Contacts of the helix formed by residues 3 - 28 (chain C) in PDB entry 5MJ3


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 3 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET*     1.3    77.4    -      -       -      +
      4C  ILE*     1.3    62.2    +      -       -      +
      5C  GLN*     2.9    20.7    +      -       -      +
      6C  GLU*     3.0    31.4    +      -       -      +
      7C  ILE*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 4 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET      3.7     1.5    +      -       -      +
      3C  SER*     1.3    74.2    +      -       -      +
      5C  GLN*     1.3    61.7    +      -       -      +
      7C  ILE*     3.3     8.9    +      -       +      +
      8C  GLN*     2.9    33.4    +      -       +      +
     69C  ILE*     3.9    24.5    -      -       +      +
     70C  TYR*     6.4     0.4    -      -       +      -
     72C  MET*     3.1    39.9    -      -       +      -
     92C  ILE*     3.2    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 5 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3C  SER*     2.9    12.0    +      -       -      +
      4C  ILE*     1.3    79.0    -      -       -      +
      6C  GLU*     1.3    57.3    +      -       +      +
      8C  GLN*     3.3     6.8    +      -       -      +
      9C  LYS*     2.9    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 6 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET*     3.2    34.6    -      -       +      +
      3C  SER*     3.0    29.3    +      -       -      +
      4C  ILE      3.3     0.4    -      -       -      -
      5C  GLN*     1.3    77.5    -      -       +      +
      7C  ILE*     1.3    58.7    +      -       -      +
      9C  LYS*     3.2    12.9    +      -       +      +
     10C  GLU*     2.9    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 7 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET*     4.1    16.8    -      -       -      +
      3C  SER      3.0    20.6    +      -       -      +
      4C  ILE*     3.7     8.7    -      -       +      +
      6C  GLU*     1.3    75.4    -      -       -      +
      8C  GLN*     1.3    58.7    +      -       -      +
     10C  GLU*     3.2    11.0    +      -       -      +
     11C  ILE*     2.9    31.6    +      -       +      +
     69C  ILE*     3.7    29.8    -      -       +      -
     92C  ILE*     3.7    39.0    -      -       +      -
     95C  ILE*     4.0    12.8    -      -       +      -
     96C  GLN*     4.0    15.9    -      -       +      -
     99C  ILE*     3.9    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 8 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4C  ILE*     2.9    24.5    +      -       +      +
      5C  GLN*     3.8     5.8    -      -       -      +
      7C  ILE*     1.3    76.8    -      -       -      +
      9C  LYS*     1.3    58.6    +      -       -      +
     11C  ILE*     3.3    10.7    +      -       -      +
     12C  ALA*     2.9    28.9    +      -       -      +
     66C  GLN*     2.6    36.7    +      -       -      +
     69C  ILE*     4.2    16.1    -      -       +      +
     70C  TYR*     2.5    39.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 9 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  ARG      5.9     2.5    -      -       -      +
     58B  GLU*     5.2    11.2    -      -       +      +
      5C  GLN      2.9    14.4    +      -       -      +
      6C  GLU*     3.2    13.0    +      -       +      +
      8C  GLN*     1.3    76.8    -      -       -      +
     10C  GLU*     1.3    63.0    +      -       +      +
     12C  ALA*     3.2     6.7    +      -       +      +
     13C  GLN*     3.0    49.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 10 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET*     3.7    32.9    -      -       -      +
      6C  GLU      2.9    12.1    +      -       -      +
      7C  ILE*     3.2    10.7    +      -       -      +
      9C  LYS*     1.3    77.2    -      -       +      +
     11C  ILE*     1.3    62.2    +      -       -      +
     13C  GLN*     3.3    12.9    +      -       -      +
     14C  ILE*     3.0    29.2    +      -       -      +
     96C  GLN*     5.3     2.9    -      -       -      +
     99C  ILE*     3.9    33.6    -      -       +      +
    103C  GLN*     4.4    13.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 11 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  ILE*     2.9    23.7    +      -       +      +
      8C  GLN*     3.7    11.9    -      -       -      +
      9C  LYS      3.2     0.2    -      -       -      -
     10C  GLU*     1.3    75.7    -      -       -      +
     12C  ALA*     1.3    59.6    +      -       -      +
     14C  ILE*     3.3     8.4    +      -       -      +
     15C  GLN*     2.8    31.6    +      -       +      +
     62C  ILE*     3.8    28.5    -      -       +      -
     65C  ILE*     4.4    11.7    -      -       +      -
     66C  GLN*     3.8    26.5    -      -       +      +
     69C  ILE*     3.0    36.8    -      -       +      -
     99C  ILE*     4.0    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 12 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124A  LYS*     4.5    20.6    -      -       -      +
     55B  ASP*     5.6     0.2    -      -       -      +
      8C  GLN      2.9    17.6    +      -       -      +
