Contacts of the helix formed by residues 82 - 105 (chain A) in PDB entry 4B8Z


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 82 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  MET*     4.5     4.0    -      -       +      -
     78A  ARG*     3.0    50.6    +      -       +      +
     79A  ASN      3.5     0.6    +      -       -      -
     81A  LYS*     1.4   105.4    -      -       +      +
     83A  ASN*     1.3    56.9    +      -       -      +
     84A  LEU      3.3     2.9    -      -       -      -
     85A  ASP*     3.3    22.7    +      -       +      +
     86A  PHE*     3.0    36.3    +      +       +      -
    184A  ASP*     4.8     5.1    +      -       -      -
    160C  GLN*     3.3    16.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  ASN*     3.2    15.8    +      -       -      +
     80A  ILE*     4.5     6.5    +      -       -      +
     81A  LYS      3.9     1.2    -      -       -      -
     82A  TYR*     1.3    75.0    -      -       -      +
     84A  LEU*     1.4    56.2    +      -       -      +
     86A  PHE*     3.9     3.7    -      -       -      +
     87A  TRP*     3.1    28.1    +      -       -      +
    138A  ASN      3.8     2.0    +      -       -      -
    139A  SER      2.9    21.4    +      -       -      -
    140A  ASN*     3.4    14.2    -      -       -      -
    141A  PHE*     3.5    40.5    -      -       +      -
    142A  GLY*     3.1    24.3    +      -       -      +
    143A  TYR      4.2     1.9    +      -       -      -
    156C  ALA*     4.5     4.3    -      -       +      +
    159C  GLN*     5.2     0.8    +      -       -      -
    160C  GLN*     3.1     4.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ASN*     1.4    70.1    -      -       -      +
     85A  ASP*     1.4    59.8    +      -       -      +
     87A  TRP*     3.3     9.1    +      -       +      +
     88A  ARG*     2.8    59.0    +      -       +      +
     99C  HIS*     4.7     7.0    -      -       +      -
    102C  PHE*     5.6     0.7    -      -       +      -
    153C  GLN*     4.6     0.9    -      -       -      +
    156C  ALA*     3.7    33.6    +      -       +      +
    157C  TYR*     3.9    46.9    -      -       +      -
    160C  GLN*     2.8    24.1    +      -       -      +
    161C  TYR*     4.1    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  MET*     3.6    22.0    -      -       +      -
     82A  TYR*     3.3    16.5    +      -       +      +
     84A  LEU*     1.4    78.7    -      -       -      +
     86A  PHE*     1.4    58.0    +      -       -      +
     88A  ARG*     4.8     2.5    -      -       -      -
     89A  LYS*     3.0    45.6    +      -       +      +
    160C  GLN*     2.9    29.1    +      -       -      -
    161C  TYR*     4.2     7.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  MET*     3.3    54.3    -      -       +      -
     73A  VAL*     4.0     1.1    -      -       -      -
     74A  GLY      3.5    18.2    -      -       -      -
     78A  ARG*     3.6    39.3    -      -       +      -
     79A  ASN*     3.3    39.5    -      -       -      +
     82A  TYR*     3.0    30.9    +      -       +      +
     83A  ASN*     4.0     5.4    -      -       -      +
     85A  ASP*     1.4    75.2    -      -       -      +
     87A  TRP*     1.3    55.9    +      -       -      +
     90A  ASN*     2.7    35.0    +      -       -      +
    142A  GLY      4.2     2.2    -      -       -      -
    143A  TYR*     3.7    25.7    -      +       +      +
    146A  ALA*     4.0     1.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ASN      3.1    19.1    +      -       -      +
     84A  LEU*     3.6    13.9    -      -       +      +
     85A  ASP      3.2     0.2    -      -       -      -
     86A  PHE*     1.3    76.7    -      -       -      +
     88A  ARG*     1.4    83.6    +      -       +      +
     91A  VAL*     3.1    67.5    +      -       +      +
    142A  GLY*     3.6    19.9    -      -       -      +
