Contacts of the helix formed by residues 636 - 658 (chain D) in PDB entry 1JFZ


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 TYR 636 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    623D  LYS      3.3     8.1    -      -       -      +
    624D  ALA      3.5    18.8    -      -       -      +
    626D  THR      2.8    24.8    +      -       -      -
    627D  HIS*     3.0    45.0    +      +       +      -
    628D  VAL*     4.8     3.8    -      -       +      -
    635D  HIS*     1.3    76.5    -      +       +      +
    637D  GLU*     1.3    60.8    +      -       +      +
    638D  THR      3.4     2.0    -      -       -      -
    639D  LEU*     3.1     7.7    +      -       -      +
    640D  GLU*     2.6    42.7    +      -       +      +
    704D  ILE*     3.3    23.2    -      -       +      +
    707D  ASP*     3.5    32.1    +      -       +      -
    708D  VAL*     3.8    20.0    -      -       +      -
    711D  ALA*     3.5    11.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 637 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462C  LYS      4.9     5.6    -      -       -      +
    463C  ARG*     4.6     5.6    -      -       -      +
    464C  GLU*     3.3    43.1    +      -       +      +
    467C  LEU*     6.0     0.4    -      -       +      -
    628D  VAL*     6.1     0.4    -      -       +      -
    635D  HIS*     2.9    34.9    +      -       +      +
    636D  TYR*     1.3    86.8    -      -       +      +
    638D  THR*     1.3    68.5    +      -       -      +
    640D  GLU*     3.1    16.5    +      -       +      +
    641D  PHE*     3.1    11.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 638 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456C  VAL*     3.4    29.6    -      -       +      +
    462C  LYS*     3.5    39.2    +      -       +      +
    467C  LEU*     5.3     5.6    -      -       +      -
    623D  LYS*     5.4    11.9    +      -       -      -
    635D  HIS*     4.9     1.6    +      -       -      -
    636D  TYR      3.4     0.2    -      -       -      -
    637D  GLU*     1.3    78.4    -      -       -      +
    639D  LEU*     1.3    63.6    +      -       +      +
    641D  PHE*     2.9    31.4    +      -       +      +
    642D  LEU*     3.3     6.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 639 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    620D  LEU*     3.9    18.6    -      -       +      +
    623D  LYS*     3.9    24.9    -      -       +      +
    624D  ALA*     3.6    35.2    -      -       +      +
    635D  HIS      5.3     0.2    +      -       -      -
    636D  TYR*     3.1    10.6    +      -       -      +
    638D  THR*     1.3    81.9    -      -       +      +
    640D  GLU*     1.3    57.1    +      -       -      +
    642D  LEU*     3.5     3.3    +      -       +      +
    643D  GLY*     2.9    22.9    +      -       -      -
    711D  ALA*     3.9    13.6    -      -       +      +
    714D  ALA*     3.0    13.2    -      -       +      +
    715D  ALA*     4.3    15.7    -      -       +      +
    718D  ILE*     3.5    31.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 640 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    464C  GLU*     5.3     4.1    -      -       -      +
    636D  TYR*     2.6    31.1    +      -       +      +
    637D  GLU*     3.4    10.8    -      -       +      +
    639D  LEU*     1.3    70.2    -      -       -      +
    641D  PHE*     1.3    72.7    +      -       -      +
    644D  ASP*     2.9    27.4    +      -       -      +
    707D  ASP*     3.2    26.1    -      -       +      +
    710D  GLU*     2.4    12.3    -      -       -      +
    711D  ALA*     3.9    11.6    -      -       -      +
    764D   MN      2.4    35.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 641 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    452C  VAL*     3.9    28.9    -      -       +      +
    455C  LEU*     4.8     9.4    -      -       +      -
    456C  VAL*     4.8     8.3    -      -       +      -
    464C  GLU*     2.8    43.1    -      -       -      +
    467C  LEU*     3.4    48.9    -      -       +      -
    468C  SER*     4.4     7.4    -      -       -      -
    471C  LYS*     4.1    23.6    -      -       +      -
    637D  GLU      3.1     3.1    +      -       -      +
    638D  THR*     2.9    19.6    +      -       +      +
