Contacts of the helix formed by residues 409 - 435 (chain A) in PDB entry 3DYQ


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with PRO 409 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199A  PRO      3.7    14.6    -      -       -      +
    200A  THR*     3.7    37.7    -      -       +      +
    407A  VAL      4.6     0.9    -      -       -      +
    408A  ARG*     1.3    88.4    -      -       +      +
    410A  MET*     1.3    61.1    -      -       -      +
    411A  GLU*     3.2    10.8    -      -       -      +
    412A  VAL*     2.9    20.2    +      -       +      +
    413A  ALA      2.8    24.3    +      -       -      -
    482A  PRO*     6.1     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  ARG      3.4     3.2    +      -       -      -
    409A  PRO*     1.3    71.3    -      -       -      +
    411A  GLU*     1.3    86.8    +      -       +      +
    413A  ALA*     4.4     5.2    -      -       -      +
    414A  GLU*     3.0    37.6    +      -       +      +
    486A  SER*     5.9     4.5    -      -       -      +
    489A  ARG*     3.8    54.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204A  TRP*     4.8     1.7    -      -       -      -
    409A  PRO*     3.1     9.9    +      -       -      +
    410A  MET*     1.3   104.2    +      -       +      +
    412A  VAL*     1.3    60.4    +      -       +      +
    414A  GLU*     5.0     1.3    -      -       -      -
    415A  PRO*     3.3    21.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200A  THR      4.6     2.0    -      -       -      +
    201A  PHE      4.2     8.1    -      -       -      +
    202A  ASP*     3.8    28.5    -      -       +      +
    203A  VAL*     4.1    20.2    -      -       +      -
    204A  TRP*     3.0    30.6    +      -       +      -
    408A  ARG*     3.8    28.7    -      -       +      -
    409A  PRO*     2.9    27.7    +      -       +      +
    411A  GLU*     1.3    80.4    -      -       +      +
    413A  ALA*     1.3    63.0    +      -       -      +
    414A  GLU      3.4     0.2    -      -       -      -
    415A  PRO*     3.6     1.3    -      -       -      +
    416A  TRP*     3.4     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 413 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405A  ASN*     3.4    28.3    -      -       -      +
    406A  GLU*     4.0    23.9    -      -       -      +
    408A  ARG*     3.9     7.9    -      -       -      +
    409A  PRO      2.8    18.4    +      -       -      +
    410A  MET*     3.2     5.8    +      -       -      +
    412A  VAL*     1.3    73.6    -      -       -      +
    414A  GLU*     1.3    67.0    +      -       -      +
    416A  TRP*     3.0    26.6    +      -       -      +
    417A  VAL*     3.9     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 414 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    410A  MET*     3.0    22.7    +      -       +      +
    411A  GLU*     4.9     1.1    -      -       -      +
    413A  ALA*     1.3    77.8    -      -       -      +
    415A  PRO*     1.3    72.9    -      -       +      +
    416A  TRP      3.1     0.7    +      -       -      -
    417A  VAL*     3.2    11.7    +      -       -      +
    418A  ASP*     4.5     3.6    -      -       -      +
    449A  LYS*     3.0    51.4    +      -       -      -
    489A  ARG*     3.8    30.4    +      -       -      +
    490A  TYR*     3.6    24.8    +      -       -      +
    493A  LEU*     5.5     2.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 415 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204A  TRP*     3.6    30.1    -      -       +      +
    411A  GLU      3.3    24.0    -      -       -      +
    412A  VAL      3.6     2.9    -      -       -      +
    413A  ALA      3.6     3.4    -      -       -      -
    414A  GLU*     1.3    97.2    -      -       +      +
    416A  TRP*     1.3    60.6    +      -       -      +
    417A  VAL      3.2     0.6    +      -       -      -
    418A  ASP*     3.4    19.8    +      -       -      +
    419A  CYS*     3.4    15.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 416 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203A  VAL*     3.7    11.1    -      -       +      +
