Contacts of the helix formed by residues 134 - 157 (chain J) in PDB entry 1KN0


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 134 (chain J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103J  PHE*     3.7     1.1    -      -       -      -
    132J  LEU*     3.3     4.1    -      -       -      +
    133J  LYS*     1.3    79.4    -      -       -      +
    135J  LYS*     1.3    62.8    +      -       -      +
    136J  ALA      3.7     1.0    +      -       -      -
    137J  LEU*     3.5    32.5    +      -       -      +
    138J  SER*     3.0    26.3    +      -       -      -
    130K  GLU*     3.1    33.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 135 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96J  VAL*     4.1    16.6    -      -       +      +
    103J  PHE*     3.5    49.6    -      -       +      -
    134J  SER*     1.3    70.2    +      -       -      +
    136J  ALA*     1.3    68.7    +      -       -      +
    138J  SER*     2.9     4.9    +      -       -      -
    139J  LEU*     2.9    29.1    +      -       +      +
     95K  PHE*     3.4    38.6    -      -       +      +
     97K  ASP*     2.8    35.2    +      -       -      -
    130K  GLU*     5.2     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 136 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134J  SER*     3.4     7.8    +      -       -      +
    135J  LYS*     1.3    79.4    -      -       -      +
    137J  LEU*     1.3    59.2    +      -       +      +
    139J  LEU*     3.1     1.2    +      -       -      -
    140J  GLU*     2.9    29.2    +      -       -      +
     95K  PHE*     3.4    26.2    -      -       +      -
    105K  VAL      4.5     1.1    -      -       -      +
    126K  TYR*     3.7    12.3    -      -       +      -
    128K  VAL*     3.3    38.1    -      -       +      -
    130K  GLU*     4.4     5.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 137 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132J  LEU*     3.8    27.0    -      -       +      +
    134J  SER*     3.5    27.0    +      -       -      +
    135J  LYS      3.3     0.4    -      -       -      -
    136J  ALA*     1.3    83.5    -      -       +      +
    138J  SER*     1.3    61.6    +      -       -      +
    140J  GLU*     3.9    19.4    -      -       -      +
    141J  LYS*     3.1    24.6    +      -       -      +
     58K  GLY*     5.9     6.1    -      -       -      +
    128K  VAL*     4.7     9.2    -      -       +      -
    130K  GLU*     3.8    13.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 138 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103J  PHE*     3.6    17.7    +      -       -      +
    105J  VAL*     4.0    19.0    -      -       -      +
    129J  SER*     3.1    33.8    +      -       -      -
    132J  LEU*     3.2    15.6    +      -       -      +
    134J  SER      3.0    17.2    +      -       -      -
    135J  LYS      2.9     9.7    +      -       -      -
    137J  LEU*     1.3    74.7    -      -       -      +
    139J  LEU*     1.3    63.9    +      -       -      +
    141J  LYS      3.5     0.7    +      -       -      -
    142J  ALA*     3.1    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 139 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93J  VAL*     4.3    15.7    -      -       +      -
     96J  VAL*     3.8    29.6    -      -       +      -
    105J  VAL*     3.8    16.4    -      -       +      -
    107J  VAL*     5.0     0.2    -      -       +      -
    135J  LYS*     2.9    16.3    +      -       +      +
    136J  ALA      3.7     2.7    -      -       -      +
    138J  SER*     1.3    73.6    -      -       -      +
    140J  GLU*     1.3    68.5    +      -       -      +
    142J  ALA*     3.1     3.5    +      -       -      -
    143J  ARG*     2.8    33.9    +      -       +      +
     94K  ASP*     3.3    35.0    -      -       +      +
     95K  PHE*     3.7    19.7    -      -       +      -
    126K  TYR*     3.3    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 140 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136J  ALA      2.9    16.9    +      -       -      +
    137J  LEU*     3.9    21.1    -      -       -      +
    139J  LEU*     1.3    75.6    -      -       -      +
    141J  LYS*     1.3    63.8    +      -       -      +
    143J  ARG*     4.8     0.2    -      -       -      -
    144J  LYS*     3.0    67.4    +      -       +      +
