Contacts of the helix formed by residues 15 - 37 (chain A) in PDB entry 3QJQ


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 TYR 15 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  VAL*     2.7    36.5    -      -       -      +
     12A  TYR*     2.9     5.1    +      -       -      +
     14A  ALA*     1.3    92.1    -      -       +      +
     16A  PRO*     1.4    57.7    -      -       -      +
     17A  GLU*     3.0    19.3    -      -       +      -
     18A  LYS*     3.0    57.4    +      -       +      +
     19A  LYS      3.7     1.6    +      -       -      -
     95A  ARG*     3.9    37.0    -      -       -      -
     98A  ASN*     5.4     0.4    -      -       -      -
    502A  ALA      5.3     0.2    -      -       -      -
    503A  GLU*     4.0    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 16 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TYR      2.8    19.1    -      -       -      +
     13A  GLU*     4.4     6.1    -      -       -      -
     14A  ALA      3.4    10.8    -      -       -      +
     15A  TYR*     1.4    84.8    -      -       -      +
     17A  GLU*     1.3    56.7    +      -       -      +
     18A  LYS      3.0     3.8    -      -       -      -
     19A  LYS*     3.6    15.1    -      -       +      +
     20A  ALA*     3.1    30.3    +      -       -      +
    100A  ARG*     3.5    24.0    -      -       -      +
    103A  MET*     3.7    17.9    -      -       +      +
    107A  TRP*     4.9     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 17 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  ALA      3.4     8.8    -      -       -      +
     15A  TYR*     3.4    27.5    -      -       +      -
     16A  PRO*     1.3    78.8    -      -       -      +
     18A  LYS*     1.3    60.7    +      -       -      +
     21A  THR*     2.8    31.5    +      -       -      -
     91A  TYR*     3.7    16.4    -      -       +      -
     94A  ALA*     4.5     3.4    -      -       +      +
     95A  ARG*     3.3    19.9    +      -       -      +
     99A  MET      3.1    24.3    -      -       -      +
    100A  ARG*     3.5    25.9    +      -       -      +
    101A  PRO*     4.0    20.3    -      -       +      +
    103A  MET*     3.9    15.3    -      -       -      -
    106A  MET*     4.0     5.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 18 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  VAL*     3.7    23.2    -      -       +      +
     12A  TYR*     5.5     0.4    -      -       +      -
     15A  TYR*     3.0    54.9    +      -       +      +
     17A  GLU*     1.3    77.3    -      -       -      +
     19A  LYS*     1.3    55.2    +      -       -      +
     21A  THR*     3.1     4.0    +      -       -      -
     22A  LEU*     2.8    35.3    +      -       -      +
     91A  TYR*     3.3    30.1    -      -       +      +
     95A  ARG*     5.2     2.0    -      -       -      +
    407A  ASN*     3.3    20.1    +      -       -      +
    408A  LEU*     3.6    25.2    -      -       +      +
    502A  ALA      2.6    31.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 19 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TYR*     3.7    40.9    -      -       +      -
     15A  TYR      3.7     1.6    +      -       -      -
     16A  PRO*     3.4    16.8    +      -       +      +
     18A  LYS*     1.3    77.7    -      -       -      +
     20A  ALA*     1.3    57.6    +      -       -      +
     22A  LEU*     2.8    25.2    +      -       -      +
     23A  TYR*     3.2    35.1    +      -       +      -
    107A  TRP*     3.7    29.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 20 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  PRO      3.1    12.3    +      -       -      +
     19A  LYS*     1.3    80.1    -      -       -      +
     21A  THR*     1.3    61.6    +      -       -      +
     23A  TYR*     3.4     8.5    +      -       -      +
     24A  PHE*     3.1    24.8    +      -       +      -
    103A  MET*     3.8     8.3    -      -       +      -
    106A  MET*     3.8    21.5    -      -       +      +
    107A  TRP*     3.6    39.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 21 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  GLU      2.8    24.2    +      -       -      -
