Contacts of the helix formed by residues 399 - 423 (chain B) in PDB entry 4JGV


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASP 399 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  GLU*     1.3    76.2    -      -       -      +
    400B  ALA*     1.3    64.5    +      -       -      +
    401B  GLY*     2.9    27.0    +      -       -      -
    402B  ASP*     3.1    34.9    +      -       -      +
    403B  VAL*     3.2    13.2    +      -       -      +
    477B  ARG*     4.4    13.0    +      -       -      -
    581B  LEU*     3.6     8.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 400 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  ASP*     1.3    76.4    -      -       -      +
    401B  GLY*     1.3    56.3    +      -       -      +
    403B  VAL*     3.4     1.5    +      -       -      +
    404B  GLN*     2.9    30.0    +      -       -      +
    581B  LEU*     3.7    18.9    -      -       +      +
    582B  VAL*     3.7    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 401 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  ASP*     2.9    10.4    +      -       -      -
    400B  ALA*     1.3    75.0    -      -       -      +
    402B  ASP*     1.3    66.4    +      -       -      +
    404B  GLN*     3.9     7.0    -      -       -      +
    405B  GLN*     3.1    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 402 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  GLU*     3.5    11.7    -      -       +      +
    399B  ASP*     3.1    39.2    +      -       -      +
    401B  GLY*     1.3    78.0    -      -       -      +
    403B  VAL*     1.3    63.1    +      -       -      +
    405B  GLN*     3.3    13.5    +      -       -      +
    406B  PHE*     3.1    21.8    +      -       -      +
    474B  GLN      5.4     3.8    -      -       -      +
    477B  ARG*     3.4    38.8    +      -       -      +
    478B  GLY*     4.0    17.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 403 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  GLU*     3.9    16.8    -      -       +      -
    399B  ASP      3.2    13.8    +      -       -      +
    400B  ALA*     3.8     7.9    -      -       -      +
    401B  GLY      3.3     0.2    -      -       -      -
    402B  ASP*     1.3    75.8    -      -       -      +
    404B  GLN*     1.3    63.3    +      -       -      +
    406B  PHE*     3.3     7.5    +      -       -      +
    407B  TYR*     3.1    47.5    +      -       +      -
    478B  GLY*     5.1     2.2    -      -       -      -
    576B  LEU*     4.1    22.0    -      -       +      +
    579B  GLU*     3.8    21.5    -      -       -      +
    581B  LEU*     4.1     6.1    -      -       +      -
    582B  VAL*     3.5    18.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 404 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400B  ALA      2.9    17.8    +      -       -      +
    401B  GLY*     3.9     7.6    -      -       -      +
    403B  VAL*     1.3    79.1    -      -       -      +
    405B  GLN*     1.3    51.8    +      -       -      +
    407B  TYR*     3.2     8.9    +      -       -      +
    408B  ASP*     2.7    71.5    +      -       -      +
    582B  VAL*     3.6    26.3    -      -       +      +
    583B  PRO      5.5     0.2    -      -       -      +
    585B  PRO*     5.9     2.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 405 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401B  GLY      3.1    19.3    +      -       -      +
    402B  ASP*     3.6    14.4    +      -       -      +
    404B  GLN*     1.3    76.2    -      -       -      +
    406B  PHE*     1.3    61.6    +      -       -      +
    408B  ASP*     3.3     9.2    +      -       -      +
    409B  LEU*     2.9    47.9    +      -       +      +
    468B  LEU*     6.2     0.9    -      -       +      -
    470B  LEU*     3.8    21.1    -      -       +      +
    474B  GLN*     3.7    15.4    +      -       -      +
    475B  CYS*     3.6    27.3    +      -       -      +
    478B  GLY*     5.5     2.6    -      -       -      +
    479B  PHE*     5.0     1.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402B  ASP      3.1    13.2    +      -       -      +
    403B  VAL*     3.3    10.5    -      -       -      +
    405B  GLN*     1.3    78.9    -      -       -      +
    407B  TYR*     1.3    78.0    +      +       -      +
    409B  LEU*     3.3     3.5    +      -       -      +
    410B  LEU*     3.1    45.9    +      -       +      +
    478B  GLY*     3.8    14.4    -      -       -      +
    479B  PHE*     3.6    47.1    -      +       +      -
    482B  TRP*     3.6    33.0    -      +       -      -
    572B  ARG*     4.1    11.7    -      -       +      -
    573B  ILE*     4.2    11.0    -      -       +      -
    576B  LEU*     3.5    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403B  VAL*     3.1    38.0    +      -       +      -
    404B  GLN*     3.7    11.4    -      -       -      +
    406B  PHE*     1.3    94.5    -      +       -      +
    408B  ASP*     1.3    61.3    +      -       -      +
    410B  LEU*     3.3     6.1    +      -       +      +
    411B  SER*     2.8    33.9    +      -       -      -
    573B  ILE*     4.4     9.6    +      -       +      +
