Contacts of the helix formed by residues 427 - 448 (chain C) in PDB entry 3L0I


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 427 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425C  GLU*     2.8    10.5    +      -       -      -
    426C  SER*     1.3    80.5    +      -       -      +
    428C  VAL*     1.3    69.4    +      -       +      +
    429C  GLU      3.7     0.4    -      -       -      -
    430C  PRO*     4.1     0.9    -      -       -      -
    431C  GLY*     3.2    19.6    +      -       -      -
      7D  GLU*     5.0     6.6    +      -       -      -
     34D  ASP*     3.3    24.2    +      -       -      +
     36D  TYR*     3.2    42.9    -      -       +      -
     48D  PHE*     4.3     4.6    -      -       -      -
     61D  LYS*     4.1     8.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 428 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425C  GLU*     2.4    26.0    +      -       +      +
    427C  THR*     1.3    70.7    -      -       +      +
    429C  GLU*     1.3    60.9    +      -       -      +
    431C  GLY*     3.2     1.2    +      -       -      -
    432C  LEU*     2.9    43.4    +      -       +      +
    483C  SER*     4.0     5.2    -      -       -      +
    484C  LYS      3.5    26.5    -      -       -      +
    485C  ILE*     3.6    17.0    -      -       +      -
    486C  TRP      5.8     0.2    -      -       -      +
     36D  TYR*     3.6    46.4    -      -       +      +
     38D  GLU*     4.1     0.9    -      -       -      +
     41D  ILE*     4.6     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 429 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    416C  TYR*     2.5    35.4    +      -       +      +
    420C  ALA*     3.6    15.6    -      -       +      +
    425C  GLU*     3.3     3.2    +      -       -      +
    428C  VAL*     1.3    75.6    -      -       -      +
    430C  PRO*     1.4    73.2    -      -       +      +
    432C  LEU*     3.3     4.8    +      -       +      +
    433C  VAL*     2.9    29.6    +      -       +      +
    475C  ILE*     6.2     0.4    -      -       +      -
    485C  ILE*     3.6    27.7    -      -       +      +
    493C  LEU*     5.0     0.4    -      -       -      -
    494C  MSE      3.7     3.0    -      -       +      +
    497C  LYS*     2.6    30.6    +      -       -      +
    522C  LYS*     2.7    37.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 430 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417C  SER*     3.3    34.6    +      -       -      +
    420C  ALA*     3.7    24.5    -      -       +      +
    421C  ALA*     3.7     7.0    -      -       +      +
    425C  GLU*     4.1     1.6    -      -       -      +
    426C  SER      3.7    29.4    -      -       -      +
    427C  THR      4.0     0.2    -      -       -      +
    428C  VAL      3.9     0.2    -      -       -      -
    429C  GLU*     1.4    93.9    -      -       +      +
    431C  GLY*     1.3    52.9    +      -       -      +
    434C  SER*     2.8    40.0    +      -       -      -
     48D  PHE*     3.6    15.0    -      -       +      -
     63D  GLN*     4.2     5.4    -      -       -      +
     65D  TRP*     4.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 431 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427C  THR      3.2    13.7    +      -       -      -
    428C  VAL      3.2     6.6    +      -       -      -
    429C  GLU      3.1     0.8    -      -       -      -
    430C  PRO*     1.3    79.3    -      -       -      +
    432C  LEU*     1.3    62.4    +      -       -      +
    434C  SER*     3.7     2.1    -      -       -      -
    435C  ALA*     3.0    23.6    +      -       -      +
     41D  ILE*     3.7    11.7    -      -       -      -
     46D  VAL*     3.7    13.9    -      -       -      +
     48D  PHE*     3.7    14.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 432 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    428C  VAL*     2.9    36.9    +      -       +      +
    429C  GLU*     3.8     3.4    -      -       -      +
    431C  GLY*     1.3    71.8    -      -       -      +
    433C  VAL*     1.3    63.0    +      -       -      +
    435C  ALA*     3.2     4.9    +      -       -      +
    436C  VAL*     3.2    26.1    +      -       -      +
