Contacts of the helix formed by residues 223 - 244 (chain D) in PDB entry 6WVM


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 THR 223 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210D  TYR*     4.9     2.2    -      -       -      -
    221D  THR*     3.9    14.4    -      -       +      +
    222D  PRO*     1.3    77.3    -      -       -      +
    224D  TYR*     1.3    63.2    +      -       -      +
    225D  GLY*     3.1    14.3    +      -       -      -
    226D  ASP*     2.7    35.2    +      -       -      +
    227D  LEU*     3.2    17.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 224 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11D  GLN*     5.5     2.5    -      -       -      -
     15D  GLN*     5.0     4.3    -      -       -      +
    177D  VAL*     5.8     2.6    -      -       -      +
    179D  ASP*     2.9    26.5    +      -       -      -
    206D  ASN*     3.9    12.0    -      -       -      +
    210D  TYR*     3.9    20.5    +      +       -      -
    223D  THR*     1.3    73.8    -      -       -      +
    225D  GLY*     1.3    56.6    +      -       -      +
    227D  LEU*     3.3    10.3    +      -       +      +
    228D  ASN*     2.9    37.3    +      -       -      +
    501D  GDP      3.1    73.8    +      +       -      +
----------------------------------------------------------
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Residues in contact with GLY 225 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15D  GLN*     6.0     0.2    -      -       -      +
     19D  LYS*     3.8    12.8    +      -       -      -
    223D  THR*     3.1    10.2    +      -       -      -
    224D  TYR*     1.3    76.7    -      -       -      +
    226D  ASP*     1.3    60.4    +      -       -      +
    228D  ASN*     3.7    10.4    +      -       -      +
    229D  HIS*     3.4    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 226 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213D  CYS*     4.6     2.2    -      -       -      -
    219D  LEU*     4.3    19.2    -      -       +      +
    221D  THR      4.2     1.9    -      -       -      +
    222D  PRO*     3.7     9.7    -      -       +      +
    223D  THR*     2.7    42.6    +      -       -      +
    225D  GLY*     1.3    74.1    -      -       -      +
    227D  LEU*     1.3    65.0    +      -       -      +
    229D  HIS*     3.5     6.8    +      -       -      +
    230D  LEU*     3.4    18.0    +      -       -      +
    502D  TA1      3.5    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 227 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206D  ASN*     3.5    23.6    -      -       -      +
    209D  LEU*     3.5    43.2    -      -       +      +
    210D  TYR*     3.8    37.9    -      -       +      -
    213D  CYS*     3.7    13.2    -      -       -      -
    222D  PRO*     4.7     0.9    -      -       +      -
    223D  THR      3.2    15.5    +      -       -      +
    224D  TYR*     3.3    15.5    +      -       +      +
    226D  ASP*     1.3    77.3    -      -       -      +
    228D  ASN*     1.3    58.7    -      -       -      +
    230D  LEU*     3.3    10.3    +      -       -      +
    231D  VAL*     3.2    26.3    +      -       -      +
    501D  GDP      4.1    10.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 228 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15D  GLN*     3.6    22.4    +      -       -      +
     16D  ILE*     3.3    21.0    -      -       +      +
     19D  LYS*     3.7    20.1    -      -       +      +
    224D  TYR      2.9    25.4    +      -       -      +
    225D  GLY*     3.8     9.2    -      -       -      +
    226D  ASP      3.4     0.2    -      -       -      -
    227D  LEU*     1.3    75.6    -      -       -      +
    229D  HIS*     1.3    50.4    +      -       -      +
    230D  LEU      3.5     0.2    -      -       -      -
    231D  VAL*     3.7     1.8    +      -       -      +
    232D  SER*     2.7    36.6    +      -       -      -
    501D  GDP      2.7    47.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 229 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  LYS*     3.5    24.3    +      -       -      +
     23D  VAL*     5.0     4.9    -      -       +      -
    225D  GLY      3.4    11.0    +      -       -      +
    226D  ASP*     3.5    12.2    +      -       -      +
