Contacts of the helix formed by residues 36 - 62 (chain E) in PDB entry 2J3W


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 ASN 36 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34E  TYR*     3.1     4.7    +      -       -      +
     35E  GLU*     1.3    82.4    -      -       -      +
     37E  ASP*     1.3    66.5    +      -       -      +
     38E  GLU*     2.8    34.0    +      -       -      +
     39E  ASP*     2.6    58.9    +      -       -      +
     40E  VAL*     3.4    13.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 37 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31E  CYS*     4.8     2.8    -      -       -      +
     36E  ASN*     1.3    75.5    +      -       -      +
     38E  GLU*     1.3    57.4    +      -       -      +
     40E  VAL*     3.1     8.6    +      -       -      +
     41E  ASN*     2.8    35.9    +      -       -      +
    121E  ASN      4.0     4.4    -      -       -      +
    122E  HIS*     3.0    54.2    +      -       -      -
    124E  ALA*     3.9    12.0    +      -       +      -
    125E  LEU*     3.2    36.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 38 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  ASN*     2.8    27.1    +      -       -      +
     37E  ASP*     1.3    73.4    -      -       -      +
     39E  ASP*     1.3    63.2    +      -       -      +
     41E  ASN*     3.4    16.3    +      -       -      +
     42E  LYS*     3.0    37.5    +      -       +      +
    124E  ALA*     3.9    20.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 39 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34E  TYR*     3.5    33.7    -      -       +      +
     35E  GLU      5.3     0.5    +      -       -      -
     36E  ASN*     2.6    43.0    +      -       -      +
     38E  GLU*     1.3    73.6    -      -       -      +
     40E  VAL*     1.3    61.8    +      -       -      +
     42E  LYS*     3.3    20.7    +      -       -      +
     43E  GLN*     2.8    32.3    +      -       -      +
     46E  ARG*     4.7     2.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 40 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27E  VAL*     4.7     3.4    -      -       +      +
     30E  LEU*     3.8    44.2    -      -       +      +
     31E  CYS*     3.8    17.5    -      -       -      +
     34E  TYR*     4.3     9.4    -      -       +      +
     36E  ASN      3.8    11.7    -      -       -      +
     37E  ASP*     3.1    11.1    +      -       -      +
     39E  ASP*     1.3    76.3    -      -       -      +
     41E  ASN*     1.3    55.7    +      -       -      +
     43E  GLN*     3.2     6.6    +      -       -      +
     44E  LEU*     2.8    47.5    +      -       +      +
    125E  LEU*     3.6    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 41 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ASP      2.8    23.3    +      -       -      +
     38E  GLU*     3.5    19.5    +      -       -      +
     40E  VAL*     1.3    73.6    -      -       -      +
     42E  LYS*     1.3    63.4    +      -       +      +
     44E  LEU*     3.3     4.0    +      -       -      +
     45E  ASP      3.1    11.3    +      -       -      -
    124E  ALA      2.9    25.7    +      -       -      -
    125E  LEU*     3.5     9.2    -      -       -      +
    126E  ILE*     2.7    43.1    +      -       +      +
    129E  ASN*     2.8    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 42 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38E  GLU*     3.0    30.6    +      -       +      +
     39E  ASP*     3.8    17.1    +      -       -      +
     41E  ASN*     1.3    79.9    -      -       +      +
     43E  GLN*     1.3    58.4    +      -       -      +
     45E  ASP*     3.2     9.2    +      -       -      +
     46E  ARG*     2.9    50.3    +      -       -      +
    129E  ASN*     4.9     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 43 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  TYR*     3.3    20.9    -      -       +      +
     30E  LEU*     3.8    23.3    -      -       +      -
     34E  TYR*     3.5    26.4    +      -       +      +
     39E  ASP      2.8    21.7    +      -       -      +
     40E  VAL*     3.6     4.7    -      -       -      +
     42E  LYS*     1.3    75.1    -      -       -      +
