Contacts of the helix formed by residues 220 - 246 (chain P) in PDB entry 1PP9


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 PHE 220 (chain P).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18P  PHE*     3.2    35.7    -      +       -      +
     19P  ILE      3.9     1.6    +      -       -      -
     21P  LEU*     2.8    25.3    +      -       +      +
     23P  ALA*     4.7     2.7    -      -       +      -
    218P  ILE      3.6     1.0    +      -       -      -
    219P  PRO*     1.3    72.2    -      -       -      +
    221P  HIS*     1.3    56.4    +      -       -      +
    224P  TYR*     2.8    52.1    +      +       +      -
    225P  THR*     3.2    33.0    +      -       +      -
    228P  ASP*     3.4    22.7    -      -       +      -
   3002P   UQ      3.1    64.2    -      +       +      -
----------------------------------------------------------
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Residues in contact with HIS 221 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    436N  ARG*     3.2    33.8    +      -       -      +
   3012N  PEE      2.9    37.4    +      -       -      -
     19P  ILE*     3.3    43.7    +      -       +      +
    219P  PRO*     3.3    10.8    -      -       -      +
    220P  PHE*     1.3    78.8    -      -       +      +
    222P  PRO*     1.3    69.4    -      -       +      +
    223P  TYR      3.6     0.7    -      -       -      -
    225P  THR*     2.9    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 222 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435N  ASN*     4.0    25.1    -      -       +      +
    436N  ARG*     4.0    19.3    -      -       +      -
   3012N  PEE      4.8     4.3    -      -       -      +
    220P  PHE      3.8     0.2    -      -       -      -
    221P  HIS*     1.3    96.2    -      -       +      +
    223P  TYR*     1.3    79.3    +      -       +      +
    224P  TYR      3.5     0.7    -      -       -      -
    225P  THR*     3.1    20.6    +      -       -      +
    226P  ILE*     3.2    18.2    +      -       +      +
    226Q  LYS*     4.0    29.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 223 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433N  ASP*     2.5    39.4    +      -       -      -
    435N  ASN*     2.8    21.9    +      -       -      -
    218P  ILE*     3.9    20.9    -      -       +      -
    219P  PRO*     3.5    24.9    -      -       +      +
    220P  PHE      3.5     1.8    +      -       -      -
    222P  PRO*     1.3    84.6    -      -       +      +
    224P  TYR*     1.3    62.5    +      -       +      +
    226P  ILE*     3.4     1.2    -      -       -      +
    227P  LYS*     3.3    15.4    +      -       -      +
    226Q  LYS*     3.4    22.9    -      -       +      -
    227Q  TRP*     2.8    49.9    +      +       +      +
    229Q  VAL*     3.8    11.3    -      -       -      +
    230Q  LEU*     3.5    29.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 224 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23P  ALA*     3.7    24.0    -      -       +      -
     24P  PRO      2.6    28.5    +      -       -      -
     25P  SER      3.2    18.4    +      -       -      -
     27P  ILE*     3.2    38.4    +      -       +      +
    218P  ILE*     3.6    15.3    -      -       +      -
    220P  PHE*     2.8    41.3    +      +       +      +
    223P  TYR*     1.3    74.1    -      -       +      +
    225P  THR*     1.3    61.7    +      -       -      +
    226P  ILE      3.3     0.7    -      -       -      -
    227P  LYS*     3.7    23.1    -      -       +      -
    228P  ASP*     2.8    39.3    +      -       -      +
   3002P   UQ      4.6     4.0    -      -       -      -
    227Q  TRP*     3.4    21.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with THR 225 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18P  PHE*     5.5     3.8    -      -       +      -
     19P  ILE*     5.4     2.7    -      -       +      -
    220P  PHE*     3.2    31.4    +      -       +      +
    221P  HIS*     2.9    43.3    +      -       +      +
    222P  PRO*     3.1     9.9    +      -       -      +
    224P  TYR*     1.3    78.7    -      -       -      +
    226P  ILE*     1.3    64.2    +      -       -      +
    228P  ASP*     3.7     4.0    -      -       -      +
    229P  ILE*     3.1    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 226 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222P  PRO*     3.2    18.6    -      -       +      +
    223P  TYR      3.4     7.9    -      -       -      +
    225P  THR*     1.3    80.8    +      -       -      +
    227P  LYS*     1.3    67.1    +      -       -      +