     18A  LYS*     3.1     4.4    +      -       -      -
     19A  LYS      3.1     1.2    -      -       -      -
     20A  ALA*     1.3    78.3    -      -       -      +
     22A  LEU*     1.3    60.7    -      -       -      +
     23A  TYR      3.3     0.7    +      -       -      -
     24A  PHE*     3.5     9.9    +      -       -      +
     25A  LEU*     3.4    17.1    +      -       +      +
     87A  ALA*     4.3    18.4    +      -       +      +
     90A  VAL*     5.5     0.2    -      -       -      +
     91A  TYR*     3.3    41.7    +      -       +      +
    106A  MET*     3.4    15.8    -      -       -      +
    404A  LEU*     5.5     2.7    -      -       +      -
    408A  LEU*     4.2    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 22 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TYR*     4.6    15.0    -      -       +      +
     18A  LYS      2.8    12.7    +      -       -      +
     19A  LYS*     2.8    12.3    +      -       -      +
     21A  THR*     1.3    77.8    -      -       -      +
     23A  TYR*     1.3    71.8    +      -       +      +
     25A  LEU*     3.0     7.4    +      -       +      +
     26A  VAL*     2.8    38.3    +      -       +      +
    405A  LEU*     3.6    32.1    -      -       +      -
    408A  LEU*     4.1    22.2    -      -       +      +
    409A  THR*     4.2    20.9    -      -       +      -
    492A  LEU*     4.8     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 23 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TYR*     5.9     2.0    -      -       -      -
     19A  LYS*     3.2    33.9    +      -       +      +
     20A  ALA      3.9     6.5    -      -       -      +
     21A  THR      3.2     0.6    -      -       -      -
     22A  LEU*     1.3    89.3    -      -       +      +
     24A  PHE*     1.3    65.3    +      -       -      +
     25A  LEU      3.1     1.3    -      -       -      -
     26A  VAL*     4.2     8.2    -      -       +      +
     27A  LEU*     3.0    28.6    +      -       -      +
    107A  TRP*     3.9    25.4    -      +       +      -
    110A  TRP*     3.5    36.5    +      +       +      +
----------------------------------------------------------
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Residues in contact with PHE 24 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  ALA*     3.1    27.4    -      -       +      -
     21A  THR*     3.5     9.8    +      -       -      +
     22A  LEU      3.4     0.2    -      -       -      -
     23A  TYR*     1.3    77.8    -      -       -      +
     25A  LEU*     1.3    57.4    +      -       -      +
     27A  LEU*     4.8     1.3    -      -       -      -
     28A  GLY*     3.1    18.9    +      -       -      -
     83A  LEU*     3.4    46.4    -      -       +      +
     86A  GLN*     3.7    43.3    -      -       +      -
     87A  ALA*     4.3     9.0    -      -       +      -
    106A  MET*     4.0    19.3    -      -       +      -
    109A  SER*     3.8    11.4    -      -       -      -
    110A  TRP*     3.4    50.2    -      +       +      +
    113A  ALA*     5.1     1.1    -      -       +      -
    159A  SER*     5.3     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 25 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  THR*     3.4     8.8    +      -       +      +
     22A  LEU*     3.0    10.6    +      -       +      +
     24A  PHE*     1.3    76.9    -      -       -      +
     26A  VAL*     1.3    55.9    +      -       +      +
     28A  GLY*     3.2     2.5    +      -       -      -
     29A  PHE*     2.7    67.4    +      -       +      -
     80A  PHE*     6.3     0.2    -      -       +      -
     84A  PHE*     3.9    29.8    -      -       +      -
     87A  ALA*     4.2    14.6    -      -       +      -
    401A  LEU*     5.5     3.6    -      -       +      -
    404A  LEU*     3.8    27.4    -      -       +      -
    405A  LEU*     4.0    20.0    -      -       +      -
    408A  LEU*     4.0    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 26 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  LEU*     2.8    35.8    +      -       +      +
     23A  TYR*     4.2     9.0    -      -       +      +