    126K  TYR*     3.6    39.6    -      -       +      +
    128K  VAL*     4.9     7.3    -      -       -      +
    149K  ASP*     5.2     0.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 141 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128J  VAL*     2.8    30.6    +      -       -      +
    129J  SER*     3.9    14.0    -      -       -      +
    132J  LEU*     5.1     6.5    -      -       +      -
    137J  LEU      3.1    17.4    +      -       -      +
    138J  SER*     3.7     4.3    -      -       -      +
    139J  LEU      3.1     0.2    -      -       -      -
    140J  GLU*     1.3    81.1    -      -       -      +
    142J  ALA*     1.3    57.3    +      -       -      +
    144J  LYS*     4.1     2.3    -      -       -      +
    145J  GLU*     3.0    63.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 142 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105J  VAL*     3.8    13.0    -      -       +      +
    107J  VAL*     3.7    23.6    -      -       +      -
    127J  GLY*     3.3    25.4    -      -       -      +
    128J  VAL*     4.1     8.7    -      -       -      +
    138J  SER      3.1    13.2    +      -       -      +
    139J  LEU      3.1     2.6    +      -       -      +
    141J  LYS*     1.3    77.4    -      -       -      +
    143J  ARG*     1.3    61.2    +      -       -      +
    146J  ALA*     2.9    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 143 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91J  GLN*     2.8    61.8    +      -       -      +
     93J  VAL*     3.5    26.9    -      -       -      +
    107J  VAL*     4.1    12.3    -      -       +      +
    139J  LEU*     2.8    29.5    +      -       +      +
    140J  GLU*     4.2     2.5    -      -       -      +
    142J  ALA*     1.3    73.5    -      -       -      +
    144J  LYS*     1.3    65.5    +      -       +      +
    146J  ALA      3.3     0.2    +      -       -      -
    147J  VAL*     3.3    13.2    +      -       -      +
     92K  ASN*     4.4     5.9    -      -       -      +
     94K  ASP*     2.4    37.2    +      -       -      -
    108K  CYS*     3.3    26.3    -      -       -      -
    110K  PHE*     4.3     4.6    -      -       -      -
    124K  VAL*     4.4     9.4    -      -       +      -
    126K  TYR*     3.7    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 144 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140J  GLU*     3.0    51.4    +      -       +      +
    141J  LYS*     4.1     2.7    -      -       -      +
    143J  ARG*     1.3    76.6    -      -       +      +
    145J  GLU*     1.3    62.6    +      -       +      +
    147J  VAL*     3.2     5.4    +      -       -      +
    148J  THR*     3.2    23.9    +      -       -      -
    124K  VAL*     4.5    11.0    -      -       +      +
    125K  GLY      4.6     0.7    -      -       -      -
    126K  TYR*     4.0    10.3    -      -       +      +
    149K  ASP*     2.6    36.5    +      -       -      -
    153K  ARG*     3.6    43.5    +      -       -      +
    156K  ARG*     6.0     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 145 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126J  TYR      4.7     1.7    -      -       -      +
    127J  GLY*     4.0     8.0    -      -       -      -
    128J  VAL*     3.8    10.6    +      -       -      +
    141J  LYS*     3.0    63.1    +      -       -      +
    142J  ALA      4.0     2.2    -      -       -      +
    144J  LYS*     1.3    76.8    -      -       -      +
    146J  ALA*     1.3    53.0    +      -       -      +
    148J  THR*     3.3     5.8    +      -       -      +
    149J  ASP*     2.7    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 146 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91J  GLN*     4.1     0.2    -      -       -      +
    107J  VAL*     3.5    22.2    -      -       +      +
    109J  ALA*     3.7    19.1    -      -       +      +
    125J  GLY*     3.4     9.7    -      -       -      -
    126J  TYR      3.6     4.7    -      -       -      +
    127J  GLY*     3.4    21.2    -      -       -      +
    142J  ALA      2.9    19.2    +      -       -      +
    143J  ARG      3.6     5.2    -      -       -      +
    145J  GLU*     1.3    75.6    -      -       -      +
    147J  VAL*     1.3    58.2    +      -       -      +