    475C  ILE*     4.0    26.9    -      -       +      +
    478C  VAL*     5.3     1.3    -      -       +      -
    479C  ALA*     4.6     7.0    -      -       +      -
    485C  ILE*     4.6     5.4    -      -       +      -
    490C  THR*     3.8    28.7    -      -       +      -
     38D  GLU*     3.7    27.6    -      -       +      +
     40D  TYR*     4.3    16.9    -      -       +      -
     41D  ILE*     3.5    20.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 433 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    413C  ALA*     3.5    19.4    -      -       +      +
    416C  TYR*     3.6    46.0    -      -       +      -
    417C  SER*     3.5    28.0    -      -       -      +
    429C  GLU*     2.9    26.8    +      -       +      +
    430C  PRO      3.9     2.9    -      -       -      +
    432C  LEU*     1.3    76.2    -      -       +      +
    434C  SER*     1.3    62.5    +      -       -      +
    436C  VAL*     3.3     6.7    +      -       -      +
    437C  ASN*     3.1    19.2    +      -       -      +
    471C  ILE*     4.7     4.5    -      -       +      -
    475C  ILE*     3.9    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 434 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417C  SER*     2.7    26.4    +      -       -      -
    430C  PRO      2.8    17.1    +      -       -      -
    431C  GLY      3.7     3.6    -      -       -      -
    433C  VAL*     1.3    72.2    -      -       -      +
    435C  ALA*     1.3    52.2    +      -       -      +
    437C  ASN*     3.1     9.4    +      -       -      +
    438C  LYS*     2.8    36.0    +      -       -      +
     45D  GLY      4.6     1.3    -      -       -      -
     46D  VAL*     4.0     2.0    -      -       -      -
     47D  ASP*     2.8    40.4    +      -       -      +
     48D  PHE*     3.3    11.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 435 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431C  GLY      3.0    13.9    +      -       -      +
    432C  LEU      3.3     7.4    -      -       -      +
    433C  VAL      3.2     0.2    -      -       -      -
    434C  SER*     1.3    73.3    -      -       -      +
    436C  VAL*     1.3    66.3    +      -       -      +
    438C  LYS*     3.0    14.4    +      -       -      +
    439C  MSE      3.0    10.7    +      -       -      +
     40D  TYR*     3.2    32.6    +      -       +      -
     41D  ILE*     4.1     7.9    -      -       +      -
     44D  ILE*     3.5    16.8    -      -       +      +
     45D  GLY      3.6    15.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 436 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369C  LEU*     3.8    26.5    -      -       +      -
    409C  LEU*     4.8     4.5    -      -       +      -
    413C  ALA*     5.5     0.7    -      -       +      -
    432C  LEU      3.2    13.1    +      -       -      +
    433C  VAL      3.3     8.0    +      -       -      +
    435C  ALA*     1.3    74.5    -      -       -      +
    437C  ASN*     1.3    65.0    +      -       -      +
    439C  MSE      3.1    13.6    +      -       -      +
    440C  SER*     3.2    12.8    +      -       -      -
    471C  ILE*     4.4    23.3    -      -       +      -
    474C  PHE*     3.5    29.4    -      -       +      -
    475C  ILE*     3.8    21.1    -      -       +      -
     40D  TYR*     3.4    12.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 437 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409C  LEU*     5.0     5.1    -      -       -      +
    410C  TRP*     3.8    26.7    -      -       -      +
    413C  ALA*     4.0    26.9    -      -       +      +
    414C  SER*     4.9     3.8    +      -       -      -
    433C  VAL      3.1    12.7    +      -       -      +
    434C  SER*     3.2    13.9    -      -       -      +
    436C  VAL*     1.3    77.5    -      -       -      +
    438C  LYS*     1.3    62.5    +      -       -      +
    439C  MSE      3.3     0.2    +      -       -      -
    440C  SER*     3.3     6.1    +      -       -      -
    441C  ALA*     3.0    20.5    +      -       -      +
     47D  ASP*     3.5    14.1    -      -       -      +
     67D  THR*     3.9     8.8    -      -       -      +
