Contacts of the helix formed by residues 47 - 70 (chain C) in PDB entry 2GD4


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 ARG 47 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45C  ASN*     2.5    19.9    +      -       -      +
     46C  ARG*     1.3    85.4    -      -       +      +
     48C  VAL*     1.3    52.0    +      -       -      +
     50C  GLU*     2.6    31.9    +      -       -      +
     51C  LEU*     2.7    20.4    +      -       -      +
    112C  SER*     3.1    13.1    +      -       -      -
    114C  LYS*     3.1    37.1    -      -       -      +
    115C  THR*     3.0    44.4    +      -       +      +
    122C  PHE*     3.1    40.1    -      -       +      -
      1G  ZDO      3.5    27.5    +      -       -      -
      2G  IDS      3.6    14.8    +      -       -      -
      3G  SUS      4.5     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 48 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  THR*     4.7     0.4    -      -       +      -
     45C  ASN*     2.9    25.8    +      -       +      +
     47C  ARG*     1.3    70.6    -      -       -      +
     49C  TRP*     1.3    52.6    +      -       -      +
     50C  GLU      2.7    11.3    +      -       -      -
     51C  LEU*     3.0     6.3    +      -       -      +
     52C  SER*     2.7    28.2    +      -       -      -
    122C  PHE*     4.6    11.2    -      -       +      -
    125C  LYS*     4.2    14.6    -      -       +      +
    126C  LEU*     3.3    41.0    -      -       +      +
    129C  ARG*     4.8     1.3    -      -       -      -
    417C  LEU*     3.8    11.7    -      -       +      -
      5G  SGN      3.2    32.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 49 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  GLN*     3.3    44.2    -      -       +      -
     39C  LYS      4.4    12.4    +      -       -      -
     40C  ILE*     4.6    14.6    -      -       +      -
     41C  PRO*     3.4    37.3    -      -       +      +
     44C  THR*     4.0     4.7    -      -       +      -
     45C  ASN      3.1     7.2    +      -       -      +
     46C  ARG*     3.7    20.4    -      -       +      +
     48C  VAL*     1.3    78.3    -      -       -      +
     50C  GLU*     1.3    68.5    +      -       +      +
     52C  SER*     3.7     2.5    -      -       -      -
     53C  LYS*     3.3    52.8    +      -       +      +
    417C  LEU*     3.3    37.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  ARG*     3.2    25.4    +      -       -      +
     47C  ARG*     2.6    22.7    +      -       -      +
     49C  TRP*     1.3    80.2    -      -       +      +
     51C  LEU*     1.3    52.7    +      -       -      +
     52C  SER      2.7    13.6    +      -       -      -
     53C  LYS*     3.0    15.5    +      -       -      +
     54C  ALA*     3.1    11.4    +      -       -      +
     57C  ARG*     4.1     4.7    +      -       -      +
    110C  THR      4.3     1.3    -      -       -      +
    111C  ILE*     2.9    28.2    -      -       +      -
    112C  SER*     2.8    31.7    +      -       -      -
    115C  THR*     3.3    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  ARG      2.7    15.6    +      -       -      +
     48C  VAL*     3.8     6.5    -      -       -      +
     50C  GLU*     1.3    73.6    -      -       -      +
     52C  SER*     1.3    60.4    +      -       -      +
     54C  ALA*     3.5    16.3    -      -       -      +
     55C  ASN*     3.6     4.5    +      -       -      +
    108C  PHE*     4.7     4.0    -      -       +      -
    111C  ILE*     4.1    20.1    -      -       +      +
    115C  THR*     5.2     5.6    -      -       +      -
    119C  ILE*     3.5    36.3    -      -       +      +
    122C  PHE*     3.5    15.3    -      -       +      -
    123C  PHE*     3.0    71.6    -      -       +      +
    126C  LEU*     5.1     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48C  VAL      2.7    17.6    +      -       -      -
