Contacts of the helix formed by residues 76 - 101 (chain A) in PDB entry 4M83


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 THR 76 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  SER*     1.3    84.7    -      -       -      +
     77A  LEU*     1.3    59.4    +      -       -      +
     78A  LEU*     3.7     2.6    +      -       -      +
     79A  ASP*     2.7    39.2    +      -       -      +
     80A  ASN*     2.8    35.2    +      -       -      -
    157A  ARG*     4.2     5.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  THR*     1.3    72.6    -      -       -      +
     78A  LEU*     1.3    63.0    +      -       -      +
     80A  ASN*     3.1    13.4    +      -       +      +
     81A  VAL*     3.1    30.7    +      -       +      +
    148A  MET*     3.6    56.1    -      -       +      +
    149A  TRP*     3.7    41.5    -      -       +      -
    152A  PRO*     4.0    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  THR*     3.3     2.9    +      -       -      +
     77A  LEU*     1.3    78.9    -      -       -      +
     79A  ASP*     1.3    57.7    +      -       -      +
     81A  VAL*     4.1     2.0    -      -       +      -
     82A  GLU*     3.0    43.8    +      -       +      +
    149A  TRP*     3.5    29.2    -      -       +      -
    152A  PRO*     3.7    28.9    -      -       +      +
    155A  THR*     4.4     2.0    -      -       -      +
    157A  ARG*     3.5    36.1    -      -       -      +
    158A  GLY*     3.9    18.6    -      -       -      +
    161A  TYR*     3.7    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  TRP      3.5     8.1    -      -       -      +
     74A  GLY*     4.1    13.2    -      -       -      -
     75A  SER      4.9     0.9    +      -       -      -
     76A  THR*     2.7    41.0    +      -       -      +
     78A  LEU*     1.3    77.0    -      -       -      +
     80A  ASN*     1.3    58.8    +      -       -      +
     82A  GLU*     4.5     1.6    -      -       -      +
     83A  PRO*     3.1    25.5    -      -       -      +
    157A  ARG*     2.6    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  TRP      3.2    10.6    -      -       -      +
     74A  GLY      3.1    26.0    -      -       -      +
     75A  SER*     5.0     2.2    -      -       -      +
     76A  THR      2.8    24.5    +      -       -      +
     77A  LEU*     3.1    12.3    +      -       +      +
     79A  ASP*     1.3    79.3    -      -       -      +
     81A  VAL*     1.3    61.3    +      -       +      +
     83A  PRO*     3.6     5.2    -      -       -      +
     84A  PHE*     3.2    27.4    -      -       -      -
   1400A  ERY      3.5    46.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  LEU*     3.1    30.8    +      -       +      +
     78A  LEU*     3.9     5.8    -      -       +      +
     80A  ASN*     1.3    77.1    -      -       +      +
     82A  GLU*     1.3    69.8    +      -       -      +
     83A  PRO      3.2     2.5    -      -       -      -
     84A  PHE*     3.0    24.8    +      -       -      +
     85A  LEU*     3.7     3.3    +      -       -      +
    114A  TYR*     4.9     3.2    +      -       -      +
    148A  MET*     6.3     0.2    -      -       +      -
    149A  TRP*     3.8    21.8    -      -       +      -
    161A  TYR*     3.5    34.0    +      -       +      +
   1400A  ERY      3.7    30.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  LEU*     3.0    26.1    +      -       +      +
     79A  ASP*     4.5     1.1    -      -       -      +
     81A  VAL*     1.3    79.4    -      -       -      +
     83A  PRO*     1.3    66.3    -      -       +      +
     85A  LEU*     3.2     6.1    +      -       -      +
     86A  ASN*     3.1    31.0    +      -       -      +
    157A  ARG*     2.8    51.7    +      -       -      +
    161A  TYR*     3.9    32.7    -      -       +      +
    164A  ARG*     5.0    10.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  THR*     4.7     1.0    +      -       -      -
