Contacts of the helix formed by residues 112 - 135 (chain G) in PDB entry 4PKN


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 ASN 112 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PRO      5.1     1.0    +      -       -      -
     34A  LYS*     3.2    45.4    -      -       +      +
     35A  GLY      5.3     0.2    -      -       -      +
     36A  ARG*     4.8     2.1    +      -       -      +
    110G  GLY      3.8     1.4    +      -       -      -
    111G  MET*     1.3    73.0    -      -       -      +
    113G  PRO*     1.3    77.0    -      -       -      +
    114G  MET*     3.5    11.9    +      -       -      +
    115G  ASP*     3.1    35.3    +      -       +      +
    116G  LEU*     3.1    21.6    +      -       -      +
    118G  ARG*     4.8     2.6    -      -       -      +
    435G  ASP*     3.5    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 113 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ARG*     3.3    47.8    -      -       +      +
     13G  ARG*     5.6     0.7    -      -       -      +
    107G  VAL*     4.1    11.9    -      -       +      -
    111G  MET      3.2     9.4    -      -       -      +
    112G  ASN*     1.3    91.8    -      -       -      +
    114G  MET*     1.3    58.0    +      -       -      +
    116G  LEU*     2.8    31.8    +      -       +      +
    117G  LYS*     3.0    11.8    +      -       -      +
    515G  ILE*     3.5    24.7    -      -       +      +
    516G  THR*     3.9    17.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 114 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PRO      4.9     5.4    -      -       -      +
     35A  GLY      4.4    17.0    -      -       -      +
     36A  ARG*     5.9     2.9    -      -       +      -
     37A  ASN*     4.4    12.1    -      -       -      +
     51A  LYS*     5.7     3.1    -      -       +      -
    153A  ASN*     3.7    26.0    -      -       -      +
    391A  GLU*     4.9     8.3    -      -       -      +
    395A  ARG*     4.8    16.8    -      -       -      +
    112G  ASN*     3.3    11.4    +      -       -      +
    113G  PRO*     1.3    79.4    -      -       -      +
    115G  ASP*     1.3    58.8    +      -       -      +
    117G  LYS*     3.7    22.6    +      -       +      +
    118G  ARG*     3.3    48.1    +      -       +      +
    513G  LEU*     6.0     1.1    -      -       +      -
    516G  THR*     4.3    21.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 115 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  LYS*     4.6     7.3    -      -       -      -
    112G  ASN*     3.1    31.3    +      -       -      +
    113G  PRO      3.1     0.4    -      -       -      -
    114G  MET*     1.3    78.3    -      -       -      +
    116G  LEU*     1.3    64.3    +      -       -      +
    117G  LYS      3.2     0.7    -      -       -      -
    118G  ARG*     3.1    19.4    +      -       -      +
    119G  GLY      3.0    18.5    +      -       -      -
    433G  ASN*     3.5    21.5    +      -       -      +
    435G  ASP*     3.8    16.1    -      -       +      +
    436G  GLN*     3.0    37.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 116 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103G  GLY*     4.0     4.5    -      -       -      +
    106G  ALA*     3.9    17.9    -      -       +      -
    107G  VAL*     3.7    31.6    -      -       +      +
    111G  MET*     4.4    11.9    -      -       +      -
    112G  ASN      3.1    15.4    +      -       -      +
    113G  PRO*     2.8     9.0    +      -       +      +
    115G  ASP*     1.3    73.1    -      -       -      +
    117G  LYS*     1.3    66.4    +      -       -      +
    119G  GLY      3.2     1.0    +      -       -      -
    120G  ILE*     2.9    30.7    +      -       +      +
    435G  ASP*     3.4    24.2    -      -       -      +
    438G  VAL*     3.9    16.8    -      -       +      -
    439G  GLY*     3.5    20.0    -      -       -      +
    442G  VAL*     5.2     2.9    -      -       +      -
    515G  ILE*     3.9    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 117 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388A  GLU*     3.9    18.6    +      -       -      -
    391A  GLU*     6.2     0.4    -      -       -      -
