Contacts of the helix formed by residues 309 - 336 (chain A) in PDB entry 4WLE


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 309 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  SER*     4.1    10.1    +      -       -      -
    308A  VAL*     1.3    75.5    -      -       -      +
    310A  SER*     1.3    59.2    +      -       -      +
    311A  PHE*     3.5     9.5    +      -       -      +
    312A  GLU*     2.9    40.8    +      -       -      +
    313A  GLU*     2.8    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  SER*     1.3    71.6    -      -       -      +
    311A  PHE*     1.3    60.2    +      -       -      +
    313A  GLU*     3.4     7.3    +      -       -      +
    314A  LYS*     3.0    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223A  LEU*     4.6    23.8    -      -       +      -
    224A  THR*     4.7    20.6    -      -       +      -
    227A  THR*     4.0    23.6    -      -       +      -
    309A  SER*     3.3     8.6    +      -       -      +
    310A  SER*     1.3    77.7    -      -       -      +
    312A  GLU*     1.3    64.7    +      -       +      +
    314A  LYS*     3.6     7.0    +      -       +      +
    315A  MET*     3.2    52.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206A  ILE*     4.3     0.7    -      -       -      +
    207A  PRO      4.2     2.2    -      -       -      +
    208A  LEU*     3.8    26.0    -      -       +      +
    209A  ILE*     3.1    12.6    +      -       -      +
    210A  SER*     2.6    47.8    +      -       -      -
    308A  VAL*     3.4    11.1    -      -       +      +
    309A  SER*     2.9    30.2    +      -       -      +
    311A  PHE*     1.3    79.5    -      -       +      +
    313A  GLU*     1.3    63.2    +      -       -      +
    315A  MET*     3.2    24.6    +      -       +      +
    316A  ILE*     3.0    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 313 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  ILE*     5.8     0.2    -      -       -      +
    308A  VAL*     3.3    22.2    -      -       +      +
    309A  SER      2.8    16.3    +      -       -      +
    310A  SER*     3.4     9.6    +      -       -      +
    312A  GLU*     1.3    77.6    -      -       -      +
    314A  LYS*     1.3    62.0    +      -       -      +
    316A  ILE*     3.2    22.3    +      -       -      +
    317A  SER*     3.1    21.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 314 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  SER      3.0    17.0    +      -       -      +
    311A  PHE*     3.7     9.4    -      -       +      +
    313A  GLU*     1.3    72.5    -      -       -      +
    315A  MET*     1.3    60.4    +      -       +      +
    317A  SER*     3.3    12.0    +      -       -      -
    318A  ASP*     2.8    66.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203A  LYS      4.4     3.8    -      -       -      +
    206A  ILE*     3.7    27.0    -      -       +      +
    207A  PRO*     4.1     9.4    -      -       +      +
    227A  THR*     3.7    27.4    -      -       +      +
    231A  GLN*     3.8    18.2    -      -       -      +
    311A  PHE*     3.2    38.5    +      -       +      +
    312A  GLU*     3.2    32.8    +      -       +      +
    314A  LYS*     1.3    76.0    -      -       +      +
    316A  ILE*     1.3    63.4    +      -       -      +
    318A  ASP*     3.4    10.6    +      -       -      +
    319A  ALA*     3.1    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 316 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197A  ILE*     3.9    24.2    -      -       +      -
    206A  ILE*     3.7    20.9    -      -       +      -
    208A  LEU*     5.3     0.2    -      -       +      -
    283A  THR*     4.7     8.5    -      -       +      -
    288A  PHE*     4.5    16.6    -      -       +      -
    305A  ILE*     3.9    21.3    -      -       +      -
    308A  VAL*     4.4     4.7    -      -       +      -
    312A  GLU      3.0    17.9    +      -       -      +
    313A  GLU*     3.2    30.0    +      -       -      +
    315A  MET*     1.3    76.8    -      -       -      +
    317A  SER*     1.3    60.5    +      -       -      +
    319A  ALA*     3.2     2.9    +      -       -      +
    320A  ILE*     3.2    38.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 317 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  GLU      3.1    12.5    +      -       -      -
    314A  LYS*     3.3    18.2    +      -       -      +
    316A  ILE*     1.3    78.4    -      -       -      +
    318A  ASP*     1.3    66.2    +      -       -      +
    320A  ILE*     3.7     9.9    +      -       -      +
    321A  PRO*     3.3    19.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 318 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203A  LYS*     3.8    33.3    +      -       +      +
    314A  LYS*     2.8    49.7    +      -       -      +
    315A  MET*     3.8     9.9    -      -       -      +
    316A  ILE      3.3     0.2    -      -       -      -
    317A  SER*     1.3    78.2    +      -       -      +
    319A  ALA*     1.3    61.2    +      -       -      +
    321A  PRO*     3.5    11.7    -      -       -      +
