Contacts of the helix formed by residues 141 - 166 (chain B) in PDB entry 4MBS


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 THR 141 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  LEU*     3.4    23.4    -      -       +      +
     64B  MET*     3.8    12.1    -      -       -      +
    138B  LYS      4.2    11.2    -      -       -      +
    139B  ALA      3.1    16.8    +      -       -      +
    140B  ARG*     1.3    74.7    -      -       -      +
    142B  VAL*     1.4    66.7    +      -       -      +
    143B  THR*     3.0    16.0    +      -       -      +
    144B  PHE*     3.5    18.1    +      -       +      +
    145B  GLY      3.1    17.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 142 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  PHE*     6.3     2.7    -      -       +      -
     61B  LEU      3.8     9.4    -      -       -      +
     62B  LYS*     3.4    35.9    -      -       -      +
     63B  SER*     3.8    10.8    -      -       -      +
     64B  MET*     4.3     2.2    -      -       -      +
     67B  ILE*     3.9    26.6    -      -       +      +
    141B  THR*     1.4    71.7    +      -       -      +
    143B  THR*     1.3    63.1    +      -       +      +
    145B  GLY*     3.1     3.5    +      -       -      +
    146B  VAL*     2.9    33.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308A  LEU*     3.9    15.0    -      -       +      +
    309A  LEU*     3.0    35.8    -      -       +      +
    312A  PHE*     3.7    47.0    -      -       +      -
    141B  THR*     3.0     5.0    +      -       -      -
    142B  VAL*     1.3    77.6    -      -       +      +
    144B  PHE*     1.4    49.9    +      -       -      -
    146B  VAL*     3.2     8.1    +      -       -      +
    147B  VAL*     2.8    42.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 144 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  PHE*     3.5    34.8    -      +       -      -
    305A  ARG*     6.6     0.4    -      -       +      -
     64B  MET*     4.0    19.1    -      -       +      -
     68B  TYR*     4.6     3.6    -      -       -      -
    139B  ALA*     3.9    17.9    -      -       +      +
    141B  THR*     3.5    24.6    +      -       +      +
    142B  VAL      3.4     0.6    -      -       -      -
    143B  THR*     1.4    78.7    +      -       -      +
    145B  GLY*     1.3    49.4    +      -       -      +
    147B  VAL*     3.4     6.9    +      -       +      +
    148B  THR*     2.9    61.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 145 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64B  MET*     4.3     7.4    -      -       -      -
     67B  ILE*     3.8    13.0    -      -       -      -
     68B  TYR*     3.6    16.6    -      -       -      -
    141B  THR      3.1    14.8    +      -       -      -
    142B  VAL      3.1     5.3    +      -       -      -
    144B  PHE*     1.3    75.9    -      -       -      +
    146B  VAL*     1.3    51.8    +      -       -      +
    148B  THR*     2.9    17.4    +      -       -      -
    149B  SER*     2.8    26.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 146 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  PHE*     4.3    28.0    -      -       +      -
     67B  ILE*     4.1    26.2    -      -       +      -
    142B  VAL*     2.9    21.1    +      -       +      +
    143B  THR*     3.6    11.0    -      -       -      +
    145B  GLY*     1.3    73.9    -      -       -      +
    147B  VAL*     1.4    67.1    +      -       +      +
    149B  SER*     3.2     5.2    +      -       -      -
    150B  VAL*     3.1    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 147 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  ALA*     4.4    18.8    -      -       +      +
    299A  PHE*     3.6    30.1    -      -       +      -
    308A  LEU*     5.7     9.0    -      -       +      -
    312A  PHE*     6.3     3.4    -      -       +      -
    143B  THR*     2.8    27.7    +      -       -      +
    144B  PHE*     3.8     8.7    -      -       +      +
    146B  VAL*     1.4    75.0    -      -       +      +
    148B  THR*     1.4    60.3    +      -       -      +
    150B  VAL*     3.5     7.6    +      -       -      +
    151B  ILE*     3.2    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 148 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  PHE*     3.6    30.1    -      -       +      -