    395A  ARG*     5.8     4.7    -      -       -      +
    113G  PRO      3.0    10.8    +      -       -      +
    114G  MET*     3.7    31.9    -      -       +      +
    116G  LEU*     1.3    77.6    -      -       -      +
    118G  ARG*     1.3    58.6    +      -       +      +
    120G  ILE*     3.3     8.8    +      -       -      +
    121G  ASP*     2.9    60.4    +      -       -      +
    509G  SER*     4.1     8.3    +      -       -      +
    512G  GLY*     3.7    27.3    -      -       -      +
    513G  LEU*     4.0    36.2    -      -       +      +
    515G  ILE*     4.4     1.2    -      -       -      +
    516G  THR*     4.5     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 118 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PRO      5.2     5.5    +      -       -      -
    153A  ASN*     3.8    23.8    +      -       -      +
    154A  SER*     4.3    14.5    +      -       -      -
    112G  ASN*     4.8     2.0    -      -       -      +
    114G  MET*     3.3    53.6    +      -       +      +
    115G  ASP*     3.1    33.2    +      -       -      +
    117G  LYS*     1.3    79.5    -      -       +      +
    119G  GLY*     1.3    62.2    +      -       -      +
    121G  ASP*     3.9     5.9    -      -       -      +
    122G  LYS*     3.0    25.8    +      -       -      +
    432G  GLN*     5.6     0.9    -      -       -      -
    436G  GLN*     3.6    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 119 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115G  ASP      3.0    12.0    +      -       -      -
    116G  LEU      3.2     2.4    +      -       -      -
    118G  ARG*     1.3    76.5    -      -       -      +
    120G  ILE*     1.3    64.1    +      -       -      +
    122G  LYS*     3.3     4.5    +      -       -      +
    123G  ALA*     3.0    20.1    +      -       -      +
    436G  GLN*     3.3    31.1    -      -       -      +
    440G  ILE*     3.3    20.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 120 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99G  ILE*     3.7    31.6    -      -       +      -
    116G  LEU*     2.9    21.7    +      -       +      +
    117G  LYS*     3.6     4.0    -      -       -      +
    119G  GLY*     1.3    76.1    -      -       -      +
    121G  ASP*     1.3    67.9    +      -       -      +
    123G  ALA*     3.1     4.2    +      -       -      +
    124G  VAL*     2.9    22.5    +      -       -      +
    439G  GLY*     3.4    22.1    -      -       -      +
    442G  VAL*     4.3    12.3    -      -       +      -
    443G  ALA*     4.3    14.8    -      -       +      -
    508G  ALA*     4.2    26.7    -      -       +      +
    512G  GLY*     4.7     7.4    -      -       -      -
    515G  ILE*     4.0    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 121 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388A  GLU*     4.8     4.4    -      -       -      +
    117G  LYS*     2.9    61.9    +      -       -      +
    118G  ARG*     3.9     6.2    -      -       -      +
    120G  ILE*     1.3    76.6    -      -       -      +
    122G  LYS*     1.3    53.2    +      -       -      +
    124G  VAL*     3.5     7.2    +      -       -      +
    125G  THR*     2.6    39.1    +      -       -      +
    508G  ALA*     4.0    16.8    -      -       -      +
    509G  SER*     5.1     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 122 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118G  ARG      3.0    18.3    +      -       -      +
    119G  GLY*     3.6     6.3    -      -       -      +
    121G  ASP*     1.3    75.4    -      -       -      +
    123G  ALA*     1.3    65.7    +      -       -      +
    125G  THR*     3.3     7.7    +      -       -      -
    126G  ALA*     3.0    23.4    +      -       +      +
    429G  LEU*     4.0    21.1    -      -       +      +
    430G  ARG      2.9    28.6    +      -       -      +
    431G  GLY*     4.0    10.6    -      -       -      -
    432G  GLN*     6.3     0.4    -      -       -      +
    436G  GLN*     5.8     1.8    -      -       -      +
    440G  ILE*     4.6     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 123 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119G  GLY      3.0    17.1    +      -       -      +