     25A  LEU*     1.3    73.0    -      -       +      +
     27A  LEU*     1.3    61.9    +      -       +      +
     29A  PHE*     2.9     8.6    +      -       -      +
     30A  LEU*     2.8    40.6    +      -       +      +
    405A  LEU*     6.1     0.9    -      -       +      -
    488A  LEU*     6.0     1.1    -      -       +      -
    492A  LEU*     4.2    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 27 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  TYR      3.0    18.1    +      -       -      +
     24A  PHE      4.5     0.4    -      -       -      +
     26A  VAL*     1.3    76.2    -      -       +      +
     28A  GLY*     1.3    70.1    +      -       -      +
     29A  PHE      3.1     0.9    +      -       -      -
     30A  LEU*     3.1    24.5    +      -       +      +
     31A  ALA*     3.2    13.2    +      -       -      +
     83A  LEU*     3.5    31.2    -      -       +      -
    110A  TRP*     4.1    20.9    -      -       +      +
    113A  ALA*     4.9     1.8    -      -       +      -
    114A  PHE*     3.8    43.3    -      -       +      +
    117A  LEU*     4.6    20.9    -      -       +      -
    152A  PHE*     5.3     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 28 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  PHE      3.1    17.4    +      -       -      -
     25A  LEU*     3.2     5.8    +      -       -      -
     27A  LEU*     1.3    81.1    -      -       -      +
     29A  PHE*     1.3    59.2    +      -       -      +
     31A  ALA*     3.5     4.7    -      -       -      +
     32A  LEU      3.2    15.2    +      -       -      -
     80A  PHE*     3.6    24.9    -      -       -      +
     83A  LEU*     3.6    20.7    -      -       -      +
     84A  PHE*     5.3     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 29 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  LEU*     2.7    55.4    +      -       +      +
     26A  VAL*     2.9     6.8    +      -       -      +
     28A  GLY*     1.3    69.6    -      -       -      -
     30A  LEU*     1.3    65.9    +      -       -      +
     32A  LEU*     3.4    24.2    +      -       +      +
     33A  ILE*     3.1    29.0    +      -       -      +
     80A  PHE*     3.7    25.4    -      +       -      -
     84A  PHE*     5.1     0.4    -      +       -      -
    397A  ALA*     3.8    17.5    -      -       +      -
    398A  MET*     4.8     3.1    -      -       +      -
    401A  LEU*     3.1    35.9    -      -       +      -
    405A  LEU*     6.2     1.3    -      -       +      -
    484A  PHE*     4.1    14.6    -      +       -      -
    488A  LEU*     4.0    28.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 30 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  VAL*     2.8    29.9    +      -       +      +
     27A  LEU*     3.6    17.9    -      -       +      +
     29A  PHE*     1.3    69.3    -      -       -      +
     31A  ALA*     1.3    68.6    +      -       -      +
     33A  ILE*     3.0    21.2    +      -       +      +
     34A  VAL*     3.0    23.8    +      -       +      +
    488A  LEU*     5.8     2.2    -      -       +      -
    489A  PHE*     4.8    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 31 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  LEU      3.2     6.0    +      -       -      +
     28A  GLY      3.5     9.9    -      -       -      +
     30A  LEU*     1.3    79.0    -      -       -      +
     32A  LEU*     1.3    63.1    +      -       -      +
     34A  VAL*     3.5     4.6    +      -       -      -
     35A  GLY*     3.0    22.0    +      -       -      -
     75A  LEU*     3.7    22.2    -      -       +      +
     76A  ASN*     4.3     1.3    -      -       -      -
     79A  VAL*     3.7    34.5    -      -       +      -
     80A  PHE*     4.1     5.4    -      -       -      +
    117A  LEU*     5.3     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 32 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  GLY      3.2    10.8    +      -       -      +
     29A  PHE*     3.7    33.2    -      -       +      +
     30A  LEU      3.1     1.0    -      -       -      -
     31A  ALA*     1.3    77.6    -      -       -      +
     33A  ILE*     1.3    59.6    +      -       -      +