    322A  GLU*     4.6     3.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 319 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203A  LYS*     3.8     6.7    -      -       -      +
    204A  THR*     3.8    26.4    -      -       +      +
    206A  ILE*     3.8    18.6    -      -       +      -
    288A  PHE*     5.7     0.9    -      -       +      -
    315A  MET      3.1    16.8    +      -       -      +
    316A  ILE      3.2     5.3    +      -       -      +
    318A  ASP*     1.3    77.3    -      -       -      +
    320A  ILE*     1.3    65.6    +      -       +      +
    322A  GLU*     3.2     6.6    +      -       -      +
    323A  LEU*     3.0    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283A  THR*     4.8    13.2    -      -       +      +
    284A  GLU*     3.6    31.4    -      -       +      +
    285A  CYS*     4.0    19.3    -      -       -      -
    288A  PHE*     5.3     3.6    -      -       +      -
    316A  ILE*     3.2    34.0    +      -       +      +
    317A  SER*     4.0     7.6    -      -       -      +
    319A  ALA*     1.3    76.5    -      -       -      +
    321A  PRO*     1.3    72.1    -      -       +      +
    323A  LEU*     3.3     1.7    +      -       -      +
    324A  LYS*     2.9    42.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317A  SER      3.3    17.5    -      -       -      +
    318A  ASP*     3.5    12.3    -      -       -      +
    320A  ILE*     1.3    95.1    -      -       +      +
    322A  GLU*     1.3    60.8    +      -       -      +
    324A  LYS*     3.5     7.6    +      -       +      +
    325A  ALA*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  ASN*     5.0     0.6    +      -       -      +
    201A  ALA*     3.9    20.3    -      -       -      +
    202A  GLY*     5.6     0.2    -      -       -      -
    203A  LYS*     3.3    31.5    +      -       +      +
    204A  THR*     3.7    21.1    -      -       +      +
    318A  ASP      4.6     4.9    +      -       -      +
    319A  ALA      3.2     8.7    +      -       -      +
    321A  PRO*     1.3    76.7    -      -       -      +
    323A  LEU*     1.3    61.6    +      -       -      +
    325A  ALA*     3.2     8.0    +      -       +      +
    326A  SER*     2.9    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  ASN*     3.4    36.6    -      -       +      +
    198A  GLY*     4.2    10.1    -      -       -      +
    199A  GLY*     4.0     7.2    -      -       -      +
    204A  THR*     3.9    12.3    -      -       +      -
    277A  PHE*     4.1    11.0    -      -       +      -
    285A  CYS*     3.9    13.0    -      -       -      -
    287A  TYR      4.7     2.2    -      -       -      +
    288A  PHE*     3.7    37.0    -      -       +      -
    319A  ALA*     3.0    26.5    +      -       +      +
    320A  ILE      3.3     4.0    +      -       -      +
    322A  GLU*     1.3    75.9    -      -       -      +
    324A  LYS*     1.3    57.1    +      -       -      +
    326A  SER*     3.2     4.8    +      -       -      -
    327A  ILE*     2.8    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 324 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  GLU*     3.3    32.4    +      -       +      +
    285A  CYS*     4.0    19.3    -      -       -      -
    320A  ILE*     2.9    37.2    +      -       +      +
    321A  PRO*     3.8     6.7    -      -       +      +
    323A  LEU*     1.3    74.6    -      -       -      +
    325A  ALA*     1.3    57.2    +      -       -      +
    327A  ILE*     3.4     8.6    +      -       +      +
    328A  LYS*     3.0    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 325 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321A  PRO      3.1    14.5    +      -       -      +
    322A  GLU*     3.5    11.4    -      -       +      +
    323A  LEU      3.2     0.2    -      -       -      -
    324A  LYS*     1.3    76.5    -      -       -      +
    326A  SER*     1.3    62.4    +      -       -      +
    328A  LYS*     3.5     5.7    +      -       -      +
    329A  LYS*     3.1    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 326 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  ASP*     4.9     7.2    +      -       -      +
    143A  PRO*     6.1     0.7    -      -       -      +
    145A  ASN*     3.6    29.6    +      -       -      +
    146A  SER*     2.7    32.2    +      -       -      -
    322A  GLU*     2.9    23.5    +      -       -      +
    323A  LEU*     3.6     7.9    -      -       -      -
    325A  ALA*     1.3    76.5    -      -       -      +
    327A  ILE*     1.3    62.2    +      -       -      +
    329A  LYS*     3.4     6.4    +      -       -      +
    330A  GLY      3.3    11.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 327 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  ASN      3.8    15.0    -      -       -      +
    149A  PRO*     3.8     5.8    -      -       +      +
    277A  PHE*     4.6     3.6    -      -       +      -
    285A  CYS*     4.2     6.3    -      -       +      -
    286A  THR*     3.4    24.9    -      -       -      +
    287A  TYR*     3.7    52.0    -      -       +      +
    323A  LEU*     2.8    28.7    +      -       +      +
    324A  LYS*     3.8     7.4    -      -       -      +
    326A  SER*     1.3    74.1    -      -       -      +
