Contacts of the helix formed by residues 64 - 87 (chain C) in PDB entry 1Y67


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 64 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  THR*     4.1    34.1    -      -       +      -
     48C  PHE*     4.6     4.7    -      -       +      -
     62C  ARG      4.6     1.1    -      -       -      +
     63C  VAL*     1.4    90.7    -      -       +      +
     65C  ALA*     1.3    59.3    +      -       -      +
     66C  ASP*     3.3    16.6    -      -       -      +
     67C  LYS*     3.0    28.4    +      -       +      +
     68C  LYS      3.3     7.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  VAL      3.4     4.0    +      -       -      -
     64C  PRO*     1.3    72.7    -      -       -      +
     66C  ASP*     1.3    61.4    +      -       -      +
     67C  LYS      3.1     1.3    +      -       -      -
     68C  LYS*     3.3    21.8    +      -       +      +
     69C  GLY      4.7     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  PRO*     3.7    17.5    -      -       -      +
     65C  ALA*     1.3    78.1    +      -       -      +
     67C  LYS*     1.3    80.0    +      -       -      +
     68C  LYS      3.6     0.2    -      -       -      -
     69C  GLY      5.2     0.8    +      -       -      -
     70C  ALA*     5.5     3.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  LYS      4.7     2.4    +      -       -      -
     42C  ALA*     2.9    37.4    +      -       +      +
     44C  GLU      3.1    19.4    +      -       -      -
     45C  GLY*     5.2     0.8    -      -       -      -
     46C  THR*     3.9     7.4    -      -       +      +
     64C  PRO*     3.0    24.2    +      -       +      +
     66C  ASP*     1.3   102.9    -      -       -      +
     68C  LYS*     1.3    60.2    +      -       -      +
     69C  GLY      3.4     2.7    -      -       -      -
     70C  ALA*     3.4     8.5    +      -       +      +
     71C  LEU*     2.9    48.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  LEU*     3.7    30.2    +      -       +      +
     61C  ASP*     4.8    10.0    -      -       -      +
     63C  VAL*     4.2     7.9    -      -       +      +
     64C  PRO      3.3     8.8    +      -       -      +
     65C  ALA*     3.3    18.0    +      -       -      +
     67C  LYS*     1.3    77.5    -      -       -      +
     69C  GLY*     1.3    58.6    +      -       -      +
     71C  LEU*     3.7     1.4    -      -       -      +
     72C  ARG*     2.8    40.6    +      -       +      +
    161C  ILE*     3.9    34.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  ALA      4.7     1.8    +      -       -      -
     66C  ASP      5.2     1.2    +      -       -      -
     67C  LYS      3.4     0.2    -      -       -      -
     68C  LYS*     1.3    78.8    -      -       -      +
     70C  ALA*     1.3    60.2    +      -       -      +
     72C  ARG*     3.6     7.9    -      -       -      +
     73C  ASN*     3.1    34.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  ASN      5.2     1.1    -      -       -      +
     42C  ALA*     4.1    17.5    -      -       +      -
     66C  ASP      5.5     1.9    +      -       -      +
     67C  LYS*     3.4    11.9    +      -       +      +
     69C  GLY*     1.3    75.0    -      -       -      +
     71C  LEU*     1.3    58.6    +      -       -      +
     73C  ASN*     4.8     2.0    -      -       -      +
     74C  ASN*     2.8    48.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 71 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39C  ALA*     4.0     7.0    -      -       -      +
     42C  ALA*     3.7    21.5    -      -       +      +
     43C  LEU*     3.7    38.4    -      -       +      -
     46C  THR*     5.4     2.0    -      -       +      -
     56C  LEU*     4.0    11.4    -      -       +      -
     57C  ILE*     4.9     0.3    -      -       -      +
     60C  LEU*     3.9    14.9    -      -       +      +
     63C  VAL*     3.9    34.8    -      -       +      -
     67C  LYS*     2.9    31.3    +      -       +      +