    229P  ILE*     3.3    18.6    +      -       +      -
    230P  LEU*     3.1    21.5    +      -       -      +
    219Q  VAL*     4.0    19.7    -      -       +      +
    222Q  MET*     4.2    27.4    -      -       +      +
    223Q  LYS*     3.8    34.5    -      -       +      +
    226Q  LYS*     4.7    11.7    -      -       +      -
    227Q  TRP*     4.1    10.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 227 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27P  ILE      3.1    27.1    +      -       -      -
     28P  SER*     3.7    15.8    +      -       -      +
     29P  SER*     4.0     3.7    +      -       -      +
     32P  ASN*     3.2    20.2    +      -       -      +
    223P  TYR      3.3    14.2    +      -       -      +
    224P  TYR*     3.9    25.3    -      -       +      +
    225P  THR      3.3     0.6    -      -       -      -
    226P  ILE*     1.3    82.8    -      -       -      +
    228P  ASP*     1.3    59.6    +      -       -      +
    230P  LEU*     3.3     8.1    +      -       +      +
    231P  GLY      3.0    21.3    +      -       -      -
    223Q  LYS*     4.2    27.6    -      -       +      +
    227Q  TRP*     4.3    10.2    -      -       +      +
   3003Q  CDL      3.5    31.0    -      -       -      +
   3004T  CDL      5.2     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 228 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32P  ASN*     3.7    20.4    +      -       -      +
     35P  SER*     3.4    25.0    +      -       -      +
     36P  LEU*     5.0     0.9    -      -       -      +
     39P  ILE*     5.2     1.2    -      -       -      +
    220P  PHE*     3.4    13.6    -      -       -      -
    224P  TYR*     2.8    24.6    +      -       -      +
    225P  THR*     3.7     5.8    -      -       -      +
    227P  LYS*     1.3    75.4    -      -       -      +
    229P  ILE*     1.3    56.2    +      -       +      +
    231P  GLY*     3.2     1.0    +      -       -      -
    232P  ALA*     2.8    34.2    +      -       -      +
   3002P   UQ      3.0    33.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 229 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225P  THR*     3.1    27.1    +      -       -      +
    226P  ILE*     3.6    18.6    -      -       +      +
    227P  LYS      3.3     0.2    -      -       -      -
    228P  ASP*     1.3    72.6    -      -       +      +
    230P  LEU*     1.3    66.9    +      -       -      +
    232P  ALA*     3.3     8.1    +      -       -      +
    233P  LEU*     3.0    22.6    +      -       +      +
    219Q  VAL*     4.1    23.1    -      -       +      -
   3006Q  PEE      4.0    25.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 230 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226P  ILE      3.1    13.6    +      -       -      +
    227P  LYS*     3.5     9.0    -      -       -      +
    229P  ILE*     1.3    78.4    -      -       -      +
    231P  GLY*     1.3    63.1    +      -       -      +
    233P  LEU*     3.2     6.7    +      -       +      +
    234P  LEU*     3.2    27.5    +      -       +      +
    216Q  LEU*     4.2    25.4    -      -       +      +
    219Q  VAL*     3.9    22.7    -      -       +      -
    220Q  TYR*     3.8    39.7    -      -       +      +
    223Q  LYS*     4.3    13.7    -      -       +      -
   3003Q  CDL      4.0    29.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 231 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32P  ASN*     4.0     8.1    -      -       -      -
     36P  LEU*     3.6    16.2    -      -       -      +
    227P  LYS      3.0    13.2    +      -       -      -
    228P  ASP      3.2     3.6    +      -       -      -
    230P  LEU*     1.3    78.3    -      -       -      +
    232P  ALA*     1.3    60.9    +      -       -      +
    234P  LEU*     3.1     5.9    +      -       -      +
    235P  LEU      2.9    18.4    +      -       -      -
   3003Q  CDL      3.9    26.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 232 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36P  LEU*     3.7    11.6    -      -       -      +
     39P  ILE*     3.4    27.1    -      -       +      -
    228P  ASP      2.8    17.0    +      -       -      +
    229P  ILE*     3.5     9.4    -      -       -      +
    231P  GLY*     1.3    75.8    -      -       -      +
    233P  LEU*     1.3    57.5    +      -       -      +
    235P  LEU*     3.2     3.0    +      -       -      +
    236P  ILE*     2.9    35.1    +      -       +      +
   3006Q  PEE      4.4    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 233 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229P  ILE*     3.0    14.4    +      -       +      +
