Contacts of the helix formed by residues 405 - 427 (chain B) in PDB entry 5UFL


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 405 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403B  ASN      3.8     3.2    +      -       -      -
    404B  LEU*     1.3    73.9    -      -       -      +
    406B  GLU*     1.3    64.1    +      -       -      +
    407B  ALA*     3.4    16.9    +      -       -      +
    408B  LEU*     3.1    20.1    +      -       +      +
    409B  THR*     2.7    40.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404B  LEU      3.9     1.2    +      -       -      -
    405B  ASP*     1.3    79.9    +      -       -      +
    407B  ALA*     1.3    61.6    +      -       -      +
    409B  THR*     3.4     6.9    +      -       -      -
    410B  ARG*     3.2    35.9    +      -       -      +
    457B  LYS*     4.8    11.8    +      -       -      +
    471B  LEU*     3.7    32.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405B  ASP*     3.4    11.8    +      -       -      +
    406B  GLU*     1.3    78.7    -      -       -      +
    408B  LEU*     1.3    58.2    +      -       -      +
    410B  ARG*     3.5    30.1    +      -       -      +
    411B  LYS*     3.1    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352B  LEU*     3.5    40.1    -      -       +      +
    353B  ASP*     3.7    32.5    -      -       -      +
    403B  ASN      5.9     0.4    -      -       -      +
    404B  LEU*     4.0    21.8    -      -       +      -
    405B  ASP*     3.1    26.6    +      -       +      +
    407B  ALA*     1.3    76.7    -      -       -      +
    409B  THR*     1.3    64.1    +      -       -      +
    411B  LYS*     3.5     5.6    +      -       +      +
    412B  LYS      3.2    17.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  PHE*     4.1    23.1    -      -       +      -
    404B  LEU*     3.5    27.7    +      -       +      +
    405B  ASP      2.7    28.7    +      -       -      -
    406B  GLU*     3.7     7.9    -      -       -      -
    407B  ALA      3.4     0.2    -      -       -      -
    408B  LEU*     1.3    71.2    -      -       -      +
    410B  ARG*     1.3    64.0    +      -       -      +
    412B  LYS*     3.4     2.8    +      -       -      +
    413B  CYS*     3.1    23.2    +      -       -      -
    455B  TYR*     4.6    12.1    -      -       +      +
    471B  LEU*     3.9    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  GLU*     3.2    24.9    +      -       -      +
    407B  ALA*     3.6    33.6    -      -       -      +
    408B  LEU      3.3     0.2    -      -       -      -
    409B  THR*     1.3    74.8    -      -       -      +
    411B  LYS*     1.3    58.8    +      -       -      +
    413B  CYS*     3.2     5.8    +      -       -      +
    414B  GLU*     2.9    30.9    +      -       -      +
    470B  GLU*     3.9    32.4    -      -       -      +
    471B  LEU*     3.9    22.4    -      -       +      +
    474B  LEU*     3.8    22.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351B  PRO      5.6     0.4    -      -       -      -
    352B  LEU*     3.6    19.1    -      -       +      -
    353B  ASP*     3.2    33.0    -      -       -      +
    357B  ASN*     3.8    31.7    +      -       -      +
    359B  SER*     5.4     2.2    -      -       -      -
    360B  VAL*     4.0    17.3    -      -       +      +
    407B  ALA      3.1    11.7    +      -       -      +
    408B  LEU*     3.7    11.9    -      -       +      +
    409B  THR      3.4     0.2    -      -       -      -
    410B  ARG*     1.3    78.3    -      -       -      +
    412B  LYS*     1.3    56.7    +      -       -      +
    414B  GLU*     3.6    15.9    +      -       -      +
    415B  ARG*     3.0    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352B  LEU*     3.9    15.6    -      -       +      +
    395B  ASP      5.1     1.8    +      -       -      -
    396B  GLN*     4.2    16.3    +      -       -      +
    398B  GLN      3.0    29.9    +      -       -      -
    399B  PHE*     3.6    29.2    -      -       +      +
    400B  THR*     5.0     1.6    +      -       -      -
    401B  GLU*     3.4    34.5    +      -       -      +
    404B  LEU*     4.5     0.2    -      -       +      -
    408B  LEU      3.2    14.9    +      -       -      +
    409B  THR*     3.6     9.2    -      -       -      +
    410B  ARG      3.2     0.4    -      -       -      -
    411B  LYS*     1.3    75.7    -      -       -      +
    413B  CYS*     1.3    58.1    +      -       -      +
    415B  ARG*     3.2    13.6    +      -       +      +
    416B  ILE*     2.8    51.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  PHE*     4.1    15.5    -      -       -      -
    409B  THR*     3.1    19.0    +      -       -      +
    410B  ARG*     3.2     7.6    +      -       -      +
    412B  LYS*     1.3    74.0    -      -       -      +
    414B  GLU*     1.3    61.4    +      -       -      +
    416B  ILE*     4.4     5.8    -      -       -      -
    417B  ALA*     3.0    30.0    +      -       -      +
    452B  GLN*     3.4    24.9    -      -       -      +
    456B  GLY*     5.7     1.8    -      -       -      -
    471B  LEU*     4.2    17.7    -      -       -      -