     49C  TRP*     3.7    10.8    -      -       -      -
     50C  GLU      2.7     0.8    +      -       -      -
     51C  LEU*     1.3    75.6    -      -       -      +
     53C  LYS*     1.3    59.8    +      -       -      +
     54C  ALA      2.9     4.0    -      -       -      -
     55C  ASN*     2.9    30.1    +      -       -      +
     56C  SER*     3.2     6.2    +      -       -      -
    126C  LEU*     4.5    13.0    -      -       -      +
    417C  LEU*     3.9    13.5    +      -       -      +
    418C  ASN      4.8     0.5    +      -       -      -
    419C  THR*     3.0    37.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  GLN*     3.9    14.6    +      -       -      -
     49C  TRP*     3.3    61.9    +      -       +      +
     50C  GLU*     3.0     5.0    +      -       -      +
     52C  SER*     1.3    80.9    +      -       -      +
     54C  ALA*     1.3    61.0    +      -       -      +
     56C  SER*     3.2    14.3    -      -       -      +
     57C  ARG*     3.0    53.2    +      -       -      +
    417C  LEU      5.4     5.4    -      -       -      +
    418C  ASN*     6.2     2.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  GLU      3.1     7.7    +      -       -      +
     51C  LEU*     3.5    16.8    -      -       -      +
     53C  LYS*     1.3    74.0    -      -       -      +
     55C  ASN*     1.3    68.7    +      -       -      +
     57C  ARG*     2.8    37.1    +      -       -      +
     58C  PHE*     3.0    12.6    +      -       -      +
    106C  PHE      4.6     7.2    -      -       -      +
    107C  LYS*     4.0    19.8    -      -       -      +
    108C  PHE*     4.7     7.4    -      -       +      -
    111C  ILE*     4.7     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  LEU      3.6     7.9    +      -       -      +
     52C  SER*     2.9    12.7    +      -       -      +
     54C  ALA*     1.3    78.5    -      -       -      +
     56C  SER*     1.3    54.4    +      -       -      +
     58C  PHE*     2.9    12.1    +      -       -      +
     59C  ALA*     2.6    36.5    +      -       -      +
     80C  PRO*     3.3    20.4    -      -       -      +
     81C  LEU*     3.4    35.6    -      -       +      +
     84C  SER*     3.0    35.6    -      -       -      +
    106C  PHE      5.4     0.7    -      -       -      -
    108C  PHE*     5.6     1.0    -      -       -      -
    123C  PHE*     5.1     4.9    -      -       +      -
    419C  THR*     4.8     4.0    -      -       +      +
    420C  ILE*     3.8    10.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52C  SER*     3.2     6.8    +      -       -      -
     53C  LYS*     3.2    18.6    -      -       -      +
     55C  ASN*     1.3    81.1    -      -       -      +
     57C  ARG*     1.3    65.4    +      -       -      +
     59C  ALA*     3.1    13.6    +      -       -      +
     60C  THR*     3.5    12.1    +      -       -      +
    301C  PRO*     5.3     4.9    -      -       -      -
    304C  LEU*     5.1     3.8    -      -       -      +
    418C  ASN*     4.3    10.9    +      -       -      -
    419C  THR*     5.2     0.7    -      -       -      -
    420C  ILE*     3.5    36.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  GLU*     4.1     6.5    +      -       -      +
     53C  LYS*     3.0    46.6    +      -       -      +
     54C  ALA*     2.8    46.3    +      -       -      +
     56C  SER*     1.3    77.5    -      -       -      +
     58C  PHE*     1.3    59.9    +      -       -      +
     60C  THR*     3.3    14.9    +      -       -      -
     61C  THR*     3.6     9.5    +      -       -      -
    107C  LYS*     4.0    21.5    +      -       +      +
    110C  THR*     3.8    34.6    +      -       -      +
    111C  ILE*     5.8     0.8    -      -       -      +
    301C  PRO*     4.3    19.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  ALA      3.0     8.4    +      -       -      +