    230P  LEU*     3.5     8.1    -      -       -      +
    231P  GLY      3.2     0.2    -      -       -      -
    232P  ALA*     1.3    76.4    -      -       -      +
    234P  LEU*     1.3    56.6    +      -       -      +
    236P  ILE*     3.3     3.2    +      -       +      -
    237P  LEU*     3.0    24.9    +      -       -      +
    212Q  MET*     3.6    18.6    -      -       +      +
    215Q  LEU*     4.0    21.3    -      -       +      +
    216Q  LEU*     3.8    20.2    -      -       +      -
    219Q  VAL*     3.5    40.6    -      -       +      -
   3006Q  PEE      3.7    49.4    -      -       +      -
     47R  VAL*     6.0     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 234 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230P  LEU*     3.2    15.9    +      -       +      +
    231P  GLY      3.1     8.1    +      -       -      +
    233P  LEU*     1.3    76.8    -      -       -      +
    235P  LEU*     1.3    63.4    +      -       -      +
    237P  LEU*     3.3    14.2    +      -       +      +
    238P  ALA*     3.0    22.7    +      -       -      +
    216Q  LEU*     3.7    30.5    -      -       +      -
   3003Q  CDL      3.5    77.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 235 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36P  LEU*     3.7    43.1    -      -       +      +
     39P  ILE*     3.9    21.1    -      -       +      -
     40P  CYS*     4.0     7.6    -      -       -      -
     43P  LEU*     6.0     3.1    -      -       +      -
     89P  MET*     3.7    35.4    -      -       +      -
     93P  CYS*     4.0    18.4    -      -       -      -
    231P  GLY      2.9    12.0    +      -       -      +
    232P  ALA      3.2     8.0    +      -       -      +
    234P  LEU*     1.3    77.9    -      -       -      +
    236P  ILE*     1.3    59.7    +      -       +      +
    238P  ALA*     3.3     3.8    +      -       -      +
    239P  LEU*     2.9    30.3    +      -       +      +
   3003Q  CDL      4.1    11.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 236 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39P  ILE*     5.6     2.9    -      -       +      -
     43P  LEU*     5.4     5.6    -      -       +      -
    232P  ALA*     2.9    21.7    +      -       +      +
    233P  LEU*     3.7     6.3    -      -       -      +
    235P  LEU*     1.3    79.5    -      -       +      +
    237P  LEU*     1.3    59.0    +      -       -      +
    239P  LEU*     4.3     7.9    -      -       +      -
    240P  MET*     2.8    35.6    +      -       +      +
    212Q  MET*     3.6    16.8    -      -       +      -
   3006Q  PEE      3.8    96.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 237 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233P  LEU      3.0    14.2    +      -       -      +
    234P  LEU*     3.5    17.9    -      -       +      +
    235P  LEU      3.2     0.2    -      -       -      -
    236P  ILE*     1.3    76.5    -      -       -      +
    238P  ALA*     1.3    57.3    +      -       -      +
    240P  MET*     3.7     0.7    -      -       -      +
    241P  LEU*     2.9    55.8    +      -       +      +
    208Q  MET*     3.6    26.9    -      -       +      -
    209Q  LEU*     4.5     7.2    -      -       +      -
    212Q  MET*     3.7    25.5    -      -       +      +
    216Q  LEU*     4.0    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 238 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89P  MET*     3.8    18.6    -      -       +      -
    234P  LEU      3.0    11.2    +      -       -      +
    235P  LEU*     3.6     8.3    -      -       -      +
    237P  LEU*     1.3    77.2    -      -       -      +
    239P  LEU*     1.3    62.7    +      -       -      +
    241P  LEU*     3.4    13.2    +      -       -      +
    242P  LEU*     3.3    26.3    +      -       -      +
   3003Q  CDL      3.6    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 239 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43P  LEU*     3.9    28.0    -      -       +      -
     82P  MET*     4.1    18.2    -      -       +      +
     85P  ASN*     3.8    15.0    -      -       +      -
     86P  GLY*     3.7    32.5    -      -       -      +
     89P  MET*     3.9    15.9    -      -       +      -
    235P  LEU*     2.9    20.2    +      -       +      +
    236P  ILE*     3.7     8.5    -      -       -      +
    237P  LEU      3.3     0.2    -      -       -      -
    238P  ALA*     1.3    77.0    -      -       -      +
    240P  MET*     1.3    75.9    +      -       -      +
    242P  LEU*     3.1     8.0    +      -       -      +
    243P  VAL*     2.9    32.4    +      -       +      +
