Contacts of the helix formed by residues 49 - 70 (chain E) in PDB entry 6DVD


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 SER 49 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    990D  ASP*     3.4    30.1    -      -       -      -
   1267D  TYR*     3.4    20.9    +      -       -      -
     44E  LEU*     4.5     3.1    -      -       -      -
     47E  VAL*     3.5    14.0    -      -       -      +
     48E  SER*     1.3    82.3    +      -       -      +
     50E  LYS*     1.3    64.3    +      -       -      +
     51E  TYR*     3.6     3.3    +      -       -      +
     52E  ALA*     3.2    21.2    +      -       -      +
     53E  LEU*     3.2    17.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 50 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    506D  ARG*     5.7     2.6    -      -       -      +
    557D  ILE*     4.3    19.2    +      -       +      +
    558D  LEU*     3.7    26.2    +      -       +      +
    563D  ASN*     3.6    28.5    +      -       -      +
    564D  ASN*     4.8     7.1    -      -       -      +
    706D  MET*     4.2    26.6    -      -       -      +
    984D  ALA      5.6     0.8    +      -       -      -
    985D  THR*     4.6    20.6    +      -       -      +
    987D  LYS*     5.4     1.3    -      -       -      +
    990D  ASP*     3.4    14.9    +      -       -      +
     40E  ILE*     6.0     2.0    -      -       -      -
     44E  LEU*     4.2    26.4    -      -       +      +
     49E  SER*     1.3    73.2    -      -       -      +
     51E  TYR*     1.3    66.1    +      -       +      +
     53E  LEU*     3.4    12.1    +      -       -      +
     54E  VAL*     3.4    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 51 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1078C  ALA      4.4     0.3    +      -       -      -
   1079C  TYR      3.1    30.6    +      -       -      -
   1080C  GLY*     3.7     2.9    +      -       -      -
    506D  ARG*     4.9     1.4    +      -       -      -
    558D  LEU*     3.8    17.9    -      -       +      -
    990D  ASP*     3.9    28.3    -      -       +      -
    991D  ILE      4.4     8.1    -      -       -      -
    993D  GLU*     3.1    54.5    +      -       +      +
   1261D  GLY*     3.5    31.2    -      -       -      -
   1262D  THR*     3.5    31.1    -      -       +      +
   1267D  TYR*     4.0    13.5    -      -       +      +
     49E  SER*     3.3     2.4    -      -       -      +
     50E  LYS*     1.3    79.7    -      -       +      +
     52E  ALA*     1.3    62.1    +      -       -      +
     54E  VAL*     3.5     7.7    +      -       -      +
     55E  ILE*     3.7     8.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 52 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1267D  TYR*     3.8    21.0    -      -       +      -
   1270D  ILE*     5.6     0.2    -      -       -      -
     47E  VAL*     3.7    13.9    -      -       +      -
     48E  SER*     3.5    19.1    -      -       -      +
     49E  SER*     3.2    19.7    +      -       -      +
     51E  TYR*     1.3    75.4    -      -       -      +
     53E  LEU*     1.3    63.0    +      -       -      +
     54E  VAL      3.3     0.2    +      -       -      -
     55E  ILE*     3.3     3.8    +      -       -      +
     56E  TYR*     3.1    39.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 53 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    557D  ILE*     3.7    32.3    -      -       +      -
     40E  ILE*     4.8     2.0    -      -       +      -
     43E  LEU*     3.9    37.2    -      -       +      +
     44E  LEU*     4.1    13.5    -      -       +      -
     47E  VAL*     3.5    17.6    -      -       +      +
     49E  SER      3.2    12.5    +      -       -      +
     50E  LYS      3.4     8.2    +      -       -      +
     52E  ALA*     1.3    76.5    -      -       -      +
     54E  VAL*     1.3    62.3    +      -       -      +
     56E  TYR*     4.4     4.0    -      -       +      -
     57E  ALA*     3.0    22.5    +      -       -      +
     96E  LEU*     4.5     7.4    -      -       +      -
     99E  ILE*     4.1    34.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 54 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1083C  TYR*     5.7     0.2    -      -       +      -
    550D  GLU*     4.0     5.6    -      -       +      +
    553D  ALA*     3.6    32.2    -      -       +      +
