Contacts of the helix formed by residues 321 - 345 (chain D) in PDB entry 1EJI


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 THR 321 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21C  MSE      3.7    17.3    -      -       -      -
    317D  LYS*     3.8    12.3    -      -       +      +
    318D  GLN*     2.8    27.6    +      -       -      +
    319D  ALA      4.0     1.4    -      -       -      +
    320D  MSE      1.3    81.6    -      -       -      +
    322D  THR*     1.3    60.1    +      -       -      +
    323D  GLU*     3.4    14.6    +      -       -      +
    324D  PHE*     2.9    18.0    +      -       -      +
    325D  LYS*     3.2    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 322 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LEU*     3.2    27.4    -      -       +      -
    321D  THR*     1.3    72.1    -      -       -      +
    323D  GLU*     1.3    70.4    +      -       -      +
    324D  PHE      2.9     2.0    -      -       -      -
    325D  LYS*     3.2    13.8    +      -       +      +
    326D  ILE*     2.8    30.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 323 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LEU*     4.1    11.2    -      -       +      +
     17C  SER*     3.2    37.7    +      -       -      -
     18C  HIS*     3.2    36.9    -      -       +      +
     21C  MSE      4.2    10.0    -      -       +      +
    321D  THR*     3.5    16.0    -      -       -      +
    322D  THR*     1.3    89.1    +      -       -      +
    324D  PHE*     1.3    57.0    +      -       -      +
    326D  ILE*     2.8    23.5    -      -       -      +
    327D  TYR      3.1     7.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 324 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18C  HIS*     4.8     1.1    -      -       -      -
     21C  MSE      4.8     1.3    -      -       +      -
    234D  GLY*     3.9    16.2    -      -       -      -
    237D  ALA*     4.6     0.9    -      -       +      -
    238D  ALA*     4.2    10.8    -      -       +      -
    258D  THR      3.9    11.7    -      -       -      -
    259D  LEU*     4.2    17.7    -      -       +      -
    260D  ARG*     3.6    29.2    -      -       +      -
    315D  ALA      5.9     0.4    -      -       -      -
    318D  GLN*     3.2    20.9    -      -       +      +
    319D  ALA*     2.8    45.3    -      -       +      +
    321D  THR*     2.9    12.4    +      -       -      +
    323D  GLU*     1.3    75.5    -      -       -      +
    325D  LYS*     1.3    68.7    +      -       -      +
    326D  ILE      3.0     1.6    -      -       -      -
    327D  TYR*     2.9    22.8    +      +       -      +
    328D  GLN*     2.9    38.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 325 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238D  ALA*     3.0    43.3    +      -       +      +
    239D  GLY*     4.5     6.7    -      -       -      -
    240D  VAL*     4.3     2.4    -      -       +      +
    321D  THR      3.2    10.9    +      -       -      +
    322D  THR*     3.2    16.1    +      -       +      +
    324D  PHE*     1.3    78.8    -      -       -      +
    326D  ILE*     1.3    58.4    +      -       -      +
    328D  GLN*     3.8     2.9    +      -       -      +
    329D  LEU*     3.2    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 326 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  MET*     4.4     9.2    -      -       +      -
     11C  ASP*     4.0    24.9    -      -       +      +
     14C  LEU*     4.2    27.6    -      -       +      -
     15C  TRP*     3.5    37.9    -      -       +      +
     18C  HIS*     5.2     3.6    -      -       +      -
    322D  THR*     2.8    20.3    +      -       +      +
    323D  GLU*     2.8    33.4    -      -       -      +
    325D  LYS*     1.3    77.1    -      -       -      +
    327D  TYR*     1.3    64.3    +      -       -      +
    329D  LEU*     3.1    13.1    +      -       +      +
    330D  GLN*     3.0    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 327 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  TRP*     4.7     7.6    -      +       -      -