    576B  LEU*     3.6    24.8    -      -       +      +
    577B  LYS*     4.2     7.3    +      -       -      +
    582B  VAL*     3.7    26.6    +      -       +      -
    583B  PRO      4.1     5.2    -      -       -      -
    584B  PRO*     3.7    33.9    -      -       +      +
    585B  PRO*     3.6    25.4    -      -       +      +
    588B  ILE*     4.5    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404B  GLN*     2.7    60.0    +      -       -      +
    405B  GLN*     3.6     8.4    -      -       +      +
    407B  TYR*     1.3    73.1    -      -       -      +
    409B  LEU*     1.3    58.4    +      -       +      +
    411B  SER*     3.2     8.2    +      -       -      -
    412B  GLY*     2.8    27.9    +      -       -      -
    585B  PRO*     6.0     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405B  GLN*     2.9    42.8    +      -       +      +
    406B  PHE      3.6     4.0    -      -       -      +
    408B  ASP*     1.3    78.1    -      -       +      +
    410B  LEU*     1.3    63.0    +      -       -      +
    412B  GLY*     3.4     3.3    +      -       -      -
    413B  SER*     3.4    17.8    +      -       -      -
    447B  PHE*     4.0     7.1    -      -       +      -
    464B  PHE*     3.9    51.8    -      -       +      +
    466B  SER*     5.8     0.9    -      -       -      +
    468B  LEU*     4.0    17.7    -      -       +      -
    470B  LEU*     4.8     2.7    -      -       +      -
    475B  CYS*     5.1     0.2    -      -       +      -
    479B  PHE*     3.9    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  PHE*     3.1    44.7    +      -       +      +
    407B  TYR*     3.5    10.1    -      -       +      +
    409B  LEU*     1.3    76.6    -      -       -      +
    411B  SER*     1.3    63.5    +      -       -      +
    413B  SER*     3.0    11.3    +      -       -      -
    414B  LEU*     3.4     1.2    +      -       -      +
    443B  PHE*     3.3    31.5    -      -       +      -
    444B  LEU*     4.5     9.4    -      -       +      -
    447B  PHE*     3.6    41.1    -      -       +      -
    479B  PHE*     5.5     0.4    -      -       +      -
    482B  TRP*     4.7     6.1    -      -       +      -
    573B  ILE*     4.3    10.5    -      -       +      -
    588B  ILE*     4.0    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    407B  TYR      2.8    25.8    +      -       -      -
    408B  ASP*     3.4     8.6    +      -       -      -
    410B  LEU*     1.3    71.6    -      -       -      +
    412B  GLY*     1.3    55.5    +      -       -      +
    414B  LEU*     3.0    29.4    +      -       -      +
    415B  GLU*     2.4    25.7    -      -       -      +
    585B  PRO*     3.4    26.0    -      -       -      +
    587B  ILE*     5.3     1.5    -      -       -      +
    588B  ILE*     4.0     5.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408B  ASP      2.8    16.0    +      -       -      -
    409B  LEU*     3.4     4.2    +      -       -      -
    410B  LEU      3.2     0.4    -      -       -      -
    411B  SER*     1.3    75.9    -      -       -      +
    413B  SER*     1.3    60.1    +      -       -      +
    414B  LEU      3.5     0.2    +      -       -      -
    415B  GLU*     3.5    12.8    -      -       -      +
    416B  VAL*     3.7    17.3    -      -       -      +
    465B  CYS*     4.0     6.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  LEU      3.4     6.6    +      -       -      -
    410B  LEU      3.0    11.8    +      -       -      -
    412B  GLY*     1.3    76.1    -      -       -      +
    414B  LEU*     1.3    65.1    +      -       -      +
    415B  GLU      3.5     0.4    -      -       -      -
    416B  VAL*     3.4     3.2    +      -       -      +
    417B  ILE*     3.1    36.4    +      -       -      +
    443B  PHE*     4.0     7.6    -      -       -      -
    447B  PHE*     3.4    34.3    -      -       -      +
    450B  ARG*     4.5     4.5    +      -       -      -
    454B  ARG*     5.4     1.7    +      -       -      -
    465B  CYS*     3.8    21.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    410B  LEU      3.4     3.2    +      -       -      +
    411B  SER*     3.0    29.6    +      -       -      +
    413B  SER*     1.3    78.1    -      -       -      +
    415B  GLU*     1.3    72.6    +      -       -      +
    417B  ILE*     3.2     5.5    +      -       -      +
    418B  ARG*     3.2    34.3    +      -       -      +
    443B  PHE*     4.0    21.5    -      -       +      -
    587B  ILE*     4.0    33.4    -      -       +      -
    588B  ILE*     3.8    18.6    -      -       +      -
    591B  ILE*     3.9    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    411B  SER*     2.4    30.5    -      -       -      +
    412B  GLY*     3.5    11.3    -      -       -      +
    414B  LEU*     1.3    84.7    -      -       -      +
    416B  VAL*     1.3    69.4    +      -       +      +
    418B  ARG*     3.3    18.8    +      -       +      +
    419B  LYS*     3.2    40.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 416 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375B  SER*     3.3    36.4    -      -       -      +