     63A  LEU*     3.6    20.8    -      -       +      +
     64A  PRO*     5.7     3.4    -      -       +      -
     73A  TRP*     5.2     7.6    -      -       +      +
     79A  ASP*     3.1    27.4    -      -       -      +
     80A  ASN      3.6     5.8    -      -       -      +
     81A  VAL      3.4     3.8    -      -       -      -
     82A  GLU*     1.3    94.6    -      -       +      +
     84A  PHE*     1.3    57.3    -      -       +      +
     86A  ASN*     4.0     6.6    -      -       +      +
     87A  ASP*     2.9    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  ILE*     4.1     5.8    -      -       +      -
     63A  LEU*     4.2    13.0    -      -       +      -
     73A  TRP*     3.8    35.0    -      +       -      -
     80A  ASN      3.2    27.8    -      -       -      -
     81A  VAL*     3.0    10.6    +      -       -      +
     83A  PRO*     1.3    78.0    -      -       +      +
     85A  LEU*     1.3    60.6    +      -       -      +
     87A  ASP*     4.1     2.6    -      -       -      +
     88A  ALA*     3.1    26.3    +      -       -      +
    112A  THR*     3.7    46.9    -      -       +      +
    114A  TYR*     3.6    24.2    -      -       +      +
   1400A  ERY      3.8    44.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  VAL      3.7     2.6    +      -       -      +
     82A  GLU      3.2     7.7    +      -       -      +
     84A  PHE*     1.3    77.2    -      -       -      +
     86A  ASN*     1.3    66.9    +      -       -      +
     88A  ALA*     3.0     2.8    +      -       -      +
     89A  ILE*     3.0    43.7    +      -       +      +
    114A  TYR*     3.8    10.8    -      -       +      -
    161A  TYR*     3.8    30.7    -      -       +      +
    164A  ARG*     4.0    21.3    -      -       +      +
    165A  PHE*     3.9    40.4    -      -       +      +
    168A  TRP*     3.7    33.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  THR*     4.4     4.7    +      -       -      +
     82A  GLU*     3.1    20.6    +      -       -      +
     83A  PRO*     4.0     6.4    -      -       +      +
     85A  LEU*     1.3    81.7    -      -       -      +
     87A  ASP*     1.3    62.4    +      -       -      +
     89A  ILE*     3.5    15.6    +      -       -      +
     90A  GLN*     3.5    14.2    +      -       -      +
    164A  ARG*     3.8    22.3    +      -       -      +
    143B  GLU*     4.6    14.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  ILE*     4.6     2.1    -      -       -      +
     59A  TYR*     4.6     9.9    +      -       -      -
     61A  SER*     3.2    16.5    +      -       -      -
     62A  THR*     3.1    29.4    +      -       -      +
     63A  LEU*     3.3    21.9    -      -       +      +
     83A  PRO      2.9    18.7    +      -       -      +
     84A  PHE*     4.1     3.6    -      -       -      +
     86A  ASN*     1.3    74.2    -      -       -      +
     88A  ALA*     1.3    60.7    +      -       -      +
     90A  GLN*     2.6    35.9    +      -       -      -
     91A  ALA*     2.8    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  PHE      3.1    19.8    +      -       -      +
     85A  LEU      3.0     5.9    +      -       -      +
     87A  ASP*     1.3    76.9    -      -       -      +
     89A  ILE*     1.3    58.7    +      -       -      +
     91A  ALA*     4.3     0.2    -      -       -      -
     92A  LEU*     2.9    34.8    +      -       -      +
    114A  TYR*     3.6    30.5    -      -       +      -
    115A  PRO*     3.7    15.8    -      -       +      +
    168A  TRP*     3.7    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  LEU*     3.0    41.7    +      -       +      +
     86A  ASN*     3.9    11.0    -      -       -      +
     87A  ASP      3.2     0.6    -      -       -      -
     88A  ALA*     1.3    77.0    -      -       -      +
     90A  GLN*     1.3    56.3    +      -       -      +
