Contacts of the helix formed by residues 313 - 339 (chain R) in PDB entry 6DDE


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 313 (chain R).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311R  THR*     3.1     4.0    -      -       -      -
    312R  THR*     1.3    81.2    -      -       +      +
    314R  GLN*     1.3    64.2    +      -       -      +
    315R  THR      3.6     1.3    -      -       -      -
    316R  VAL*     3.3    22.9    -      -       +      +
    317R  SER*     3.7     8.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 314 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299R  TYR*     2.3    38.7    +      -       +      +
    308R  ILE*     3.3    26.4    -      -       -      +
    309R  PRO      2.9    23.2    -      -       -      +
    310R  GLU*     3.4    14.1    +      -       -      +
    311R  THR*     2.9    27.6    +      -       -      +
    313R  PHE*     1.3    78.7    -      -       -      +
    315R  THR*     1.3    61.9    +      -       -      +
    317R  SER*     3.2     7.7    +      -       -      -
    318R  TRP*     2.9    27.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 315 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128R  TYR*     3.5    22.6    -      -       +      +
    310R  GLU*     3.6    23.3    -      -       -      +
    311R  THR      4.8     3.4    -      -       -      +
    312R  THR*     5.3     6.1    -      -       -      +
    314R  GLN*     1.3    78.5    -      -       -      +
    316R  VAL*     1.3    63.5    +      -       -      +
    318R  TRP*     3.7    16.2    -      -       -      +
    319R  HIS*     2.9    49.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 316 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67R  THR*     5.2     9.4    -      -       -      +
     71R  ILE*     3.8    28.7    -      -       +      -
    128R  TYR*     3.4    17.7    -      -       -      +
    312R  THR      4.9     3.8    -      -       -      +
    313R  PHE*     3.3    24.2    -      -       +      +
    315R  THR*     1.3    80.9    -      -       -      +
    317R  SER*     1.3    62.0    +      -       -      +
    319R  HIS*     3.4     4.3    +      -       +      +
    320R  PHE*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 317 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313R  PHE      4.0     8.5    -      -       -      -
    314R  GLN*     3.2     9.7    +      -       -      -
    316R  VAL*     1.3    82.5    -      -       -      +
    318R  TRP*     1.3    57.5    +      -       -      +
    320R  PHE*     3.3    13.8    +      -       -      +
    321R  CYS*     2.9    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 318 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2D  DAL      3.2    37.8    -      -       +      +
      4D  MEA      6.3     0.7    -      -       -      -
      5D  ETA      3.4    24.7    -      -       -      -
    296R  ILE*     4.4    14.1    -      -       +      +
    299R  TYR*     3.3    48.6    -      +       +      +
    300R  VAL*     5.6     3.2    -      -       +      +
    303R  LYS*     3.7    18.2    -      -       +      -
    314R  GLN*     2.9    18.5    +      -       +      +
    315R  THR*     3.9    18.6    -      -       -      +
    316R  VAL      3.3     0.4    -      -       -      -
    317R  SER*     1.3    75.0    -      -       -      +
    319R  HIS*     1.3    72.6    +      +       -      +
    321R  CYS*     3.0    15.4    +      -       +      -
    322R  ILE*     2.9    27.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 319 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2D  DAL      5.6     0.7    -      -       -      -
      3D  GLY*     5.7     4.3    -      -       -      -
      4D  MEA      5.8     4.7    -      -       -      -
     71R  ILE*     6.5     0.9    -      -       +      -
     75R  TYR*     3.7    30.1    -      +       +      -
    124R  GLN*     5.1     9.4    -      -       +      -
    125R  SER*     6.3     0.4    -      -       -      -
    127R  ASN*     5.1     4.3    +      -       +      -
    128R  TYR*     3.4    39.6    -      +       +      +
    315R  THR*     2.9    41.2    +      -       -      +
    316R  VAL*     4.0     5.4    -      -       +      +
    318R  TRP*     1.3    86.8    -      +       -      +
    320R  PHE*     1.3    60.2    +      -       -      +
    322R  ILE*     3.3    26.7    +      -       +      +
    323R  ALA*     2.9    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 320 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74R  LEU*     6.2     3.8    -      -       +      -
    316R  VAL      2.9    15.3    +      -       -      +
