Contacts of the helix formed by residues 261 - 292 (chain R) in PDB entry 6XOX


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with SER 261 (chain R).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  GLN*     4.3    15.9    +      -       -      +
    260R  PHE*     1.3    77.2    -      -       -      +
    262R  GLU*     1.3    64.1    +      -       -      +
    263R  GLN*     3.4    13.2    +      -       -      +
    264R  TRP*     3.5    23.1    +      -       -      +
    265R  ILE*     3.2    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 262 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  LYS*     5.2     6.8    -      -       -      +
     35A  GLN*     5.8     3.1    -      -       +      +
     38A  ARG*     4.2    28.8    +      -       -      +
    175R  THR*     4.4    26.6    +      -       +      +
    250R  TYR*     6.0     1.6    -      -       +      +
    260R  PHE*     3.6    29.6    +      -       +      +
    261R  SER*     1.3    73.6    +      -       -      +
    263R  GLN*     1.3    57.7    +      -       -      +
    265R  ILE*     4.6     0.4    -      -       -      +
    266R  PHE*     2.9    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 263 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  GLN*     4.2    27.9    +      -       +      +
     35A  GLN*     3.4    30.2    -      -       +      +
    261R  SER*     3.4     1.8    +      -       -      +
    262R  GLU*     1.3    77.3    -      -       -      +
    264R  TRP*     1.3    67.3    +      -       -      +
    266R  PHE*     3.2    10.0    +      -       -      +
    267R  ARG*     3.0    75.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 264 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261R  SER*     3.5    18.5    +      -       -      +
    263R  GLN*     1.3    80.4    -      -       -      +
    265R  ILE*     1.3    86.7    +      -       +      +
    267R  ARG*     3.3    10.5    +      -       +      +
    268R  LEU*     2.9    56.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 265 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250R  TYR*     5.9     1.3    -      -       +      -
    253R  THR*     5.0     8.1    -      -       +      +
    257R  PHE*     6.4     1.1    -      -       +      -
    260R  PHE*     3.7    27.1    -      -       +      -
    261R  SER      3.2    27.5    +      -       -      +
    262R  GLU      4.6     0.4    -      -       -      +
    263R  GLN      3.3     0.2    -      -       -      -
    264R  TRP*     1.3    99.0    -      -       +      +
    266R  PHE*     1.3    60.0    +      -       -      +
    268R  LEU*     3.9     9.4    -      -       +      -
    269R  TYR*     2.9    64.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 266 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175R  THR*     3.7    26.9    -      -       +      +
    178R  TYR*     3.7    40.6    -      +       +      -
    179R  ILE*     3.6    27.6    -      -       +      -
    182R  ASN*     4.9     4.3    -      -       -      -
    250R  TYR*     5.9     0.9    -      +       -      -
    262R  GLU      2.9    21.3    +      -       -      +
    263R  GLN*     3.2    10.3    +      -       -      +
    265R  ILE*     1.3    75.2    -      -       -      +
    267R  ARG*     1.3    77.6    +      -       -      +
    269R  TYR*     3.2     4.2    +      -       -      -
    270R  VAL*     3.0    45.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 267 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263R  GLN*     3.0    56.6    +      -       -      +
    264R  TRP*     3.7    14.6    -      -       +      +
    266R  PHE*     1.3    84.8    -      -       +      +
    268R  LEU*     1.3    62.8    +      -       -      +
    270R  VAL*     3.4     6.8    +      -       -      +
    271R  SER*     3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 268 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264R  TRP*     2.9    56.0    +      -       +      +
    265R  ILE*     3.7    11.2    -      -       +      +
    266R  PHE      3.2     0.2    -      -       -      -
    267R  ARG*     1.3    76.4    -      -       -      +
    269R  TYR*     1.3    67.6    +      -       +      +
    271R  SER*     3.2    10.0    +      -       -      -
    272R  ILE*     2.9    48.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 269 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179R  ILE*     4.1     9.9    -      -       +      -
    243R  TRP*     3.9     1.2    -      -       -      -
    246R  VAL*     3.6    27.3    -      -       +      +