    145A  TYR*     3.7    13.2    -      -       +      -
    146A  ALA*     3.6    29.0    -      -       -      +
    149A  MET*     4.2     5.2    -      -       +      -
     87C  TRP*     5.2     2.5    -      +       -      -
     91C  VAL*     5.9     4.0    -      -       +      -
     95C  ASP*     5.3     2.8    +      -       -      -
    149C  MET*     3.4    51.6    -      -       +      -
    152C  VAL*     4.3    10.3    -      -       +      -
    153C  GLN*     4.2    19.8    -      -       +      +
    156C  ALA*     5.3     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     2.8    32.5    +      -       +      +
     85A  ASP*     4.4     2.7    -      -       -      +
     87A  TRP*     1.4    84.8    -      -       +      +
     89A  LYS*     1.4    64.1    +      -       +      +
     91A  VAL*     3.4     2.8    +      -       -      +
     92A  HIS*     2.7    50.0    +      -       +      -
     95C  ASP*     2.8    43.6    +      -       -      +
     99C  HIS*     3.3    57.3    +      -       -      +
    157C  TYR*     3.7    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  THR*     3.7    16.9    -      -       +      +
     72A  MET*     4.4    15.0    -      -       +      -
     85A  ASP*     3.0    35.5    +      -       +      +
     88A  ARG*     1.4    73.8    -      -       +      +
     90A  ASN*     1.4    59.5    +      -       -      +
     92A  HIS*     3.7     2.8    +      -       -      +
     93A  MET*     3.2    41.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ALA*     3.5    11.9    -      -       -      +
     72A  MET*     2.6    48.7    +      -       -      +
     86A  PHE*     2.7    25.2    +      -       -      +
     87A  TRP      3.7     0.8    +      -       -      -
     88A  ARG      3.3     0.8    -      -       -      -
     89A  LYS*     1.4    73.7    -      -       -      +
     91A  VAL*     1.4    55.2    +      -       -      +
     93A  MET*     3.2     5.8    +      -       -      +
     94A  ASN*     2.8    47.3    +      -       -      +
    143A  TYR*     3.5    23.2    -      -       -      +
    146A  ALA*     3.7    12.9    -      -       +      +
    147A  LYS*     4.7     4.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  TRP*     3.1    65.0    +      -       +      +
     88A  ARG*     3.9     3.6    -      -       -      +
     90A  ASN*     1.4    74.4    -      -       -      +
     92A  HIS*     1.3    63.2    +      -       +      +
     94A  ASN*     3.9     6.0    -      -       -      +
     95A  ASP*     3.0    33.4    +      -       +      +
    146A  ALA*     4.0    11.7    -      -       +      +
    149A  MET*     5.3     4.7    -      -       +      -
     87C  TRP*     5.8     4.7    -      -       +      -
     91C  VAL*     4.2    25.1    -      -       +      -
     95C  ASP*     6.2     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  THR*     4.0    29.1    -      -       -      +
     88A  ARG*     2.7    56.3    +      -       +      +
     89A  LYS*     3.8     6.5    +      -       -      +
     91A  VAL*     1.3    79.1    -      -       +      +
     93A  MET*     1.4    57.2    +      -       -      +
     95A  ASP*     3.5     3.3    +      -       -      +
     96A  ASN*     3.0    39.5    +      -       -      -
     51C  THR*     6.4     0.2    -      -       -      +
     92C  HIS*     6.3     2.9    -      +       -      -
     95C  ASP*     2.9    33.5    +      -       -      +
     96C  ASN*     5.7     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  LEU*     3.4    30.7    -      -       +      -
     49A  THR*     3.8     6.1    -      -       +      -
     68A  HIS*     4.3     2.5    -      -       +      -
     70A  ALA*     3.9    27.4    -      -       -      +
     71A  ALA*     3.9     1.1    -      -       -      -
     72A  MET*     3.7    26.2    -      -       +      +
     89A  LYS*     3.2    37.5    +      -       +      +