     68B  TYR*     2.8    25.9    +      -       -      +
    121B  LEU*     4.8    10.8    -      -       +      -
    144B  PHE*     2.9    37.1    +      -       +      +
    145B  GLY      2.9    10.2    +      -       -      -
    147B  VAL*     1.4    71.8    -      -       -      +
    149B  SER*     1.4    54.3    +      -       -      +
    151B  ILE*     3.5     4.1    +      -       -      +
    152B  THR*     2.6    40.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 149 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67B  ILE*     3.5     6.3    -      -       -      +
     68B  TYR*     3.9     4.3    -      -       -      -
     71B  ASN*     3.2    34.4    +      -       -      -
    118B  PHE*     3.7    17.1    -      -       -      -
    145B  GLY      2.8    22.0    +      -       -      -
    146B  VAL*     3.2     9.6    +      -       -      -
    148B  THR*     1.4    74.1    +      -       -      +
    150B  VAL*     1.3    61.5    +      -       -      +
    152B  THR*     3.4     2.6    +      -       -      -
    153B  TRP*     2.9    33.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 150 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  PHE*     5.2     6.5    -      -       +      -
    146B  VAL*     3.1    23.2    +      -       +      +
    147B  VAL*     3.6     9.9    -      -       -      +
    148B  THR      3.4     0.2    -      -       -      -
    149B  SER*     1.3    73.1    -      -       -      +
    151B  ILE*     1.3    69.0    +      -       +      +
    153B  TRP*     3.3    10.4    +      -       -      +
    154B  VAL*     3.1    34.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 151 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  PHE*     4.6    10.5    -      -       +      -
    295A  ILE*     4.3    26.0    -      -       +      -
    298A  ALA*     5.8     0.9    -      -       +      -
    299A  PHE*     3.4    32.8    -      -       +      -
   1107A  OLC      4.6    11.4    -      -       +      -
    147B  VAL*     3.2    28.6    +      -       +      +
    148B  THR*     4.0     6.1    -      -       -      +
    150B  VAL*     1.3    78.2    -      -       +      +
    152B  THR*     1.3    53.5    +      -       -      +
    154B  VAL*     3.1     9.9    +      -       -      +
    155B  VAL*     2.8    47.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 152 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  SER*     4.9     0.9    -      -       -      -
    117B  PHE*     3.5    35.3    -      -       +      -
    118B  PHE*     3.6    28.3    -      -       +      -
    121B  LEU*     3.4    18.9    -      -       +      +
    148B  THR*     2.6    22.3    +      -       -      -
    149B  SER      3.5     5.6    -      -       -      -
    150B  VAL      3.3     0.4    -      -       -      -
    151B  ILE*     1.3    77.1    -      -       -      +
    153B  TRP*     1.4    54.6    +      -       -      +
    155B  VAL*     3.4     8.1    +      -       -      +
    156B  ALA*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 153 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71B  ASN*     2.7    44.2    +      -       -      -
     74B  ILE*     4.0    19.1    -      -       +      -
     75B  SER*     3.7    19.5    -      -       -      -
     78B  PHE*     3.8    24.7    -      +       -      -
    110B  ILE*     3.9    18.6    -      -       +      -
    114B  SER*     3.3    28.5    -      -       -      -
    118B  PHE*     3.5    14.8    -      +       -      -
    149B  SER      2.9    30.4    +      -       -      -
    150B  VAL*     3.3     9.8    +      -       -      +
    152B  THR*     1.4    73.4    -      -       -      +
    154B  VAL*     1.4    58.3    +      -       +      +
    156B  ALA*     3.3     5.0    +      -       -      +
    157B  VAL*     3.0    35.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 154 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LEU*     4.9     4.7    -      -       +      -
     43A  PHE*     3.9    44.2    -      -       +      -
   1107A  OLC      4.9     4.9    -      -       +      -
    150B  VAL*     3.1    21.3    +      -       +      +
    151B  ILE*     3.1     9.7    +      -       -      +
    153B  TRP*     1.4    72.5    -      -       +      +
