Contacts of the helix formed by residues 298 - 324 (chain A) in PDB entry 4CEJ


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 ASP 298 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  GLY*     3.1    23.0    +      -       -      +
    297A  PHE*     1.3    83.3    -      -       -      +
    299A  PRO*     1.3    61.8    -      -       -      +
    300A  ALA*     3.4    17.2    +      -       -      +
    301A  LEU*     2.9    20.2    +      -       +      +
    302A  LEU*     2.5    36.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  ASP*     5.3     9.6    -      -       -      +
    297A  PHE*     4.2     4.0    -      -       +      +
    298A  ASP*     1.3    90.2    -      -       -      +
    300A  ALA*     1.3    55.6    +      -       -      +
    302A  LEU*     3.7    13.7    -      -       +      +
    303A  ASP*     3.0    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  ASP*     3.0    12.3    +      -       -      +
    299A  PRO*     1.3    81.0    -      -       -      +
    301A  LEU*     1.3    58.3    +      -       -      +
    303A  ASP*     3.7     3.4    -      -       -      +
    304A  GLU*     3.0    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243A  LEU*     3.6    49.4    -      -       +      +
    246A  ALA*     4.2    13.2    -      -       +      -
    248A  GLY*     4.3     4.5    -      -       -      +
    249A  GLY*     3.8    19.5    -      -       -      +
    250A  PRO*     3.7    13.0    -      -       +      -
    298A  ASP*     2.9    21.9    +      -       +      +
    300A  ALA*     1.3    75.7    -      -       -      +
    302A  LEU*     1.3    66.0    +      -       -      +
    304A  GLU*     3.5    10.6    -      -       -      +
    305A  ALA*     3.0    22.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  GLY      5.5     0.2    +      -       -      -
    250A  PRO*     4.7    13.3    -      -       +      +
    253A  ARG*     3.6    21.0    +      -       -      +
    292A  VAL*     3.6    38.6    -      -       +      +
    294A  GLY      5.6     1.8    -      -       -      +
    297A  PHE*     4.4    15.9    -      -       +      -
    298A  ASP      2.5    21.7    +      -       -      +
    299A  PRO*     3.7    14.4    -      -       +      +
    301A  LEU*     1.3    75.2    -      -       -      +
    303A  ASP*     1.3    64.4    +      -       +      +
    305A  ALA*     3.8     2.9    +      -       -      +
    306A  THR*     3.5    21.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  PRO      3.0    19.3    +      -       -      +
    300A  ALA*     3.7     4.0    -      -       -      +
    302A  LEU*     1.3    80.0    -      -       +      +
    304A  GLU*     1.3    57.2    +      -       -      +
    306A  THR*     2.8    23.9    +      -       -      -
    307A  ASP*     2.8    24.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239A  ARG*     5.3     6.8    +      -       -      -
    243A  LEU*     4.8    11.8    -      -       +      +
    300A  ALA*     3.0    19.6    +      -       -      +
    301A  LEU*     3.1    13.2    +      -       -      +
    303A  ASP*     1.3    77.9    -      -       -      +
    305A  ALA*     1.3    65.6    +      -       -      +
    306A  THR      3.2     1.1    -      -       -      -
    307A  ASP*     3.0    28.2    +      -       +      +
    308A  LEU*     3.2    19.6    +      -       +      +
    896A  ALA*     5.3     9.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240A  ALA*     4.5     2.8    -      -       +      +
    243A  LEU*     4.3    22.3    -      -       +      +
    250A  PRO*     4.5    15.9    -      -       +      -
    253A  ARG*     5.7     2.0    -      -       -      -
    257A  PHE*     4.1    25.7    -      -       +      -
    301A  LEU      3.0    15.2    +      -       -      +
    302A  LEU      4.2     4.0    -      -       -      +
    304A  GLU*     1.3    75.3    -      -       -      +
    306A  THR*     1.3    63.9    +      -       +      +