    204A  TRP*     3.3    28.5    -      +       -      +
    250A  PRO      4.8     1.6    -      -       -      -
    251A  PHE*     3.7    45.9    -      +       +      -
    253A  ASN*     4.0     7.9    -      -       -      -
    255A  ARG*     3.8    27.4    -      -       +      -
    256A  HIS*     3.5    28.0    -      -       +      -
    259A  CYS*     3.4    26.3    -      -       -      -
    405A  ASN*     3.4    33.4    +      -       +      +
    408A  ARG*     5.5     1.9    -      -       -      +
    412A  VAL*     3.4    23.3    -      -       +      +
    413A  ALA*     3.0    13.1    +      -       -      +
    415A  PRO*     1.3    77.9    -      -       -      +
    417A  VAL*     1.3    64.3    +      -       +      +
    419A  CYS*     3.0    10.3    +      -       +      +
    420A  LEU*     2.9    22.0    +      -       -      +
    900A  PCG      6.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 417 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406A  GLU*     3.5    12.8    -      -       -      +
    413A  ALA      4.3     4.5    -      -       -      +
    414A  GLU      3.2    11.1    +      -       -      +
    416A  TRP*     1.3    77.4    -      -       +      +
    418A  ASP*     1.3    62.9    +      -       -      +
    420A  LEU*     3.1    10.2    +      -       +      +
    421A  LEU*     3.0    30.4    +      -       +      +
    449A  LYS*     3.9    31.6    -      -       +      +
    452A  ALA*     4.9     2.2    -      -       +      -
    453A  GLN*     3.4    42.8    -      -       +      +
    490A  TYR*     3.6    14.1    -      -       -      +
    900A  PCG      5.0     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 418 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    414A  GLU*     3.9     9.0    -      -       -      +
    415A  PRO*     3.4    11.3    +      -       +      +
    416A  TRP      3.3     0.4    -      -       -      -
    417A  VAL*     1.3    76.4    -      -       -      +
    419A  CYS*     1.3    57.4    +      -       -      +
    421A  LEU*     3.6     6.0    +      -       -      +
    422A  GLU*     3.0    31.3    +      -       -      +
    449A  LYS*     3.0    42.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 419 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204A  TRP*     4.4    16.8    -      -       -      -
    250A  PRO*     3.1    34.1    -      -       -      +
    251A  PHE*     3.8     9.8    -      -       +      +
    415A  PRO      3.4    13.9    +      -       -      -
    416A  TRP*     3.0    16.4    +      -       +      +
    418A  ASP*     1.3    76.5    -      -       -      +
    420A  LEU*     1.3    66.5    +      -       -      +
    422A  GLU*     3.3    15.5    +      -       -      +
    423A  GLU*     3.2    18.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 420 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  PHE*     3.6    31.4    -      -       +      -
    252A  HIS*     5.0     4.3    -      -       +      -
    416A  TRP      2.9    13.1    +      -       -      +
    417A  VAL*     3.5    12.3    -      -       +      +
    419A  CYS*     1.3    75.9    -      -       -      +
    421A  LEU*     1.3    63.8    +      -       +      +
    423A  GLU*     3.1     7.2    +      -       +      +
    424A  TYR*     2.9    65.1    +      -       +      +
    453A  GLN*     4.9     1.3    -      -       -      +
    900A  PCG      3.3    65.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 421 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417A  VAL*     3.0    21.0    +      -       +      +
    418A  ASP*     4.1     4.9    -      -       -      +
    420A  LEU*     1.3    76.2    -      -       +      +
    422A  GLU*     1.3    60.7    +      -       -      +
    424A  TYR*     3.9    26.5    -      -       +      -
    425A  PHE*     2.8    58.6    +      -       +      -
    447A  VAL*     3.9    22.0    -      -       +      +
    448A  THR*     4.0     7.9    -      -       -      +
    449A  LYS*     3.8    37.5    -      -       +      +
    452A  ALA*     4.3    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 422 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250A  PRO*     3.8    23.7    -      -       +      +
