Contacts of the helix formed by residues 49 - 76 (chain P) in PDB entry 5GSE


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 LEU 49 (chain P).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81J    C      5.1     4.7    -      -       -      +
    120O  MET*     5.7     0.7    -      -       +      -
    121O  PRO*     3.9    21.0    -      -       +      +
     47P  SER*     3.2    25.4    -      -       -      +
     48P  GLY*     1.3    74.3    -      -       -      +
     50P  ILE*     1.3    62.1    +      -       -      +
     51P  TYR      3.4     0.4    -      -       -      -
     52P  GLU*     4.0     7.3    +      -       -      +
     53P  GLU*     3.5    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 50 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104O  PHE*     4.4    15.0    -      -       +      -
    107O  THR*     5.2     1.6    -      -       +      -
    119O  ILE*     3.2    49.8    -      -       +      +
    120O  MET*     3.4     9.0    -      -       -      +
    121O  PRO*     3.5    25.5    -      -       +      +
    124O  ILE*     5.1     6.5    -      -       +      -
     34P  ILE*     5.0     2.9    -      -       +      -
     46P  ILE*     5.2     5.2    -      -       +      -
     47P  SER      3.5    13.4    +      -       -      +
     48P  GLY      3.1     1.2    -      -       -      -
     49P  LEU*     1.3    77.3    -      -       -      +
     51P  TYR*     1.3    64.3    +      -       +      +
     52P  GLU      3.1     0.4    -      -       -      -
     53P  GLU*     2.9     6.8    +      -       +      -
     54P  THR*     2.6    52.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 51 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82J    C      4.1     0.9    +      -       -      -
     31P  LYS*     3.5    53.3    -      -       +      -
     34P  ILE*     3.5    26.0    -      -       +      +
     35P  ARG*     2.5    40.8    +      -       +      -
     46P  ILE*     3.1    28.0    -      -       +      +
     47P  SER      4.0     3.1    -      -       -      -
     48P  GLY*     3.2    35.0    +      -       -      +
     49P  LEU      3.4     1.4    -      -       -      -
     50P  ILE*     1.3    80.9    -      -       +      +
     52P  GLU*     1.3    60.9    +      -       -      +
     54P  THR*     3.9     0.8    +      -       -      -
     55P  ARG*     3.3    46.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 52 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  ILE*     5.2     1.4    -      -       -      +
     27P  GLN*     3.4    23.4    +      -       -      +
     48P  GLY      4.7     1.0    +      -       -      -
     49P  LEU*     4.0     8.5    +      -       -      +
     50P  ILE      3.1     0.4    -      -       -      -
     51P  TYR*     1.3    77.4    -      -       -      +
     53P  GLU*     1.3    66.6    +      -       -      +
     55P  ARG*     2.5    53.4    +      -       -      +
     56P  GLY*     3.0    10.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 53 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121O  PRO*     4.2     9.7    -      -       +      +
    124O  ILE*     4.0    26.8    -      -       +      +
    125O  GLN*     3.1    34.2    -      -       -      +
    128O  ARG*     5.7     0.9    -      -       -      -
     49P  LEU      3.5    13.9    +      -       -      +
     50P  ILE*     2.9    13.1    +      -       +      +
     52P  GLU*     1.3    75.9    -      -       -      +
     54P  THR*     1.3    64.3    +      -       -      +
     56P  GLY*     3.0    13.5    +      -       -      +
     57P  VAL*     3.0    19.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 54 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100O  LEU*     3.7    31.2    -      -       +      -
    104O  PHE*     3.8    13.9    -      -       +      -
    124O  ILE*     4.8    11.3    -      -       +      +
     34P  ILE*     4.0    26.1    -      -       +      +
     50P  ILE*     2.6    40.2    +      -       -      +
     51P  TYR      4.0     4.3    -      -       -      -
     53P  GLU*     1.3    70.8    -      -       -      +
     55P  ARG*     1.3    53.2    +      -       -      +
     57P  VAL*     3.0     9.1    +      -       +      +
     58P  LEU*     2.7    34.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 55 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  ILE*     3.2    47.2    -      -       +      +
     27P  GLN*     3.0    24.5    +      -       -      +
     29P  ILE*     3.3    24.0    +      -       +      +
     31P  LYS*     4.1    19.8    -      -       -      +