    317R  SER*     3.4    15.9    -      -       -      +
    319R  HIS*     1.3    76.4    -      -       -      +
    321R  CYS*     1.3    58.5    +      -       -      +
    323R  ALA*     3.3    12.6    -      -       +      +
    324R  LEU*     2.9    52.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 321 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295R  PRO*     4.8    20.2    -      -       +      +
    296R  ILE*     3.9    12.3    -      -       +      +
    299R  TYR*     5.8     1.3    -      -       +      -
    317R  SER      2.9    13.7    +      -       -      +
    318R  TRP*     3.0    26.2    +      -       +      +
    320R  PHE*     1.3    74.6    -      -       -      +
    322R  ILE*     1.3    57.3    +      -       -      +
    324R  LEU*     3.5    16.3    +      -       +      +
    325R  GLY*     2.9    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 322 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1D  TYR      3.4    18.8    -      -       -      +
      2D  DAL      3.5    26.0    -      -       -      +
      3D  GLY*     4.1     4.0    -      -       -      +
     75R  TYR*     3.7    22.2    -      -       +      +
    124R  GLN*     6.0     0.9    -      -       +      -
    296R  ILE*     3.7    20.9    -      -       +      -
    318R  TRP*     2.9    20.9    +      -       +      +
    319R  HIS*     3.5    37.7    -      -       +      +
    321R  CYS*     1.3    76.3    -      -       -      +
    323R  ALA*     1.3    57.0    +      -       -      +
    325R  GLY*     3.1     2.0    +      -       -      +
    326R  TYR*     3.0    41.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 323 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74R  LEU      4.9     6.3    -      -       -      +
     75R  TYR*     4.7    14.1    -      -       +      +
     78R  VAL*     4.1    25.4    -      -       +      +
    121R  LEU*     5.6     2.9    -      -       -      -
    319R  HIS      2.9    13.7    +      -       -      +
    320R  PHE*     3.1    22.6    +      -       +      +
    322R  ILE*     1.3    75.9    -      -       -      +
    324R  LEU*     1.3    59.1    +      -       -      +
    326R  TYR*     3.3     7.1    +      -       -      +
    327R  THR*     2.9    25.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 324 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291R  VAL      4.0     6.7    -      -       -      +
    292R  CYS*     2.9    57.4    -      -       -      +
    295R  PRO*     3.7    28.0    -      -       +      -
    296R  ILE      5.1     0.4    -      -       -      +
    320R  PHE*     2.9    48.5    +      -       +      +
    321R  CYS*     3.6    13.7    -      -       -      +
    323R  ALA*     1.3    72.9    -      -       -      +
    325R  GLY*     1.3    65.5    +      -       -      +
    327R  THR*     3.7    15.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 325 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292R  CYS      3.8     2.9    -      -       -      -
    293R  TRP*     2.6    44.2    +      -       -      -
    296R  ILE*     4.3     9.6    -      -       -      -
    321R  CYS      2.9    15.7    +      -       -      -
    322R  ILE      3.1     4.9    +      -       -      -
    324R  LEU*     1.3    79.2    -      -       -      +
    326R  TYR*     1.3    62.2    +      -       -      +
    327R  THR      3.3     0.9    +      -       -      -
    328R  ASN*     3.5     6.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 326 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1D  TYR*     2.4    31.4    +      -       +      -
     78R  VAL*     4.6     4.0    -      -       +      +
    117R  ALA*     3.5    36.8    -      -       +      -
    118R  THR*     5.2     3.5    -      -       -      -
    120R  THR*     5.4     0.7    -      -       -      -
    121R  LEU*     3.6    40.2    -      -       +      -
    124R  GLN*     4.2     9.1    +      -       -      -
    147R  ASP*     2.3    32.3    +      -       -      -
    151R  MET*     6.2     2.6    -      -       +      +
    293R  TRP*     5.7     3.8    -      +       -      -
    322R  ILE*     3.0    36.5    +      -       +      +
    323R  ALA      3.6     3.4    -      -       -      +
    325R  GLY*     1.3    72.4    -      -       -      +
    327R  THR*     1.3    59.3    +      -       -      +
    328R  ASN      3.2     2.0    -      -       -      -
    329R  SER*     3.1    18.6    +      -       -      +
    330R  CYS*     3.0    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 327 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78R  VAL*     4.5     7.4    -      -       -      -