    640D  GLU*     1.3    87.9    -      -       -      +
    642D  LEU*     1.3    60.6    +      -       -      +
    644D  ASP*     3.6    17.1    +      -       -      +
    645D  ALA*     3.7     3.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 642 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    449C  PHE*     4.3    16.2    -      -       +      -
    452C  VAL*     3.8    11.9    -      -       +      -
    453C  ASP*     3.6    35.2    -      -       +      +
    456C  VAL*     3.8    24.4    -      -       +      +
    638D  THR      3.3     6.2    +      -       -      +
    639D  LEU*     3.9     7.6    -      -       +      +
    641D  PHE*     1.3    79.8    -      -       -      +
    643D  GLY*     1.3    64.5    +      -       -      +
    645D  ALA*     3.1     4.9    +      -       -      +
    646D  LEU*     2.9    21.9    +      -       +      +
    714D  ALA*     4.3     4.7    -      -       +      -
    717D  TYR*     4.0    21.5    -      -       +      -
    718D  ILE*     4.3    15.5    -      -       +      -
    722D  ARG*     3.9    14.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 643 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    639D  LEU      2.9    10.5    +      -       -      -
    640D  GLU      3.2     2.0    +      -       -      -
    642D  LEU*     1.3    75.9    -      -       -      +
    644D  ASP*     1.3    54.4    +      -       -      +
    646D  LEU*     3.0     7.1    +      -       -      +
    647D  VAL*     2.6    37.9    +      -       -      +
    710D  GLU*     3.1    32.5    -      -       -      -
    713D  TRP      5.3     0.2    -      -       -      -
    714D  ALA*     3.5     9.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 644 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    448C  ASN*     5.7     2.0    +      -       -      -
    471C  LYS*     5.5     6.2    -      -       -      -
    640D  GLU*     2.9    21.6    +      -       -      +
    641D  PHE*     3.6    10.6    -      -       -      +
    643D  GLY*     1.3    74.5    -      -       -      +
    645D  ALA*     1.3    59.4    +      -       -      +
    647D  VAL*     4.5     0.6    -      -       -      +
    648D  ASN*     3.0    33.4    +      -       -      +
    675D  ILE*     6.0     2.3    -      -       -      +
    680D  PHE*     5.9     0.2    -      -       -      -
    710D  GLU*     3.2    30.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 645 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    445C  ALA      4.5     1.4    -      -       -      +
    448C  ASN*     3.8    22.2    -      -       -      +
    449C  PHE*     3.8    16.4    -      -       -      +
    452C  VAL*     3.7    33.4    -      -       +      -
    471C  LYS*     5.9     0.2    -      -       -      -
    641D  PHE      3.7     1.7    +      -       -      +
    642D  LEU*     3.1    10.8    +      -       +      +
    644D  ASP*     1.3    81.4    -      -       -      +
    646D  LEU*     1.3    61.4    +      -       -      +
    648D  ASN*     3.7     5.0    +      -       -      +
    649D  PHE*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 646 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    449C  PHE*     4.0    32.7    -      -       +      -
    642D  LEU*     2.9    14.7    +      -       +      +
    643D  GLY*     3.2     8.5    -      -       -      +
    645D  ALA*     1.3    74.7    -      -       -      +
    647D  VAL*     1.3    67.5    +      -       -      +
    649D  PHE*     3.3     5.3    +      -       +      +
    650D  PHE*     3.1    62.5    +      -       +      -
    713D  TRP*     3.1    38.4    -      -       +      +
    714D  ALA*     3.9     2.9    -      -       -      +
    717D  TYR*     3.6    26.0    -      -       +      -
    724D  ALA*     5.5     0.4    -      -       +      -
    727D  THR*     4.6     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 647 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    643D  GLY      2.6    20.6    +      -       -      +
    644D  ASP      4.5     0.7    -      -       -      +
    646D  LEU*     1.3    75.0    -      -       -      +
    648D  ASN*     1.3    61.4    +      -       -      +
    650D  PHE*     3.1     8.5    +      -       +      +
    651D  ILE*     2.8    47.7    +      -       +      +
    675D  ILE*     5.9     0.2    -      -       +      -