     68D  ALA*     3.1    20.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 438 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434C  SER      2.8    14.9    +      -       -      +
    435C  ALA      3.0     8.7    +      -       -      +
    437C  ASN*     1.3    72.7    -      -       -      +
    439C  MSE      1.3    53.5    +      -       -      +
    441C  ALA*     3.1     5.0    +      -       -      +
    442C  PHE*     2.7    33.8    +      -       -      +
     44D  ILE*     3.1    32.6    -      -       +      +
     45D  GLY*     3.1    22.4    -      -       -      +
     46D  VAL      3.3    26.2    +      -       -      +
     47D  ASP*     4.5     3.8    -      -       +      +
     68D  ALA*     3.7    24.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with MSE 439 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369C  LEU*     3.3    52.5    -      -       +      +
    372C  ALA*     4.1    14.8    -      -       +      +
    373C  ASN*     3.5    40.6    -      -       -      +
    376C  HIS*     4.7    11.9    -      -       +      +
    435C  ALA      3.0     4.7    +      -       -      +
    436C  VAL      3.1     9.2    +      -       -      +
    438C  LYS*     1.3    77.5    -      -       -      +
    440C  SER*     1.3    63.6    +      -       -      +
    442C  PHE*     3.0    19.4    +      -       +      +
    443C  PHE*     3.0    12.1    +      -       -      +
    474C  PHE*     3.6    11.2    -      -       +      -
     40D  TYR*     3.3    23.1    -      -       +      +
     44D  ILE*     4.1    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 440 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368C  TYR*     2.5    34.7    +      -       -      -
    369C  LEU*     5.0     2.0    -      -       -      -
    372C  ALA*     5.5     0.2    -      -       -      -
    406C  LEU*     3.3    16.3    +      -       -      +
    409C  LEU*     4.1    21.5    -      -       -      +
    436C  VAL      3.2     7.9    +      -       -      -
    437C  ASN*     3.8     9.4    -      -       -      -
    439C  MSE      1.3    81.0    -      -       -      +
    441C  ALA*     1.3    61.8    +      -       -      +
    443C  PHE*     3.0    15.0    +      -       -      +
    444C  MSE      3.1    16.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 441 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    437C  ASN*     3.0    14.0    +      -       -      +
    438C  LYS*     3.3     9.9    -      -       +      +
    440C  SER*     1.3    75.6    -      -       -      +
    442C  PHE*     1.3    56.8    +      -       -      +
    444C  MSE      3.4    10.6    +      -       -      +
    445C  ASP*     2.9    39.0    +      -       -      +
     68D  ALA*     4.1     7.0    -      -       +      -
     69D  GLY*     3.7    34.1    -      -       -      +
     72D  ARG*     5.5     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 442 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372C  ALA*     5.2     2.5    -      -       +      -
    375C  LEU*     3.9    14.6    -      -       +      -
    376C  HIS*     3.5    53.8    -      +       +      +
    379C  MSE      3.9    21.1    -      -       +      -
    384C  LEU      5.4     1.6    -      -       -      -
    386C  GLU*     3.3    44.0    -      -       +      -
    438C  LYS      2.7    16.5    +      -       -      +
    439C  MSE      3.1    16.2    -      -       +      +
    441C  ALA*     1.3    71.9    -      -       -      +
    443C  PHE*     1.3    65.1    +      -       -      +
    445C  ASP*     3.1     8.2    +      -       -      +
    446C  CYS*     3.0    44.3    +      -       -      -
     44D  ILE*     4.7     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 443 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353C  TRP*     3.0    74.3    +      +       -      +
    356C  ALA*     3.8    28.0    -      -       +      -
    357C  ASN*     3.9    22.9    -      -       +      -
    360C  LEU*     3.7    21.3    -      -       +      -
    368C  TYR*     3.4    25.6    -      +       +      +
    372C  ALA*     4.6     7.4    -      -       +      -
    375C  LEU*     4.8     5.6    -      -       +      -
    398C  ILE*     3.7    17.9    -      -       +      -
    406C  LEU*     4.2     7.6    -      -       +      -