     55C  ASN*     2.9    24.5    +      -       -      +
     57C  ARG*     1.3    76.0    -      -       -      +
     59C  ALA*     1.3    67.3    +      -       -      +
     60C  THR      3.3     0.7    +      -       -      -
     61C  THR*     3.4     5.3    +      -       -      -
     62C  PHE*     3.1    58.7    +      +       +      +
     80C  PRO*     4.1    19.7    -      -       +      -
     83C  ILE*     4.1     6.1    -      -       +      -
     84C  SER*     4.0     6.5    -      -       -      +
    105C  VAL      2.9    27.4    -      -       -      -
    106C  PHE*     3.3    49.1    -      +       -      +
    107C  LYS*     4.1     7.1    -      -       -      +
    335C  LEU*     4.5     1.3    -      -       +      -
    338C  MET*     3.8    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55C  ASN*     2.6    18.9    +      -       -      +
     56C  SER*     3.1    10.7    +      -       -      +
     58C  PHE*     1.3    76.0    -      -       -      +
     60C  THR*     1.3    56.5    +      -       -      +
     62C  PHE*     3.9     2.9    -      -       -      +
     63C  TYR*     3.0    30.8    +      -       -      +
     80C  PRO*     3.7    33.9    -      -       +      -
    420C  ILE*     4.4    12.1    -      -       +      -
    423C  MET*     3.5    13.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56C  SER      3.5     6.8    +      -       -      +
     57C  ARG      3.3     6.2    +      -       -      -
     58C  PHE      3.3     0.2    -      -       -      -
     59C  ALA*     1.3    73.8    -      -       +      +
     61C  THR*     1.3    79.0    +      -       -      +
     63C  TYR*     3.2     3.3    +      -       -      +
     64C  GLN*     3.1    25.4    +      -       -      +
    299C  LEU*     4.2    28.2    -      -       +      +
    300C  THR      3.9    26.2    -      -       -      +
    301C  PRO*     3.3    29.3    -      -       +      +
    304C  LEU*     4.6    12.3    -      -       +      -
    423C  MET*     4.4     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  ARG      3.6    12.8    +      -       -      -
     58C  PHE      3.4     6.4    +      -       -      -
     60C  THR*     1.3    82.3    +      -       -      +
     62C  PHE*     1.3    66.1    +      -       -      +
     64C  GLN*     3.0    29.8    -      -       -      +
     65C  HIS*     3.0    33.7    -      -       +      +
    107C  LYS*     4.0    16.9    +      -       -      +
    338C  MET*     4.1    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  PHE*     3.1    45.3    +      +       +      +
     59C  ALA*     3.9     4.5    -      -       -      +
     61C  THR*     1.3    77.0    -      -       -      +
     63C  TYR*     1.3    71.3    +      -       -      +
     65C  HIS*     3.1     3.6    +      -       -      +
     66C  LEU*     2.9    51.7    +      -       +      -
     78C  LEU*     4.9     6.3    -      -       +      -
     80C  PRO*     6.3     1.3    -      -       +      -
     83C  ILE*     3.7    25.6    -      -       +      -
    329C  PHE*     4.9     0.2    -      +       -      -
    331C  LEU*     3.6    27.8    -      -       +      -
    334C  GLN*     4.8    11.9    -      -       +      -
    335C  LEU*     3.7    26.7    -      -       +      -
    338C  MET*     3.9    15.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  ALA      3.0    10.1    +      -       -      +
     60C  THR*     3.6     4.0    -      -       -      +
     62C  PHE*     1.3    80.5    -      -       -      +
     64C  GLN*     1.3    56.9    +      -       +      +
     66C  LEU*     3.2     6.2    +      -       +      +
     67C  ALA*     2.7    40.9    +      -       +      +
     76C  ILE*     3.9    29.7    -      -       +      +
     78C  LEU*     4.7     7.0    -      -       +      -
    296C  GLU*     2.4    48.7    +      -       +      -
    299C  LEU*     4.2    15.7    -      -       +      -
    409C  LEU*     3.4    10.9    -      -       +      +
