Contacts of the helix formed by residues 166 - 192 (chain D) in PDB entry 3P9K


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 ASP 166 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132D  VAL*     4.1     6.4    -      -       -      +
    162D  TYR*     2.8    48.1    +      -       +      +
    163D  HIS*     3.4     5.2    +      -       -      +
    164D  GLY      3.6     0.2    -      -       -      -
    165D  THR*     1.3    80.9    -      -       -      +
    167D  PRO*     1.3    52.9    -      -       -      +
    168D  ARG*     3.1    17.4    +      -       -      +
    169D  PHE*     3.1    24.3    +      -       +      +
    170D  ASN*     2.8    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 167 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164D  GLY      5.9     1.6    -      -       -      +
    165D  THR      3.7     7.9    -      -       -      +
    166D  ASP*     1.3    86.9    -      -       -      +
    168D  ARG*     1.3    63.0    +      -       -      +
    170D  ASN*     3.6     9.4    +      -       +      +
    171D  ARG*     3.2    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 168 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130D  ASP*     2.8    42.6    +      -       -      -
    131D  LYS*     5.4     3.0    -      -       -      +
    132D  VAL*     3.4    19.4    -      -       -      +
    166D  ASP*     3.1    13.1    +      -       -      +
    167D  PRO*     1.3    80.5    -      -       -      +
    169D  PHE*     1.3    70.4    +      -       -      +
    171D  ARG*     3.1    39.0    +      -       -      +
    172D  VAL*     3.2    23.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 169 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127D  MET*     4.2     6.5    -      -       +      -
    130D  ASP*     3.4    39.7    -      -       +      -
    132D  VAL*     3.9    19.5    -      -       +      -
    133D  LEU*     3.4    35.7    -      -       +      -
    151D  PHE*     5.9     1.1    -      +       -      -
    162D  TYR*     4.4     6.5    -      +       +      -
    163D  HIS*     3.7    34.3    -      +       -      -
    166D  ASP*     3.1    25.0    +      -       +      +
    168D  ARG*     1.3    82.3    -      -       -      +
    170D  ASN*     1.3    57.5    +      -       -      +
    171D  ARG      3.0     2.2    -      -       -      -
    172D  VAL*     3.0    16.4    +      -       +      +
    173D  PHE*     2.7    41.6    +      +       +      +
----------------------------------------------------------
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Residues in contact with ASN 170 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163D  HIS*     3.3    39.3    +      -       -      +
    164D  GLY*     5.5     0.2    -      -       -      -
    166D  ASP      2.8    18.8    +      -       -      +
    167D  PRO*     3.6    10.4    +      -       +      +
    168D  ARG      3.3     0.2    -      -       -      -
    169D  PHE*     1.3    77.7    -      -       -      +
    171D  ARG*     1.3    57.6    -      -       -      +
    173D  PHE*     3.5     5.5    +      -       -      +
    174D  ASN*     3.1    43.7    +      -       -      +
    231D  HIS*     3.9     8.9    -      -       -      -
    232D  VAL*     5.6     0.9    -      -       -      +
    235D  GLU*     2.7    36.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 171 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167D  PRO      3.2    11.6    +      -       -      +
    168D  ARG*     3.1    34.4    +      -       -      +
    169D  PHE      3.0     0.6    -      -       -      -
    170D  ASN*     1.3    78.9    -      -       -      +
    172D  VAL*     1.3    83.4    +      -       -      +
    173D  PHE      3.1     0.2    -      -       -      -
    174D  ASN*     4.0     5.7    -      -       -      +
    175D  GLU*     2.8    45.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 172 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123D  ALA      4.6     2.1    -      -       -      +
    126D  LEU*     4.2    11.7    -      -       +      +
    127D  MET*     3.7    32.9    -      -       +      +
    130D  ASP*     4.5     3.8    -      -       -      +
    168D  ARG*     3.2    30.2    +      -       -      +
    169D  PHE*     3.0    22.3    +      -       +      +
    171D  ARG*     1.3    98.9    -      -       -      +
    173D  PHE*     1.3    62.4    +      -       -      +
    175D  GLU*     3.5     4.5    +      -       -      +
    176D  GLY*     3.1    19.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 173 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127D  MET*     3.7    21.7    -      -       +      +