    554D  GLU*     3.5    26.0    -      -       +      -
    557D  ILE*     3.8    13.0    -      -       +      -
    558D  LEU*     3.8    24.7    -      -       +      -
   1262D  THR*     4.1     8.5    -      -       +      -
     50E  LYS      3.4    15.2    +      -       -      +
     51E  TYR      3.7     8.3    -      -       -      +
     52E  ALA      3.2     0.8    -      -       -      -
     53E  LEU*     1.3    78.7    -      -       -      +
     55E  ILE*     1.3    63.6    +      -       +      +
     58E  ALA*     2.9    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 55 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1083C  TYR*     3.5    39.3    -      -       +      +
    550D  GLU*     4.9     7.0    -      -       +      -
   1262D  THR*     4.2    11.9    -      -       -      +
   1267D  TYR*     3.3    35.4    -      -       +      +
   1268D  ARG*     4.2     0.4    -      -       -      +
   1270D  ILE*     4.2    12.8    -      -       +      -
   1272D  VAL*     5.2     0.4    -      -       -      +
     51E  TYR      3.7    12.7    +      -       -      +
     52E  ALA      3.3     7.0    +      -       -      +
     53E  LEU      3.3     0.2    -      -       -      -
     54E  VAL*     1.3    76.9    -      -       +      +
     56E  TYR*     1.3    67.3    +      -       +      +
     58E  ALA*     4.5     2.2    -      -       -      +
     59E  LYS*     3.0    52.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 56 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1270D  ILE*     3.5    46.6    -      -       +      +
   1272D  VAL*     4.2    20.0    -      -       +      +
     46E  ARG      5.0     6.5    -      -       -      -
     47E  VAL*     3.6    30.7    -      -       +      -
     48E  SER*     5.2     3.0    +      -       -      -
     52E  ALA*     3.1    20.2    +      -       +      +
     53E  LEU*     3.8     7.4    -      -       +      +
     54E  VAL      3.3     0.2    -      -       -      -
     55E  ILE*     1.3    78.3    -      -       -      +
     57E  ALA*     1.3    62.7    +      -       -      +
     60E  ARG*     3.3    22.9    +      -       -      +
     99E  ILE*     4.1    19.1    -      -       +      +
    104E  LEU*     5.5     0.3    -      -       -      +
    105E  GLU      5.3     2.2    -      -       -      +
    106E  HIS*     3.6    39.6    +      +       +      +
    107E  THR      4.7     0.5    +      -       -      -
    108E  GLU*     4.5     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 57 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    553D  ALA*     4.8     4.0    -      -       +      -
    557D  ILE*     4.8     2.2    -      -       +      -
     53E  LEU      3.0    17.7    +      -       -      +
     54E  VAL      4.0     2.9    -      -       -      +
     56E  TYR*     1.3    75.4    -      -       -      +
     58E  ALA*     1.3    60.2    +      -       -      +
     60E  ARG*     3.6     1.4    +      -       -      -
     61E  ALA*     2.9    30.3    +      -       -      +
     92E  LEU*     4.0    15.6    -      -       +      +
     95E  ALA*     3.9     8.2    -      -       +      +
     96E  LEU*     3.6    29.2    -      -       +      -
     99E  ILE*     3.9    10.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 58 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    549D  ALA*     3.7    11.8    -      -       -      +
    550D  GLU*     3.6    44.2    -      -       +      +
    553D  ALA*     4.2     2.2    -      -       +      +
     54E  VAL      2.9    20.0    +      -       -      +
     55E  ILE*     4.1     3.4    -      -       -      +
     57E  ALA*     1.3    78.5    -      -       -      +
     59E  LYS*     1.3    58.7    +      -       +      +
     61E  ALA*     3.1     7.5    +      -       -      +
     62E  ARG*     3.0    31.7    +      -       -      +
     92E  LEU*     5.1     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 59 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1083C  TYR*     5.2     6.5    -      -       -      -
    550D  GLU*     5.4     9.2    -      -       +      +
   1268D  ARG*     2.9    28.0    +      -       -      +
   1269D  ASN*     4.4     3.6    -      -       -      +
   1270D  ILE*     3.1    29.5    +      -       +      +
   1272D  VAL*     3.8    17.3    -      -       +      -
     55E  ILE*     3.0    31.9    +      -       +      +