   3006Q  PEE      5.5     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 240 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78P  ILE*     4.0    24.2    -      -       +      -
     82P  MET*     4.2    12.3    -      -       +      -
    236P  ILE*     2.8    37.0    +      -       +      +
    237P  LEU      4.1     0.2    -      -       -      +
    239P  LEU*     1.3    90.9    -      -       -      +
    241P  LEU*     1.3    60.4    +      -       -      +
    243P  VAL*     3.7    16.8    -      -       +      +
    244P  LEU*     2.9    46.7    +      -       +      +
    208Q  MET*     3.9    29.4    -      -       +      +
   3006Q  PEE      3.9    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 241 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237P  LEU*     2.9    43.6    +      -       +      +
    238P  ALA*     3.7    11.2    -      -       -      +
    239P  LEU      3.2     0.4    -      -       -      -
    240P  MET*     1.3    77.1    -      -       -      +
    242P  LEU*     1.3    59.9    +      -       +      +
    245P  PHE*     3.0    48.2    +      -       +      +
    246P  ALA*     3.5     2.5    +      -       -      +
     17Q  LEU*     5.9     1.1    -      -       +      -
    208Q  MET*     4.2     4.3    -      -       +      -
    209Q  LEU*     4.0    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 242 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85P  ASN*     3.7    23.8    -      -       +      +
     89P  MET*     3.9    28.5    -      -       +      -
     92P  ILE*     5.7     0.7    -      -       +      -
    238P  ALA      3.3     9.6    +      -       -      +
    239P  LEU      3.1     7.5    +      -       -      +
    241P  LEU*     1.3    80.4    -      -       +      +
    243P  VAL*     1.3    54.9    +      -       -      +
    246P  ALA*     2.7    48.5    +      -       +      +
    247P  PRO*     2.7     7.9    -      -       -      -
    249P  LEU*     4.3    15.9    -      -       +      -
    250P  LEU*     3.8    38.1    -      -       +      -
   3008P  JZR      6.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 243 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77P  TRP*     5.0     4.3    -      -       +      -
     78P  ILE*     4.0    28.3    -      -       +      -
     81P  TYR*     3.5    37.6    -      -       +      +
     82P  MET*     3.8    19.3    -      -       +      -
     85P  ASN*     4.1     7.6    -      -       +      +
    239P  LEU*     2.9    33.1    +      -       +      +
    240P  MET*     4.0    12.6    -      -       +      +
    242P  LEU*     1.3    73.8    -      -       -      +
    244P  LEU*     1.3    64.3    +      -       +      +
    247P  PRO*     3.5    18.3    -      -       -      +
    201Q  ARG*     3.8     6.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 244 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77P  TRP*     4.3     1.8    -      -       +      -
     78P  ILE*     4.2    11.0    -      -       +      -
    240P  MET*     2.9    38.8    +      -       +      +
    243P  VAL*     1.3    79.3    -      -       +      +
    245P  PHE*     1.3    60.4    +      -       +      +
    201Q  ARG*     2.7    63.8    +      -       +      +
    202Q  LYS      4.2     0.2    +      -       -      -
    204Q  MET*     3.9    25.4    -      -       +      +
    205Q  GLY*     3.5    28.7    -      -       -      +
    208Q  MET*     3.9    18.8    -      -       +      -
   3006Q  PEE      4.4     4.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 245 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241P  LEU*     3.0    33.2    +      -       +      +
    244P  LEU*     1.3    85.5    -      -       -      +
    246P  ALA*     1.3    64.7    +      -       +      +
     17Q  LEU*     3.3    62.4    -      -       +      +
     18Q  LEU*     3.7    13.7    -      -       +      -
    201Q  ARG*     3.6    14.9    +      -       -      +
    202Q  LYS*     4.3     7.5    -      -       +      -
    205Q  GLY*     3.5    39.5    -      -       -      -
    208Q  MET*     4.2     7.0    -      -       +      -
    209Q  LEU*     3.8    30.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 246 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85P  ASN*     4.6     1.0    -      -       -      +
    241P  LEU      3.5     3.9    +      -       -      +
    242P  LEU*     2.7    22.0    +      -       +      +
    245P  PHE*     1.3    82.6    -      -       +      +
    247P  PRO*     1.3    68.0    -      -       -      +
    248P  ASP      3.2     4.2    +      -       -      +
    249P  LEU*     3.2    36.4    +      -       +      +
    201Q  ARG*     5.5     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