    150J  GLY      2.9    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 147 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86J  HIS*     5.2     7.2    -      -       +      -
     88J  ILE*     3.8    26.9    -      -       +      -
     91J  GLN*     3.7     9.4    -      -       -      +
    109J  ALA*     3.9    11.7    -      -       +      -
    111J  VAL*     3.7     8.3    -      -       +      +
    143J  ARG      3.3     5.1    +      -       -      +
    144J  LYS      3.2     7.1    +      -       -      +
    145J  GLU      3.2     0.4    -      -       -      -
    146J  ALA*     1.3    74.0    -      -       -      +
    148J  THR*     1.3    70.6    +      -       -      +
    150J  GLY*     2.9     3.6    +      -       -      -
    151J  LEU*     2.8    22.0    +      -       +      +
    122K  GLU      4.9     2.0    -      -       -      +
    123K  ASP*     4.0    22.4    -      -       -      +
    124K  VAL*     2.9    34.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 148 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68J  GLY*     4.2    26.0    -      -       -      +
    144J  LYS      3.2    11.7    +      -       -      -
    145J  GLU*     3.8     8.7    -      -       -      -
    147J  VAL*     1.3    79.0    -      -       -      +
    149J  ASP*     1.3    65.2    +      -       -      +
    151J  LEU*     3.1    11.4    +      -       +      +
    152J  LYS*     2.9    34.4    +      -       +      +
    123K  ASP*     5.4     1.0    +      -       -      -
    153K  ARG*     3.7    13.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 149 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140I  GLU*     5.1     0.4    -      -       -      -
    144I  LYS*     2.6    34.4    +      -       -      -
    125J  GLY*     3.2     3.1    -      -       -      -
    126J  TYR      2.8    29.2    +      -       -      +
    145J  GLU      2.7    22.1    +      -       -      +
    146J  ALA      3.6     4.0    -      -       -      +
    148J  THR*     1.3    74.0    -      -       -      +
    150J  GLY*     1.3    64.2    +      -       -      +
    152J  LYS*     3.2    18.3    +      -       -      +
    153J  ARG*     3.0    28.7    +      -       -      +
    156J  ARG*     5.2     4.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 150 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109J  ALA      4.6     0.2    -      -       -      -
    111J  VAL*     3.8    16.4    -      -       -      +
    123J  ASP*     4.3     2.4    -      -       -      +
    124J  VAL      4.0     5.4    -      -       -      -
    125J  GLY*     3.2    22.6    -      -       -      -
    146J  ALA      2.9    13.3    +      -       -      -
    147J  VAL      2.9     4.1    +      -       -      -
    149J  ASP*     1.3    76.3    -      -       -      +
    151J  LEU*     1.3    62.5    +      -       -      -
    153J  ARG*     3.2     3.8    +      -       -      +
    154J  ALA*     2.9    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 151 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71J  VAL*     5.6     0.7    -      -       +      -
     72J  ILE*     4.6    18.8    -      -       +      -
     84J  TRP*     4.0    13.9    -      -       +      -
     86J  HIS*     3.7    40.2    -      -       +      +
    111J  VAL*     3.7    13.4    -      -       +      +
    113J  VAL*     3.6    23.6    -      -       +      -
    147J  VAL*     2.8    16.9    +      -       +      +
    148J  THR*     3.6    13.7    -      -       +      +
    150J  GLY*     1.3    70.3    -      -       -      +
    152J  LYS*     1.3    65.4    +      -       +      +
    154J  ALA*     3.2     1.0    +      -       -      +
    155J  LEU*     3.0    37.9    +      -       +      +
    123K  ASP*     6.0     0.7    -      -       -      +
    157K  SER*     5.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 152 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55J  ARG*     6.2     0.2    -      -       -      +
     65J  TYR*     4.2    16.0    -      -       -      +
     66J  ILE*     2.9    33.6    +      -       +      +
     68J  GLY*     4.3    12.2    -      -       -      +
     71J  VAL*     3.8    33.0    -      -       +      -
    148J  THR*     2.9    29.8    +      -       +      +
    149J  ASP*     3.6    21.4    +      -       -      +
    151J  LEU*     1.3    76.3    -      -       +      +
    153J  ARG*     1.3    65.0    +      -       +      +
    154J  ALA      3.2     0.2    +      -       -      -