     34P  ILE*     3.8    10.6    -      -       +      +
     51P  TYR*     3.3    30.7    +      -       -      +
     52P  GLU*     2.5    52.0    +      -       -      +
     54P  THR*     1.3    77.6    -      -       -      +
     56P  GLY*     1.3    62.3    -      -       -      +
     58P  LEU*     3.0     8.5    +      -       -      +
     59P  LYS*     2.8    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 56 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  ILE*     5.6     0.4    -      -       -      -
     52P  GLU*     3.0     8.2    +      -       -      -
     53P  GLU*     3.0     8.4    +      -       -      -
     55P  ARG*     1.3    78.0    -      -       -      +
     57P  VAL*     1.3    64.9    +      -       -      +
     59P  LYS*     3.0    15.1    +      -       -      +
     60P  VAL*     3.2    13.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 57 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99O  TYR*     3.5    34.8    -      -       +      +
    100O  LEU*     4.7     4.0    -      -       +      -
    103O  LEU*     3.8    11.2    -      -       +      -
    124O  ILE*     3.9    20.0    -      -       +      -
    128O  ARG*     3.6    32.5    -      -       -      +
     53P  GLU*     3.0    16.7    +      -       -      +
     54P  THR*     3.0    10.6    +      -       -      +
     56P  GLY*     1.3    71.5    -      -       -      +
     58P  LEU*     1.3    67.7    +      -       -      +
     60P  VAL*     2.9    27.1    -      -       -      +
     61P  PHE*     3.1     5.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 58 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62O  ILE*     5.3     5.4    -      -       +      -
     67O  PHE*     5.3     0.9    -      -       +      -
     70O  LEU*     4.4    12.6    -      -       +      -
     96O  CYS*     3.6    37.7    -      -       +      +
     99O  TYR*     5.4     1.1    -      -       +      -
    100O  LEU*     4.1    29.4    -      -       +      -
     26P  ILE*     4.6     2.9    -      -       +      -
     29P  ILE*     3.8    41.3    -      -       +      -
     54P  THR*     2.7    17.1    +      -       +      +
     55P  ARG*     3.0     9.6    +      -       -      +
     57P  VAL*     1.3    76.3    -      -       -      +
     59P  LYS*     1.3    66.2    -      -       -      +
     61P  PHE*     3.0     8.7    +      -       +      +
     62P  LEU*     2.8    24.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 59 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70O  LEU*     4.8     1.5    -      -       +      +
     73O  GLU*     5.5     4.8    +      -       -      +
     74O  ILE*     3.9    25.6    -      -       +      +
     77O  ASP*     5.4     3.0    +      -       -      -
     26P  ILE*     3.6    40.6    -      -       +      -
     55P  ARG      2.8    12.6    +      -       -      +
     56P  GLY*     3.4    11.2    -      -       -      +
     58P  LEU*     1.3    74.1    -      -       -      +
     60P  VAL*     1.3    52.7    +      -       -      +
     62P  LEU*     3.0     5.5    +      -       -      +
     63P  GLU*     2.6    76.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 60 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128O  ARG*     4.3    16.4    -      -       -      +
     56P  GLY      3.2     8.8    +      -       -      +
     57P  VAL*     2.9    24.2    -      -       +      +
     59P  LYS*     1.3    77.9    -      -       -      +
     61P  PHE*     1.3    67.2    +      -       +      +
     63P  GLU*     3.0    18.1    +      -       -      +
     64P  ASN*     3.0    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 61 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92O  LEU*     6.5     0.2    -      -       +      -
     95O  ALA*     4.3     9.9    -      -       +      -
     96O  CYS*     3.9    35.0    -      -       -      -
     99O  TYR*     3.5    61.2    -      +       +      +
     57P  VAL      3.1    10.8    +      -       -      +
     58P  LEU*     3.0     9.2    +      -       +      +
     60P  VAL*     1.3    81.2    -      -       -      +
     62P  LEU*     1.3    66.6    +      -       +      +
     64P  ASN*     3.0    14.8    +      -       -      +
     65P  VAL*     3.0    40.2    +      -       +      +
     90P  LEU*     4.6     5.4    -      -       +      -
     93P  GLN*     4.8     5.3    -      -       -      +
     95P  ARG*     3.7    24.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 62 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67O  PHE*     3.7    31.4    -      -       +      -