    439C  MSE      3.0     9.4    +      -       -      +
    440C  SER      3.0     9.5    +      -       -      +
    442C  PHE*     1.3    83.1    -      -       +      +
    444C  MSE      1.3    63.1    +      -       -      +
    446C  CYS*     3.5     6.1    +      -       -      -
    447C  LYS      3.8     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with MSE 444 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398C  ILE*     4.3    12.1    -      -       +      -
    403C  TYR*     3.3    36.1    -      -       +      -
    406C  LEU*     3.6    28.5    -      -       +      -
    440C  SER*     3.1    10.8    +      -       -      +
    441C  ALA*     3.7    11.4    -      -       -      +
    443C  PHE*     1.3    78.2    -      -       +      +
    445C  ASP*     1.3    55.6    +      -       -      +
    447C  LYS*     3.1     4.0    +      -       -      +
    448C  LEU*     2.8    41.9    +      -       +      +
    454C  ALA*     3.8     5.4    -      -       +      -
     69D  GLY*     6.0     0.9    -      -       -      -
     72D  ARG*     3.7    27.8    -      -       +      +
     73D  PHE*     3.2    39.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 445 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386C  GLU*     3.9    25.0    -      -       +      +
    390C  ARG*     2.8    34.6    +      -       -      +
    441C  ALA*     2.9    25.9    +      -       -      +
    442C  PHE*     3.1     8.6    +      -       -      +
    444C  MSE      1.3    72.9    -      -       -      +
    446C  CYS*     1.3    64.8    +      -       -      +
    448C  LEU      3.2     5.2    -      -       -      +
     71D  GLU*     4.8     1.9    -      -       -      +
     72D  ARG*     2.8    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 446 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353C  TRP*     3.7    14.4    -      -       +      +
    375C  LEU*     4.1     8.1    -      -       -      -
    379C  MSE      4.2     2.9    -      -       -      -
    386C  GLU*     4.2    15.7    -      -       -      -
    389C  LEU*     3.8    23.8    -      -       +      -
    390C  ARG*     3.0    33.1    +      -       -      +
    393C  LEU*     3.7     4.5    -      -       -      +
    442C  PHE*     3.0    47.7    +      -       -      -
    443C  PHE      3.6    11.0    -      -       -      +
    444C  MSE      3.2     0.2    -      -       -      -
    445C  ASP*     1.3    77.5    -      -       -      +
    447C  LYS*     1.3    56.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 447 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353C  TRP*     3.5    32.5    -      -       +      +
    390C  ARG*     3.4    15.7    +      -       -      +
    393C  LEU*     2.7    32.4    +      -       +      +
    394C  SER*     4.1     8.1    +      -       -      +
    396C  LYS      2.6    29.4    +      -       -      +
    397C  THR*     4.3    13.6    -      -       -      +
    398C  ILE*     4.5    12.8    -      -       +      +
    403C  TYR*     5.0     1.3    -      -       -      +
    443C  PHE      4.4     0.9    -      -       -      +
    444C  MSE      3.1     6.7    +      -       -      +
    446C  CYS*     1.3    81.4    -      -       -      +
    448C  LEU*     1.3    76.5    +      -       +      +
    452C  GLU*     5.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 448 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390C  ARG*     2.8    23.6    +      -       -      -
    398C  ILE*     5.4     0.2    -      -       +      -
    403C  TYR*     3.7    34.5    -      -       +      +
    444C  MSE      2.8    24.3    +      -       +      +
    445C  ASP      3.2     7.7    +      -       -      +
    447C  LYS*     1.3    93.4    -      -       +      +
    449C  SER*     1.3    60.7    +      -       -      +
    450C  PRO      4.0     0.2    -      -       -      -
    452C  GLU*     3.8    42.8    -      -       +      +
    453C  ARG      4.6     7.4    -      -       -      +
    454C  ALA      5.1     0.2    -      -       -      +
     72D  ARG*     3.6    33.7    +      -       -      +
----------------------------------------------------------
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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