    155J  LEU*     3.2     3.6    +      -       -      +
    156J  ARG*     3.0    35.9    +      -       +      +
    162J  LEU      4.6     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 153 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144I  LYS*     3.5    68.2    +      -       -      +
    147I  VAL*     5.0     0.4    -      -       -      +
    148I  THR*     3.8    13.1    +      -       -      -
    123J  ASP*     3.1    37.8    +      -       +      +
    124J  VAL      2.9    26.7    +      -       -      +
    149J  ASP*     3.0    21.6    +      -       -      +
    150J  GLY      3.2     3.8    +      -       -      +
    152J  LYS*     1.3    77.3    -      -       +      +
    154J  ALA*     1.3    62.0    +      -       -      +
    156J  ARG*     3.5    54.6    -      -       -      +
    157J  SER*     3.9     4.9    +      -       -      -
    167J  LEU*     5.8     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 154 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111J  VAL      4.0    13.0    -      -       -      +
    113J  VAL*     3.5    26.5    -      -       +      -
    121J  HIS*     3.8    21.8    +      -       -      +
    122J  GLU      5.0     0.9    -      -       -      -
    123J  ASP*     3.9    10.3    -      -       -      +
    150J  GLY      2.9    16.7    +      -       -      +
    151J  LEU*     3.5     3.1    -      -       -      +
    152J  LYS      3.1     0.2    -      -       -      -
    153J  ARG*     1.3    76.0    -      -       -      +
    155J  LEU*     1.3    65.7    +      -       -      +
    157J  SER*     3.1    23.4    +      -       -      -
    158J  PHE*     4.4     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 155 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71J  VAL*     3.3    39.9    -      -       +      +
     72J  ILE*     5.6     0.4    -      -       +      -
     75J  ALA*     4.4     7.4    -      -       +      -
     79J  PHE*     4.7     3.1    -      -       +      -
     84J  TRP*     4.2    17.7    -      -       +      -
    113J  VAL*     3.7    24.9    -      -       +      -
    151J  LEU*     3.0    39.5    +      -       +      +
    152J  LYS      3.8     3.6    -      -       -      +
    154J  ALA*     1.3    75.1    -      -       -      +
    156J  ARG*     1.3    64.8    +      -       -      +
    158J  PHE*     2.9    37.1    +      -       +      +
    162J  LEU*     3.5    24.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 156 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72I  ILE*     4.7     3.1    -      -       +      -
    144I  LYS*     5.9     1.2    -      -       -      +
     65J  TYR*     6.4     0.2    -      -       -      +
    149J  ASP*     5.2     4.8    +      -       -      -
    152J  LYS*     3.0    27.5    +      -       +      +
    153J  ARG*     3.5    52.6    -      -       -      +
    154J  ALA      3.2     0.6    -      -       -      -
    155J  LEU*     1.3    75.8    -      -       -      +
    157J  SER*     1.3    64.2    +      -       -      +
    158J  PHE      2.9     1.8    +      -       -      -
    159J  GLY      3.1    10.9    +      -       -      -
    162J  LEU      3.8    11.3    +      -       -      +
    163J  GLY*     3.6    23.8    -      -       -      +
    164J  ASN*     3.4    27.6    -      -       -      +
    166J  ILE*     3.9    19.7    -      -       -      +
    167J  LEU*     3.4    34.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 157 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72I  ILE*     3.4    23.1    -      -       -      +
     76I  ASN*     3.3    20.3    +      -       -      +
     84I  TRP*     3.7    11.6    -      -       -      -
     86I  HIS*     3.4    17.8    +      -       -      -
    151I  LEU*     4.9     1.9    -      -       -      +
    121J  HIS*     3.4    29.4    -      -       -      +
    123J  ASP*     4.7     3.6    +      -       -      -
    153J  ARG      3.9     6.3    +      -       -      -
    154J  ALA*     3.1    14.0    +      -       -      -
    155J  LEU      3.0     1.4    +      -       -      -
    156J  ARG*     1.3    79.9    -      -       -      +
    158J  PHE*     1.3    58.4    +      -       -      +
    159J  GLY      3.4     0.2    -      -       -      -
----------------------------------------------------------
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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