     68C  LYS*     3.9     2.7    -      -       -      +
     70C  ALA*     1.3    75.0    -      -       -      +
     72C  ARG*     1.3    61.5    +      -       -      +
     75C  ALA*     2.8    39.6    +      -       +      +
     76C  GLY      3.4     0.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 72 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  LEU*     3.9    18.5    -      -       +      +
     68C  LYS*     2.8    28.9    +      -       +      +
     69C  GLY*     3.6     8.3    -      -       -      +
     71C  LEU*     1.3    74.9    -      -       -      +
     73C  ASN*     1.3    68.2    +      -       -      +
     76C  GLY*     3.3    18.0    +      -       -      -
    152C  GLN*     4.0     3.8    -      -       -      +
    153C  ASP*     2.8    41.5    +      -       -      +
    157C  MET*     3.4    15.9    -      -       -      +
    161C  ILE*     3.2    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35C  TYR*     4.0     1.0    -      -       -      -
     69C  GLY*     3.1    20.0    +      -       -      +
     70C  ALA*     4.0     2.6    -      -       -      +
     72C  ARG*     1.3    89.6    +      -       -      +
     74C  ASN*     1.3    65.4    +      -       -      +
     77C  GLY*     3.1    18.9    +      -       -      -
    151C  ASN*     5.3     1.9    -      -       -      +
    152C  GLN*     3.4    17.1    +      -       -      +
    153C  ASP*     5.0     2.4    -      -       -      +
    130D  PHE*     3.5    56.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 74 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  THR*     5.2     0.2    -      -       -      +
     35C  TYR*     3.4    43.3    -      -       -      +
     38C  ASN*     3.4    34.4    +      -       -      +
     39C  ALA*     3.6    13.7    -      -       -      +
     70C  ALA*     2.8    43.1    +      -       -      +
     73C  ASN*     1.3    78.4    -      -       -      +
     75C  ALA*     1.3    58.4    +      -       -      +
     76C  GLY      3.3     0.9    -      -       -      -
     77C  GLY      3.2     0.5    +      -       -      -
     78C  HIS*     2.8    27.5    +      -       -      +
    130D  PHE*     4.8     4.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 75 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3C  TYR*     4.4     3.6    -      -       +      +
     39C  ALA*     4.0     8.4    -      -       +      +
     53C  VAL*     3.3    18.0    -      -       +      +
     56C  LEU*     3.6    31.2    -      -       +      -
     57C  ILE*     3.7    12.1    -      -       +      -
     60C  LEU*     5.6     0.4    -      -       +      -
     70C  ALA      4.1     0.2    +      -       -      -
     71C  LEU*     2.8    26.2    +      -       +      +
     74C  ASN*     1.3    71.8    -      -       -      +
     76C  GLY*     1.3    59.3    +      -       -      +
     78C  HIS*     3.4     1.3    +      -       -      -
     79C  ALA*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 76 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  ILE*     3.8     6.2    -      -       -      +
     71C  LEU      3.4     0.8    +      -       -      -
     72C  ARG      3.3    21.8    +      -       -      -
     74C  ASN      3.3     0.2    -      -       -      -
     75C  ALA*     1.3    76.4    -      -       -      +
     77C  GLY*     1.3    56.1    +      -       -      +
     79C  ALA*     3.3     3.1    +      -       -      -
     80C  ASN*     2.9    36.7    +      -       -      +
    152C  GLN      3.5    17.3    -      -       -      -
    157C  MET*     3.7    11.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 77 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35C  TYR*     3.8    17.2    -      -       -      -
     73C  ASN      3.1    18.4    +      -       -      -
     74C  ASN      3.2     4.6    +      -       -      -
     76C  GLY*     1.3    74.1    -      -       -      +
     78C  HIS*     1.3    60.8    +      -       -      +
     81C  HIS*     2.7    33.1    +      -       -      +