     90A  ASN*     3.6     6.7    -      -       -      +
     92A  HIS*     1.4    77.1    -      -       -      +
     94A  ASN*     1.3    58.6    +      -       -      +
     96A  ASN*     3.6     0.7    +      -       -      +
     97A  VAL*     3.1    35.7    +      -       -      +
    900A  NAP      3.6    38.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  HIS*     2.8    31.4    +      -       +      +
     70A  ALA      4.4     4.0    -      -       -      +
     71A  ALA*     5.6     0.9    -      -       -      +
     90A  ASN*     2.8    34.6    +      -       -      +
     91A  VAL*     3.9     5.4    -      -       -      +
     93A  MET*     1.3    71.4    -      -       -      +
     95A  ASP*     1.3    57.9    +      -       -      +
     97A  VAL*     4.0     0.7    -      -       -      +
     98A  LEU*     2.9    41.4    +      -       +      +
    146A  ALA      3.4    25.1    +      -       -      -
    147A  LYS*     4.9     5.5    +      -       -      +
    150A  ILE*     3.5    32.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  VAL*     3.0    22.1    +      -       +      +
     92A  HIS*     4.0     4.0    -      -       -      +
     94A  ASN*     1.3    76.7    -      -       -      +
     96A  ASN*     1.3    64.1    +      -       -      +
     98A  LEU*     4.3     4.4    -      -       -      +
     99A  HIS*     3.0    30.5    +      -       -      +
    157A  TYR*     4.9     1.4    +      -       -      -
     87C  TRP*     5.2     3.9    +      -       -      +
     88C  ARG*     2.9    45.2    +      -       -      +
     91C  VAL*     6.2     3.8    -      -       +      -
     92C  HIS*     3.0    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  LEU      2.9    26.6    +      -       -      +
     49A  THR      3.1    23.8    +      -       -      -
     50A  ASP      3.7     0.2    -      -       -      -
     51A  THR*     3.4    31.8    -      -       -      +
     54A  THR*     3.4    15.3    -      -       +      +
     92A  HIS*     3.0    21.8    +      -       -      +
     93A  MET      4.0     0.7    -      -       -      +
     95A  ASP*     1.3    80.1    -      -       -      +
     97A  VAL*     1.3    57.4    +      -       -      +
     99A  HIS*     5.2     0.9    -      -       -      -
    100A  SER*     2.7    36.6    +      -       -      +
     92C  HIS*     5.7     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  THR*     4.2    15.5    -      -       +      -
     48A  LEU*     4.5    12.8    -      -       +      -
     54A  THR*     4.3    12.3    -      -       +      -
     58A  PHE*     3.6    22.8    -      -       +      -
     66A  VAL*     4.2     7.6    -      -       +      -
     68A  HIS*     3.5    44.4    -      -       +      +
     93A  MET      3.1    22.3    +      -       -      +
     94A  ASN      4.1     1.1    -      -       -      +
     96A  ASN*     1.3    74.5    -      -       -      +
     98A  LEU*     1.3    61.4    +      -       +      +
    100A  SER      3.5     0.2    +      -       -      -
    101A  ALA*     3.1    29.8    +      -       -      +
    109A  VAL*     5.2     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  HIS*     5.5     2.0    -      -       +      -
     94A  ASN*     2.9    28.7    +      -       +      +
     95A  ASP*     4.3     3.6    -      -       -      +
     97A  VAL*     1.3    77.9    -      -       +      +
     99A  HIS*     1.3    59.2    +      -       -      +
    101A  ALA*     3.7     1.7    -      -       -      +
    102A  PHE*     3.2    17.2    +      -       -      +
    109A  VAL*     3.7    20.6    -      -       +      -
    111A  SER*     3.7    21.1    -      -       -      +
    150A  ILE*     4.5    15.9    -      -       +      +
    153A  GLN*     3.8    28.7    -      -       +      -
    154A  ASN*     3.9    11.9    -      -       -      +
    157A  TYR*     3.9    14.4    -      -       +      +