    133D  LEU*     5.7     1.6    -      -       +      -
    160D  PHE*     4.3     3.1    -      +       -      -
    163D  HIS*     3.3    45.5    -      +       +      +
    169D  PHE*     2.7    28.0    +      +       +      +
    170D  ASN*     3.6     5.6    -      -       -      +
    172D  VAL*     1.3    74.8    -      -       -      +
    174D  ASN*     1.3    73.6    +      -       -      +
    176D  GLY*     3.1     2.6    +      -       -      -
    177D  MET*     3.0    53.7    +      -       +      +
    404D  SAH      3.9    25.6    -      -       +      -
    604D  CIY      3.5    39.3    -      +       -      -
----------------------------------------------------------
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Residues in contact with ASN 174 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163D  HIS*     5.5     0.2    +      -       -      -
    170D  ASN*     3.1    29.0    +      -       -      +
    171D  ARG*     4.0     4.6    -      -       -      +
    173D  PHE*     1.3    89.9    -      -       -      +
    175D  GLU*     1.3    60.4    +      -       -      +
    177D  MET*     3.7     5.9    -      -       -      +
    178D  LYS*     2.8    32.3    +      -       -      +
    207D  GLY*     5.5     1.7    -      -       -      -
    208D  VAL*     4.0    29.2    +      -       +      +
    232D  VAL*     5.4     9.8    -      -       -      +
    235D  GLU*     3.1    26.7    +      -       -      -
    404D  SAH      5.2     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 175 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123D  ALA*     4.1     8.1    -      -       +      -
    171D  ARG*     2.8    29.7    +      -       +      +
    172D  VAL*     3.7     6.1    -      -       -      +
    174D  ASN*     1.3    77.9    -      -       -      +
    176D  GLY*     1.3    62.9    +      -       -      +
    178D  LYS*     4.0    24.4    +      -       -      +
    179D  ASN*     2.9    55.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 176 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123D  ALA*     3.8    24.9    -      -       -      +
    124D  LEU*     3.5    25.6    -      -       -      +
    127D  MET*     4.6     2.9    -      -       -      -
    172D  VAL      3.1    15.4    +      -       -      -
    173D  PHE      3.1     4.2    +      -       -      -
    175D  GLU*     1.3    79.0    -      -       -      +
    177D  MET*     1.3    60.5    +      -       -      +
    179D  ASN*     3.9     1.6    -      -       -      +
    180D  HIS*     3.3    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 177 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124D  LEU*     4.0     4.5    -      -       +      -
    127D  MET*     3.5    38.1    -      -       +      -
    173D  PHE*     3.0    40.6    +      -       +      +
    174D  ASN*     3.8     5.8    -      -       -      +
    176D  GLY*     1.3    75.5    -      -       -      +
    178D  LYS*     1.3    60.3    +      -       -      +
    180D  HIS*     3.5     3.1    +      -       -      +
    181D  SER*     2.9    33.4    +      -       -      -
    262D  LYS*     4.8     0.2    +      -       -      -
    263D  TRP*     3.8    20.4    -      -       +      -
    404D  SAH      3.3    25.5    -      -       +      +
    604D  CIY      3.7    41.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 178 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119D  VAL*     5.7     2.5    -      -       +      -
    174D  ASN      2.8    19.2    +      -       -      +
    175D  GLU*     3.8    28.3    +      -       -      +
    177D  MET*     1.3    74.7    -      -       -      +
    179D  ASN*     1.3    67.9    +      -       -      +
    181D  SER*     3.2     4.8    +      -       -      -
    182D  ILE*     2.9    54.7    +      -       +      +
    208D  VAL*     4.6    17.5    -      -       +      -
    210D  ALA*     4.4    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 179 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118D  GLY      4.3     1.8    +      -       -      +
    119D  VAL*     3.0    24.9    -      -       -      +
    120D  SER*     3.0    40.9    +      -       -      +
    123D  ALA*     3.7    16.9    -      -       +      +
    124D  LEU*     5.7     1.1    -      -       +      +
    175D  GLU*     2.9    48.4    +      -       -      +
    176D  GLY      3.9     4.5    -      -       -      +
    178D  LYS*     1.3    82.2    -      -       -      +
    180D  HIS*     1.3    61.5    +      -       -      +
    182D  ILE*     3.6     1.9    +      -       -      +