    328A  LYS*     1.3    64.4    -      -       -      +
    330A  GLY*     3.3     2.8    +      -       -      -
    331A  GLU*     3.0    40.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 328 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324A  LYS      3.0    18.1    +      -       -      +
    325A  ALA*     3.9     5.8    -      -       -      +
    327A  ILE*     1.3    77.1    -      -       -      +
    329A  LYS*     1.3    54.0    +      -       -      +
    331A  GLU*     3.6    14.5    -      -       -      +
    332A  ASP*     2.7    67.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 329 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  ASP*     2.8    45.9    +      -       -      +
    114A  PHE*     3.5    38.6    -      -       +      +
    115A  ASN*     5.5     2.9    -      -       -      +
    146A  SER*     4.1     4.9    -      -       -      +
    325A  ALA      3.1    14.1    +      -       -      +
    326A  SER*     3.4    12.3    -      -       -      +
    328A  LYS*     1.3    76.1    -      -       -      +
    330A  GLY*     1.3    61.1    +      -       -      +
    332A  ASP*     3.9     6.7    -      -       -      +
    333A  PHE*     3.1    17.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  PHE*     4.0     8.2    -      -       -      -
    146A  SER*     3.6    23.7    -      -       -      -
    149A  PRO*     4.4     4.0    -      -       -      -
    150A  ILE*     3.5    23.8    -      -       -      +
    326A  SER      3.3     7.9    +      -       -      -
    327A  ILE      3.3     2.6    +      -       -      -
    329A  LYS*     1.3    76.5    -      -       -      +
    331A  GLU*     1.3    65.2    +      -       -      +
    333A  PHE*     3.4     7.8    +      -       -      +
    334A  VAL*     3.5    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 331 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  PRO*     4.3     9.4    -      -       +      +
    153A  GLU*     4.3    27.7    -      -       +      +
    286A  THR*     4.1     5.9    +      -       -      +
    287A  TYR*     4.1    11.0    +      -       +      -
    327A  ILE*     3.0    35.2    +      -       -      +
    328A  LYS*     3.6    18.1    -      -       +      +
    330A  GLY*     1.3    77.6    -      -       -      +
    332A  ASP*     1.3    64.0    +      -       -      +
    334A  VAL*     3.3     5.0    +      -       -      +
    335A  LYS*     3.3    38.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 332 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328A  LYS*     2.7    57.5    +      -       -      +
    329A  LYS*     3.9     6.4    +      -       -      +
    331A  GLU*     1.3    72.2    -      -       -      +
    333A  PHE*     1.3    66.4    +      -       -      +
    335A  LYS*     3.1    12.0    +      -       -      +
    336A  THR*     3.0    28.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 333 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  PHE*     3.6    19.7    -      +       +      -
    115A  ASN*     5.4     6.1    -      -       -      -
    118A  ALA*     3.6    35.4    -      -       +      -
    119A  THR*     3.7    23.6    -      -       -      -
    122A  ALA*     4.1     8.1    -      -       +      -
    150A  ILE*     4.0    16.2    -      -       +      -
    329A  LYS      3.1    17.8    +      -       -      +
    330A  GLY      3.6     5.4    -      -       -      +
    331A  GLU      3.3     0.2    -      -       -      -
    332A  ASP*     1.3    76.3    -      -       -      +
    334A  VAL*     1.3    65.1    +      -       +      +
    336A  THR*     2.5    30.3    +      -       -      -
    337A  LEU*     3.6    35.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 334 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122A  ALA*     5.9     0.4    -      -       +      -
    150A  ILE*     4.0    26.7    -      -       +      +
    153A  GLU*     3.8    38.6    -      -       +      +
    154A  VAL*     4.6     8.7    -      -       +      +
    157A  LYS*     5.9     3.8    -      -       +      -
    330A  GLY      3.5    12.5    +      -       -      +
    331A  GLU      3.3     7.5    +      -       -      +
    332A  ASP      3.3     0.4    -      -       -      -
    333A  PHE*     1.3    83.9    -      -       +      +
    335A  LYS*     1.3    64.5    +      -       +      +
    337A  LEU*     3.2    33.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153A  GLU*     4.1    23.4    +      -       -      -
    331A  GLU*     3.3    29.5    +      -       -      +
    332A  ASP*     3.1    15.5    +      -       -      +
    334A  VAL*     1.3    84.0    -      -       +      +
    336A  THR*     1.3    58.7    +      -       +      +
    337A  LEU      3.2     7.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 336 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332A  ASP*     3.0    18.0    +      -       +      +
    333A  PHE*     2.5    30.0    +      -       -      -
    335A  LYS*     1.3    76.9    -      -       +      +
    337A  LEU*     1.3    65.5    +      -       -      +
----------------------------------------------------------
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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