    152C  GLN*     3.5    21.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 78 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3C  TYR*     3.5    41.7    -      +       +      +
      4C  THR      3.5    22.9    +      -       -      -
      6C  PRO*     4.1     2.9    -      -       +      -
     32C  HIS*     2.9    30.5    +      -       -      +
     35C  TYR*     3.8     6.6    -      -       +      +
     36C  VAL*     3.6    14.6    -      -       +      +
     53C  VAL*     3.7    24.7    -      -       +      +
     74C  ASN      2.8    18.2    +      -       -      +
     75C  ALA*     3.7     6.3    -      -       -      +
     76C  GLY      3.3     0.2    -      -       -      -
     77C  GLY*     1.3    72.0    -      -       -      +
     79C  ALA*     1.3    62.4    +      -       -      +
     82C  SER*     2.9    47.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 79 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  VAL*     4.0    23.5    -      -       +      +
     54C  GLU*     4.7    12.0    -      -       +      +
     57C  ILE*     3.9    26.5    -      -       +      -
     75C  ALA      2.9    17.2    +      -       -      +
     76C  GLY      3.7     3.4    -      -       -      +
     78C  HIS*     1.3    77.6    -      -       -      +
     80C  ASN*     1.3    62.7    +      -       -      +
     82C  SER*     3.8     2.7    -      -       -      -
     83C  MET*     3.2    24.1    +      -       -      +
    154C  ASN*     4.5     7.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 80 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76C  GLY      2.9    17.7    +      -       -      +
     77C  GLY      3.9     0.4    -      -       -      +
     79C  ALA*     1.3    75.7    -      -       -      +
     81C  HIS*     1.3    58.1    +      -       -      +
     83C  MET*     3.3     5.9    +      -       -      +
     84C  PHE*     2.9    27.9    +      -       -      +
    134C  TRP*     3.4    31.7    -      -       +      +
    136C  TRP*     3.3    17.3    -      -       +      -
    152C  GLN*     3.0    47.9    +      -       -      +
    153C  ASP      3.7     5.1    +      -       -      -
    154C  ASN*     2.8    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 81 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  HIS*     3.0    27.8    +      +       -      -
     31C  HIS*     5.1     0.4    -      -       -      +
     32C  HIS*     3.5    28.7    -      +       +      +
     35C  TYR*     3.4    27.6    -      +       -      -
     77C  GLY      2.7    28.7    +      -       -      +
     80C  ASN*     1.3    72.2    -      -       -      +
     82C  SER*     1.3    65.6    +      -       -      +
     84C  PHE*     3.2     6.6    +      +       -      +
     85C  TRP*     3.0    42.9    +      +       -      +
    134C  TRP*     3.8     9.1    -      +       -      -
    152C  GLN*     3.6    18.2    -      -       -      -
    173C  ASP*     3.4     2.4    +      -       -      -
    177C  HIS*     4.0     0.4    +      -       -      -
    229C   FE      2.2    28.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 82 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  PRO*     3.8    10.3    -      -       -      +
     32C  HIS*     3.5     9.2    -      -       -      -
     53C  VAL*     5.5     1.3    -      -       -      -
     54C  GLU*     4.7    11.0    -      -       -      -
     78C  HIS*     2.9    45.0    +      -       -      -
     79C  ALA*     3.8     5.6    -      -       -      -
     81C  HIS*     1.3    77.1    -      -       -      +
     83C  MET*     1.3    63.1    +      -       -      +
     85C  TRP*     3.8     6.6    +      -       -      +
     86C  GLN*     3.5    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 83 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  GLU*     5.8     3.3    +      -       +      -
     79C  ALA      3.2    15.5    +      -       -      +
     80C  ASN*     3.6     4.9    -      -       -      +
     82C  SER*     1.3    77.2    -      -       -      +
     84C  PHE*     1.3    66.0    +      -       -      +
     86C  GLN*     3.0    14.2    +      -       -      +