     36A  SER*     2.5    44.6    +      -       -      +
     76A  ASN*     3.1    11.5    +      -       -      +
     80A  PHE*     4.0    29.8    -      -       +      +
    394A  THR*     4.4    13.2    -      -       +      -
    398A  MET*     4.7     8.3    -      -       +      -
    428A  TRP*     5.4     2.2    -      -       +      -
    481A  LEU*     6.0     1.3    -      -       +      -
    484A  PHE*     4.4    17.5    -      -       +      -
    800A  HEM      3.6    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 33 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  PHE      3.1     9.6    +      -       -      +
     30A  LEU*     3.0    14.6    +      -       +      +
     32A  LEU*     1.3    75.4    -      -       -      +
     34A  VAL*     1.3    72.0    +      -       +      +
     35A  GLY      2.9     1.2    +      -       -      -
     36A  SER*     3.0    15.3    +      -       -      -
     37A  LEU*     3.1    20.4    +      -       +      +
    481A  LEU*     4.6     7.4    -      -       +      +
    484A  PHE*     4.1    15.3    -      -       +      -
    485A  ILE*     3.8    46.0    -      -       +      -
    488A  LEU*     3.7    27.4    -      -       +      -
    489A  PHE*     4.7     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 34 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  LEU*     3.0    23.9    +      -       +      +
     31A  ALA*     4.0     3.6    -      -       -      +
     33A  ILE*     1.3    79.3    -      -       +      +
     35A  GLY*     1.3    60.3    +      -       -      +
     37A  LEU*     3.5    23.6    -      -       +      +
     38A  PHE*     3.3    22.6    -      -       +      -
     61A  PHE*     5.9     7.6    -      -       +      -
     71A  LEU*     6.1     2.5    -      -       +      -
     75A  LEU*     4.1    15.3    -      -       +      -
    125A  LEU*     6.0     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 35 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  ALA      3.0    11.3    +      -       -      -
     34A  VAL*     1.3    76.7    -      -       -      +
     36A  SER*     1.3    61.5    +      -       -      +
     38A  PHE*     3.4    15.2    +      -       -      -
     71A  LEU      4.2     5.2    -      -       -      -
     72A  HIS*     2.9    20.3    +      -       -      -
     75A  LEU*     3.7    16.5    -      -       -      +
     76A  ASN*     3.5    20.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 36 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  LEU*     2.5    36.2    +      -       -      +
     33A  ILE      3.0     0.6    +      -       -      -
     35A  GLY*     1.3    71.3    -      -       -      +
     37A  LEU*     1.3    56.3    +      -       -      +
     38A  PHE      3.0     3.1    -      -       -      -
     39A  GLY*     2.7    21.7    +      -       -      -
     40A  PRO*     3.1    12.8    -      -       -      +
     72A  HIS*     4.2     5.4    -      -       -      -
     76A  ASN*     3.3    14.3    +      -       -      -
    428A  TRP*     4.3     5.3    -      -       -      -
    481A  LEU*     3.6    26.8    -      -       -      +
    800A  HEM      3.8    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 37 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  ILE*     3.1    23.0    +      -       +      +
     34A  VAL*     3.5    29.8    -      -       +      +
     35A  GLY      3.2     0.2    -      -       -      -
     36A  SER*     1.3    76.7    -      -       -      +
     38A  PHE*     1.3    64.0    +      -       +      +
     39A  GLY      3.5     0.2    +      -       -      -
     40A  PRO*     3.6     8.8    -      -       -      +
     41A  PHE*     3.2    28.4    -      -       +      -
     55A  LEU*     5.7     0.4    -      -       +      -
     59A  LEU*     4.3    24.9    -      -       +      -
    478A  LEU*     6.5     0.7    -      -       +      -
    481A  LEU*     4.1    17.9    -      -       +      +
    482A  LEU*     5.6     5.8    -      -       +      -
    485A  ILE*     5.4     6.1    -      -       +      -
----------------------------------------------------------
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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