    249R  VAL*     3.5    28.2    +      -       +      +
    250R  TYR*     3.6    48.2    -      +       +      -
    253R  THR*     3.4    22.4    -      -       +      +
    265R  ILE*     2.9    42.0    +      -       +      +
    266R  PHE*     3.2     4.7    +      -       -      +
    268R  LEU*     1.3    86.9    -      -       +      +
    270R  VAL*     1.3    59.7    +      -       -      +
    272R  ILE*     4.3    10.3    -      -       +      +
    273R  GLY*     2.9    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 270 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179R  ILE*     5.1     0.2    -      -       +      -
    182R  ASN*     4.0    14.8    -      -       -      +
    243R  TRP*     3.9     8.5    -      -       +      -
    266R  PHE*     3.0    47.5    +      -       +      +
    267R  ARG*     3.4     7.2    +      -       -      +
    269R  TYR*     1.3    75.4    -      -       -      +
    271R  SER*     1.3    58.7    +      -       -      +
    273R  GLY      3.3     0.3    +      -       -      -
    274R  TRP*     3.0    48.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 271 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267R  ARG      3.0    14.9    +      -       -      -
    268R  LEU*     3.5    14.8    -      -       -      -
    270R  VAL*     1.3    75.2    -      -       -      +
    272R  ILE*     1.3    61.9    +      -       -      +
    275R  GLY*     2.9    30.0    +      -       -      +
    276R  VAL*     3.4     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 272 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242R  TYR*     4.0     8.6    -      -       +      +
    245R  LEU*     4.5    16.6    -      -       +      -
    246R  VAL*     3.7    17.0    -      -       +      -
    249R  VAL*     5.8     2.0    -      -       +      -
    268R  LEU*     2.9    37.3    +      -       +      +
    269R  TYR*     3.4    12.1    +      -       +      +
    271R  SER*     1.3    75.2    -      -       -      +
    273R  GLY*     1.3    63.6    +      -       -      +
    276R  VAL*     3.5    38.8    -      -       +      +
    277R  PRO*     3.5     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 273 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239R  ALA*     4.2     1.9    -      -       -      +
    242R  TYR*     4.1     5.0    -      -       -      +
    243R  TRP*     3.2    40.2    +      -       -      -
    246R  VAL*     3.6    11.9    -      -       -      +
    269R  TYR      2.9    13.9    +      -       -      -
    271R  SER      3.2     0.4    -      -       -      -
    272R  ILE*     1.3    77.6    -      -       -      +
    274R  TRP*     1.3    56.1    +      -       -      +
    277R  PRO*     3.3    20.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 274 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182R  ASN*     4.0    27.8    -      -       +      +
    185R  ALA*     4.7     7.2    -      -       +      -
    186R  SER*     4.0    22.9    -      -       -      -
    189R  LEU*     4.1    23.6    -      -       +      -
    235R  TYR*     2.8    46.0    +      +       -      +
    239R  ALA*     3.9    21.8    -      -       +      -
    243R  TRP*     3.2    38.7    -      +       -      -
    270R  VAL*     3.0    28.8    +      -       +      +
    273R  GLY*     1.3    78.9    -      -       -      +
    275R  GLY*     1.3    64.3    +      -       -      +
    276R  VAL      3.5     0.7    -      -       -      -
    277R  PRO*     3.3     9.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 275 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271R  SER*     2.9    16.4    +      -       -      +
    274R  TRP*     1.3    73.8    -      -       -      +
    276R  VAL*     1.3    55.0    +      -       -      +
    278R  LEU*     3.0    14.0    +      -       -      +
    279R  LEU*     2.7    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 276 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242R  TYR*     3.5    20.9    -      -       +      +
    271R  SER      3.4     3.3    +      -       -      +
    272R  ILE*     3.5    48.5    -      -       +      +
    275R  GLY*     1.3    72.5    -      -       -      +
    277R  PRO*     1.4    65.8    -      -       +      +
    279R  LEU*     3.0    31.1    +      -       +      +
    280R  PHE*     3.1    21.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 277 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235R  TYR*     4.0    10.5    -      -       +      -
    238R  ALA*     3.6    38.4    -      -       +      +
    239R  ALA*     3.8     5.8    -      -       -      +
