Contacts of the helix formed by residues 28 - 59 (chain C) in PDB entry 6VSU


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 28 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  SER*     1.3    75.8    -      -       -      +
     29C  ILE*     1.3    64.3    +      -       -      +
     31C  LYS*     3.4    18.5    -      -       -      +
     32C  GLY*     3.3    18.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 29 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  SER*     2.9     3.5    -      -       -      +
     28C  SER*     1.3    84.8    -      -       -      +
     30C  GLU*     1.3    54.2    +      -       +      +
     31C  LYS      3.4     0.7    -      -       -      -
     32C  GLY*     3.1     3.1    +      -       -      +
     33C  GLN*     2.6    52.7    +      -       +      +
    128C  CYS*     4.3     9.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 30 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  SER*     2.6    37.4    +      -       -      +
     29C  ILE*     1.3    69.2    -      -       -      +
     31C  LYS*     1.3    61.6    +      -       -      +
     33C  GLN*     3.2    40.5    +      -       -      +
     34C  ASN*     3.3    17.0    +      -       -      -
    134C  ARG*     4.0    12.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 31 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  SER*     3.0    27.5    +      -       -      +
     28C  SER*     3.4    24.9    -      -       -      +
     30C  GLU*     1.3    75.9    -      -       -      +
     32C  GLY*     1.3    55.3    +      -       -      +
     34C  ASN*     3.0    33.2    +      -       -      +
     35C  ARG*     3.4    15.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 32 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28C  SER      3.3    16.2    +      -       -      -
     29C  ILE*     3.1     8.7    +      -       -      -
     31C  LYS*     1.3    72.0    -      -       -      +
     33C  GLN*     1.3    64.1    +      -       -      +
     34C  ASN      3.1     1.3    -      -       -      -
     35C  ARG*     2.9    29.7    +      -       -      +
     36C  VAL*     3.0    18.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 33 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  ILE*     2.6    29.2    +      -       +      +
     30C  GLU*     3.2    32.5    +      -       -      +
     32C  GLY*     1.3    70.8    -      -       -      +
     34C  ASN*     1.3    57.4    +      -       -      +
     36C  VAL*     3.2     4.7    +      -       -      +
     37C  ILE*     3.0    31.0    +      -       -      +
    128C  CYS*     2.8    41.5    +      -       +      +
    129C  GLY*     3.2    23.6    +      -       -      -
    130C  VAL*     3.8    13.3    -      -       +      -
    134C  ARG*     3.0    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 34 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30C  GLU*     3.3    20.0    +      -       -      -
     31C  LYS*     3.0    18.5    +      -       -      +
     33C  GLN*     1.3    74.8    -      -       -      +
     35C  ARG*     1.3    53.5    +      -       +      +
     37C  ILE*     3.7     7.8    -      -       -      +
     38C  ASP*     2.7    47.1    +      -       -      +
    134C  ARG*     2.8    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 35 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31C  LYS*     3.6    12.3    -      -       -      +
     32C  GLY*     2.9    24.1    +      -       -      +
     34C  ASN*     1.3    76.1    -      -       +      +
     36C  VAL*     1.3    63.1    +      -       -      +
     38C  ASP*     4.0     6.3    -      -       -      +
     39C  ALA*     3.2    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 36 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32C  GLY      3.0    17.6    +      -       -      +
     33C  GLN      3.2     7.8    +      -       -      +
     35C  ARG*     1.3    77.5    -      -       +      +
     37C  ILE*     1.3    50.0    +      -       +      +
     39C  ALA*     3.7     3.9    -      -       -      +
     40C  SER*     2.8    46.5    +      -       -      +
    124C  GLU*     4.9     7.6    -      -       +      -
    125C  ILE*     4.6    15.3    -      -       +      +