    474B  LEU*     4.0    20.6    -      -       +      +
    475B  ALA*     4.5     5.6    -      -       -      -
    478B  VAL*     3.4    11.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    360B  VAL*     4.3    28.8    -      -       +      +
    410B  ARG      2.9    15.7    +      -       -      +
    411B  LYS*     3.7    14.6    -      -       -      +
    413B  CYS*     1.3    77.5    -      -       -      +
    415B  ARG*     1.3    57.1    +      -       -      +
    417B  ALA*     3.4     6.8    +      -       -      +
    418B  LYS*     3.1    41.7    +      -       +      +
    474B  LEU*     4.6    18.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348B  LEU      2.8    20.4    +      -       -      -
    349B  SER      4.6     0.2    -      -       -      -
    350B  GLN      2.6    29.7    +      -       -      -
    351B  PRO*     3.8     4.0    +      -       -      +
    352B  LEU*     3.7    35.4    -      -       -      +
    359B  SER*     3.1    28.3    +      -       -      -
    360B  VAL*     4.7    15.0    -      -       +      +
    363B  LEU*     3.4    24.5    -      -       +      +
    396B  GLN*     3.0    26.5    +      -       +      +
    401B  GLU*     6.2     0.2    -      -       -      -
    411B  LYS*     3.0    27.7    +      -       -      +
    412B  LYS*     3.2    14.4    +      -       +      +
    414B  GLU*     1.3    75.4    -      -       -      +
    416B  ILE*     1.3    64.8    +      -       -      +
    418B  LYS*     3.5     1.4    +      -       -      -
    419B  ALA*     3.2    18.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 416 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    396B  GLN      3.3    23.6    -      -       -      +
    397B  LEU*     3.7     9.1    -      -       +      +
    398B  GLN      4.7     2.2    -      -       -      +
    399B  PHE*     3.7    21.1    -      -       +      -
    412B  LYS*     2.8    40.7    +      -       +      +
    413B  CYS*     3.9     4.3    -      -       -      +
    415B  ARG*     1.3    71.6    -      -       -      +
    417B  ALA*     1.3    62.5    +      -       -      +
    419B  ALA*     3.3     6.0    +      -       -      +
    420B  ILE*     3.1    22.0    +      -       +      +
    448B  LEU*     4.0    24.5    -      -       +      -
    452B  GLN*     3.4    21.3    -      -       -      +
    478B  VAL*     3.6    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 417 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    413B  CYS      3.0    18.6    +      -       -      +
    414B  GLU*     3.5     8.3    -      -       -      +
    415B  ARG      3.3     0.2    -      -       -      -
    416B  ILE*     1.3    77.8    -      -       -      +
    418B  LYS*     1.3    57.4    +      -       +      +
    420B  ILE*     3.3    10.2    +      -       -      +
    421B  GLU*     3.1    34.8    +      -       -      +
    474B  LEU*     6.0     3.6    -      -       +      -
    477B  ASP*     4.6     7.2    -      -       -      +
    478B  VAL*     4.0    15.5    -      -       +      -
    481B  LYS*     4.1    16.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 418 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    360B  VAL*     3.7    23.8    -      -       +      +
    363B  LEU*     3.8    26.9    -      -       +      +
    364B  GLU*     3.6    42.0    +      -       +      +
    367B  LYS*     5.6     0.4    -      -       +      +
    414B  GLU*     3.1    28.8    +      -       -      +
    415B  ARG      3.9     0.2    -      -       -      +
    416B  ILE      3.4     0.4    -      -       -      -
    417B  ALA*     1.3    72.8    -      -       +      +
    419B  ALA*     1.3    65.4    +      -       -      +
    421B  GLU*     3.3    32.6    +      -       -      +
    422B  VAL*     3.1    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 419 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363B  LEU*     3.8    14.9    -      -       +      +
    393B  ILE*     3.7    13.5    -      -       +      +
    396B  GLN*     3.8    19.5    -      -       +      -
    397B  LEU*     3.5    18.8    -      -       +      -
    415B  ARG      3.2    11.9    +      -       -      +
    416B  ILE      3.3     8.7    +      -       -      +
    418B  LYS*     1.3    79.8    -      -       -      +
    420B  ILE*     1.3    60.8    +      -       -      +
    422B  VAL*     3.5     5.2    +      -       -      +
    423B  LEU*     3.3    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 420 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    397B  LEU*     3.5    31.2    -      -       +      -
    416B  ILE*     3.1    21.3    +      -       +      +
    417B  ALA*     3.3     8.9    +      -       -      +
    419B  ALA*     1.3    73.0    -      -       -      +
    421B  GLU*     1.3    61.6    +      -       -      +
    423B  LEU*     3.1     6.5    +      -       -      +
    424B  LEU*     2.8    33.5    +      -       +      +
    448B  LEU*     4.0     6.7    -      -       +      -
    478B  VAL*     5.1     1.6    -      -       +      -
    481B  LYS*     3.7    40.4    -      -       +      +
    482B  THR*     3.8    22.9    -      -       +      +
    485B  LEU*     4.1    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 421 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367B  LYS*     3.1    39.7    +      -       +      +