    183D  ILE*     3.3    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 180 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21C  LEU*     4.3    11.5    -      -       +      +
    121D  MET*     4.0    21.9    -      -       +      +
    124D  LEU*     3.8    21.5    -      -       +      +
    176D  GLY      3.3    14.7    +      -       -      +
    177D  MET      3.9     3.6    -      -       -      +
    178D  LYS      3.2     0.4    -      -       -      -
    179D  ASN*     1.3    79.1    -      -       -      +
    181D  SER*     1.3    58.0    +      -       -      +
    183D  ILE*     3.4     4.4    +      -       -      +
    184D  ILE*     3.0    62.1    +      -       +      +
    262D  LYS*     3.2    26.9    +      -       -      +
    263D  TRP*     3.7    42.5    -      +       +      -
    293D  VAL*     6.3     0.4    -      -       +      -
    351D  ALA      5.6     2.0    +      -       -      -
    353D  ALA*     5.5     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 181 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177D  MET      2.9    13.8    +      -       -      -
    178D  LYS*     3.2     5.4    +      -       -      -
    180D  HIS*     1.3    74.3    -      -       -      +
    182D  ILE*     1.3    58.1    +      -       -      +
    185D  THR*     2.7    40.4    +      -       -      -
    210D  ALA*     5.2     3.6    -      -       -      -
    211D  THR*     3.2    26.8    +      -       -      -
    262D  LYS*     3.2    22.2    +      -       -      +
    404D  SAH      2.6    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 182 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117D  ASP*     4.1    23.2    -      -       +      +
    119D  VAL*     3.9    32.8    -      -       +      -
    178D  LYS*     2.9    48.7    +      -       +      +
    179D  ASN      4.0     3.4    -      -       -      +
    181D  SER*     1.3    76.7    -      -       -      +
    183D  ILE*     1.3    61.8    +      -       -      +
    185D  THR*     4.4     3.8    -      -       -      -
    186D  LYS*     3.5    21.1    +      -       -      +
    210D  ALA*     4.4    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 183 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  CYS*     5.2     7.6    -      -       -      -
    111D  PHE*     6.1     5.6    -      -       +      -
    115D  ASN*     4.5     8.1    -      -       -      +
    119D  VAL*     3.5    17.5    -      -       +      +
    120D  SER*     3.9    28.3    -      -       -      -
    121D  MET*     3.6    33.9    -      -       +      +
    179D  ASN      3.3    15.8    +      -       -      +
    180D  HIS      3.7     6.1    -      -       -      +
    181D  SER      3.1     0.8    -      -       -      -
    182D  ILE*     1.3    78.4    -      -       -      +
    184D  ILE*     1.3    69.3    +      -       +      +
    186D  LYS*     3.5    13.9    +      -       -      +
    187D  LYS*     3.5    17.5    +      -       +      +
    350D  TYR*     5.7     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 184 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121D  MET*     5.0     2.5    -      -       +      -
    180D  HIS*     3.0    48.7    +      -       +      +
    181D  SER      4.1     1.3    -      -       -      +
    183D  ILE*     1.3    83.4    -      -       +      +
    185D  THR*     1.3    60.5    +      -       -      +
    187D  LYS*     3.2     6.8    +      -       +      +
    188D  LEU*     2.8    30.4    +      -       +      +
    262D  LYS*     4.2     9.6    -      -       +      -
    293D  VAL*     4.1    17.9    -      -       +      -
    349D  ILE*     4.7     8.7    -      -       +      -
    350D  TYR*     4.2    23.8    -      -       +      +
    351D  ALA*     4.5    12.6    -      -       +      +
    353D  ALA*     4.1    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 185 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181D  SER*     2.7    32.3    +      -       -      -
    182D  ILE*     4.4     3.8    -      -       -      -
    184D  ILE*     1.3    72.9    -      -       -      +
    186D  LYS*     1.3    62.6    +      -       -      +
    188D  LEU*     3.6    11.4    -      -       +      +
    189D  LEU*     3.0    28.0    +      -       +      +
    211D  THR*     3.6    33.9    +      -       +      +
    214D  ALA*     3.8    29.6    -      -       +      -
    215D  ILE*     4.1    15.9    -      -       +      -
    262D  LYS*     5.0     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 186 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116D  GLU*     5.2     9.2    -      -       -      +
    117D  ASP*     4.1    26.9    +      -       -      +
    182D  ILE      3.5    12.0    +      -       -      +