     70O  LEU*     4.0    19.3    -      -       +      -
     71O  VAL*     4.0    10.3    -      -       +      -
     74O  ILE*     3.9    16.6    -      -       +      -
     92O  LEU*     4.2    19.1    -      -       +      -
     96O  CYS*     3.5    21.1    -      -       -      -
     58P  LEU*     2.8    18.3    +      -       +      +
     59P  LYS      3.5     5.6    -      -       -      +
     61P  PHE*     1.3    76.2    -      -       +      +
     63P  GLU*     1.3    64.2    +      -       -      +
     64P  ASN      3.0     0.3    +      -       -      -
     65P  VAL*     3.0     4.6    +      -       +      +
     66P  ILE*     2.9    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 63 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74O  ILE*     3.7    26.4    -      -       +      +
     77O  ASP*     4.9     7.5    -      -       -      +
     78O  PHE*     3.6    15.1    -      -       +      -
     59P  LYS*     2.6    50.5    +      -       -      +
     60P  VAL*     3.4    24.4    +      -       -      +
     62P  LEU*     1.3    72.8    -      -       -      +
     64P  ASN*     1.3    61.6    +      -       -      +
     67P  ARG*     3.1    36.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 64 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60P  VAL*     3.0    34.2    +      -       -      +
     61P  PHE*     3.0     7.5    +      -       -      +
     63P  GLU*     1.3    76.9    -      -       -      +
     65P  VAL*     1.3    67.4    +      -       -      +
     67P  ARG*     2.7    41.1    +      -       +      +
     68P  ASP*     2.9    26.8    +      -       -      +
     93P  GLN*     3.4    19.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 65 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92O  LEU*     3.5    26.5    -      -       +      -
     95O  ALA*     5.7     0.7    -      -       +      -
     61P  PHE*     3.0    40.7    +      -       +      +
     62P  LEU*     3.0     7.5    +      -       +      +
     64P  ASN*     1.3    74.5    -      -       -      +
     66P  ILE*     1.3    63.4    +      -       -      +
     68P  ASP*     4.7     1.3    -      -       -      -
     69P  ALA*     3.0    22.5    +      -       -      +
     86P  VAL*     4.6     2.2    -      -       +      -
     89P  ALA*     3.6    11.0    -      -       +      +
     90P  LEU*     3.5    35.7    -      -       +      -
     93P  GLN*     3.9    17.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 66 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71O  VAL*     3.7    38.4    -      -       +      +
     74O  ILE*     3.9    19.1    -      -       +      -
     75O  ALA*     3.9    25.6    -      -       +      +
     78O  PHE*     4.3    11.0    -      -       +      -
     84O  PHE*     4.9     5.2    -      -       +      -
     92O  LEU*     4.0    19.3    -      -       +      -
     62P  LEU*     2.9    30.6    +      -       +      +
     63P  GLU      4.3     2.2    -      -       -      +
     65P  VAL*     1.3    76.0    -      -       -      +
     67P  ARG*     1.3    64.2    +      -       -      +
     69P  ALA*     3.0     9.3    +      -       +      +
     70P  VAL*     2.8    28.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 67 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78O  PHE*     3.3    51.9    -      -       +      +
     63P  GLU*     3.1    23.6    +      -       -      +
     64P  ASN*     2.7    53.6    +      -       +      +
     66P  ILE*     1.3    75.0    -      -       -      +
     68P  ASP*     1.3    75.2    +      -       -      +
     70P  VAL*     3.0    14.3    +      -       -      +
     71P  THR*     3.3    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 68 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64P  ASN*     2.9    15.7    +      -       -      +
     65P  VAL      3.7     0.7    -      -       -      +
     67P  ARG*     1.3    82.1    -      -       -      +
     69P  ALA*     1.3    65.4    +      -       -      +
     71P  THR*     2.5    29.1    +      -       -      +
     72P  TYR*     3.2     9.1    +      -       +      -
     89P  ALA*     3.5    23.1    -      -       +      +
     92P  ARG*     5.1     8.6    -      -       -      +
     93P  GLN*     3.3    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 69 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92O  LEU*     5.8     0.9    -      -       +      -
     65P  VAL      3.0    14.6    +      -       -      +
     66P  ILE*     3.0    14.2    +      -       +      +
     68P  ASP*     1.3    74.8    -      -       -      +