    155B  VAL*     1.3    65.3    +      -       +      +
    157B  VAL*     3.3     8.3    +      -       -      +
    158B  PHE*     3.0    52.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 155 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1107A  OLC      4.0    29.6    -      -       +      -
    117B  PHE*     3.9    20.6    -      -       +      -
    151B  ILE*     2.8    28.4    +      -       +      +
    152B  THR*     3.4     7.8    +      -       -      +
    154B  VAL*     1.3    75.9    -      -       -      +
    156B  ALA*     1.4    56.3    +      -       -      +
    158B  PHE*     3.3     9.4    +      -       +      +
    159B  ALA*     2.9    29.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 156 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110B  ILE*     4.2    12.3    -      -       +      +
    113B  PHE*     4.2     3.0    -      -       +      -
    114B  SER*     3.9    35.2    -      -       -      +
    117B  PHE*     3.9    12.3    -      -       +      -
    152B  THR      3.0    13.8    +      -       -      +
    153B  TRP*     3.6     9.0    -      -       -      +
    154B  VAL      3.3     0.2    -      -       -      -
    155B  VAL*     1.4    76.2    -      -       -      +
    157B  VAL*     1.4    56.8    +      -       -      +
    159B  ALA*     3.4     5.1    +      -       -      +
    160B  SER*     2.8    33.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 157 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LEU*     3.7    33.0    -      -       +      -
    110B  ILE*     4.1    33.9    -      -       +      -
    153B  TRP*     3.0    22.4    +      -       +      +
    154B  VAL*     3.3     9.4    +      -       -      +
    156B  ALA*     1.4    71.9    -      -       -      +
    158B  PHE*     1.3    63.7    +      -       -      +
    160B  SER*     3.3     2.9    +      -       -      -
    161B  LEU*     3.1    28.3    +      -       +      +
    164B  ILE*     4.9     1.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 158 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  LEU*     3.7    25.8    -      -       +      -
     39A  LEU*     3.4    44.0    -      -       +      -
     40A  VAL*     4.1    16.2    -      -       +      -
     43A  PHE*     5.3     4.7    -      +       +      -
    291A  CYS*     5.7     0.2    -      -       -      -
   1107A  OLC      3.7    54.3    -      -       +      +
    154B  VAL*     3.0    41.6    +      -       +      -
    155B  VAL*     3.6     9.4    -      -       -      +
    157B  VAL*     1.3    78.1    -      -       -      +
    159B  ALA*     1.3    59.3    +      -       -      +
    160B  SER      3.5     0.2    +      -       -      -
    161B  LEU*     3.6    21.0    +      -       +      +
    162B  PRO*     3.9     5.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 159 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113B  PHE*     3.8    18.2    -      -       +      -
    117B  PHE*     5.1     2.9    -      -       +      -
    155B  VAL*     2.9    18.4    +      -       +      +
    156B  ALA*     3.7     8.3    -      -       -      +
    157B  VAL      3.3     0.2    -      -       -      -
    158B  PHE*     1.3    76.9    -      -       -      +
    160B  SER*     1.3    56.8    +      -       -      +
    161B  LEU      3.5     0.2    -      -       -      -
    163B  ASN*     3.4     2.3    +      -       -      -
    197B  LYS*     2.8    38.0    +      -       +      +
    201B  LEU*     4.1    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 160 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  PHE*     3.3    22.9    -      -       -      +
    110B  ILE*     3.3    32.4    +      -       -      -
    113B  PHE*     3.3     6.9    -      -       -      -
    156B  ALA      2.8    20.9    +      -       -      -
    157B  VAL      3.8     2.0    -      -       -      -
    158B  PHE      3.3     0.2    -      -       -      -
    159B  ALA*     1.3    73.7    -      -       -      +
    161B  LEU*     1.3    64.4    +      -       -      +
    163B  ASN*     3.2    19.8    +      -       -      +
    164B  ILE*     3.3    24.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 161 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  PRO*     4.5     9.9    -      -       +      -
     36A  LEU*     3.8    32.8    -      -       +      +