    308A  LEU*     3.1     8.2    +      -       -      +
    309A  ARG*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253A  ARG*     3.5    40.6    -      -       -      +
    257A  PHE*     5.8     0.7    -      -       -      -
    289A  ALA*     5.4     4.0    -      -       +      -
    302A  LEU*     3.5    10.1    +      -       +      +
    303A  ASP*     2.8    31.7    +      -       -      -
    305A  ALA*     1.3    75.6    -      -       +      +
    307A  ASP*     1.3    58.1    +      -       -      +
    309A  ARG*     3.7     9.3    -      -       -      +
    310A  ASN*     2.9    44.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  LYS*     5.6     0.2    -      -       -      -
    303A  ASP*     2.8    27.1    -      -       -      +
    304A  GLU*     3.0    19.4    +      -       +      +
    306A  THR*     1.3    84.3    +      -       -      +
    308A  LEU*     1.3    59.2    +      -       +      +
    310A  ASN*     3.4    10.2    +      -       -      +
    311A  GLY*     2.9    24.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  LYS*     3.4    49.0    -      -       +      +
    237A  LEU*     4.9     1.1    -      -       -      +
    239A  ARG*     3.6    22.0    -      -       +      +
    240A  ALA*     3.5    25.1    -      -       +      +
    243A  LEU*     4.3    11.4    -      -       +      -
    304A  GLU*     3.2    24.7    +      -       +      +
    305A  ALA      3.1     9.5    +      -       -      +
    307A  ASP*     1.3    83.1    -      -       +      +
    309A  ARG*     1.3    61.9    +      -       -      +
    311A  GLY*     3.0    11.7    +      -       -      -
    312A  ALA*     3.0    12.0    +      -       -      +
    896A  ALA*     6.2     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237A  LEU*     4.2    13.2    -      -       +      +
    240A  ALA*     5.2     0.6    -      -       -      +
    253A  ARG*     6.1     1.8    -      -       -      +
    256A  ASN*     3.9    17.4    +      -       -      +
    257A  PHE*     3.7    26.0    -      -       +      -
    260A  ASP*     2.8    40.8    +      -       -      +
    286A  PHE*     3.5    25.3    +      -       +      +
    287A  LYS*     2.7    33.1    +      -       -      +
    289A  ALA*     4.0    20.3    -      -       -      +
    305A  ALA      3.0    12.1    +      -       -      +
    306A  THR*     3.7    11.4    -      -       -      +
    308A  LEU*     1.3    76.5    -      -       -      +
    310A  ASN*     1.3    59.5    +      -       -      +
    312A  ALA*     3.1     7.3    +      -       -      +
    313A  LYS*     3.0    28.6    +      -       +      +
     41X    C      4.2     7.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  THR*     2.9    32.1    +      -       -      +
    307A  ASP*     3.7    10.9    +      -       -      +
    309A  ARG*     1.3    75.6    -      -       -      +
    311A  GLY*     1.3    60.1    +      -       -      +
    313A  LYS*     3.3    25.5    +      -       +      +
    314A  LYS*     2.9    29.3    +      -       -      +
     41X    C      4.6    12.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  LYS*     4.1    22.9    -      -       -      -
    307A  ASP      2.9    14.6    +      -       -      -
    308A  LEU      3.0     6.2    +      -       -      -
    310A  ASN*     1.3    75.1    -      -       -      +
    312A  ALA*     1.3    62.0    -      -       -      +
    314A  LYS*     3.3     6.3    +      -       -      +
    315A  LEU*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  ALA*     4.1    24.6    -      -       +      +
    236A  LYS*     4.3     2.3    -      -       +      +
    237A  LEU*     3.8    30.7    -      -       +      -
    264A  ILE*     4.6     0.4    -      -       +      -
    286A  PHE*     3.9    13.7    -      -       +      -
    308A  LEU      3.0     7.8    +      -       -      +
    309A  ARG      3.1    10.3    +      -       -      +
    311A  GLY*     1.3    75.5    -      -       -      +