     44E  LEU*     1.3    54.9    +      -       -      +
     46E  ARG*     2.6    48.1    +      -       -      +
     47E  MET*     2.9    44.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 44 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23E  TYR*     3.5    27.1    -      -       +      +
     26E  LEU*     4.4     9.6    -      -       +      -
     27E  VAL*     4.3    12.8    -      -       +      -
     30E  LEU*     3.6    21.3    -      -       +      -
     40E  VAL*     2.8    38.0    +      -       +      +
     41E  ASN*     3.6     5.2    -      -       -      +
     43E  GLN*     1.3    72.7    -      -       -      +
     45E  ASP*     1.3    58.3    +      -       -      +
     47E  MET*     3.4     3.3    +      -       -      -
     48E  GLY      2.8    24.4    +      -       -      -
    125E  LEU*     5.0     0.7    -      -       +      -
    126E  ILE      3.8    13.9    -      -       -      +
    127E  TYR*     3.6    22.7    -      -       -      +
    129E  ASN*     4.0     3.8    -      -       +      -
    130E  LEU*     3.5    25.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 45 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41E  ASN      3.1    12.6    +      -       -      +
     42E  LYS*     3.5    11.3    -      -       -      +
     44E  LEU*     1.3    77.4    -      -       -      +
     46E  ARG*     1.3    59.7    +      -       -      +
     49E  TYR*     2.9    24.4    +      -       -      +
    129E  ASN*     3.8    20.6    +      -       -      +
    132E  CYS*     3.9     9.2    -      -       -      +
    133E  GLY*     3.2    18.3    +      -       -      -
    136E  ARG*     2.6    45.4    +      -       -      -
    148E  ALA      4.9     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 46 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34E  TYR*     4.4     7.9    +      -       -      -
     39E  ASP*     4.7     2.0    +      -       -      +
     42E  LYS*     2.9    31.5    +      -       -      +
     43E  GLN*     2.6    49.0    -      -       -      +
     44E  LEU      3.3     0.2    -      -       -      -
     45E  ASP*     1.3    79.5    -      -       -      +
     47E  MET*     1.3    62.3    +      -       +      +
     49E  TYR*     3.0    20.3    +      -       +      +
     50E  ASN*     3.1    21.1    +      -       -      +
    136E  ARG*     5.0     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 47 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  GLU*     3.6    41.6    -      -       +      +
     36B  MET*     4.0     4.0    -      -       -      +
     39B  TYR*     3.6    29.6    -      -       +      -
     26E  LEU*     3.8    39.0    -      -       +      -
     30E  LEU*     4.3     5.2    -      -       -      -
     43E  GLN*     2.9    49.6    +      -       -      +
     44E  LEU*     3.8     4.5    -      -       -      +
     46E  ARG*     1.3    75.5    -      -       -      +
     48E  GLY*     1.3    63.1    +      -       -      +
     50E  ASN*     3.3     4.1    +      -       -      +
     51E  ILE*     3.0    27.1    +      -       -      +
    130E  LEU*     3.9    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 48 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44E  LEU      2.8    14.5    +      -       -      -
     45E  ASP      3.7     1.1    -      -       -      -
     46E  ARG      3.2     0.2    -      -       -      -
     47E  MET*     1.3    76.2    -      -       -      +
     49E  TYR*     1.3    51.8    +      -       -      +
     51E  ILE*     3.2     2.2    +      -       -      -
     52E  GLY      2.8    30.7    +      -       -      -
    130E  LEU*     3.4    34.0    -      -       -      +
    133E  GLY      3.3     6.7    -      -       -      -
    134E  VAL*     3.1    13.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 49 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45E  ASP      2.9    13.3    +      -       -      +
     46E  ARG*     3.0    13.0    +      -       +      +
     48E  GLY*     1.3    76.3    -      -       -      +
     50E  ASN*     1.3    73.2    +      -       -      +
     52E  GLY*     3.1     2.8    +      -       -      -
     53E  VAL*     2.9    47.3    +      -       +      +
    133E  GLY      3.3    11.4    -      -       -      -
    136E  ARG*     3.9    27.1    -      -       -      +