    128C  CYS*     4.0    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 37 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  GLN      3.0    19.7    +      -       -      +
     34C  ASN*     3.7     7.6    -      -       -      +
     36C  VAL*     1.3    72.9    -      -       +      +
     38C  ASP*     1.3    64.2    +      -       -      +
     40C  SER*     3.1     7.3    +      -       -      -
     41C  LEU*     2.8    55.9    +      -       +      +
    125C  ILE*     4.5    10.5    -      -       +      -
    130C  VAL*     3.9    25.4    -      -       +      -
    134C  ARG*     3.8    28.5    -      -       +      +
    138C  VAL*     3.7    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 38 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  ASN*     2.7    30.6    +      -       -      +
     35C  ARG*     4.0     6.9    -      -       -      +
     37C  ILE*     1.3    79.0    -      -       -      +
     39C  ALA*     1.3    51.1    +      -       -      +
     41C  LEU*     3.2     9.2    +      -       -      +
     42C  THR*     2.3    42.1    +      -       -      +
     45C  ARG*     5.4     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 39 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35C  ARG      3.2    16.4    +      -       -      +
     36C  VAL*     3.7     3.6    -      -       -      +
     38C  ASP*     1.3    73.4    -      -       -      +
     40C  SER*     1.3    68.6    +      -       -      +
     42C  THR*     3.5     9.6    +      -       -      -
     43C  LEU*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 40 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  VAL*     2.8    34.8    +      -       -      +
     37C  ILE*     3.1     8.9    +      -       -      -
     39C  ALA*     1.3    75.4    -      -       -      +
     41C  LEU*     1.3    63.3    +      -       -      +
     43C  LEU*     3.3     7.2    +      -       -      +
     44C  ILE*     3.3    24.6    +      -       -      +
    120C  VAL*     5.9     0.2    -      -       -      -
    121C  PRO*     3.3    35.4    -      -       -      +
    124C  GLU*     5.7     0.5    -      -       -      +
    125C  ILE*     3.9    18.9    -      -       -      +
    138C  VAL*     5.2     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 41 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ILE*     2.8    43.3    +      -       +      +
     38C  ASP*     3.6    10.1    -      -       -      +
     40C  SER*     1.3    68.6    -      -       -      +
     42C  THR*     1.3    66.8    +      -       -      +
     44C  ILE*     3.1     8.4    +      -       +      +
     45C  ARG*     2.9    26.4    +      -       -      +
    138C  VAL*     3.7    22.4    -      -       +      +
    141C  GLU*     3.8    23.6    -      -       +      -
    142C  SER*     3.6    27.1    -      -       -      +
    145C  LEU*     3.5    19.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 42 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  ASP*     2.3    39.4    +      -       -      +
     39C  ALA*     3.5    10.8    -      -       -      -
     41C  LEU*     1.3    69.5    -      -       -      +
     43C  LEU*     1.3    51.7    +      -       -      +
     45C  ARG*     3.0    30.9    +      -       -      +
     46C  GLU*     2.8    43.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 43 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39C  ALA      2.9    17.6    +      -       -      +
     40C  SER*     3.4     8.1    -      -       -      +
     42C  THR*     1.3    72.7    -      -       -      +
     44C  ILE*     1.3    67.1    +      -       +      +
     46C  GLU*     3.4     6.9    +      -       +      +
     47C  ARG*     3.0    63.1    +      -       +      +
    119C  ASP      6.0     0.2    -      -       -      +
    121C  PRO*     5.7     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 44 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  SER      3.3    17.0    -      -       -      +
     41C  LEU*     3.1    11.4    +      -       -      +
     43C  LEU*     1.3    76.5    -      -       +      +
     45C  ARG*     1.3    52.2    +      -       -      +
     47C  ARG*     3.7    14.1    -      -       -      +
     48C  ALA*     2.8    34.0    +      -       +      +