     92A  LEU*     4.4     1.2    -      -       -      +
     93A  PRO*     3.2    21.7    -      -       -      +
    164A  ARG*     5.5     3.1    -      -       +      +
    168A  TRP*     3.5    45.2    +      -       +      +
    143B  GLU*     3.8    50.3    -      -       +      +
    144B  VAL*     6.2     0.7    -      -       +      -
    199B  HIS*     5.9     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  HIS*     2.9    30.7    +      -       -      +
     62A  THR*     3.6    25.5    -      -       +      +
     86A  ASN      3.5     9.9    +      -       -      +
     87A  ASP*     2.6    36.4    +      -       -      +
     89A  ILE*     1.3    78.0    -      -       -      +
     91A  ALA*     1.3    67.5    +      -       -      +
     93A  PRO*     3.6    13.3    -      -       -      +
     94A  GLN*     3.0    36.0    +      -       -      +
    143B  GLU      5.3     1.1    -      -       -      +
    147B  PRO*     3.7    35.2    -      -       +      +
    150B  ARG*     4.6     4.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  TYR*     3.6    31.9    -      -       +      -
     87A  ASP*     2.8    19.8    +      -       -      +
     88A  ALA*     3.9     2.5    -      -       -      +
     90A  GLN*     1.3    83.9    -      -       -      +
     92A  LEU*     1.3    65.6    +      -       -      +
     94A  GLN*     3.0    21.7    +      -       -      +
     95A  LEU*     3.1    15.0    +      -       +      +
    115A  PRO*     3.9    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  ALA      2.9    17.5    +      -       -      +
     89A  ILE      4.4     0.9    -      -       -      +
     91A  ALA*     1.3    75.1    -      -       -      +
     93A  PRO*     1.3    65.5    -      -       +      +
     95A  LEU*     3.1     2.5    +      -       -      -
     96A  ALA*     2.8    27.4    +      -       +      +
    115A  PRO*     4.0    14.8    -      -       +      +
    118A  VAL*     3.8    18.4    -      -       +      -
    119A  LEU*     3.6    35.0    -      -       +      -
    122A  ARG*     3.9    11.2    -      -       -      +
    168A  TRP*     3.7    26.2    -      -       +      +
    172A  ASN*     3.7    26.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  ILE      3.2    20.4    -      -       -      +
     90A  GLN*     3.6    10.3    -      -       -      +
     91A  ALA      3.5     2.7    -      -       -      -
     92A  LEU*     1.3    95.2    -      -       +      +
     94A  GLN*     1.3    61.4    +      -       +      +
     96A  ALA*     4.1     7.0    -      -       +      +
     97A  ASP*     3.3    29.7    +      -       -      +
    147B  PRO*     6.2     1.8    -      -       +      -
    148B  MET*     6.5     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  LEU      4.7     1.1    -      -       -      +
     59A  TYR*     3.5    13.1    -      -       +      -
     60A  HIS      2.8    35.9    +      -       -      +
     90A  GLN*     3.0    40.4    +      -       -      +
     91A  ALA*     3.0    11.3    +      -       -      +
     93A  PRO*     1.3    79.5    -      -       +      +
     95A  LEU*     1.3    60.5    +      -       -      +
     97A  ASP*     3.4     7.5    -      -       -      +
     98A  ALA*     3.2    23.9    +      -       -      +
    150B  ARG*     3.3    22.5    +      -       -      +
    151B  GLU*     4.1     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  PHE*     3.9    22.9    -      -       +      -
     40A  ALA*     3.7    24.7    -      -       +      -
     57A  VAL*     4.7    13.5    -      -       +      +
     58A  LEU      5.6     0.2    -      -       -      -
     59A  TYR*     3.7    38.8    -      -       +      -
     91A  ALA*     3.1    10.3    +      -       +      +
     92A  LEU      3.1     4.7    +      -       -      +
     94A  GLN*     1.3    75.2    -      -       -      +
     96A  ALA*     1.3    65.8    +      -       -      +