    228D  ASN*     1.3    75.0    -      -       -      +
    230D  LEU*     1.3    62.9    +      -       -      +
    232D  SER*     3.3     7.7    +      -       -      -
    233D  ALA*     3.2    25.2    +      -       +      +
    502D  TA1      2.8    97.8    +      +       +      +
----------------------------------------------------------
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Residues in contact with LEU 230 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209D  LEU*     3.7    26.7    -      -       +      +
    212D  ILE*     3.7    35.7    -      -       +      -
    213D  CYS*     3.7    26.2    -      -       -      -
    217D  LEU*     4.6     2.7    -      -       +      -
    226D  ASP      3.4     8.0    +      -       -      +
    227D  LEU*     3.3     8.8    +      -       -      +
    229D  HIS*     1.3    76.1    -      -       -      +
    231D  VAL*     1.3    65.4    +      -       -      +
    233D  ALA*     3.7     9.8    +      -       +      +
    234D  THR      3.8     5.4    +      -       -      -
    272D  PHE*     5.6     0.9    -      -       +      -
    275D  LEU*     3.8    28.7    -      -       +      -
    302D  MET*     3.5    27.3    -      -       +      +
    502D  TA1      4.2    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 231 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  ILE*     4.2    32.1    -      -       +      -
    169D  PHE*     5.2     0.7    -      -       +      -
    171D  VAL*     5.0     2.2    -      -       +      -
    204D  ILE*     3.7    33.0    -      -       +      -
    209D  LEU*     3.7    25.1    -      -       +      -
    227D  LEU      3.2    13.0    +      -       -      +
    228D  ASN      3.9     6.7    -      -       -      +
    230D  LEU*     1.3    75.5    -      -       -      +
    232D  SER*     1.3    62.3    +      -       -      +
    234D  THR*     2.9    26.0    +      -       -      -
    235D  MET*     3.2    25.2    +      -       +      +
    302D  MET*     4.7     3.4    -      -       -      -
    501D  GDP      5.5     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 232 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  ILE      4.2     2.9    -      -       -      -
     19D  LYS*     3.8     6.9    -      -       -      +
     20D  PHE*     3.5    37.5    -      -       -      -
     23D  VAL*     3.8    13.6    -      -       -      +
    228D  ASN      2.7    23.9    +      -       -      -
    229D  HIS*     3.3    12.5    +      -       -      -
    231D  VAL*     1.3    72.2    -      -       -      +
    233D  ALA*     1.3    58.3    +      -       -      +
    235D  MET*     3.6    11.3    -      -       -      +
    236D  SER*     2.9    30.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 233 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23D  VAL*     5.1     2.1    -      -       -      +
    229D  HIS*     3.2    20.3    +      -       +      +
    230D  LEU*     3.8     9.4    -      -       +      +
    231D  VAL      3.3     0.2    -      -       -      -
    232D  SER*     1.3    75.8    +      -       -      +
    234D  THR*     1.3    55.6    +      -       -      +
    236D  SER*     3.5     3.6    +      -       -      -
    237D  GLY*     3.0    23.4    +      -       -      -
    272D  PHE*     4.0    21.7    -      -       +      -
    376D  THR*     4.1     2.4    +      -       -      -
    502D  TA1      3.7    39.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 234 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169D  PHE*     4.6     9.1    -      -       -      -
    204D  ILE*     4.9     1.9    -      -       -      +
    230D  LEU      4.0     0.8    +      -       -      +
    231D  VAL*     2.9    19.7    +      -       -      -
    233D  ALA*     1.3    71.8    -      -       -      +
    235D  MET*     1.3    61.7    +      -       -      +
    238D  VAL*     3.2    30.6    +      -       -      +
    270D  PRO*     4.0    23.6    -      -       +      +
    271D  GLY      3.4    27.4    -      -       -      +
    272D  PHE*     4.1     6.3    -      -       +      -
    302D  MET*     3.7    30.4    -      -       +      -
    376D  THR*     3.9    12.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 235 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6D  HIS*     4.0    13.7    -      -       +      +