    120G  ILE      3.6     3.8    -      -       -      +
    122G  LYS*     1.3    75.5    -      -       -      +
    124G  VAL*     1.3    57.8    +      -       -      +
    126G  ALA*     3.3     1.4    +      -       -      +
    127G  ALA*     2.9    28.4    +      -       -      +
    426G  LEU*     3.5     6.8    -      -       -      +
    429G  LEU*     4.0    12.8    -      -       -      +
    440G  ILE*     3.7    24.9    -      -       +      +
    443G  ALA*     3.9    19.5    -      -       +      -
    444G  LEU*     4.3     9.9    -      -       +      -
    447G  MET*     6.1     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 124 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99G  ILE*     5.5     0.7    -      -       +      -
    120G  ILE*     2.9    21.6    +      -       +      +
    121G  ASP*     3.7     6.7    -      -       -      +
    123G  ALA*     1.3    73.2    -      -       -      +
    125G  THR*     1.3    69.9    +      -       -      +
    127G  ALA*     2.9    14.8    +      -       -      +
    128G  VAL*     3.0    19.1    +      -       +      +
    443G  ALA*     4.7     9.0    -      -       +      -
    447G  MET*     5.8     1.6    -      -       +      -
    504G  LEU*     3.5    33.2    -      -       +      -
    505G  GLN*     4.4    14.1    -      -       +      +
    508G  ALA*     3.3    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 125 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121G  ASP*     2.6    26.0    +      -       -      +
    122G  LYS*     3.6     8.3    -      -       -      -
    124G  VAL*     1.3    78.4    -      -       -      +
    126G  ALA*     1.3    61.8    -      -       -      +
    128G  VAL*     3.6    13.5    +      -       -      +
    129G  GLU*     3.7    18.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 126 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122G  LYS*     3.0    13.4    +      -       +      +
    123G  ALA      3.6     8.5    -      -       -      +
    125G  THR*     1.3    77.0    -      -       -      +
    127G  ALA*     1.3    63.9    +      -       -      +
    129G  GLU*     3.0    12.7    +      -       -      +
    130G  GLU*     3.0    22.2    +      -       -      +
    426G  LEU*     4.0    18.8    -      -       +      -
    429G  LEU*     4.1    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 127 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123G  ALA      2.9    16.3    +      -       -      +
    124G  VAL*     2.9     9.5    +      -       -      +
    126G  ALA*     1.3    76.4    -      -       -      +
    128G  VAL*     1.3    58.0    +      -       -      +
    130G  GLU*     3.3     3.4    +      -       -      +
    131G  LEU*     2.9    33.9    +      -       +      +
    419G  LEU*     5.9     0.4    -      -       +      -
    422G  VAL*     3.7    13.4    -      -       +      +
    426G  LEU*     3.8     9.6    -      -       +      +
    447G  MET*     3.5    31.6    -      -       +      -
    504G  LEU*     4.4     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 128 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124G  VAL*     3.0    22.3    +      -       +      +
    125G  THR*     3.8     9.6    -      -       -      +
    126G  ALA      3.2     0.2    -      -       -      -
    127G  ALA*     1.3    76.5    -      -       -      +
    129G  GLU*     1.3    62.2    +      -       -      +
    131G  LEU*     3.3     9.6    +      -       +      +
    132G  LYS*     2.9    45.5    +      -       -      +
    501G  ARG*     3.6    27.6    -      -       +      +
    504G  LEU*     4.9     4.7    -      -       +      -
    505G  GLN*     3.5    37.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 129 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125G  THR*     3.7    16.4    -      -       +      +
    126G  ALA*     3.0    10.5    +      -       -      +
    128G  VAL*     1.3    85.7    -      -       -      +
    130G  GLU*     1.3    66.2    +      -       +      +
    132G  LYS*     3.1    22.9    +      -       -      +
    133G  ALA*     2.9    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 130 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126G  ALA      3.0    14.9    +      -       -      +