    137E  GLY*     3.6    27.9    -      -       -      -
    140E  GLU*     2.9    38.1    +      -       +      -
    141E  MET*     4.6     2.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 50 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  GLU*     3.1    39.3    +      -       -      +
     38B  GLN*     5.0     4.8    -      -       -      +
     46E  ARG*     3.1    17.3    +      -       -      +
     47E  MET*     3.3     4.3    +      -       -      +
     49E  TYR*     1.3    88.1    -      -       -      +
     51E  ILE*     1.3    66.2    +      -       -      +
     53E  VAL*     3.6     6.9    +      -       -      +
     54E  ARG*     3.5    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 51 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  LEU*     3.8    27.6    -      -       +      +
     32B  LEU*     3.9    35.9    -      -       +      -
     35B  GLU*     3.3    23.3    -      -       +      -
     47E  MET      3.0    14.4    +      -       -      +
     48E  GLY      3.5     5.8    -      -       -      +
     50E  ASN*     1.3    73.4    -      -       -      +
     52E  GLY*     1.3    56.5    +      -       -      +
     54E  ARG*     3.0     7.9    +      -       -      +
     55E  LEU*     2.6    41.6    +      -       +      +
    130E  LEU*     4.1    21.3    -      -       +      -
    134E  VAL*     4.2     7.2    -      -       +      -
   1068E  PLM      4.1    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 52 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48E  GLY      2.8    12.2    +      -       -      -
     49E  TYR      3.1     4.4    +      -       -      -
     51E  ILE*     1.3    77.5    -      -       -      +
     53E  VAL*     1.3    61.4    +      -       -      +
     55E  LEU*     4.2     1.8    -      -       -      -
     56E  ILE*     3.2    20.4    +      -       -      +
    134E  VAL*     3.5    32.8    -      -       -      -
    137E  GLY      4.1     0.2    -      -       -      -
    138E  ALA*     3.4    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 53 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49E  TYR*     2.9    51.0    +      -       +      +
     50E  ASN*     3.8    10.1    -      -       -      +
     51E  ILE      3.2     0.2    -      -       -      -
     52E  GLY*     1.3    75.0    -      -       -      +
     54E  ARG*     1.3    63.9    +      -       +      +
     56E  ILE*     3.3    19.4    -      -       -      +
     57E  GLU*     3.7    12.0    -      -       -      +
    137E  GLY      3.9     7.6    -      -       -      +
    141E  MET*     3.9    28.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 54 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  LEU*     3.9    22.5    -      -       +      +
     34B  SER*     3.2    28.3    +      -       -      -
     35B  GLU*     4.7     8.0    +      -       -      -
     38B  GLN*     3.0    28.5    +      -       -      +
     50E  ASN*     3.5    13.1    +      -       -      +
     51E  ILE*     3.0     7.8    +      -       -      +
     53E  VAL*     1.3    82.0    -      -       +      +
     55E  LEU*     1.3    63.8    +      -       -      +
     56E  ILE      3.4     0.2    -      -       -      -
     57E  GLU*     3.6    19.2    +      -       -      +
     58E  ASP*     3.7    10.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 55 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  LEU*     4.0    16.6    -      -       +      +
     51E  ILE*     2.6    22.9    +      -       +      +
     52E  GLY*     3.3     4.2    +      -       -      +
     54E  ARG*     1.3    70.2    -      -       -      +
     56E  ILE*     1.3    71.2    +      -       -      +
     57E  GLU      3.1     2.6    +      -       -      -
     58E  ASP*     3.2     3.5    +      -       -      +
     59E  PHE*     2.9    24.1    +      -       +      -
     86E  TYR*     3.6    46.5    +      -       +      +
    134E  VAL*     4.1     8.1    -      -       +      -
    138E  ALA*     4.6     4.5    -      -       +      -
   1068E  PLM      3.7    57.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 56 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52E  GLY      3.2    11.0    +      -       -      +
     53E  VAL      3.3    21.1    -      -       -      +
     55E  LEU*     1.3    81.8    -      -       -      +