    288R  VAL*     6.0     0.9    -      -       -      +
    292R  CYS*     4.8     2.9    -      -       -      -
    323R  ALA      2.9    16.4    +      -       -      -
    324R  LEU*     3.7    16.8    -      -       -      -
    325R  GLY      3.2     1.2    -      -       -      -
    326R  TYR*     1.3    74.5    -      -       -      +
    328R  ASN*     1.3    59.7    +      -       -      +
    330R  CYS*     3.5     9.3    -      -       -      +
    331R  LEU*     2.9    41.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 328 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154R  SER*     5.9     0.7    -      -       -      -
    158R  LEU*     4.4     2.6    -      -       -      +
    288R  VAL*     5.0    11.0    -      -       -      +
    289R  PHE*     3.3    38.5    -      -       -      +
    292R  CYS*     3.7    25.0    -      -       +      +
    293R  TRP*     3.3    30.6    -      -       +      -
    325R  GLY      3.5    11.2    +      -       -      +
    326R  TYR      3.2     0.4    -      -       -      -
    327R  THR*     1.3    77.2    -      -       -      +
    329R  SER*     1.3    57.6    +      -       -      +
    331R  LEU*     5.4     1.3    -      -       -      +
    332R  ASN*     2.9    54.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 329 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82R  GLY*     5.6     0.2    -      -       -      -
     86R  ASN*     3.5     6.8    -      -       -      +
    114R  ASP*     3.1    62.4    +      -       -      +
    117R  ALA*     4.1     7.4    -      -       -      +
    118R  THR*     4.2     6.7    +      -       -      -
    154R  SER*     5.4     0.7    -      -       -      -
    293R  TRP*     5.1     7.4    -      -       -      -
    325R  GLY      4.4     0.4    +      -       -      -
    326R  TYR*     3.1    27.6    +      -       -      +
    328R  ASN*     1.3    80.0    -      -       -      +
    330R  CYS*     1.3    62.1    +      -       -      +
    333R  PRO*     3.8     2.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 330 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78R  VAL*     4.3    10.5    -      -       +      +
     81R  VAL*     3.6    33.0    -      -       -      -
     82R  GLY*     3.7    25.2    -      -       -      +
     85R  GLY*     5.9     1.0    -      -       -      -
     86R  ASN*     4.9     2.4    +      -       -      +
    118R  THR*     5.8     0.8    -      -       -      -
    326R  TYR      3.0    12.4    +      -       -      +
    327R  THR*     3.5    11.7    -      -       -      +
    328R  ASN      3.2     0.2    -      -       -      -
    329R  SER*     1.3    81.2    -      -       -      +
    331R  LEU*     1.3    76.3    +      -       +      +
    332R  ASN      3.2     5.2    +      -       -      -
    333R  PRO*     3.5     6.2    -      -       -      +
    334R  VAL*     3.5    19.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 331 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288R  VAL*     5.1    20.0    -      -       +      +
    327R  THR*     2.9    30.4    +      -       -      +
    328R  ASN*     3.8     0.9    -      -       -      -
    330R  CYS*     1.3    90.2    -      -       +      +
    332R  ASN*     1.3    59.2    +      -       -      +
    333R  PRO      3.7     0.4    -      -       -      -
    334R  VAL*     3.7    19.2    -      -       +      +
    335R  LEU*     2.9    30.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 332 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110R  LEU*     3.4    28.0    -      -       -      +
    114R  ASP*     3.8     5.9    +      -       -      +
    154R  SER*     4.6     2.4    +      -       -      -
    158R  LEU*     3.4    29.3    -      -       -      +
    285R  VAL*     4.8     5.6    -      -       -      +
    288R  VAL*     6.4     1.6    -      -       -      -
    328R  ASN*     2.9    30.2    +      -       -      +
    330R  CYS      3.2     1.8    -      -       -      -
    331R  LEU*     1.3    75.4    -      -       -      +
    333R  PRO*     1.4    66.7    -      -       +      +
    335R  LEU*     3.3     6.6    +      -       -      +
    336R  TYR*     3.0    48.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 333 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85R  GLY      5.1     1.8    -      -       -      +
     86R  ASN*     3.3    24.9    -      -       -      +
     89R  VAL*     3.7    31.7    -      -       +      +
    107R  ILE*     6.0     1.1    -      -       +      +
    110R  LEU*     4.8     5.8    -      -       +      +
    111R  ALA*     4.5     8.3    -      -       +      +