    680D  PHE*     3.3    34.5    -      -       +      -
    709D  PHE*     4.6     3.6    -      -       +      -
    710D  GLU*     4.9     7.2    -      -       +      -
    713D  TRP*     3.7    33.0    -      -       +      -
    731D  PHE*     3.9    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 648 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    444C  ASP*     5.5     1.8    +      -       -      -
    445C  ALA*     3.6    26.9    -      -       -      +
    448C  ASN*     4.4    11.3    -      -       -      +
    644D  ASP*     3.0    24.8    +      -       -      +
    645D  ALA*     3.7     7.0    +      -       -      +
    647D  VAL*     1.3    78.9    -      -       -      +
    649D  PHE*     1.3    58.0    +      -       -      +
    651D  ILE*     3.1     7.0    +      -       -      +
    652D  VAL*     2.7    35.5    +      -       -      +
    671D  LYS*     3.2    27.3    +      -       -      +
    675D  ILE*     4.0    21.4    -      -       +      +
    680D  PHE*     5.6     0.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 649 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    442C  LEU*     4.7     5.6    -      -       +      -
    445C  ALA*     3.9    23.1    -      -       -      +
    446C  LEU*     4.1    24.0    -      -       +      -
    449C  PHE*     4.1    24.5    -      +       +      -
    517C  TYR*     3.6    41.3    -      +       -      -
    524C  ALA*     4.0    22.0    -      -       +      -
    645D  ALA      3.2    11.6    +      -       -      +
    646D  LEU*     3.3     6.5    +      -       +      +
    648D  ASN*     1.3    79.5    -      -       -      +
    650D  PHE*     1.3    97.8    +      +       -      +
    652D  VAL*     3.7     0.2    -      -       -      +
    653D  ASP*     2.9    31.8    +      -       +      +
    724D  ALA*     5.0     1.8    -      -       +      -
    728D  ARG*     4.6     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 650 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    646D  LEU*     3.1    36.7    +      -       +      -
    647D  VAL*     3.1    14.4    +      -       +      +
    649D  PHE*     1.3   106.6    -      +       -      +
    651D  ILE*     1.3    59.8    +      -       -      +
    653D  ASP*     4.8     0.4    -      -       -      -
    654D  LEU*     3.4     6.6    +      -       -      +
    713D  TRP*     5.0     2.2    -      +       -      -
    724D  ALA*     3.9     7.4    -      -       -      -
    727D  THR*     3.6    27.6    -      -       +      -
    728D  ARG*     3.6    34.5    -      -       +      -
    731D  PHE*     3.7    41.7    -      +       +      -
    732D  TYR*     2.7    33.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 651 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    647D  VAL*     2.8    46.6    +      -       +      +
    648D  ASN      3.6     5.6    -      -       -      +
    650D  PHE*     1.3    74.3    -      -       -      +
    652D  VAL*     1.3    71.2    +      -       +      +
    653D  ASP      3.2     0.2    -      -       -      -
    654D  LEU*     3.3     5.8    +      -       -      +
    655D  LEU*     3.1    25.1    +      -       +      +
    671D  LYS*     5.2     2.9    -      -       +      +
    674D  LEU*     3.7    45.8    -      -       +      +
    675D  ILE*     4.0    17.5    -      -       +      -
    679D  PHE*     5.5     0.2    -      -       +      -
    680D  PHE*     4.9     1.3    -      -       +      -
    683D  LEU*     5.9     0.2    -      -       +      -
    731D  PHE*     3.5    25.8    -      -       +      -
    739D  ILE*     3.8    17.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 652 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    441C  PHE*     3.4    38.1    -      -       +      +
    442C  LEU*     3.8    13.9    -      -       +      -
    445C  ALA*     3.3    27.8    -      -       +      -
    648D  ASN*     2.7    39.4    +      -       -      +
    649D  PHE      3.7     1.3    -      -       -      +
    651D  ILE*     1.3    78.9    -      -       +      +
    653D  ASP*     1.3    62.5    -      -       -      +
    655D  LEU*     3.4     8.3    +      -       -      +
    656D  VAL*     3.1    22.6    +      -       +      +
    671D  LYS*     4.3    18.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 653 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    442C  LEU*     3.7    16.6    -      -       +      +