    418A  ASP*     3.0    18.0    +      -       -      +
    419A  CYS*     3.3    17.5    -      -       -      +
    421A  LEU*     1.3    75.7    -      -       -      +
    423A  GLU*     1.3    57.3    +      -       -      +
    425A  PHE*     4.0     4.9    -      -       -      +
    426A  MET*     3.1    40.9    +      -       +      +
    444A  ARG*     6.3     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 423 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249A  ASN*     3.3     9.0    -      -       -      +
    250A  PRO*     3.5    11.0    -      -       +      +
    251A  PHE*     2.8    33.1    +      -       +      -
    252A  HIS*     2.3    43.8    +      -       -      +
    296A  HIS*     3.9     1.2    -      -       -      -
    298A  GLY*     3.5    36.6    -      -       -      +
    419A  CYS      3.2     6.3    +      -       -      +
    420A  LEU*     3.1     9.7    +      -       +      +
    422A  GLU*     1.3    78.2    -      -       -      +
    424A  TYR*     1.3    69.4    +      -       +      +
    426A  MET*     3.3     9.6    +      -       +      +
    427A  GLN*     3.1    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 424 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252A  HIS*     5.9     2.9    -      +       -      -
    300A  ASN*     6.0     0.2    -      -       -      -
    420A  LEU*     2.9    47.2    +      -       +      +
    421A  LEU*     3.7    22.9    -      -       +      +
    423A  GLU*     1.3    82.3    -      -       +      +
    425A  PHE*     1.3    61.1    +      -       +      +
    427A  GLN*     3.5     4.2    +      -       -      +
    428A  SER*     3.0    29.1    +      -       -      -
    441A  PHE*     3.8    43.2    -      +       -      -
    442A  MET*     3.6    34.9    -      -       +      +
    452A  ALA*     6.1     1.6    -      -       +      -
    900A  PCG      2.5    42.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 425 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    421A  LEU*     2.8    44.4    +      -       +      +
    422A  GLU*     4.1     4.7    -      -       -      +
    424A  TYR*     1.3    74.8    -      -       +      +
    426A  MET*     1.3    67.1    +      -       -      +
    428A  SER*     3.7     2.9    -      -       -      -
    429A  ASP*     3.0    32.8    +      -       -      -
    442A  MET      3.3    16.8    -      -       -      -
    443A  ASP      4.0     2.5    -      -       -      -
    444A  ARG*     3.5    71.8    -      -       +      +
    447A  VAL*     4.0    34.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 426 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250A  PRO*     3.9    27.8    -      -       +      -
    298A  GLY      5.5     2.9    -      -       -      +
    299A  TYR*     3.7    27.5    -      -       +      +
    422A  GLU*     3.1    27.3    +      -       +      +
    423A  GLU*     3.5    11.4    -      -       -      +
    425A  PHE*     1.3    79.2    -      -       -      +
    427A  GLN*     1.3    62.2    +      -       -      +
    429A  ASP*     3.8     5.2    -      -       -      +
    430A  ARG*     3.3    21.1    +      -       -      +
    444A  ARG*     5.6     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 427 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  GLY      4.5     0.9    -      -       -      +
    299A  TYR*     3.4    27.8    -      -       +      -
    300A  ASN*     2.8    58.9    +      -       -      +
    302A  THR*     4.8     0.6    -      -       -      -
    303A  TYR*     3.7     8.9    -      -       +      +
    423A  GLU      3.1    12.0    +      -       -      +
    424A  TYR*     3.7     5.9    -      -       -      +
    426A  MET*     1.3    81.2    -      -       -      +
    428A  SER*     1.3    58.4    +      -       -      +
    430A  ARG*     3.2     4.2    +      -       -      +
    431A  GLU*     2.8    55.1    +      -       +      +
    442A  MET*     3.6    17.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 428 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424A  TYR      3.0    12.3    +      -       -      -
    425A  PHE*     3.4     7.4    +      -       -      -
    427A  GLN*     1.3    73.4    -      -       -      +