     68C  LEU*     4.3    13.7    -      -       +      -
    117C  VAL*     4.7    11.3    -      -       +      +
    119C  ASP      3.7    24.5    -      -       -      +
    120C  VAL*     3.8    24.7    -      -       +      -
    121C  PRO*     4.6     3.1    -      -       +      -
    142C  SER*     4.0    32.1    -      -       -      +
    145C  LEU*     4.2    11.0    -      -       +      -
    146C  VAL*     4.8     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 45 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  ASP      5.4     0.2    +      -       -      -
     41C  LEU*     2.9    16.0    +      -       -      +
     42C  THR*     3.5    40.6    +      -       -      +
     44C  ILE*     1.3    74.4    -      -       -      +
     46C  GLU*     1.3    65.3    +      -       -      +
     48C  ALA*     3.1     6.9    +      -       -      +
     49C  LYS*     2.9    31.0    +      -       +      +
    145C  LEU*     4.1    27.5    -      -       +      +
    149C  GLU*     4.1    15.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 46 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42C  THR*     2.8    27.5    +      -       +      +
     43C  LEU*     3.4     9.2    +      -       +      +
     45C  ARG*     1.3    79.4    -      -       +      +
     47C  ARG*     1.3    60.9    +      -       -      +
     49C  LYS*     3.5    23.7    +      -       -      +
     50C  LEU*     3.3    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 47 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  LEU*     3.0    60.4    +      -       +      +
     44C  ILE*     3.7     8.1    -      -       -      +
     46C  GLU*     1.3    72.6    -      -       +      +
     48C  ALA*     1.3    65.7    +      -       -      +
     49C  LYS      3.2     1.0    +      -       -      -
     50C  LEU*     3.2    22.5    +      -       +      +
     51C  LYS*     3.2    18.7    +      -       +      +
    117C  VAL*     3.0    38.0    +      -       -      +
    118C  GLY*     3.3     4.4    -      -       -      -
    119C  ASP      3.0    44.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 48 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  ILE      2.8    22.7    +      -       -      +
     45C  ARG*     3.1    10.5    +      -       -      +
     47C  ARG*     1.3    73.8    -      -       -      +
     49C  LYS*     1.3    51.1    +      -       -      +
     51C  LYS*     3.5     2.4    +      -       -      +
     52C  GLY*     2.8    31.5    +      -       -      -
    117C  VAL*     3.9    19.7    -      -       +      +
    145C  LEU*     4.1    12.6    -      -       +      +
    146C  VAL*     4.7     4.9    -      -       +      -
    149C  GLU*     3.6    25.9    -      -       +      +
    152C  LEU*     4.0     3.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 49 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45C  ARG*     2.9    16.6    +      -       +      +
     46C  GLU*     3.7    25.3    +      -       -      +
     47C  ARG      3.2     0.4    -      -       -      -
     48C  ALA*     1.3    74.7    -      -       -      +
     50C  LEU*     1.3    69.3    +      -       -      +
     52C  GLY*     3.3     1.4    +      -       -      -
     53C  GLU*     2.8    70.3    +      -       +      +
     56C  ARG*     3.8     3.0    +      -       -      +
    149C  GLU*     3.8    18.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  GLU*     3.3    23.1    -      -       -      +
     47C  ARG*     3.2    13.9    +      -       +      +
     49C  LYS*     1.3    96.6    -      -       -      +
     51C  LYS*     1.4    66.5    +      -       +      +
     53C  GLU*     3.5     9.6    +      -       +      +
     54C  LEU*     3.1    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  ARG*     3.2    12.4    +      -       +      +
     48C  ALA      3.7     7.0    -      -       -      +
     50C  LEU*     1.4    82.2    -      -       -      +
     52C  GLY*     1.3    66.3    +      -       -      +
     53C  GLU      3.1     0.5    +      -       -      -
     54C  LEU*     3.1    19.0    +      -       +      +
     55C  VAL*     3.1    29.6    +      -       -      +
    115C  THR*     3.9    32.7    -      -       +      +