      9C  LYS*     3.2     8.5    +      -       +      +
     11C  ILE*     1.3    76.3    -      -       -      +
     13C  GLN*     1.3    59.5    +      -       +      +
     15C  GLN*     3.4     8.1    +      -       -      +
     16C  ALA*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 13 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56B  LEU*     4.3    37.2    -      -       +      +
     57B  ARG      5.4     2.8    +      -       -      -
     58B  GLU*     4.6    12.5    +      -       -      +
    156B  TRP*     4.5     7.7    +      -       +      +
    157B  GLN*     5.6     0.3    +      -       -      -
    160B  LEU*     3.4    32.3    -      -       +      +
    164B  LYS*     5.8     2.8    -      -       -      +
      9C  LYS*     3.0    36.5    +      -       +      +
     10C  GLU*     3.7    11.9    -      -       -      +
     12C  ALA*     1.3    75.5    -      -       +      +
     14C  ILE*     1.3    66.8    +      -       -      +
     16C  ALA*     3.2     2.8    +      -       -      +
     17C  VAL*     3.0    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 14 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156B  TRP*     4.0    26.2    -      -       +      -
     10C  GLU      3.0    19.9    +      -       -      +
     11C  ILE*     3.6     7.4    -      -       -      +
     13C  GLN*     1.3    78.8    -      -       -      +
     15C  GLN*     1.3    63.9    +      -       -      +
     17C  VAL*     3.3     1.2    +      -       -      +
     18C  ILE*     3.0    30.5    +      -       +      +
     62C  ILE*     4.0    17.5    -      -       +      -
     99C  ILE*     3.6    39.0    -      -       +      +
    102C  ILE*     4.0    16.2    -      -       +      -
    103C  GLN*     4.1    13.2    -      -       +      +
    106C  ILE*     3.5    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 15 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11C  ILE*     2.8    28.7    +      -       +      +
     12C  ALA*     3.7     7.2    -      -       -      +
     14C  ILE*     1.3    74.4    -      -       -      +
     16C  ALA*     1.3    62.1    +      -       -      +
     18C  ILE*     3.4    18.2    -      -       -      +
     19C  ALA*     3.1    25.3    +      -       -      +
     59C  GLN*     4.6    12.4    +      -       -      +
     62C  ILE*     3.4    33.7    -      -       +      +
     63C  ALA*     5.4     2.4    -      -       -      +
     66C  GLN*     4.8     9.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 16 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  VAL*     3.7    13.0    -      -       +      +
     55B  ASP*     3.4    41.3    -      -       +      +
     56B  LEU*     3.9    10.5    -      -       +      -
     12C  ALA      2.9    18.0    +      -       -      +
     13C  GLN      3.2     4.0    +      -       -      +
     15C  GLN*     1.3    77.1    -      -       -      +
     17C  VAL*     1.3    63.6    +      -       -      +
     19C  ALA*     3.4     5.8    +      -       -      +
     20C  GLY*     3.0    18.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 17 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  VAL*     4.2     9.6    -      -       +      -
     56B  LEU*     4.6     2.7    -      -       +      -
    156B  TRP*     4.2    13.2    -      -       +      -
    159B  LEU*     4.3     6.7    -      -       +      -
    160B  LEU*     3.9    22.7    -      -       +      -
    163B  PHE*     3.9    31.5    -      -       +      -
     13C  GLN      3.0    21.0    +      -       -      +
     14C  ILE      3.9     2.7    -      -       -      +
     16C  ALA*     1.3    76.0    -      -       -      +
     18C  ILE*     1.3    59.7    +      -       -      +
     20C  GLY*     3.1     2.4    +      -       -      -
     21C  ILE*     2.9    45.5    +      -       +      +
    106C  ILE*     4.0    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 18 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  ILE*     3.0    20.0    +      -       +      +
     15C  GLN*     3.4    20.0    -      -       -      +
     17C  VAL*     1.3    77.6    -      -       -      +
     19C  ALA*     1.3    60.0    +      -       -      +
     21C  ILE*     3.8     7.6    -      -       +      +
     22C  GLN*     2.9    30.7    +      -       -      +
     55C  ILE*     4.1    16.4    -      -       +      +
     58C  ILE*     4.1    18.6    -      -       +      -
     59C  GLN*     3.4    38.6    -      -       +      +
     62C  ILE*     4.6     1.8    -      -       +      -
    106C  ILE*     3.2    42.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 19 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  GLN      3.1    19.2    +      -       -      +
     16C  ALA*     3.7     6.3    -      -       -      +
     18C  ILE*     1.3    77.3    -      -       -      +
     20C  GLY*     1.3    57.9    +      -       -      +
     22C  GLN*     3.4    14.5    +      -       -      +
     23C  LYS*     3.0    27.2    +      -       -      +
     59C  GLN*     4.4     7.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 20 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PRO*     3.9     7.7    -      -       -      +
     50B  LEU      3.0    29.2    +      -       -      +
     51B  VAL*     5.2     0.9    -      -       -      +
    163B  PHE*     5.6     0.2    -      -       -      -
     16C  ALA      3.0    12.0    +      -       -      -