    429A  ASP*     1.3    68.0    +      -       -      +
    431A  GLU*     3.2    15.5    -      -       -      +
    432A  LYS*     3.0    36.6    +      -       -      +
    438A  VAL*     3.7    14.7    -      -       -      +
    442A  MET*     2.9    36.7    +      -       -      -
    443A  ASP*     4.4     1.3    -      -       -      -
    444A  ARG*     4.2     6.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 429 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425A  PHE      3.0    21.1    +      -       -      +
    426A  MET*     3.8     5.9    -      -       -      +
    428A  SER*     1.3    80.9    +      -       -      +
    430A  ARG*     1.3    54.0    +      -       -      +
    432A  LYS*     3.1    13.6    +      -       -      +
    433A  SER*     2.8    34.0    +      -       -      -
    444A  ARG*     2.5    42.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 430 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  TYR*     3.2    50.4    +      -       +      -
    303A  TYR*     3.0    30.6    +      -       +      +
    426A  MET      3.3    10.4    +      -       -      +
    427A  GLN      3.2     8.7    +      -       -      +
    429A  ASP*     1.3    77.0    -      -       -      +
    431A  GLU*     1.3    67.0    +      -       -      +
    433A  SER*     3.1     8.0    +      -       -      -
    434A  GLU*     2.8    55.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 431 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  THR*     4.8     6.6    -      -       -      +
    303A  TYR*     3.9    26.2    +      -       +      +
    306A  ASN*     5.3     1.8    +      -       +      +
    427A  GLN*     2.8    46.2    +      -       -      +
    428A  SER*     3.2    25.9    +      -       -      +
    430A  ARG*     1.3    73.6    -      -       -      +
    432A  LYS*     1.3    61.6    +      -       -      +
    434A  GLU      3.6     0.2    -      -       -      -
    435A  GLY      3.0     4.0    +      -       -      -
    436A  LEU*     2.8    45.6    +      -       +      +
    437A  PRO      3.4    27.9    -      -       -      +
    438A  VAL*     3.9    10.0    -      -       +      -
    439A  ALA*     4.5     3.8    +      -       -      +
    442A  MET*     5.3     2.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 432 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    428A  SER*     3.0    21.7    +      -       -      +
    429A  ASP*     3.1    14.0    +      -       -      +
    431A  GLU*     1.3    74.7    -      -       -      +
    433A  SER*     1.3    65.1    +      -       -      +
    435A  GLY*     3.2    12.4    +      -       -      -
    436A  LEU      4.7     1.6    -      -       -      -
    438A  VAL*     3.7    24.0    -      -       +      +
    443A  ASP*     2.7    40.8    +      -       -      +
    444A  ARG*     4.7     8.3    -      -       -      +
    445A  ASP*     3.8    13.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 433 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    429A  ASP      2.8    15.9    +      -       -      -
    430A  ARG*     3.5    11.6    +      -       -      +
    432A  LYS*     1.3    74.5    -      -       -      +
    434A  GLU*     1.3    66.4    +      -       -      +
    435A  GLY      3.3     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 434 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303A  TYR*     2.8    23.9    +      -       -      -
    307A  ALA*     4.7     1.0    -      -       -      +
    430A  ARG*     2.8    52.9    +      -       +      +
    431A  GLU      4.2     1.3    -      -       -      +
    433A  SER*     1.3    80.2    -      -       -      +
    435A  GLY*     1.3    61.8    +      -       -      +
    436A  LEU*     3.2    26.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 435 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431A  GLU      3.0     3.9    +      -       -      -
    432A  LYS*     3.2     9.9    +      -       -      -
    433A  SER      3.3     1.6    +      -       -      -
    434A  GLU*     1.3    78.9    -      -       -      +
    436A  LEU*     1.3    64.0    +      -       -      +
    437A  PRO*     4.1     1.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il