    183D  ILE*     3.5    10.9    +      -       -      +
    184D  ILE      3.2     0.6    -      -       -      -
    185D  THR*     1.3    81.4    -      -       -      +
    187D  LYS*     1.3    66.8    +      -       +      +
    189D  LEU*     3.4    14.6    +      -       -      +
    190D  GLU*     3.3    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 187 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183D  ILE*     3.5    12.9    +      -       +      +
    184D  ILE*     3.2    10.2    +      -       +      +
    186D  LYS*     1.3    81.0    -      -       +      +
    188D  LEU*     1.3    65.8    +      -       -      +
    190D  GLU*     3.0    36.2    +      -       +      +
    191D  LEU*     3.1    25.8    -      -       +      +
    349D  ILE*     4.0    15.7    -      -       +      +
    350D  TYR*     3.9    50.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 188 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184D  ILE*     2.8    19.5    +      -       +      +
    185D  THR*     3.6    13.9    -      -       +      +
    186D  LYS      3.2     0.2    -      -       -      -
    187D  LYS*     1.3    71.8    -      -       -      +
    189D  LEU*     1.3    57.8    +      -       +      +
    190D  GLU      2.9     5.3    +      -       -      -
    191D  LEU      4.6     0.2    -      -       -      +
    192D  TYR*     2.8    63.1    +      -       +      +
    195D  PHE*     3.9    28.3    -      -       +      -
    211D  THR*     5.8     1.8    -      -       +      -
    215D  ILE*     4.9     7.2    -      -       +      -
    260D  LEU*     5.2     3.4    -      -       +      -
    291D  VAL*     5.8     0.9    -      -       +      -
    293D  VAL*     4.3    25.1    -      -       +      -
    349D  ILE*     3.8    29.1    -      -       +      +
    355D  ALA*     4.0    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 189 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185D  THR*     3.0    35.4    +      -       +      +
    186D  LYS*     3.7     8.3    -      -       -      +
    187D  LYS      3.3     0.2    -      -       -      -
    188D  LEU*     1.3    76.2    -      -       +      +
    190D  GLU*     1.3    60.4    +      -       +      +
    192D  TYR      4.3     9.6    -      -       -      +
    193D  HIS*     6.1     1.2    -      -       -      -
    195D  PHE*     4.5     8.5    -      -       +      -
    214D  ALA*     3.9    22.2    -      -       +      +
    215D  ILE*     3.9    20.9    -      -       +      -
    218D  HIS*     4.1    35.5    +      -       +      +
    219D  TYR*     4.0    29.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 190 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186D  LYS*     3.3    38.8    -      -       +      +
    187D  LYS*     3.0    35.7    +      -       -      +
    188D  LEU      2.9     0.8    -      -       -      -
    189D  LEU*     1.3    82.8    -      -       +      +
    191D  LEU*     1.3    72.2    +      -       +      +
    192D  TYR      3.8     0.4    -      -       -      -
    193D  HIS*     5.1     8.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 191 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187D  LYS*     3.1    20.5    +      -       +      +
    190D  GLU*     1.3   102.1    -      -       +      +
    192D  TYR*     1.3    62.0    +      -       -      +
    193D  HIS*     4.1    12.6    +      -       -      -
    347D  THR*     4.4    12.8    -      -       +      +
    348D  TYR*     4.0     8.3    -      -       +      +
    349D  ILE*     3.1    47.6    -      -       +      +
    350D  TYR*     5.9     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 192 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188D  LEU*     2.8    37.1    +      -       +      +
    189D  LEU*     4.3    10.0    -      -       -      +
    190D  GLU      3.8     0.6    -      -       -      -
    191D  LEU*     1.3    79.8    -      -       -      +
    193D  HIS*     1.3    66.8    +      -       -      +
    194D  GLY*     3.3    38.4    -      -       -      -
    195D  PHE*     3.8    39.2    +      +       -      -
    219D  TYR*     4.5     7.6    +      -       -      -
    289D  LYS*     3.4     1.7    -      -       -      -
    291D  VAL*     3.1    29.8    -      -       +      +
    347D  THR*     4.7    13.2    -      -       +      -
    349D  ILE*     4.5     4.3    -      -       +      -
    355D  ALA*     4.1    18.2    -      -       +      -
    357D  GLU*     2.6    33.9    +      -       +      +
----------------------------------------------------------
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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