     87C  ILE*     3.0    21.7    +      -       +      +
    136C  TRP*     4.0    25.8    -      -       +      -
    154C  ASN*     5.6     3.6    -      -       -      +
    156C  LEU*     5.8     3.6    -      -       +      -
    168C  PRO*     3.1    39.5    -      -       +      +
    169C  ILE      4.7     0.4    -      -       -      -
    170C  LEU      4.6     7.9    -      -       -      -
    171C  GLY      4.8     3.1    -      -       -      +
    206C  ARG*     2.9    46.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 84 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19C  ILE*     4.9     4.9    -      -       +      -
     24C  MET*     5.9     0.7    -      -       -      -
     27C  HIS*     4.0    22.2    -      +       -      -
     80C  ASN      2.9    18.1    +      -       -      +
     81C  HIS*     3.2     6.7    +      +       -      +
     83C  MET*     1.3    78.2    -      -       -      +
     85C  TRP*     1.3    86.1    +      +       -      +
     86C  GLN      3.3     0.2    +      -       -      -
     87C  ILE*     3.3    23.3    +      -       +      +
     88C  MET*     3.5    30.5    -      -       +      +
    134C  TRP*     3.8    22.0    -      +       +      -
    171C  GLY      3.5    17.3    -      -       -      -
    172C  VAL*     3.9     0.2    -      -       -      -
    173C  ASP*     3.7    16.8    -      -       +      -
    178C  ALA*     5.4     0.2    -      -       +      -
    190C  TYR*     3.7    21.5    -      -       -      -
    194C  PHE*     3.6    25.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with TRP 85 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  PRO*     4.4     9.0    -      -       +      -
      7C  GLN      5.8     0.7    -      -       -      +
      8C  LEU*     3.5    27.1    -      -       +      -
      9C  PRO*     3.8     9.8    -      -       +      +
     10C  TYR*     2.7    34.9    +      -       -      +
     24C  MET*     3.7    33.4    -      -       +      -
     27C  HIS*     3.5    39.9    -      +       +      -
     28C  HIS*     3.7    29.3    -      +       +      -
     32C  HIS*     2.9    28.4    +      +       -      -
     81C  HIS*     3.0    35.5    +      +       -      -
     82C  SER*     4.2     6.3    -      -       -      +
     83C  MET      3.3     0.4    -      -       -      -
     84C  PHE*     1.3    93.2    -      +       -      +
     86C  GLN*     1.3    63.4    +      -       +      +
     88C  MET*     3.5     9.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 86 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  PRO*     4.4    16.4    -      -       +      +
     82C  SER*     3.5    14.8    -      -       -      +
     83C  MET      3.0     8.1    +      -       -      +
     85C  TRP*     1.3    79.2    -      -       +      +
     87C  ILE*     1.3    58.8    +      -       -      +
     88C  MET      3.3     7.0    +      -       -      +
    199C  ASN*     4.2     4.0    +      -       -      +
    202C  GLU*     3.1    32.9    -      -       +      +
    206C  ARG*     2.6    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 87 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83C  MET*     3.0    23.8    +      -       +      +
     84C  PHE*     3.3    17.5    +      -       +      +
     86C  GLN*     1.3    75.3    -      -       -      +
     88C  MET*     1.3    63.5    +      -       +      +
    169C  ILE      3.7    22.9    -      -       -      +
    170C  LEU*     3.7    15.3    -      -       +      -
    171C  GLY      3.5    27.8    -      -       -      +
    194C  PHE*     3.9     5.2    -      -       +      -
    198C  VAL*     3.5     7.1    -      -       -      +
    199C  ASN*     2.7    29.1    +      -       -      -
    202C  GLU*     3.9     9.4    -      -       +      -
    203C  VAL*     4.1    13.0    -      -       +      -
    206C  ARG*     3.8    23.8    -      -       -      +
----------------------------------------------------------
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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