    242R  TYR*     3.5    13.4    -      -       +      -
    272R  ILE      3.5     8.5    -      -       -      +
    273R  GLY      3.3    22.9    -      -       -      +
    274R  TRP      3.3    12.6    -      -       -      +
    276R  VAL*     1.4    85.3    -      -       -      +
    278R  LEU*     1.3    56.2    +      -       -      +
    280R  PHE*     3.4    13.2    +      -       +      -
    281R  VAL*     2.8    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 278 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231R  LEU*     5.6     2.5    -      -       +      -
    235R  TYR*     3.4    35.1    -      -       +      +
    274R  TRP      3.5     3.5    +      -       -      +
    275R  GLY*     3.0    15.1    +      -       -      +
    277R  PRO*     1.3    77.2    -      -       -      +
    279R  LEU*     1.3    60.7    +      -       -      +
    281R  VAL*     4.3     2.5    -      -       +      +
    282R  VAL*     3.0    62.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 279 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275R  GLY      2.7    17.4    +      -       -      +
    276R  VAL*     3.0    30.0    +      -       +      +
    278R  LEU*     1.3    72.5    -      -       -      +
    280R  PHE*     1.3    57.5    +      -       -      +
    282R  VAL*     5.0     2.2    -      -       -      -
    283R  PRO*     3.3    18.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 280 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238R  ALA*     3.7    24.9    -      -       +      -
    242R  TYR*     3.5    33.9    -      +       -      -
    276R  VAL*     3.1    27.5    +      -       +      -
    277R  PRO*     3.6    11.0    -      -       +      -
    279R  LEU*     1.3    77.0    -      -       -      +
    281R  VAL*     1.3    64.2    +      -       +      +
    283R  PRO*     3.5     7.3    -      -       -      +
    284R  TRP*     3.6    17.0    +      -       -      +
    308R  ILE*     4.4     6.0    -      -       -      +
    309R  ILE*     3.6    31.9    -      -       +      +
    312R  PRO*     3.6    36.8    -      -       +      -
    313R  ILE*     4.5     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 281 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231R  LEU*     3.7    39.8    -      -       +      +
    234R  GLN*     4.0    13.2    -      -       +      +
    235R  TYR*     4.2    11.4    -      -       +      +
    238R  ALA*     4.0    20.2    -      -       +      -
    277R  PRO      2.8    21.7    +      -       -      +
    278R  LEU*     3.1     4.0    +      -       +      +
    280R  PHE*     1.3    78.7    -      -       +      +
    282R  VAL*     1.3    64.2    +      -       +      +
    284R  TRP*     3.0     6.8    +      -       +      +
    285R  GLY*     2.8    24.4    +      -       -      -
    309R  ILE*     3.7    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 282 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231R  LEU*     4.1    18.4    -      -       +      -
    278R  LEU*     3.0    45.2    +      -       +      +
    279R  LEU*     5.0     1.8    -      -       -      -
    281R  VAL*     1.3    77.2    -      -       -      +
    283R  PRO*     1.4    63.3    -      -       +      +
    285R  GLY*     4.2     2.9    -      -       -      +
    286R  ILE*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 283 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279R  LEU      3.3    27.4    -      -       -      +
    280R  PHE*     3.5    11.9    -      -       -      +
    282R  VAL*     1.4    91.7    -      -       +      +
    284R  TRP*     1.3    59.1    +      -       -      +
    286R  ILE*     3.3    13.8    -      -       +      +
    287R  VAL*     2.9    31.7    +      -       -      +
    308R  ILE*     5.1     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 284 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230R  PHE*     3.4    36.6    -      +       -      -
    231R  LEU*     3.9    22.2    -      -       +      -
    234R  GLN*     4.1    16.4    -      -       +      -
    280R  PHE      3.6    13.4    +      -       -      +
    281R  VAL*     3.0    11.0    +      -       +      +
    283R  PRO*     1.3    77.8    -      -       -      +
    285R  GLY*     1.3    71.8    +      -       -      +
    287R  VAL*     3.3     9.5    -      -       +      +
    288R  LYS*     2.9    55.8    +      -       +      +
    297R  TRP*     4.4    10.5    -      +       +      -
    305R  TYR*     2.8    34.1    +      -       -      +
    306R  TRP*     4.4    15.7    -      +       -      +