     57E  GLU*     1.3    68.8    +      -       +      +
     59E  PHE*     3.4     4.0    +      -       +      +
     60E  LEU*     3.0    44.9    +      -       +      +
    138E  ALA*     3.8    26.0    -      -       +      +
    141E  MET*     3.7    21.3    -      -       +      -
    142E  VAL*     4.1    21.8    -      -       +      -
   1068E  PLM      3.9    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 57 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53E  VAL*     3.7    15.9    -      -       -      +
     54E  ARG*     3.8    12.8    -      -       -      +
     55E  LEU      3.1     0.4    -      -       -      -
     56E  ILE*     1.3    85.4    -      -       +      +
     58E  ASP*     1.3    63.0    +      -       -      +
     59E  PHE      3.0     5.4    +      -       -      -
     60E  LEU*     3.4     7.7    +      -       -      +
     61E  ALA*     3.3    23.6    +      -       -      +
    141E  MET*     5.9     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 58 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  SER*     3.2    31.9    +      -       -      -
     31B  LEU*     4.7     6.4    -      -       +      +
     54E  ARG      3.7     9.4    +      -       -      +
     55E  LEU*     3.2    11.0    +      -       -      +
     57E  GLU*     1.3    78.7    -      -       -      +
     59E  PHE*     1.3    56.8    +      -       -      +
     61E  ALA*     4.4     4.7    -      -       -      +
     62E  ARG*     3.3    42.3    +      -       -      +
     86E  TYR*     3.7    12.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 59 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55E  LEU*     2.9    18.5    +      -       +      +
     56E  ILE*     3.5     7.0    -      -       +      +
     57E  GLU      3.0     0.2    -      -       -      -
     58E  ASP*     1.3    76.4    -      -       -      +
     60E  LEU*     1.3    80.4    +      -       +      +
     61E  ALA      3.2     1.8    -      -       -      -
     62E  ARG      3.0    14.0    +      -       -      -
     63E  SER*     3.3    20.7    +      -       -      -
     77E  VAL*     3.4    26.0    -      -       +      -
     81E  VAL*     3.5    27.1    -      -       +      -
     82E  ALA*     3.8    16.2    -      -       +      -
     85E  MET*     3.9    14.4    -      -       +      -
     86E  TYR*     3.0    32.3    -      +       +      +
   1068E  PLM      3.5    35.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 60 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56E  ILE*     3.0    38.6    +      -       +      +
     57E  GLU*     3.4     6.9    +      -       +      +
     59E  PHE*     1.3    92.5    -      -       +      +
     61E  ALA*     1.3    63.9    +      -       -      +
     63E  SER*     3.0    26.4    +      -       -      +
     64E  ASN      4.6    14.0    -      -       -      -
     68E  CYS      6.2     0.2    -      -       -      +
    142E  VAL*     5.1     6.5    -      -       +      -
   1068E  PLM      4.4    17.5    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     57E  GLU      3.3    13.8    +      -       -      +
     58E  ASP*     4.5     5.2    -      -       -      +
     59E  PHE      3.2     0.4    -      -       -      -
     60E  LEU*     1.3    79.1    -      -       -      +
     62E  ARG*     1.3    61.6    +      -       +      +
     63E  SER      3.0     8.8    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     25B  SER*     3.0    27.5    +      -       -      -
     26B  VAL*     5.8     1.6    -      -       -      +
     27B  SER*     3.0    24.6    +      -       -      +
    127B  TYR      5.6     1.8    +      -       -      -
    128B  ILE*     6.1     2.0    -      -       -      +
    129B  SER*     4.6    13.9    +      -       -      +
     12E  LYS*     4.9    19.0    +      -       -      +
     58E  ASP*     3.3    32.9    +      -       -      +
     59E  PHE      3.0     6.2    +      -       -      +
     61E  ALA*     1.3    76.2    -      -       +      +
     63E  SER*     1.3    61.9    +      -       -      +
     85E  MET*     3.5    32.4    -      -       +      +
----------------------------------------------------------
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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