    313A  LYS*     1.3    63.1    +      -       -      +
    315A  LEU*     3.4     3.0    +      -       -      +
    316A  LEU*     3.0    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 313 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  PHE*     3.4    39.3    -      -       +      +
    309A  ARG*     3.0    17.9    +      -       +      +
    310A  ASN*     3.3    26.2    -      -       -      +
    311A  GLY      3.2     0.2    -      -       -      -
    312A  ALA*     1.3    76.1    -      -       -      +
    314A  LYS*     1.3    58.1    +      -       -      +
    316A  LEU*     3.1     7.3    +      -       -      +
    317A  GLU*     2.9    30.1    +      -       -      +
     41X    C      4.1    11.1    +      -       -      +
     42X    G      2.4    40.6    +      -       -      +
----------------------------------------------------------
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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  ASN      2.9    14.9    +      -       -      +
    311A  GLY*     3.8     7.2    -      -       -      +
    313A  LYS*     1.3    76.9    -      -       -      +
    315A  LEU*     1.3    65.2    +      -       +      +
    317A  GLU*     3.4     9.0    +      -       +      +
    318A  LYS*     2.9    34.5    +      -       +      +
      9X    T      5.4     3.4    +      -       -      +
     10X    A      3.9    20.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  VAL*     3.5    34.1    -      -       +      +
    232A  GLY*     3.6     8.5    -      -       -      +
    233A  ALA*     3.6    23.6    -      -       +      +
    236A  LYS*     4.1    13.7    -      -       +      +
    311A  GLY*     3.0    25.7    +      -       -      +
    312A  ALA      3.6     4.7    -      -       -      +
    314A  LYS*     1.3    86.4    -      -       +      +
    316A  LEU*     1.3    58.0    +      -       +      +
    318A  LYS*     3.3     7.1    +      -       -      +
    319A  LEU*     3.0    28.6    +      -       -      +
    908A  PHE*     3.5    42.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 316 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  VAL      5.9     0.7    -      -       -      +
    230A  LEU*     3.9    28.3    -      -       +      -
    233A  ALA*     4.8     4.9    -      -       +      -
    264A  ILE*     4.4    16.8    -      -       +      -
    267A  LEU*     4.3     9.9    -      -       +      -
    281A  VAL*     4.4    11.1    -      -       +      +
    284A  VAL*     3.6    41.3    -      -       +      +
    286A  PHE*     4.4    15.0    -      -       +      -
    312A  ALA      3.0    14.9    +      -       -      +
    313A  LYS*     3.1     8.9    +      -       -      +
    315A  LEU*     1.3    74.6    -      -       +      +
    317A  GLU*     1.3    60.3    +      -       -      +
    319A  LEU*     3.1     8.5    +      -       +      +
    320A  LYS*     2.8    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 317 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  LYS      2.9    16.8    +      -       -      +
    314A  LYS*     3.8    10.3    -      -       +      +
    316A  LEU*     1.3    75.8    -      -       -      +
    318A  LYS*     1.3    59.4    +      -       +      +
    320A  LYS*     3.5    22.5    -      -       -      +
    321A  THR*     2.9    48.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 318 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  VAL*     6.5     0.7    -      -       +      -
    314A  LYS*     2.9    24.4    +      -       +      +
    315A  LEU*     3.5     7.4    -      -       -      +
    316A  LEU      3.2     0.2    -      -       -      -
    317A  GLU*     1.3    77.2    -      -       -      +
    319A  LEU*     1.3    59.5    +      -       -      +
    321A  THR*     3.1     8.0    +      -       -      +
    322A  ASP*     2.7    73.2    +      -       -      +
    853A  LYS*     3.4    18.4    -      -       -      +