     16D  ILE*     4.8     3.1    -      -       -      +
     20D  PHE*     3.7    41.9    -      -       +      -
     52D  TYR*     4.1     5.9    +      -       -      -
    136D  GLN*     4.4     7.4    +      -       +      +
    138D  THR*     3.4    34.5    -      -       +      -
    169D  PHE*     3.7    41.7    -      -       +      -
    231D  VAL*     3.2    25.1    +      -       +      +
    232D  SER*     3.3     9.8    +      -       -      +
    234D  THR*     1.3    75.7    -      -       -      +
    236D  SER*     1.3    64.2    +      -       -      +
    237D  GLY      3.4     0.2    +      -       -      -
    238D  VAL*     3.8    11.1    +      -       -      +
    239D  THR*     4.0    11.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 236 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20D  PHE*     4.3     2.1    -      -       -      -
     23D  VAL*     4.1     4.5    -      -       -      -
     24D  ILE*     4.0    20.0    -      -       -      -
     27D  GLU*     2.8    26.5    +      -       -      -
    232D  SER      2.9    16.8    +      -       -      -
    233D  ALA      3.6     4.9    -      -       -      -
    235D  MET*     1.3    75.2    -      -       -      +
    237D  GLY*     1.3    60.3    +      -       -      +
    239D  THR*     3.8     1.9    +      -       -      -
    240D  THR*     3.0    11.9    +      -       -      -
    243D  ARG*     2.9    24.7    +      -       -      +
    320D  ARG*     3.8     1.7    +      -       -      -
    502D  TA1      3.3    22.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 237 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233D  ALA      3.0    11.0    +      -       -      -
    234D  THR      3.3     2.4    +      -       -      -
    235D  MET      3.2     1.2    -      -       -      -
    236D  SER*     1.3    75.7    -      -       -      +
    238D  VAL*     1.3    62.2    +      -       -      +
    240D  THR*     3.1    24.9    +      -       -      -
    272D  PHE*     5.9     0.2    -      -       -      -
    318D  ILE*     3.9    10.9    -      -       -      +
    320D  ARG*     5.1     7.5    -      -       -      -
    376D  THR*     3.4    28.3    -      -       -      -
    502D  TA1      5.2     0.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 238 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136D  GLN*     4.8     0.4    -      -       -      +
    167D  ASN*     4.8     0.4    -      -       -      +
    169D  PHE*     3.9    26.0    -      -       +      -
    202D  TYR*     4.1    17.9    -      -       +      +
    234D  THR*     3.2    13.1    +      -       -      +
    235D  MET      4.0     5.2    -      -       -      +
    236D  SER      3.6     0.2    -      -       -      -
    237D  GLY*     1.3    74.5    -      -       -      +
    239D  THR*     1.3    64.2    +      -       +      +
    240D  THR      3.4     0.4    +      -       -      -
    241D  CYS*     4.9     1.4    +      -       -      +
    242D  LEU*     4.9     0.3    -      -       -      +
    250D  ALA      4.6     8.0    -      -       -      +
    252D  LEU*     3.8    23.8    -      -       +      +
    255D  LEU*     3.9    17.0    -      -       +      +
    270D  PRO*     6.2     0.9    -      -       +      -
    318D  ILE*     4.6    10.9    -      -       +      +
    376D  THR*     3.9    13.5    -      -       +      -
    378D  ILE*     3.7    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 239 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4D  ILE*     3.9    14.6    -      -       +      -
     52D  TYR*     2.9    29.9    +      -       -      +
    136D  GLN*     3.6    22.4    -      -       -      +
    235D  MET      4.0     5.0    +      -       -      +
    236D  SER      3.8     5.1    +      -       -      -
    237D  GLY      3.3     0.2    -      -       -      -
    238D  VAL*     1.3    77.5    -      -       +      +
    240D  THR*     1.3    65.7    +      -       -      +
    241D  CYS      3.2     2.7    -      -       -      -
    242D  LEU*     3.0    34.3    +      -       -      +
    243D  ARG*     3.1    21.8    +      -       -      +
    252D  LEU*     4.1    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 240 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236D  SER      3.0    16.9    +      -       -      -