     70P  VAL*     1.3    65.6    +      -       +      +
     72P  TYR*     2.9     7.9    +      -       -      +
     73P  THR*     2.8    24.1    +      -       -      +
     81P  VAL*     5.2     7.2    -      -       +      -
     85P  ASP*     3.7    33.9    -      -       +      +
     86P  VAL*     4.3    11.7    -      -       +      +
     89P  ALA*     3.6     1.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 70 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75O  ALA*     5.4     0.4    -      -       +      +
     78O  PHE*     4.4    20.6    -      -       +      -
     79O  LYS*     4.7     2.5    -      -       +      -
     82O  LEU*     3.5    33.4    -      -       +      -
     84O  PHE*     5.9     0.7    -      -       +      -
     66P  ILE*     2.8    28.1    +      -       +      +
     67P  ARG*     3.0    10.0    +      -       -      +
     69P  ALA*     1.3    75.7    -      -       +      +
     71P  THR*     1.3    56.6    +      -       +      +
     73P  THR*     3.0     8.2    +      -       -      -
     74P  GLU*     2.5    63.2    +      -       +      +
     81P  VAL*     4.4     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 71 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67P  ARG*     3.6    12.8    -      -       +      +
     68P  ASP*     2.5    24.3    +      -       -      +
     70P  VAL*     1.3    79.5    -      -       +      +
     72P  TYR*     1.3    59.9    +      -       -      +
     74P  GLU*     3.7    15.8    -      -       -      +
     75P  HIS*     2.8    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 72 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68P  ASP*     3.9    12.8    -      -       +      -
     69P  ALA      2.9     6.9    +      -       -      +
     71P  THR*     1.3    84.8    +      -       -      +
     73P  THR*     1.3    62.8    +      -       -      +
     75P  HIS*     3.0    13.4    +      +       +      +
     76P  ALA*     2.9    22.3    +      -       -      +
     85P  ASP*     3.9    21.3    -      -       +      +
     88P  TYR*     3.5    52.0    +      +       +      +
     89P  ALA*     3.9    10.8    -      -       -      -
     92P  ARG*     4.6    20.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 73 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82O  LEU*     5.0     4.3    -      -       +      -
     69P  ALA      2.8    12.6    +      -       -      -
     70P  VAL*     3.4     7.0    -      -       -      -
     72P  TYR*     1.3    73.6    -      -       -      +
     74P  GLU*     1.3    64.9    +      -       +      +
     76P  ALA*     2.9    15.4    +      -       -      +
     77P  LYS      2.9     8.8    +      -       -      -
     78P  ARG*     3.5    25.0    +      -       +      +
     79P  LYS      4.9     1.3    -      -       -      -
     80P  THR      3.5    26.0    -      -       -      +
     81P  VAL*     3.2    28.8    -      -       +      +
     85P  ASP*     2.1    32.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 74 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78O  PHE      4.3     2.9    -      -       -      +
     79O  LYS*     3.3    42.8    -      -       +      +
     82O  LEU*     6.2     1.1    -      -       +      -
     70P  VAL*     2.5    37.1    +      -       +      +
     71P  THR*     3.9    16.3    -      -       -      +
     73P  THR*     1.3    74.8    -      -       +      +
     75P  HIS*     1.3    61.6    +      -       -      +
     77P  LYS*     3.1    20.1    +      -       -      +
     78P  ARG      5.0     4.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 75 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113G  ALA*     5.9     7.4    -      -       +      -
     71P  THR      2.8    19.4    +      -       -      +
     72P  TYR*     3.0    15.2    +      +       +      +
     74P  GLU*     1.3    73.8    -      -       -      +
     76P  ALA*     1.3    60.9    +      -       +      +
     77P  LYS*     3.0    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 76 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72P  TYR      2.9     9.7    +      -       -      +
     73P  THR      2.9     4.2    +      -       -      +
     75P  HIS*     1.3    76.9    -      -       +      +
     77P  LYS*     1.3    70.1    +      -       -      +
     78P  ARG*     3.2    45.2    +      -       -      +
     85P  ASP*     5.6     0.2    -      -       -      +
----------------------------------------------------------
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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