     58E  ALA*     1.3    78.4    -      -       +      +
     60E  ARG*     1.3    61.8    +      -       -      +
     62E  ARG*     3.3    13.5    +      -       -      +
     63E  GLN*     3.3    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 60 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1272D  VAL*     4.0    10.8    -      -       +      +
   1274D  PRO*     3.8    15.5    -      -       -      +
     56E  TYR      3.3    18.2    +      -       -      +
     57E  ALA*     4.0     3.1    -      -       -      +
     58E  ALA      3.3     0.4    -      -       -      -
     59E  LYS*     1.3    75.2    -      -       -      +
     61E  ALA*     1.3    65.2    +      -       -      +
     63E  GLN*     3.0    40.7    +      -       -      +
     64E  ILE*     3.0    21.9    +      -       +      +
     79E  VAL*     3.3    16.1    +      -       -      +
     80E  GLY      2.7    30.7    +      -       -      -
     81E  PRO*     3.9     2.8    -      -       -      +
     82E  LEU*     3.7     8.3    -      -       -      +
     95E  ALA*     3.6    11.0    -      -       +      -
     98E  GLU*     2.6    41.6    +      -       -      +
     99E  ILE*     5.5     0.2    -      -       +      -
    104E  LEU*     3.7    28.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 61 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1111C  ASN*     4.6     1.7    +      -       -      -
    549D  ALA*     4.3    11.2    -      -       +      -
     57E  ALA      2.9    19.8    +      -       -      +
     58E  ALA*     3.1     8.7    +      -       -      +
     60E  ARG*     1.3    77.1    -      -       -      +
     62E  ARG*     1.3    57.3    +      -       -      +
     64E  ILE*     3.6     1.3    +      -       -      +
     65E  ASN*     3.0    29.1    +      -       -      +
     91E  PRO*     3.9    29.4    -      -       +      +
     92E  LEU*     4.1    17.0    -      -       +      +
     95E  ALA*     4.2     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 62 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1111C  ASN*     3.2    45.9    -      -       -      +
   1112C  ILE*     3.0    30.3    +      -       -      +
   1113C  PRO      4.9     1.8    +      -       -      -
    548D  SER*     4.0    12.5    -      -       -      -
    549D  ALA*     4.2     8.7    -      -       +      +
    550D  GLU*     2.7    44.2    +      -       -      -
     58E  ALA      3.0    17.2    +      -       -      +
     59E  LYS*     3.5    14.1    -      -       -      +
     60E  ARG      3.2     0.2    -      -       -      -
     61E  ALA*     1.3    75.2    -      -       -      +
     63E  GLN*     1.3    64.3    +      -       +      +
     66E  ASP*     3.0    28.7    +      -       -      +
     78E  TYR*     5.5     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 63 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1272D  VAL*     2.8    38.2    +      -       -      +
   1273D  GLN*     5.0     4.9    -      -       -      +
   1274D  PRO*     4.4    10.0    -      -       -      +
     59E  LYS      3.3    12.7    +      -       -      +
     60E  ARG*     3.0    37.6    +      -       -      +
     62E  ARG*     1.3    78.5    -      -       +      +
     64E  ILE*     1.3    62.1    +      -       -      +
     66E  ASP      3.2     1.7    +      -       -      -
     67E  TYR*     3.0    19.4    +      -       -      +
     78E  TYR*     3.3    48.4    -      -       +      +
     79E  VAL*     4.5     8.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 64 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60E  ARG*     3.0    29.9    +      -       -      +
     61E  ALA      4.1     3.6    -      -       -      +
     63E  GLN*     1.3    75.1    -      -       -      +
     65E  ASN*     1.3    61.3    +      -       -      +
     67E  TYR*     3.2     8.2    +      -       -      +
     68E  TYR*     3.2    45.3    +      -       +      +
     79E  VAL      4.6     2.9    -      -       -      +
     81E  PRO*     4.5    13.0    -      -       +      -
     91E  PRO*     4.0    13.7    -      -       +      +
     94E  ILE*     3.8    20.0    -      -       +      -
     95E  ALA*     3.8    26.7    -      -       +      +
     98E  GLU*     3.3    24.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 65 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1109C  GLY      3.3    11.4    +      -       -      +