     18C  HIS*     3.4    29.6    -      +       +      +
     55D  ASN*     3.2    14.6    +      -       -      -
    258D  THR      4.8     2.7    -      -       -      -
    260D  ARG*     3.5    23.3    -      -       -      -
    323D  GLU      3.1    10.9    +      -       -      +
    324D  PHE*     2.9    16.7    +      +       -      +
    326D  ILE*     1.3    76.5    -      -       -      +
    328D  GLN*     1.3    98.0    +      -       -      +
    330D  GLN*     3.0     9.2    +      -       -      +
    331D  VAL*     2.9    38.5    +      -       +      +
    406D  PRO*     2.9    28.8    +      -       -      +
    409D  THR*     3.5     9.4    -      -       +      -
    410D  SER*     3.0    35.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 328 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234D  GLY      3.9     6.1    -      -       -      -
    235D  LEU*     2.9    49.8    -      -       +      +
    238D  ALA*     3.6    23.1    -      -       +      -
    240D  VAL*     4.1     6.7    -      -       +      -
    258D  THR*     3.4    17.7    +      -       -      +
    324D  PHE*     2.9    38.0    +      -       -      +
    325D  LYS      3.9     1.8    -      -       -      +
    327D  TYR*     1.3    92.9    +      -       -      +
    329D  LEU*     1.3    62.1    +      -       -      +
    331D  VAL*     3.2    21.6    -      -       -      +
    332D  LEU*     3.1    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 329 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240D  VAL*     3.8    22.2    -      -       +      -
    325D  LYS*     3.2    31.2    +      -       +      +
    326D  ILE*     3.1    17.1    +      -       +      +
    328D  GLN*     1.3    74.1    -      -       -      +
    330D  GLN*     1.3    66.5    +      -       -      +
    332D  LEU*     3.2    11.8    +      -       +      +
    333D  ALA*     3.0    22.4    +      -       -      +
    336D  ARG*     4.8     5.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 330 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  MET*     4.0    23.7    -      -       +      +
     15C  TRP*     3.8    17.1    +      -       +      +
    326D  ILE      3.0    11.9    +      -       -      +
    327D  TYR      3.4     8.7    -      -       -      +
    329D  LEU*     1.3    77.0    -      -       -      +
    331D  VAL*     1.3    53.8    +      -       -      +
    333D  ALA*     3.2     5.7    +      -       -      +
    334D  ASN*     2.6    77.9    +      -       -      +
    409D  THR*     3.7     8.3    -      -       +      -
    414D  LEU*     3.3    28.1    -      -       +      +
    415D  GLU*     3.1    28.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 331 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  LEU*     4.6     2.0    -      -       +      -
    327D  TYR*     2.9    56.0    +      -       +      +
    328D  GLN*     3.2    23.6    -      -       -      +
    330D  GLN*     1.3    76.1    -      -       -      +
    332D  LEU*     1.3    62.2    +      -       -      +
    334D  ASN*     3.5     0.9    +      -       -      +
    335D  CYS*     3.2    11.3    +      -       -      +
    357D  HIS*     4.0    11.8    -      -       +      -
    405D  THR*     2.8    35.2    +      -       -      +
    406D  PRO*     3.8    24.2    -      -       +      -
    409D  THR*     3.6    12.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 332 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  LEU*     4.4    11.9    -      -       +      -
    240D  VAL*     3.3    46.4    -      -       +      +
    241D  VAL*     4.3     3.1    -      -       +      -
    328D  GLN      3.1     9.9    +      -       -      +
    329D  LEU*     3.6    12.8    -      -       +      +
    331D  VAL*     1.3    74.2    -      -       -      +
    333D  ALA*     1.3    69.6    +      -       -      +
    335D  CYS*     2.9    20.3    +      -       -      +
    336D  ARG*     3.3    24.9    +      -       -      +
    355D  ASP      3.7     8.1    -      -       -      +
    356D  ASN*     3.2    42.4    -      -       -      +
    357D  HIS*     4.2     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 333 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329D  LEU      3.0    13.9    +      -       -      +