     97A  ASP      3.1     1.8    -      -       -      -
     98A  ALA*     3.0    13.4    +      -       +      +
     99A  TYR*     3.1    20.8    +      -       +      +
    113A  SER*     5.4     1.1    -      -       -      +
    115A  PRO*     3.9    25.1    -      -       +      -
    119A  LEU*     3.7    16.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  LEU      2.8    17.0    +      -       -      +
     93A  PRO*     4.4     7.0    -      -       +      +
     95A  LEU*     1.3    75.6    -      -       -      +
     97A  ASP*     1.3    63.8    +      -       -      +
     99A  TYR*     3.6     1.0    +      -       -      +
    100A  ALA*     3.3    22.3    +      -       -      +
    119A  LEU*     3.7    16.2    -      -       +      +
    122A  ARG*     3.2    31.4    -      -       -      +
    123A  TRP*     5.1     3.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  PRO*     3.3    15.1    +      -       -      +
     94A  GLN*     3.4    11.9    +      -       -      +
     95A  LEU      3.1     0.4    -      -       -      -
     96A  ALA*     1.3    80.3    -      -       -      +
     98A  ALA*     1.3    62.5    +      -       -      +
     99A  TYR      3.2     1.0    +      -       -      -
    100A  ALA*     3.4    17.4    +      -       -      +
    101A  ASP*     4.3     2.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ARG*     5.6     3.6    +      -       -      -
     57A  VAL*     3.7    30.4    -      -       +      +
     94A  GLN      3.2    11.1    +      -       -      +
     95A  LEU*     3.0    13.5    +      -       +      +
     97A  ASP*     1.3    80.6    -      -       -      +
     99A  TYR*     1.3    64.6    +      -       +      +
    100A  ALA      3.9     0.3    +      -       -      -
    101A  ASP*     4.4     5.7    +      -       -      +
    102A  ASP*     5.0     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  HIS*     3.5    12.1    -      -       -      -
     10A  ALA*     3.2    18.3    -      -       +      +
     11A  MET      4.5     0.2    +      -       -      -
     12A  PHE*     3.6    24.2    -      +       -      -
     38A  THR*     2.6    36.5    +      -       +      -
     39A  TYR      4.3     0.7    +      -       -      -
     40A  ALA*     4.4     8.3    +      -       +      -
     55A  ARG*     5.8     2.7    -      -       -      -
     57A  VAL*     3.7    26.3    -      -       +      +
     95A  LEU*     3.1    21.8    +      -       +      +
     96A  ALA      4.1     0.4    -      -       -      +
     98A  ALA*     1.3    81.0    -      -       +      +
    100A  ALA*     1.3    64.2    +      -       -      +
    101A  ASP      3.4     2.2    -      -       -      -
    102A  ASP*     3.0    30.7    -      -       +      -
    103A  ILE*     3.1     9.7    +      -       -      +
    104A  PRO*     3.4    16.8    -      -       +      -
    123A  TRP*     3.4    35.9    -      +       +      -
----------------------------------------------------------
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Residues in contact with ALA 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  ALA      3.3    13.8    +      -       -      +
     97A  ASP*     3.4    14.9    +      -       -      +
     99A  TYR*     1.3    78.8    -      -       -      +
    101A  ASP*     1.3    63.2    +      -       -      +
    102A  ASP      3.1     4.5    +      -       -      -
    103A  ILE*     4.1    14.1    -      -       -      +
    123A  TRP*     6.2     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  ASP      4.3     4.0    +      -       -      +
     98A  ALA      4.4     5.2    +      -       -      +
     99A  TYR*     3.4     1.0    -      -       -      +
    100A  ALA*     1.3    80.8    -      -       -      +
    102A  ASP*     1.3    64.2    +      -       -      +
----------------------------------------------------------
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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