    165A  PHE*     3.3    30.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  ASP*     3.0    19.7    +      -       -      +
     96A  ASN*     4.8     1.1    -      -       -      +
     98A  LEU*     1.3    73.7    -      -       -      +
    100A  SER*     1.4    59.3    +      -       -      +
    102A  PHE*     3.3    23.7    +      +       -      +
    103A  GLU*     3.1    44.3    +      -       +      +
    157A  TYR*     2.7    28.7    +      +       -      +
     84C  LEU*     4.6     6.5    -      -       +      -
     88C  ARG*     3.3    47.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  THR      5.0     0.7    +      -       -      -
     54A  THR*     3.7     9.1    -      -       -      +
     55A  ARG*     3.9    16.3    +      -       -      +
     58A  PHE*     3.6    31.0    -      -       -      -
     96A  ASN*     2.7    25.4    +      -       -      -
     97A  VAL      3.9     0.4    -      -       -      -
     99A  HIS*     1.4    74.5    -      -       -      +
    101A  ALA*     1.3    58.8    +      -       -      +
    103A  GLU*     3.6     5.4    +      -       -      +
    104A  VAL*     3.2    35.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  PHE*     3.7    19.9    -      -       +      -
     66A  VAL*     4.2     2.0    -      -       +      -
     97A  VAL      3.1    18.9    +      -       -      +
     98A  LEU      3.7     4.9    -      -       -      +
    100A  SER*     1.3    75.0    -      -       -      +
    102A  PHE*     1.3    56.1    +      -       -      +
    104A  VAL*     4.0     2.1    -      -       -      +
    105A  GLY      3.2     6.1    +      -       -      -
    106A  ALA*     2.8    39.6    +      -       +      +
    109A  VAL*     3.6    30.7    -      -       +      -
    165A  PHE*     4.3     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LEU      3.2    14.5    +      -       -      +
     99A  HIS*     3.4    32.8    -      +       -      +
    100A  SER      3.3     0.2    -      -       -      -
    101A  ALA*     1.3    76.1    -      -       -      +
    103A  GLU*     1.4    64.9    +      -       +      +
    105A  GLY*     3.1    18.6    +      -       -      -
    106A  ALA      5.0     0.2    -      -       -      +
    157A  TYR*     3.6    23.3    -      +       +      -
    161A  TYR*     3.5    63.5    -      +       +      -
    163A  CYS*     3.7    15.7    -      -       -      -
    165A  PHE*     4.0     7.2    -      -       +      -
     84C  LEU*     5.6     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  HIS*     3.1    38.3    +      -       +      +
    100A  SER*     3.6     5.6    +      -       -      +
    102A  PHE*     1.4    82.3    -      -       +      +
    104A  VAL*     1.4    60.8    +      -       +      +
    105A  GLY      3.6     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ARG      5.4     0.9    -      -       -      +
     58A  PHE*     3.4    39.5    -      -       +      +
     59A  GLU*     4.4     5.4    -      -       +      +
     62A  GLN*     4.2    13.2    -      -       +      -
     63A  PRO*     3.8    25.6    -      -       +      +
    100A  SER*     3.2    19.7    +      -       -      +
    101A  ALA*     4.3     4.5    -      -       -      +
    103A  GLU*     1.4    78.4    -      -       +      +
    105A  GLY*     1.3    60.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  PRO      4.6     3.1    -      -       -      +
     64A  THR*     5.3     1.6    -      -       -      +
    101A  ALA      3.2     0.8    +      -       -      -
    102A  PHE      3.1    15.9    +      -       -      -
    103A  GLU      3.3     0.8    -      -       -      -
    104A  VAL*     1.3    81.5    -      -       -      +
    106A  ALA*     1.4    64.4    +      -       -      +
    107A  ARG*     3.6     2.4    +      -       -      +
----------------------------------------------------------
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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