   1110C  GLU      4.5     4.2    +      -       -      -
   1111C  ASN*     3.2    32.1    -      -       -      +
     61E  ALA      3.0    19.9    +      -       -      +
     63E  GLN      3.2     0.4    -      -       -      -
     64E  ILE*     1.3    78.5    -      -       -      +
     66E  ASP*     1.3    61.5    +      -       -      +
     68E  TYR*     3.4     8.1    +      -       -      +
     69E  ASN*     3.1    36.0    +      -       -      -
     91E  PRO*     4.3    22.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 66 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1110C  GLU*     5.7     1.2    -      -       -      +
   1111C  ASN*     3.6    17.5    +      -       -      +
     62E  ARG*     3.0    22.3    +      -       -      +
     63E  GLN      3.2     0.6    +      -       -      +
     65E  ASN*     1.3    75.4    -      -       -      +
     67E  TYR*     1.3    60.5    +      -       -      +
     69E  ASN*     3.8     8.6    +      -       -      +
     70E  GLN*     2.9    47.5    +      -       -      +
     78E  TYR*     3.4    42.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 67 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1281D  ALA      5.9     3.1    -      -       -      -
     63E  GLN      3.0    11.1    +      -       -      +
     64E  ILE*     3.2     8.7    +      -       -      +
     66E  ASP*     1.3    77.4    -      -       -      +
     68E  TYR*     1.3    83.1    +      +       -      +
     70E  GLN      3.5     0.2    -      -       -      -
     71E  LEU*     2.9    68.3    +      -       +      +
     77E  GLU*     4.7    10.5    -      -       +      -
     78E  TYR*     3.3    30.9    -      -       -      +
     79E  VAL      4.3     0.4    -      -       -      +
     80E  GLY*     3.6    18.4    -      -       -      -
     81E  PRO*     3.7    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 68 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64E  ILE*     3.2    17.9    +      -       +      -
     65E  ASN*     3.9    10.3    -      -       -      +
     66E  ASP      3.4     0.4    -      -       -      -
     67E  TYR*     1.3   106.0    -      +       -      +
     69E  ASN*     1.3    61.4    +      -       -      +
     70E  GLN      3.5     0.2    -      -       -      -
     71E  LEU*     4.2    15.0    +      -       +      +
     72E  GLY      5.5     0.3    +      -       -      -
     81E  PRO*     3.6    23.3    -      -       +      +
     85E  PRO*     4.0    11.3    -      -       -      +
     89E  GLU      5.0     6.5    -      -       -      -
     91E  PRO*     4.9    11.4    -      -       +      -
     94E  ILE*     3.7    25.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 69 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1108C  LYS      3.9     8.6    -      -       -      +
   1109C  GLY*     2.5    38.9    +      -       -      +
   1110C  GLU*     3.7    12.9    -      -       +      +
   1111C  ASN      4.9     0.6    -      -       -      +
    458D  LYS*     5.7     1.0    +      -       -      -
     65E  ASN*     3.1    27.9    +      -       -      +
     66E  ASP*     3.4     9.2    +      -       -      +
     67E  TYR      3.2     0.4    -      -       -      -
     68E  TYR*     1.3    81.0    -      -       -      +
     70E  GLN*     1.3    64.6    +      -       +      +
     71E  LEU      3.6     0.9    -      -       -      -
     72E  GLY      5.3     1.4    +      -       -      -
     73E  GLU*     4.2    15.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 70 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66E  ASP*     2.9    30.7    +      -       -      +
     67E  TYR      3.5     2.5    -      -       -      -
     69E  ASN*     1.3    82.4    -      -       +      +
     71E  LEU*     1.3    62.3    +      -       -      +
     72E  GLY      3.4     1.6    -      -       -      +
     73E  GLU*     2.8    32.0    -      -       +      +
     74E  GLY*     3.8     5.4    -      -       -      +
     75E  ILE      5.0     3.4    -      -       -      +
     76E  LEU      4.6     1.7    -      -       -      +
     77E  GLU*     3.7    37.8    -      -       +      +
     78E  TYR*     4.2    13.6    -      -       -      -
----------------------------------------------------------
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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