    417B  ALA*     3.1    21.1    +      -       -      +
    418B  LYS*     3.3    39.8    +      -       +      +
    420B  ILE*     1.3    73.6    -      -       -      +
    422B  VAL*     1.3    63.3    +      -       -      +
    424B  LEU*     3.4    14.0    +      -       +      +
    425B  THR*     3.1    28.8    +      -       -      +
    481B  LYS*     3.4    31.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 422 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363B  LEU*     3.2    38.1    -      -       +      +
    366B  PHE*     4.1     6.1    -      -       +      -
    367B  LYS*     3.9    13.5    -      -       +      +
    370B  PHE*     4.3    22.2    -      -       +      -
    393B  ILE*     3.4    26.9    -      -       +      -
    418B  LYS      3.1    13.6    +      -       -      +
    419B  ALA      3.7     8.1    -      -       -      +
    420B  ILE      3.2     0.2    -      -       -      -
    421B  GLU*     1.3    74.6    -      -       -      +
    423B  LEU*     1.3    62.4    +      -       +      +
    425B  THR*     3.0    22.2    +      -       -      +
    426B  LEU*     3.1    16.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 423 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390B  LEU*     3.4    33.7    -      -       +      -
    393B  ILE*     4.0    14.1    -      -       +      -
    394B  LEU*     3.7    25.1    -      -       +      -
    397B  LEU*     3.7    20.6    -      -       +      -
    419B  ALA      3.3    12.5    +      -       -      +
    420B  ILE*     3.1     8.8    +      -       -      +
    422B  VAL*     1.3    76.2    -      -       +      +
    424B  LEU*     1.3    61.5    +      -       -      +
    426B  LEU*     4.3     4.0    -      -       +      -
    427B  CYS*     3.2    26.9    +      -       -      -
    436B  ILE*     3.6    19.1    -      -       +      +
    440B  LEU*     4.5     4.9    -      -       +      -
    485B  LEU*     3.9    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 424 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  ILE*     2.8    37.4    +      -       +      +
    421B  GLU*     3.6    15.3    -      -       +      +
    422B  VAL      3.2     0.2    -      -       -      -
    423B  LEU*     1.3    71.8    -      -       -      +
    425B  THR*     1.3    64.7    +      -       +      +
    427B  CYS*     3.4    17.3    +      -       -      +
    428B  GLY*     3.8     2.6    +      -       -      -
    481B  LYS*     4.2    17.5    -      -       +      +
    484B  ASP*     3.8    23.1    -      -       -      +
    485B  LEU*     3.6    37.9    -      -       +      +
    488B  LYS*     3.9    23.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 425 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367B  LYS*     3.6    37.0    +      -       +      +
    370B  PHE*     4.0     9.7    -      -       -      +
    371B  GLU*     4.1    22.0    -      -       +      +
    374B  ILE*     3.1    16.4    -      -       -      +
    421B  GLU      3.1    14.8    +      -       -      +
    422B  VAL*     3.0    16.0    +      -       -      -
    424B  LEU*     1.3    73.7    -      -       +      +
    426B  LEU*     1.3    66.7    +      -       -      +
    427B  CYS      3.1     0.2    -      -       -      -
    428B  GLY*     2.9    19.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 426 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370B  PHE*     3.4    48.0    -      -       +      -
    374B  ILE*     4.1     4.7    -      -       +      -
    386B  VAL*     4.2    15.9    -      -       +      -
    389B  LEU*     5.6     2.9    -      -       +      -
    390B  LEU*     3.8    28.7    -      -       +      -
    393B  ILE*     5.6     0.2    -      -       +      -
    422B  VAL*     3.1    21.1    +      -       +      +
    423B  LEU*     3.7     7.0    -      -       +      +
    425B  THR*     1.3    83.1    +      -       -      +
    427B  CYS*     1.3    58.1    +      -       -      +
    428B  GLY      3.3     0.5    +      -       -      -
    429B  ASP*     3.2    21.8    +      -       -      +
    432B  LEU*     3.4    27.3    -      -       +      +
    433B  LYS      3.7     0.7    +      -       -      -
    436B  ILE*     3.5    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 427 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423B  LEU      3.2    20.7    +      -       -      -
    424B  LEU      3.5    11.0    -      -       -      +
    425B  THR      3.1     1.0    -      -       -      -
    426B  LEU*     1.3    72.9    -      -       -      +
    428B  GLY*     1.3    63.1    +      -       -      +
    429B  ASP      3.2     7.4    +      -       -      +
    430B  ASP*     5.4     0.5    -      -       -      +
    433B  LYS*     3.8    44.2    +      -       +      +
    436B  ILE*     4.1     8.5    -      -       -      -
    485B  LEU*     3.8    21.1    -      -       -      -
    488B  LYS*     3.8    23.9    -      -       +      -
    489B  LEU*     4.2     6.7    -      -       -      -
----------------------------------------------------------
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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