    308R  ILE*     3.5    21.2    -      -       +      +
    309R  ILE*     3.9    27.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 285 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231R  LEU*     3.7    24.7    -      -       -      -
    281R  VAL      2.8    14.9    +      -       -      -
    282R  VAL*     3.4     3.1    +      -       -      -
    284R  TRP*     1.3    78.6    -      -       -      +
    286R  ILE*     1.3    58.4    +      -       -      +
    288R  LYS*     3.5     1.6    +      -       -      +
    289R  TYR*     2.9    27.4    +      -       -      +
    297R  TRP*     3.6    17.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 286 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282R  VAL*     3.0    24.2    +      -       +      +
    283R  PRO*     3.3    16.4    -      -       +      +
    285R  GLY*     1.3    78.4    -      -       -      +
    287R  VAL*     1.3    65.6    +      -       +      +
    289R  TYR*     3.1    11.5    +      -       +      +
    290R  LEU*     2.9    45.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 287 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283R  PRO      2.9    18.0    +      -       -      +
    284R  TRP*     3.3    17.9    -      -       +      +
    286R  ILE*     1.3    85.2    -      -       +      +
    288R  LYS*     1.3    60.8    +      -       -      +
    290R  LEU*     4.4     4.0    -      -       +      +
    291R  TYR*     3.0    55.7    +      -       +      +
    305R  TYR*     3.6    21.3    -      -       +      -
    308R  ILE*     3.8    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 288 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284R  TRP*     2.9    49.4    +      -       +      +
    285R  GLY*     3.9     4.3    -      -       -      +
    287R  VAL*     1.3    77.1    -      -       +      +
    289R  TYR*     1.3    62.7    +      -       -      +
    292R  GLU*     2.9    75.5    +      -       +      +
    293R  ASP*     3.6     1.2    +      -       -      -
    297R  TRP*     3.5    41.2    +      -       +      +
    300R  ASN*     3.5    29.1    -      -       -      +
    305R  TYR*     3.8    18.0    -      -       +      +
    306R  TRP*     4.9     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 289 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224R  LEU*     4.3    24.3    -      -       +      +
    227R  ARG*     3.8    16.6    -      -       -      -
    285R  GLY      2.9    19.5    +      -       -      +
    286R  ILE*     3.1    13.0    +      -       +      +
    288R  LYS*     1.3    77.5    -      -       -      +
    290R  LEU*     1.3    76.8    +      -       +      +
    293R  ASP*     3.1    31.1    -      -       -      +
    297R  TRP*     3.5    25.5    -      +       +      +
----------------------------------------------------------
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Residues in contact with LEU 290 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286R  ILE*     2.9    34.3    +      -       +      +
    287R  VAL*     3.4     4.9    +      -       +      +
    288R  LYS      3.3     0.2    -      -       -      -
    289R  TYR*     1.3    95.5    -      -       +      +
    291R  TYR*     1.3    94.8    +      -       +      +
    293R  ASP*     5.2     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 291 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287R  VAL*     3.0    35.6    +      -       +      +
    290R  LEU*     1.3   106.8    -      -       +      +
    292R  GLU*     1.3    65.5    +      -       -      +
    293R  ASP      3.8     1.9    +      -       -      -
    305R  TYR*     3.3    31.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 292 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287R  VAL      4.2     0.6    +      -       -      -
    288R  LYS*     2.9    57.7    +      -       +      +
    291R  TYR*     1.3    83.4    -      -       +      +
    293R  ASP*     1.3    62.8    +      -       -      +
    294R  GLU*     3.4    13.5    +      -       +      +
    297R  TRP*     4.0     0.5    -      -       -      -
    299R  ARG*     5.6     2.9    -      -       +      +
    300R  ASN*     3.7    12.3    +      -       -      -
    301R  SER*     3.0    25.3    +      -       -      +
    302R  ASN*     3.1    23.2    +      -       -      +
    305R  TYR*     3.8    19.1    -      -       +      -
----------------------------------------------------------
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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