    114R  ASP*     3.8    11.9    -      -       -      +
    329R  SER      3.8     4.5    -      -       -      +
    330R  CYS      3.5    12.6    -      -       -      +
    332R  ASN*     1.4    89.7    -      -       +      +
    334R  VAL*     1.3    60.0    +      -       +      +
    335R  LEU      3.2     0.2    -      -       -      -
    336R  TYR*     3.7     8.5    -      -       +      +
    337R  ALA*     2.9    31.9    +      -       +      +
    338R  PHE*     3.9     2.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 334 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81R  VAL      5.8     0.9    -      -       -      +
     85R  GLY*     5.1    14.4    -      -       -      -
     89R  VAL*     6.2     0.2    -      -       +      -
    330R  CYS*     3.5    24.0    -      -       -      +
    331R  LEU*     3.7    22.2    -      -       +      +
    332R  ASN      3.2     0.4    -      -       -      -
    333R  PRO*     1.3    80.2    -      -       +      +
    335R  LEU*     1.3    60.3    +      -       -      +
    338R  PHE*     3.3    44.4    -      -       +      +
    339R  LEU*     4.5     2.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 335 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281R  MET*     4.1    11.3    -      -       +      +
    284R  VAL*     3.8    23.6    -      -       +      -
    285R  VAL*     3.7    41.1    -      -       +      -
    288R  VAL*     3.8    17.9    -      -       +      -
    331R  LEU      2.9    18.6    +      -       -      +
    332R  ASN*     3.7     6.1    -      -       -      +
    333R  PRO      3.2     0.2    -      -       -      -
    334R  VAL*     1.3    78.7    -      -       -      +
    336R  TYR*     1.3    65.4    +      -       +      +
    339R  LEU*     3.4    47.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 336 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107R  ILE*     5.5    12.6    -      -       +      -
    110R  LEU*     3.6    25.8    -      -       +      -
    158R  LEU*     3.3    16.8    +      -       +      +
    161R  MET*     3.5    33.5    -      -       +      +
    165R  ARG*     4.2    18.1    +      -       -      +
    252R  TYR*     4.4    12.0    +      -       -      -
    281R  MET*     4.3    14.8    -      -       +      -
    285R  VAL*     3.3    35.1    -      -       +      +
    332R  ASN*     3.0    28.7    +      -       -      +
    333R  PRO*     4.4     3.4    -      -       +      +
    335R  LEU*     1.3    84.4    -      -       +      +
    337R  ALA*     1.3    62.8    +      -       +      +
    338R  PHE      3.2     1.6    +      -       -      -
    339R  LEU      3.4     6.2    +      -       -      -
    340R  ASP*     2.7    32.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 337 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89R  VAL*     3.8    31.6    -      -       +      -
     92R  VAL*     5.5     6.1    -      -       +      -
    107R  ILE*     4.8    12.8    -      -       +      -
    333R  PRO*     2.9    18.9    +      -       +      +
    336R  TYR*     1.3    74.7    -      -       -      +
    338R  PHE*     1.3    61.5    +      -       +      +
    340R  ASP*     4.2     8.4    +      -       -      +
    343R  PHE*     3.6    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 338 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85R  GLY*     5.6     3.1    -      -       -      -
     88R  LEU*     5.0    19.5    -      -       +      -
     89R  VAL*     4.6    14.6    -      -       +      -
    333R  PRO      3.9     4.0    -      -       -      -
    334R  VAL*     3.3    49.9    +      -       +      +
    336R  TYR      3.2     0.6    -      -       -      -
    337R  ALA*     1.3    80.1    -      -       -      +
    339R  LEU*     1.3    65.2    +      -       +      +
    340R  ASP      3.2    13.1    +      -       -      +
    343R  PHE*     4.5    11.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 339 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  GLY      4.7     0.5    -      -       -      +
    277R  ARG*     3.9    17.2    +      -       -      +
    281R  MET*     3.4    26.3    -      -       +      +
    334R  VAL      4.9     1.8    -      -       -      +
    335R  LEU*     3.4    41.8    +      -       +      +
    336R  TYR      3.4     3.5    +      -       -      -
    338R  PHE*     1.3    83.3    -      -       +      +
    340R  ASP*     1.3    70.3    +      -       -      +
----------------------------------------------------------
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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