    116C  ASP*     3.6    31.6    -      -       -      +
    117C  VAL*     4.3     6.1    -      -       +      -
    152C  LEU*     4.3     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48C  ALA      2.8    19.1    +      -       -      -
     49C  LYS      3.5     4.9    -      -       -      -
     51C  LYS*     1.3    72.5    -      -       -      +
     53C  GLU*     1.3    55.8    -      -       -      +
     55C  VAL*     3.5     2.9    +      -       -      +
     56C  ARG*     3.0    56.2    +      -       -      +
    149C  GLU*     4.6     2.5    -      -       -      -
    150C  GLU      4.3     3.2    -      -       -      +
    152C  LEU*     3.9    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  LYS*     2.8    57.2    +      -       +      +
     50C  LEU*     3.7    11.0    -      -       +      +
     51C  LYS      3.1     0.4    -      -       -      -
     52C  GLY*     1.3    69.9    -      -       -      +
     54C  LEU*     1.3    54.9    +      -       -      +
     56C  ARG*     3.3    21.7    +      -       -      +
     57C  LEU*     2.7    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  LEU      3.1    17.1    +      -       -      +
     51C  LYS*     3.1    21.3    +      -       +      +
     53C  GLU*     1.3    72.0    -      -       -      +
     55C  VAL*     1.3    63.7    +      -       -      +
     57C  LEU*     3.4    15.8    +      -       +      +
     58C  LEU*     3.0    46.1    +      -       +      +
    111C  PRO*     3.8    29.8    -      -       +      -
    115C  THR*     5.6     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  LYS      3.1    18.8    +      -       -      +
     52C  GLY      3.7     3.6    -      -       -      +
     54C  LEU*     1.3    73.7    -      -       -      +
     56C  ARG*     1.3    60.9    +      -       -      +
     58C  LEU*     3.0    19.2    +      -       -      +
     59C  GLY*     3.2    11.3    +      -       -      +
     61C  ALA*     4.0    10.9    -      -       +      +
     64C  SER*     3.3    22.7    -      -       -      +
    111C  PRO*     3.5    29.4    -      -       +      +
    112C  ARG*     4.4     5.6    -      -       -      +
    115C  THR*     3.9     8.5    -      -       +      -
    151C  PRO*     3.6    22.0    -      -       +      -
    152C  LEU*     3.8    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  LYS*     3.8     4.0    +      -       -      +
     52C  GLY*     3.0    47.4    +      -       -      +
     53C  GLU*     3.6    26.3    +      -       -      +
     55C  VAL*     1.3    68.3    -      -       -      +
     57C  LEU*     1.3    66.4    +      -       -      +
     58C  LEU      3.2     0.7    +      -       -      -
     59C  GLY*     3.5    11.8    +      -       -      +
    149C  GLU*     3.8    15.8    +      -       -      +
    150C  GLU*     2.5    52.8    +      -       -      +
    151C  PRO*     4.8     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  GLU      2.7    20.2    +      -       -      +
     54C  LEU*     3.4    19.5    -      -       +      +
     55C  VAL      3.3     0.2    -      -       -      -
     56C  ARG*     1.3    72.8    -      -       -      +
     58C  LEU*     1.3    72.7    +      -       +      +
     59C  GLY*     4.8     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  LEU*     3.0    33.4    -      -       +      +
     55C  VAL*     3.0     8.3    +      -       -      +
     57C  LEU*     1.3    92.2    -      -       +      +
     59C  GLY*     1.3    58.8    +      -       -      +
    110C  ASP*     3.8    11.7    -      -       -      +
    111C  PRO*     3.6    32.3    -      -       +      -
    112C  ARG*     3.5    36.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55C  VAL      3.2     8.0    +      -       -      -
     56C  ARG*     3.5    10.9    +      -       -      -
     57C  LEU      4.8     0.2    -      -       -      -
     58C  LEU*     1.3    77.8    -      -       -      +
     60C  GLY*     1.3    57.3    +      -       -      -
     61C  ALA      3.1     6.7    +      -       -      -
    112C  ARG*     3.1    30.0    +      -       -      +
----------------------------------------------------------
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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