    517C  TYR*     2.8    37.0    +      -       -      -
    522C  ARG*     3.0    38.7    +      -       -      -
    649D  PHE*     2.9    22.6    +      -       +      +
    650D  PHE*     4.8     0.2    -      -       -      -
    652D  VAL*     1.3    75.9    -      -       -      +
    654D  LEU*     1.3    66.9    +      -       -      +
    656D  VAL*     3.5     5.3    +      -       -      +
    657D  GLN*     3.2    25.4    +      -       -      +
    728D  ARG*     4.8     2.1    +      -       -      -
    732D  TYR*     3.6    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 654 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    650D  PHE      3.4     5.9    +      -       -      +
    651D  ILE*     3.3     8.6    +      -       -      +
    653D  ASP*     1.3    78.7    -      -       -      +
    655D  LEU*     1.3    54.0    +      -       -      +
    657D  GLN*     2.9    11.9    +      -       -      +
    658D  TYR*     2.8    44.5    +      -       +      -
    732D  TYR*     3.4    45.8    -      -       +      +
    736D  LYS*     3.8    44.6    -      -       +      +
    739D  ILE*     4.2    28.3    -      -       +      -
    740D  LEU*     3.9    14.6    -      -       +      -
    743D  ILE*     4.4     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 655 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    441C  PHE*     4.0    13.9    -      -       +      -
    651D  ILE*     3.1    10.6    +      -       +      +
    652D  VAL*     3.4    11.9    -      -       -      +
    654D  LEU*     1.3    79.3    -      -       -      +
    656D  VAL*     1.3    63.2    +      -       +      +
    657D  GLN      3.2     0.5    +      -       -      -
    659D  SER*     3.0    46.7    +      -       -      +
    667D  LEU*     3.6    30.9    -      -       +      +
    670D  LEU*     3.9    23.8    -      -       +      -
    671D  LYS*     3.7    26.5    -      -       +      +
    674D  LEU*     4.0    15.0    -      -       +      -
    739D  ILE*     5.6     0.2    -      -       -      +
    743D  ILE*     3.9    12.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 656 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    438C  THR*     3.6    28.5    -      -       +      +
    439C  LEU*     6.1     2.0    -      -       +      -
    441C  PHE*     3.9    25.4    -      -       +      -
    442C  LEU*     4.2    28.0    -      -       +      -
    518C  ILE*     5.9     3.1    -      -       +      -
    522C  ARG*     5.1     6.1    -      -       -      +
    652D  VAL*     3.1    17.3    +      -       +      +
    653D  ASP*     4.1     5.4    -      -       -      +
    654D  LEU      3.2     0.6    +      -       -      -
    655D  LEU*     1.3    77.8    -      -       -      +
    657D  GLN*     1.3    51.4    +      -       +      +
    662D  LYS*     2.5    36.9    +      -       -      +
    667D  LEU*     4.4     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 657 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    522C  ARG*     3.3    51.5    +      -       -      +
    653D  ASP*     3.2    24.2    +      -       -      +
    654D  LEU*     2.9    14.6    +      -       -      +
    656D  VAL*     1.3    80.1    -      -       +      +
    658D  TYR*     1.3    86.2    +      -       +      +
    659D  SER      3.5     2.2    +      -       -      +
    662D  LYS*     4.2     8.7    +      -       -      +
    732D  TYR*     5.2     2.6    +      -       -      -
    736D  LYS*     5.8     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 658 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    654D  LEU*     2.8    33.2    +      -       +      +
    655D  LEU      3.9     1.1    -      -       -      -
    657D  GLN*     1.3    96.8    +      -       +      +
    659D  SER*     1.3    57.8    +      -       -      +
    660D  PRO*     4.1     2.3    -      -       -      +
    736D  LYS*     3.3    32.7    +      -       -      -
    740D  LEU*     3.4    45.7    -      -       +      +
    743D  ILE*     2.9    26.6    -      -       +      +
    744D  LYS*     5.5     0.7    +      -       -      -
----------------------------------------------------------
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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