     39A  LEU*     3.7    33.9    -      -       +      -
    157B  VAL*     3.1    15.4    +      -       +      +
    158B  PHE*     3.6    24.9    -      -       +      +
    160B  SER*     1.3    72.3    -      -       -      +
    162B  PRO*     1.4    73.7    -      -       +      +
    163B  ASN      3.2     0.7    +      -       -      -
    164B  ILE*     3.2    25.0    +      -       +      +
    165B  ILE*     3.2    30.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 162 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  LEU*     4.3    21.1    -      -       +      -
    158B  PHE      3.9     7.6    -      -       -      +
    161B  LEU*     1.4    89.3    -      -       +      +
    163B  ASN*     1.3    57.0    +      -       -      +
    165B  ILE*     3.2     4.4    +      -       +      +
    166B  PHE*     3.1    36.2    +      -       +      -
    190B  TRP*     4.4    15.5    -      -       +      -
    193B  PHE*     5.8     2.7    -      -       +      -
    194B  GLN*     3.5    20.4    -      -       -      +
    197B  LYS*     3.6    24.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 163 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105B  THR*     4.8     2.0    -      -       -      -
    109B  PHE*     3.4    44.3    -      -       +      -
    113B  PHE*     5.0     0.4    -      -       -      -
    159B  ALA      3.4     7.5    +      -       -      -
    160B  SER*     3.2    17.8    +      -       -      +
    161B  LEU      3.2     0.2    -      -       -      -
    162B  PRO*     1.3    74.7    -      -       -      +
    164B  ILE*     1.4    54.7    +      -       -      +
    166B  PHE*     3.5     4.2    +      -       -      +
    167B  THR*     2.6    33.4    +      -       -      -
    180B  SER*     4.9     4.7    +      -       -      -
    182B  PHE*     5.4     2.6    -      -       -      -
    194B  GLN*     3.0    33.3    +      -       -      +
    197B  LYS*     3.4    25.5    -      -       -      +
    198B  ILE*     5.4     0.2    -      -       -      +
   1101B  MRV      4.9     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 164 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102B  GLN*     2.8    55.0    +      -       +      +
    105B  THR*     4.8     5.6    -      -       +      +
    106B  GLY*     3.6    29.6    -      -       -      +
    109B  PHE*     5.6     0.7    -      -       +      -
    110B  ILE*     4.4    10.1    -      -       +      -
    157B  VAL*     4.9     1.6    -      -       +      +
    160B  SER*     3.4    31.6    -      -       -      +
    161B  LEU*     3.2    21.4    +      -       +      +
    163B  ASN*     1.4    75.1    -      -       +      +
    165B  ILE*     1.3    57.5    +      -       +      +
    167B  THR*     3.4    13.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 165 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  ARG*     3.3    50.2    +      -       +      +
     32A  LEU*     3.9    24.5    -      -       +      +
     35A  PRO*     3.8    26.7    -      -       +      -
    102B  GLN*     3.9     8.1    +      -       -      +
    161B  LEU*     3.2    34.4    +      -       +      +
    162B  PRO*     3.2     9.2    +      -       +      +
    164B  ILE*     1.3    80.1    -      -       +      +
    166B  PHE*     1.3    76.3    +      -       +      +
    167B  THR      3.2     8.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 166 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  ILE*     4.5    18.8    -      -       +      -
     31A  ARG*     4.8    11.7    -      -       +      -
     32A  LEU*     3.7    31.4    -      -       +      -
    162B  PRO*     3.1    25.9    +      -       +      +
    163B  ASN*     3.5     2.6    +      -       -      +
    164B  ILE      3.4     0.2    -      -       -      -
    165B  ILE*     1.3    86.7    -      -       +      +
    167B  THR*     1.3    58.9    +      -       -      +
    168B  ARG*     4.1     1.0    +      -       -      +
    180B  SER*     3.5     3.3    -      -       -      +
    181B  HIS*     2.7    58.2    +      -       -      +
    182B  PHE*     4.3    16.8    -      +       +      -
    183B  PRO*     3.8    29.6    -      -       +      -
    190B  TRP*     4.2    20.4    -      +       -      -
    194B  GLN*     5.3     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