    330D  GLN*     3.4    15.5    -      -       -      +
    332D  LEU*     1.3    75.7    -      -       -      +
    334D  ASN*     1.3    63.3    +      -       -      +
    336D  ARG*     3.1    41.5    +      -       -      +
    337D  ALA*     3.1    12.1    +      -       -      +
    415D  GLU*     4.0    22.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 334 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330D  GLN*     2.6    49.6    +      -       -      +
    331D  VAL      3.7     5.2    -      -       -      +
    333D  ALA*     1.3    72.6    -      -       -      +
    335D  CYS*     1.3    62.9    +      -       -      +
    337D  ALA*     3.4     7.9    -      -       -      +
    338D  LEU*     3.0    23.7    +      -       -      +
    405D  THR*     4.1     2.5    -      -       -      -
    409D  THR*     2.8    23.9    +      -       -      +
    413D  LEU      3.1    19.0    +      -       -      -
    414D  LEU      3.3    16.1    -      -       -      -
    415D  GLU*     3.3     1.8    +      -       -      -
    418D  PHE*     3.2    29.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 335 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331D  VAL      3.2     7.8    +      -       -      +
    332D  LEU      2.9    12.2    +      -       -      +
    334D  ASN*     1.3    76.6    -      -       -      +
    336D  ARG*     1.3    68.2    +      -       +      +
    338D  LEU*     3.0     5.6    +      -       -      +
    339D  SER*     2.8    22.9    +      -       -      -
    354D  SER*     3.6    20.6    -      -       -      -
    356D  ASN      3.5    24.0    -      -       -      +
    357D  HIS*     3.9    10.5    -      -       -      -
    358D  LEU      3.8     4.0    -      -       -      -
    359D  ILE*     3.6    24.0    -      -       -      +
    405D  THR*     3.8    15.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 336 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329D  LEU*     4.8     6.3    +      -       -      +
    332D  LEU*     3.3    20.7    +      -       -      +
    333D  ALA*     3.1    36.9    +      -       -      +
    335D  CYS*     1.3    75.8    -      -       +      +
    337D  ALA*     1.3    55.7    +      -       -      +
    339D  SER*     2.9     7.0    +      -       -      -
    340D  ASP*     2.5    48.9    +      -       -      +
    354D  SER*     5.4     8.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 337 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333D  ALA      3.1     9.2    +      -       -      +
    334D  ASN*     3.4    10.5    -      -       -      +
    336D  ARG*     1.3    79.0    -      -       -      +
    338D  LEU*     1.3    57.3    +      -       -      +
    340D  ASP*     3.4     5.4    +      -       -      +
    341D  ALA*     3.0    32.1    +      -       -      +
    415D  GLU*     3.9    39.0    -      -       +      +
    418D  PHE*     4.6     3.1    -      -       +      -
    419D  GLN*     4.8     8.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 338 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50D  LEU*     4.5    13.0    -      -       +      -
    334D  ASN      3.0    10.5    +      -       -      +
    335D  CYS*     3.6     7.6    -      -       -      +
    337D  ALA*     1.3    80.1    -      -       -      +
    339D  SER*     1.3    57.1    +      -       -      +
    341D  ALA*     4.2     2.0    -      -       -      +
    342D  LEU*     3.0    50.0    +      -       +      +
    359D  ILE*     4.3     6.1    -      -       +      -
    403D  LEU*     4.4    21.3    -      -       +      -
    405D  THR*     4.5     9.2    -      -       +      -
    418D  PHE*     3.8    37.7    -      -       +      +
    421D  VAL*     4.8     1.3    -      -       +      -
    422D  ALA*     3.7    26.2    -      -       +      +
    425D  ILE*     4.4     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 339 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335D  CYS*     2.8    13.7    +      -       -      -
    336D  ARG*     3.5    10.1    -      -       -      -
    338D  LEU*     1.3    74.7    -      -       -      +