    127G  ALA      3.3     4.2    +      -       -      +
    129G  GLU*     1.3    76.5    -      -       +      +
    131G  LEU*     1.3    57.4    +      -       -      +
    133G  ALA*     3.1    13.1    -      -       -      +
    134G  LEU*     3.0    32.7    +      -       +      +
    422G  VAL*     3.7    26.0    -      -       +      -
    425G  LYS*     3.2    39.5    +      -       +      +
    426G  LEU*     4.1    21.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 131 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127G  ALA      2.9    16.8    +      -       -      +
    128G  VAL*     3.4    11.7    -      -       +      +
    129G  GLU      3.1     0.2    -      -       -      -
    130G  GLU*     1.3    72.5    -      -       -      +
    132G  LYS*     1.3    62.9    +      -       -      +
    133G  ALA      2.9     4.6    +      -       -      -
    134G  LEU*     3.0     5.4    +      -       +      +
    135G  SER*     3.0    22.3    +      -       -      -
    412G  VAL*     4.4    15.4    -      -       +      +
    418G  ALA*     4.3    16.2    -      -       +      -
    419G  LEU*     4.2    11.0    -      -       +      -
    422G  VAL*     3.9    20.6    -      -       +      -
    497G  THR*     4.2    11.8    -      -       +      +
    500G  THR*     3.6    32.3    -      -       +      -
    501G  ARG*     3.7    27.8    -      -       +      +
    504G  LEU*     5.5     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 132 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128G  VAL*     2.9    33.9    +      -       +      +
    129G  GLU*     3.1    26.0    +      -       -      +
    131G  LEU*     1.3    75.9    -      -       +      +
    133G  ALA*     1.3    60.5    +      -       -      +
    135G  SER*     3.7    18.3    +      -       -      +
    409G  GLU*     4.0    22.3    +      -       +      +
    497G  THR*     4.9     6.3    -      -       +      +
    501G  ARG*     4.4    13.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 133 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129G  GLU      2.9    12.6    +      -       -      +
    130G  GLU*     3.1    24.2    -      -       -      +
    131G  LEU      2.9     0.2    -      -       -      -
    132G  LYS*     1.3    78.3    -      -       -      +
    134G  LEU*     1.3    66.7    +      -       +      +
    135G  SER      3.2     5.9    +      -       -      +
    425G  LYS*     5.3     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 134 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130G  GLU*     3.0    25.6    +      -       -      +
    131G  LEU*     3.0     6.7    +      -       +      +
    133G  ALA*     1.3    76.5    -      -       -      +
    135G  SER*     1.3    63.5    +      -       -      +
    136G  VAL*     3.3     8.3    +      -       -      +
    411G  VAL      4.2     3.3    -      -       -      +
    412G  VAL*     3.7    29.3    -      -       +      +
    413G  ALA*     5.5     1.6    -      -       +      +
    418G  ALA*     4.7     7.4    -      -       -      +
    421G  ARG*     4.5    26.0    -      -       +      -
    422G  VAL*     4.8     8.3    -      -       +      -
    425G  LYS*     3.3    34.3    -      -       +      +
    474G  GLY*     5.7     2.0    -      -       -      +
    475G  ASN*     5.1     9.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 135 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131G  LEU      3.0    14.1    +      -       -      -
    132G  LYS*     3.8    13.2    -      -       -      +
    133G  ALA      3.1     7.8    -      -       -      +
    134G  LEU*     1.3    77.9    -      -       -      +
    136G  VAL*     1.3    61.7    +      -       -      +
    137G  PRO*     4.5     2.6    -      -       -      +
    409G  GLU      3.1    18.4    +      -       -      -
    410G  GLY*     3.6     6.1    -      -       -      -
    411G  VAL      3.4     8.3    -      -       -      -
    412G  VAL*     4.7     0.9    -      -       -      +
    497G  THR*     3.1    28.6    +      -       -      -
----------------------------------------------------------
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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