4.1    -      -       -      -
    363B  LEU*     2.7    47.0    +      -       +      +
    364B  GLY      4.3     0.7    +      -       -      -
    365B  LEU      5.2     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 129 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54B  ILE*     4.1    16.4    -      -       +      +
     56B  THR*     3.8    24.5    -      -       +      -
     60B  HIS*     3.8    18.3    +      -       +      +
     61B  GLN      3.6    30.7    -      -       -      +
     62B  GLY*     3.9     3.8    -      -       -      +
     92B  PRO*     4.4    15.7    -      -       +      +
    125B  ALA      2.9    14.9    +      -       -      +
    126B  LEU*     3.6     8.1    -      -       +      +
    128B  ASP*     1.3    78.4    -      -       -      +
    130B  LYS*     1.3    61.4    +      -       -      +
    132B  LYS*     3.4     3.3    +      -       -      +
    133B  ARG*     2.9    53.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 130 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  PRO      5.8     0.9    -      -       -      +
     93B  SER*     2.8    47.9    +      -       -      +
     95B  ILE*     4.0    18.9    -      -       +      +
    126B  LEU      3.0    16.2    +      -       -      +
    127B  TRP*     3.8    13.3    -      -       +      +
    129B  LEU*     1.3    78.4    -      -       +      +
    131B  ALA*     1.3    66.8    +      -       -      +
    133B  ARG*     3.2    27.8    +      -       +      +
    134B  ALA*     3.3     9.2    +      -       -      +
    141B  LEU*     4.0    23.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 131 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127B  TRP      2.9    17.9    +      -       -      +
    130B  LYS*     1.3    77.8    -      -       -      +
    132B  LYS*     1.3    62.1    +      -       -      +
    134B  ALA*     3.0    12.8    +      -       -      +
    136B  LEU      3.0    36.3    +      -       -      +
    137B  SER      4.1     1.1    -      -       -      +
    138B  LEU*     4.1    13.0    -      -       +      -
    141B  LEU*     3.6    22.8    -      -       +      +
    362B  GLY*     3.5    16.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 132 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60B  HIS*     5.5     1.8    -      -       -      +
     61B  GLN*     3.6    24.9    +      -       +      +
     62B  GLY*     4.7     1.8    -      -       -      -
     63B  LEU*     4.7     3.4    -      -       -      +
    128B  ASP*     2.8    49.7    +      -       -      +
    129B  LEU*     3.7     4.7    -      -       -      +
    131B  ALA*     1.3    72.3    -      -       -      +
    133B  ARG*     1.3    66.4    +      -       -      +
    135B  GLY*     2.9    14.6    +      -       -      -
    361B  PRO*     3.9    28.1    -      -       +      +
    362B  GLY      3.9    11.0    -      -       -      +
    363B  LEU      5.1     0.2    -      -       -      +
    364B  GLY*     5.3     2.2    -      -       -      +
    365B  LEU      4.6    12.2    +      -       -      +
    366B  THR*     5.9     3.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 133 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12B  SER*     4.4     9.8    +      -       -      -
     13B  ASP*     3.3    35.2    +      -       -      +
     60B  HIS*     3.1    47.8    +      -       +      +
     92B  PRO*     3.9     7.7    -      -       -      +
     93B  SER*     4.1    16.7    +      -       -      -
    129B  LEU*     2.9    36.5    +      -       -      +
    130B  LYS*     3.2    18.6    -      -       -      +
    131B  ALA      3.2     0.2    -      -       -      -
    132B  LYS*     1.3    76.8    -      -       -      +
    134B  ALA*     1.3    58.7    +      -       -      +
    135B  GLY      3.6     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 134 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130B  LYS      3.3     6.7    +      -       -      +
    131B  ALA      3.0     9.8    +      -       -      +
    133B  ARG*     1.3    77.9    -      -       -      +
    135B  GLY*     1.3    64.2    +      -       -      +
    136B  LEU*     3.4    28.4    +      -       +      +
    141B  LEU*     4.7     8.7    -      -       +      -
----------------------------------------------------------
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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