    237D  GLY      3.1    14.2    +      -       -      -
    238D  VAL      3.4     0.4    -      -       -      -
    239D  THR*     1.3    76.5    +      -       -      +
    241D  CYS*     1.3    57.7    +      -       -      +
    243D  ARG*     2.9    30.1    +      -       -      +
    244D  PHE*     3.0    18.1    +      -       +      +
    318D  ILE*     4.9     3.6    -      -       +      -
    320D  ARG*     3.4    37.2    +      -       +      +
    356D  CYS*     3.4    36.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 241 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73C  THR*     4.4     8.8    +      -       -      -
      2D  ARG*     4.6     3.3    +      -       -      -
    238D  VAL      4.9     1.1    +      -       -      +
    239D  THR      3.1     1.0    +      -       -      -
    240D  THR*     1.3    77.0    -      -       -      +
    242D  LEU*     1.3    57.8    +      -       -      +
    244D  PHE      3.8    13.8    -      -       -      +
    246D  GLY*     5.8     0.9    -      -       -      -
    248D  LEU      3.7    15.9    -      -       -      -
    249D  ASN*     3.9    17.1    -      -       -      +
    250D  ALA      3.2    45.3    +      -       -      +
    251D  ASP      5.4     0.2    -      -       -      -
    318D  ILE*     4.6    10.9    -      -       +      +
    354D  ALA*     4.2    12.8    -      -       -      -
    355D  VAL      4.8     0.7    -      -       -      -
    356D  CYS*     4.5    19.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 242 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73C  THR*     5.6     1.3    -      -       -      -
      2D  ARG*     3.6    68.2    +      -       +      +
      4D  ILE*     4.1    11.9    -      -       +      -
     48D  ARG*     3.8     9.0    +      -       -      -
     51D  VAL*     3.6    31.8    -      -       +      +
    133D  GLN*     5.3     6.3    -      -       +      -
    238D  VAL      4.9     0.7    -      -       -      +
    239D  THR*     3.0    39.6    +      -       -      +
    241D  CYS*     1.3    76.7    -      -       -      +
    243D  ARG*     1.3    58.1    +      -       -      +
    244D  PHE      3.8     0.7    -      -       -      -
    250D  ALA      5.0     0.7    -      -       -      +
    251D  ASP*     4.5     8.7    -      -       -      +
    252D  LEU*     4.3    26.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 243 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24D  ILE*     4.2     4.1    -      -       -      +
     27D  GLU*     2.7    32.5    +      -       -      -
     28D  HIS*     3.0    36.2    +      -       +      +
     42D  LEU      4.2     4.9    -      -       -      +
     48D  ARG*     3.2    27.7    -      -       -      +
     51D  VAL*     3.7    19.7    -      -       +      -
     52D  TYR*     3.3    33.3    -      -       -      -
    236D  SER*     2.9    31.7    +      -       -      +
    239D  THR*     3.1    21.9    +      -       -      +
    240D  THR*     2.9    16.2    +      -       -      +
    242D  LEU*     1.3    81.9    -      -       -      +
    244D  PHE*     1.3    78.6    +      -       +      +
    320D  ARG*     4.4     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 244 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73C  THR*     4.1     8.3    -      -       -      +
     27D  GLU*     4.2    23.6    -      -       +      -
     28D  HIS*     4.4    11.4    -      +       -      -
     42D  LEU*     3.5    29.4    -      -       +      -
     43D  GLN*     4.2     7.0    -      -       +      -
     48D  ARG*     5.5     0.4    -      -       -      -
    240D  THR*     3.0    17.4    +      -       +      +
    241D  CYS*     3.8    16.1    -      -       -      +
    242D  LEU      3.8     0.2    -      -       -      -
    243D  ARG*     1.3   108.7    -      -       +      +
    245D  PRO*     1.3    73.5    -      -       +      +
    249D  ASN*     4.9     1.0    -      -       -      +
    320D  ARG*     4.0    24.9    -      -       -      -
    356D  CYS*     3.5    19.7    -      -       -      -
    358D  ILE*     3.9    32.3    -      -       +      -
----------------------------------------------------------
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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