    340D  ASP*     1.3    60.4    +      -       -      +
    342D  LEU*     3.8     3.1    -      -       -      +
    343D  THR*     2.5    38.2    +      -       -      -
    349D  ILE*     3.7    24.0    -      -       -      +
    352D  GLY      4.2     2.1    +      -       -      -
    353D  GLY*     3.8    13.7    -      -       -      -
    354D  SER*     5.2     2.0    -      -       -      -
    359D  ILE*     4.0    24.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 340 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    336D  ARG*     2.5    42.7    +      -       -      +
    337D  ALA*     3.7     6.1    -      -       -      +
    339D  SER*     1.3    73.7    +      -       -      +
    341D  ALA*     1.3    55.1    +      -       -      +
    342D  LEU      3.0     1.3    -      -       -      -
    343D  THR*     3.0     6.2    +      -       -      -
    344D  GLU*     2.6    38.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 341 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337D  ALA      3.0    17.0    +      -       -      +
    338D  LEU      4.2     0.7    -      -       -      +
    340D  ASP*     1.3    75.1    -      -       -      +
    342D  LEU*     1.3    57.7    +      -       -      +
    344D  GLU*     3.5    17.8    -      -       -      +
    345D  LEU*     3.0    33.4    +      -       +      +
    419D  GLN*     4.4    23.1    -      -       +      +
    422D  ALA*     3.7    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 342 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338D  LEU*     3.0    31.4    +      -       +      +
    339D  SER*     3.8     4.5    -      -       -      +
    340D  ASP      3.0     0.8    -      -       -      -
    341D  ALA*     1.3    75.4    -      -       -      +
    343D  THR*     1.3    65.4    +      -       -      +
    345D  LEU*     3.3    12.7    +      -       +      -
    346D  GLY      3.4     0.5    +      -       -      -
    347D  TYR*     3.1    34.9    +      -       +      +
    349D  ILE*     4.6     7.0    -      -       +      -
    359D  ILE*     3.9    20.4    -      -       +      -
    361D  MSE      4.0    21.5    -      -       +      -
    403D  LEU*     4.0    13.9    -      -       +      -
    422D  ALA*     3.4    41.5    -      -       +      +
    425D  ILE*     4.9     8.1    -      -       +      -
    426D  HIS      5.5     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 343 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339D  SER*     2.5    26.1    +      -       -      -
    340D  ASP*     3.5     6.4    -      -       -      -
    342D  LEU*     1.3    73.0    -      -       -      +
    344D  GLU*     1.3    59.7    +      -       -      +
    346D  GLY*     2.6    28.9    +      -       -      -
    347D  TYR      3.6    15.6    +      -       -      +
    349D  ILE*     3.7    15.9    -      -       +      +
    352D  GLY      4.4     7.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 344 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    340D  ASP      2.6    21.1    +      -       -      +
    341D  ALA*     3.5    17.2    -      -       -      +
    343D  THR*     1.3    74.7    -      -       -      +
    345D  LEU*     1.3    59.3    +      -       +      +
    346D  GLY*     2.9     5.7    +      -       -      -
    419D  GLN*     5.7     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 345 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341D  ALA*     3.0    21.8    +      -       +      +
    342D  LEU*     3.6    11.7    -      -       +      +
    343D  THR      3.1     0.4    -      -       -      -
    344D  GLU*     1.3    78.6    -      -       +      +
    346D  GLY*     1.3    59.9    +      -       -      +
    347D  TYR*     3.7    15.5    -      -       +      -
    366D  LYS*     5.4     1.2    +      -       -      -
    422D  ALA*     4.1    16.8    -      -       +      +
    423D  HIS*     4.4    10.5    -      -       +      +
    426D  HIS*     3.3    55.8    +      -       +      +
----------------------------------------------------------
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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