      9X    T      5.4     9.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 319 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225A  ASP*     5.0     1.3    -      -       -      +
    226A  ILE*     3.9    18.2    -      -       +      -
    229A  VAL*     3.7    26.5    -      -       +      -
    230A  LEU*     3.7    33.0    -      -       +      -
    281A  VAL*     4.3    18.6    -      -       +      -
    315A  LEU      3.0    15.5    +      -       -      +
    316A  LEU*     3.4    11.2    -      -       +      +
    318A  LYS*     1.3    75.5    -      -       -      +
    320A  LYS*     1.3    62.9    +      -       -      +
    322A  ASP*     3.4     3.5    +      -       -      -
    323A  TYR*     3.1    52.7    +      -       +      -
    324A  PHE*     3.7    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281A  VAL*     4.0     9.4    -      -       +      +
    282A  PRO*     3.7    41.1    -      -       +      +
    316A  LEU      2.8    16.6    +      -       -      +
    317A  GLU*     3.5    24.9    -      -       -      +
    319A  LEU*     1.3    75.1    -      -       -      +
    321A  THR*     1.3    69.9    +      -       -      +
    324A  PHE*     2.7    51.4    +      -       +      +
    325A  THR*     3.5    17.8    +      -       -      +
   1020B  LEU*     5.6     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317A  GLU*     2.9    41.7    +      -       -      +
    318A  LYS*     3.1    14.7    +      -       -      +
    320A  LYS*     1.3    85.3    -      -       -      +
    322A  ASP*     1.3    64.1    +      -       -      +
    325A  THR*     3.6    15.8    +      -       +      -
   1019B  ASN*     2.4    42.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225A  ASP*     4.5     0.2    -      -       -      +
    318A  LYS*     2.7    58.2    +      -       -      +
    319A  LEU*     3.6     6.3    -      -       -      +
    321A  THR*     1.3    83.3    +      -       -      +
    323A  TYR*     1.3    78.0    +      -       +      +
    325A  THR*     5.2     1.0    +      -       -      -
    331A  HIS*     4.7     6.4    +      -       -      -
    849A  ILE*     3.1    32.1    -      -       +      +
    853A  LYS*     3.1    22.2    +      -       -      -
   1019B  ASN*     4.7     3.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221A  TYR      4.9     0.2    +      -       -      -
    222A  VAL*     3.5    35.9    -      -       +      +
    225A  ASP*     2.5    39.4    +      -       +      +
    226A  ILE*     4.2     8.7    -      -       +      -
    274A  PHE*     3.8    10.9    -      +       +      -
    319A  LEU*     3.1    36.4    +      -       +      -
    322A  ASP*     1.3    90.2    -      -       +      +
    324A  PHE*     1.3    85.9    +      +       +      +
    325A  THR*     3.7     2.2    -      -       -      -
    326A  ARG      3.7     2.1    -      -       -      +
    331A  HIS*     3.1    29.5    +      -       -      -
    846A  LEU*     4.1    15.5    -      -       +      -
    849A  ILE*     3.7    25.5    +      -       +      +
    850A  ALA*     5.5     0.2    -      -       -      -
    853A  LYS*     3.6     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 324 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  ILE*     4.3     5.2    -      -       +      -
    274A  PHE*     3.4    34.3    -      +       -      -
    277A  LEU*     3.6    22.0    -      -       +      -
    278A  TYR*     3.6    52.3    -      -       +      -
    281A  VAL*     3.6    34.1    -      -       +      -
    282A  PRO*     4.2    21.3    -      -       +      +
    319A  LEU*     3.7    26.5    -      -       +      -
    320A  LYS*     2.7    27.6    +      -       -      +
    323A  TYR*     1.3    90.3    -      -       +      +
    325A  THR*     1.3    59.5    +      -       -      +
    326A  ARG      3.4     1.1    -      -       -      +
----------------------------------------------------------
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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