    412B  GLY      3.7    16.6    -      -       -      +
    413B  SER      3.4     8.5    +      -       -      +
    414B  LEU      3.2     0.2    -      -       -      -
    415B  GLU*     1.3    80.6    -      -       +      +
    417B  ILE*     1.3    57.3    +      -       -      +
    419B  LYS*     3.4    13.4    +      -       -      +
    420B  TRP*     2.9    26.9    +      -       -      +
    450B  ARG*     3.9    14.4    -      -       -      +
    465B  CYS*     3.9    19.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 417 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    413B  SER*     3.1    28.6    +      -       -      +
    414B  LEU*     3.2     4.4    +      -       -      +
    416B  VAL*     1.3    73.9    -      -       -      +
    418B  ARG*     1.3    55.9    +      -       -      +
    420B  TRP*     3.1    23.4    +      -       +      +
    421B  ALA*     2.7    33.3    +      -       -      +
    439B  LEU*     4.0    13.9    -      -       +      +
    443B  PHE*     3.8    28.0    -      -       +      -
    446B  LEU*     3.9    33.4    -      -       +      -
    447B  PHE*     4.2     6.7    -      -       -      +
    450B  ARG*     4.0    24.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 418 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    414B  LEU*     3.2    32.3    +      -       -      +
    415B  GLU*     3.3    23.5    +      -       -      +
    417B  ILE*     1.3    75.7    -      -       -      +
    419B  LYS*     1.3    69.6    +      -       +      +
    421B  ALA*     3.3     1.9    +      -       -      +
    422B  GLU*     3.1    31.6    +      -       +      +
    436B  ASP*     5.2     7.5    +      -       -      +
    439B  LEU*     4.3    34.5    -      -       +      +
    587B  ILE*     5.8     6.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 419 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    415B  GLU*     3.2    33.6    +      -       +      +
    416B  VAL*     3.8    10.8    -      -       -      +
    418B  ARG*     1.3    82.8    -      -       +      +
    420B  TRP*     1.3    63.2    +      -       -      +
    422B  GLU*     3.4    11.3    +      -       -      +
    423B  LYS*     3.4    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 420 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368B  LEU*     4.9     2.2    +      -       +      -
    371B  ALA*     3.7    28.9    -      -       +      +
    372B  HIS*     3.8    13.6    +      -       -      +
    375B  SER*     3.9    21.3    -      -       -      -
    416B  VAL      2.9    18.7    +      -       -      +
    417B  ILE*     3.4    19.7    -      -       +      +
    419B  LYS*     1.3    72.6    -      -       -      +
    421B  ALA*     1.3    76.7    +      -       -      +
    423B  LYS*     3.1    24.8    +      -       -      +
    424B  ILE*     3.6    31.7    +      -       +      +
    446B  LEU*     3.7    29.4    -      -       +      -
    450B  ARG*     4.7    11.4    -      -       -      +
    504B  ALA      5.1     1.8    +      -       -      -
    507B  SER*     3.5    46.0    +      -       -      -
    508B  ALA*     3.8     6.7    -      -       +      -
    511B  LEU*     3.8    16.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 421 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417B  ILE      2.7    20.4    +      -       -      +
    418B  ARG*     3.6     4.9    -      -       -      +
    420B  TRP*     1.3    80.0    -      -       +      +
    422B  GLU*     1.3    58.6    +      -       -      +
    424B  ILE*     2.9    32.3    +      -       -      +
    427B  PHE*     3.4    22.3    -      -       +      +
    439B  LEU*     3.8    16.4    -      -       +      -
    511B  LEU*     3.6    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 422 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418B  ARG*     3.1    20.5    +      -       +      +
    419B  LYS*     3.8     7.6    -      -       -      +
    420B  TRP      3.2     0.4    -      -       -      -
    421B  ALA*     1.3    75.2    -      -       -      +
    423B  LYS*     1.3    61.4    +      -       +      +
    424B  ILE      3.2     6.6    +      -       -      +
    427B  PHE*     3.2    17.3    -      -       -      -
    428B  ALA*     3.4    35.3    -      -       -      +
    435B  GLN*     2.9    25.3    -      -       -      +
    439B  LEU*     5.0     4.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 423 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367B  SER*     4.4     5.4    -      -       -      +
    370B  ARG*     6.2     2.0    -      -       +      -
    371B  ALA*     3.7    32.7    +      -       +      +
    374B  ASP*     3.5    37.8    +      -       -      +
    375B  SER*     5.0     1.2    -      -       -      +
    419B  LYS*     3.4    22.2    +      -       -      +
    420B  TRP*     3.1    12.9    +      -       -      +
    422B  GLU*     1.3    76.4    -      -       +      +
    424B  ILE*     1.3    62.0    +      -       -      +
    425B  PRO*     3.4     9.7    -      -       -      +
----------------------------------------------------------
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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