    423C  MET*     3.3    46.7    -      -       +      -
    424C  GLY*     4.5     8.5    -      -       -      -
    425C  ARG*     3.3    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 64 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  THR      3.1    15.4    +      -       -      +
     61C  THR*     3.0    20.7    -      -       -      +
     62C  PHE      3.1     0.2    +      -       -      -
     63C  TYR*     1.3    79.9    -      -       -      +
     65C  HIS*     1.3    68.5    +      -       +      +
     67C  ALA*     2.9    22.9    +      -       -      +
     68C  ASP*     3.2    11.8    +      -       -      +
    296C  GLU*     3.3    18.7    +      -       -      +
    297C  LYS*     3.1    27.1    +      -       -      +
    299C  LEU*     3.4    26.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61C  THR*     3.0    38.2    -      -       -      +
     62C  PHE      3.1     4.3    +      -       -      +
     64C  GLN*     1.3    75.8    +      -       +      +
     66C  LEU*     1.3    60.0    +      -       -      +
     67C  ALA      2.8    10.5    +      -       -      -
     68C  ASP*     2.8    22.7    +      -       -      +
     69C  SER*     3.2     9.0    +      -       -      -
    334C  GLN*     4.3    17.3    -      -       +      +
    337C  ASP*     4.9    13.9    -      -       +      +
    338C  MET*     3.0    50.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62C  PHE*     2.9    28.7    +      -       +      +
     63C  TYR*     3.6     4.9    -      -       -      +
     65C  HIS*     1.3    75.6    -      -       -      +
     67C  ALA*     1.3    59.3    +      -       -      +
     69C  SER*     2.7    32.7    +      -       -      +
     70C  LYS*     3.7    20.3    +      -       +      +
     76C  ILE*     4.4    13.4    -      -       +      +
     78C  LEU*     3.3    34.5    -      -       +      -
    329C  PHE*     3.3    40.4    -      -       +      -
    334C  GLN*     4.1    19.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  TYR*     2.7    18.3    +      -       +      +
     64C  GLN*     2.9    18.2    -      -       -      +
     65C  HIS      2.8     1.4    +      -       -      -
     66C  LEU*     1.3    76.7    -      -       -      +
     68C  ASP*     1.3    63.7    +      -       -      +
     70C  LYS*     3.3    20.3    +      -       -      +
     72C  ASP*     5.1     3.9    -      -       -      +
     76C  ILE*     5.5     4.3    -      -       -      -
    296C  GLU*     3.9    25.6    -      -       +      +
    425C  ARG*     4.5    13.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  GLN      3.2    11.1    +      -       -      +
     65C  HIS*     2.8    11.8    +      -       -      +
     67C  ALA*     1.3    77.3    -      -       -      +
     69C  SER*     1.3    65.5    +      -       -      +
     70C  LYS      3.2     8.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  HIS      3.2     4.8    +      -       -      -
     66C  LEU*     2.7    29.2    +      -       -      +
     68C  ASP*     1.3    77.6    -      -       -      +
     70C  LYS*     1.3    66.2    +      -       -      +
    334C  GLN*     3.2    32.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     3.7    23.1    -      -       -      +
     67C  ALA      3.3    13.8    +      -       -      +
     68C  ASP*     3.1    12.9    -      -       -      +
     69C  SER*     1.3    91.5    +      -       -      +
     71C  ASN*     1.3    63.7    +      -       -      +
     72C  ASP*     3.9     2.1    +      -       -      +
     74C  ASP*     4.1    11.4    -      -       +      +
     75C  ASN      4.0     3.9    +      -       -      +
     76C  ILE*     3.3    36.2    -      -       +      +
    327C  ASP*     2.6    45.3    +      -       -      -
    329C  PHE*     4.3    15.4    -      -       -      -
    425C  ARG*     5.7     0.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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