     17C  VAL*     3.1     3.3    +      -       -      -
     19C  ALA*     1.3    73.8    -      -       -      +
     21C  ILE*     1.3    63.8    +      -       -      +
     23C  LYS*     3.3     7.5    +      -       -      +
     24C  TYR*     2.9    23.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 21 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PRO*     4.2    18.1    -      -       +      +
    159B  LEU*     5.5     0.4    -      -       +      -
    163B  PHE*     5.2     1.6    -      -       +      -
     17C  VAL*     2.9    28.3    +      -       +      +
     18C  ILE*     3.8     7.4    -      -       +      +
     20C  GLY*     1.3    74.9    -      -       -      +
     22C  GLN*     1.3    63.6    +      -       -      +
     24C  TYR*     3.1     7.8    +      -       +      +
     25C  ILE*     3.0    29.8    +      -       +      +
     55C  ILE*     3.7    22.0    -      -       +      -
    106C  ILE*     3.9    28.9    -      -       +      +
    109C  ILE*     4.3    12.6    -      -       +      -
    110C  TYR*     4.4    25.4    -      -       +      +
    113C  ILE*     4.8     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 22 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18C  ILE      2.9    15.3    +      -       -      +
     19C  ALA*     3.4     8.9    -      -       -      +
     21C  ILE*     1.3    78.6    -      -       -      +
     23C  LYS*     1.3    61.7    +      -       -      +
     25C  ILE*     3.4    11.9    +      -       -      +
     26C  TYR*     3.5    36.5    +      -       +      +
     52C  GLN*     5.0     5.9    +      -       +      +
     55C  ILE*     4.0    24.6    -      -       +      +
     56C  ALA*     4.7     8.9    -      -       -      +
     59C  GLN*     3.0    40.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 23 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  LEU*     5.3    15.0    -      -       +      -
     19C  ALA      3.0    16.0    +      -       -      +
     20C  GLY*     3.3     7.4    +      -       -      +
     22C  GLN*     1.3    75.9    -      -       -      +
     24C  TYR*     1.3    62.9    +      -       -      +
     26C  TYR*     3.2    33.4    +      -       +      +
     27C  THR*     3.4    13.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 24 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  TRP      6.0     0.2    -      -       -      -
     46B  SER      3.4    23.1    +      -       -      -
     47B  ALA      3.2    16.5    +      -       -      -
     48B  HIS      3.6    15.9    -      -       -      -
     49B  PRO*     3.5    29.2    -      -       +      -
     50B  LEU*     6.3     0.4    -      -       +      -
    120B  PRO*     4.3     3.3    -      -       -      +
     20C  GLY      2.9    17.5    +      -       -      +
     21C  ILE*     3.1     6.3    +      -       +      +
     23C  LYS*     1.3    77.7    -      -       -      +
     25C  ILE*     1.3    62.0    +      -       -      +
     27C  THR*     2.6    37.9    +      -       +      -
     28C  MET*     3.5    16.1    -      -       +      +
    113C  ILE*     3.7    22.7    -      -       +      -
    114C  MET*     3.7    21.7    -      -       +      +
    117C  VAL*     3.7    23.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 25 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21C  ILE*     3.0    14.1    +      -       +      +
     22C  GLN*     3.6     9.2    -      -       -      +
     23C  LYS      3.3     0.2    -      -       -      -
     24C  TYR*     1.3    76.6    -      -       +      +
     26C  TYR*     1.3    68.3    +      -       +      +
     28C  MET*     3.0    33.6    +      -       +      +
     48C  ILE*     3.5    31.0    -      -       +      +
     51C  ILE*     3.8    18.8    -      -       +      -
     52C  GLN*     4.9    10.5    -      -       +      +
     55C  ILE*     3.2    35.2    -      -       +      -
    113C  ILE*     3.9    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 26 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22C  GLN*     3.5    36.9    +      -       +      +
     23C  LYS*     3.2    21.9    +      -       +      +
     25C  ILE*     1.3    84.5    -      -       +      +
     27C  THR*     1.3    63.2    +      -       +      +
     28C  MET      3.0    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 27 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  SER      5.3     1.6    +      -       -      -
     23C  LYS*     3.4    20.9    -      -       +      +
     24C  TYR*     2.6    35.9    +      -       +      +
     26C  TYR*     1.3    75.8    -      -       +      +
     28C  MET*     1.3    57.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 28 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  TYR*     3.5    13.9    -      -       +      +
     25C  ILE*     3.1    31.9    -      -       +      +
     26C  TYR      3.0    11.8    -      -       -      +
     27C  THR*     1.3    81.1    -      -       -      +
     48C  ILE*     4.9    20.1    -      -       +      +
    113C  ILE*     3.8    24.2    -      -       +      -
    116C  MET*     3.7    37.0    -      -       +      -
    117C  VAL*     3.7    33.7    -      -       +      -
----------------------------------------------------------
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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