Contacts of the helix formed by residues 67 - 93 (chain A) in PDB entry 3Q0U


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 SER 67 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  VAL*     5.2     2.0    -      -       -      -
     61A  PHE*     3.7    11.9    -      -       -      -
     62A  TYR*     4.8     3.1    -      -       -      -
     65A  PHE*     3.3     2.8    +      -       -      +
     66A  PRO*     1.3    82.6    -      -       -      +
     68A  LYS*     1.3    62.5    +      -       -      +
     69A  GLU*     3.4    20.7    +      -       -      +
     70A  ALA*     3.1    29.8    +      -       -      +
     71A  VAL*     3.4    14.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  LEU*     3.0    39.0    +      -       +      +
     43A  ALA*     3.6    17.3    +      -       -      +
     45A  ILE*     2.7    31.4    +      -       +      +
     46A  SER*     4.7     2.2    -      -       -      +
     47A  VAL*     4.4    19.0    -      -       +      +
     50A  LEU*     3.8    21.8    -      -       +      -
     61A  PHE*     4.2     2.0    -      -       -      -
     67A  SER*     1.3    71.1    -      -       -      +
     69A  GLU*     1.3    88.3    +      -       -      +
     71A  VAL*     3.1    21.4    +      -       -      +
     72A  LEU*     3.1    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  LEU*     4.2    17.4    -      -       +      +
     67A  SER*     3.2    20.6    -      -       -      +
     68A  LYS*     1.3   101.2    -      -       -      +
     70A  ALA*     1.3    55.7    +      -       -      +
     72A  LEU*     3.3     5.2    +      -       -      +
     73A  LEU*     3.0    27.4    +      -       -      +
    131A  SER*     6.1     6.5    -      -       -      -
    134A  VAL*     5.5     2.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  PHE*     4.0     7.4    -      -       +      -
     66A  PRO*     3.7    29.2    -      -       +      -
     67A  SER*     3.1    23.9    +      -       -      +
     68A  LYS      3.3     0.2    -      -       -      -
     69A  GLU*     1.3    72.9    -      -       -      +
     71A  VAL*     1.3    66.2    +      -       -      +
     73A  LEU*     3.5    11.3    +      -       +      +
     74A  THR*     3.1    26.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ILE*     4.0     9.4    -      -       +      +
     30A  LEU*     3.8    14.8    -      -       +      +
     33A  ALA*     3.5    32.5    -      -       +      -
     42A  LEU*     6.1     0.4    -      -       +      -
     50A  LEU*     4.2     4.7    -      -       +      -
     61A  PHE*     3.6    22.4    -      -       +      -
     65A  PHE*     3.6    28.0    -      -       +      -
     67A  SER      3.5    14.4    -      -       -      +
     68A  LYS*     3.1    11.5    +      -       -      +
     70A  ALA*     1.3    76.6    -      -       -      +
     72A  LEU*     1.3    56.2    +      -       -      +
     74A  THR*     3.2     4.7    +      -       -      -
     75A  LEU*     3.0    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  LEU*     4.0    15.5    -      -       +      -
     42A  LEU*     3.9    29.8    -      -       +      +
     68A  LYS      3.1    11.1    +      -       -      +
     69A  GLU*     3.3     8.0    +      -       -      +
     71A  VAL*     1.3    73.2    -      -       -      +
     73A  LEU*     1.3    59.7    +      -       -      +
     75A  LEU*     3.1    11.8    +      -       +      -
     76A  LEU*     2.8    29.8    +      -       +      +
    120A  VAL*     4.4     8.5    -      -       +      +
    123A  ALA*     3.7    45.3    -      -       +      +
    124A  GLY*     4.0    12.3    -      -       -      +
    127A  ALA*     3.9    18.8    -      -       +      -
    134A  VAL*     5.5     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  GLU      3.0    15.0    +      -       -      +
     70A  ALA*     3.6    14.1    -      -       +      +
     72A  LEU*     1.3    76.4    -      -       -      +
     74A  THR*     1.3    58.4    +      -       -      +
     76A  LEU*     3.4     2.7    +      -       -      +
     77A  ASP*     2.9    31.8    +      -       +      +
    131A  SER*     5.6     0.2    -      -       -      +
    133A  GLU*     3.6    38.1    -      -       +      +
    134A  VAL*     4.0    26.6    -      -       +      +
    137A  LEU*     3.8    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  GLU*     4.6     6.1    -      -       -      +
     30A  LEU*     3.7    25.1    -      -       +      -
     65A  PHE*     3.5    15.6    -      -       +      -
     70A  ALA      3.1    15.3    +      -       -      -
     71A  VAL      3.2     8.0    +      -       -      -
     73A  LEU*     1.3    73.4    -      -       -      +
     75A  LEU*     1.3    65.9    +      -       -      +
     77A  ASP*     3.3     7.0    +      -       +      +
     78A  ARG*     3.0    36.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  LEU*     3.6    35.2    -      -       +      +
     33A  ALA*     3.8    28.0    -      -       +      -
     34A  GLU*     3.8    26.0    -      -       -      +
     37A  LEU*     4.2    11.0    -      -       +      -
     71A  VAL*     3.0    16.5    +      -       +      +
     72A  LEU*     3.5    10.8    -      -       +      +
     74A  THR*     1.3    77.3    -      -       -      +
     76A  LEU*     1.3    62.7    +      -       -      +
     78A  ARG*     3.3    14.8    +      -       +      +
     79A  VAL*     3.1    26.5    +      -       -      +
    120A  VAL*     3.8    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  LEU*     2.8    16.8    +      -       +      +
     73A  LEU*     3.7     6.3    -      -       -      +
     75A  LEU*     1.3    77.6    -      -       -      +
     77A  ASP*     1.3    56.4    +      -       -      +
     79A  VAL*     3.2     6.6    +      -       +      -
     80A  VAL*     2.9    47.7    +      -       +      +
    114A  PHE*     5.7     1.3    -      -       +      -
    120A  VAL*     3.9    19.7    -      -       +      +
    121A  THR*     5.2     5.2    -      -       -      +
    124A  GLY*     3.9    24.5    -      -       -      +
    125A  GLN*     5.5     1.6    -      -       -      +
    128A  ARG*     6.0     0.2    -      -       +      -
    134A  VAL*     3.7    33.2    -      -       +      +
    137A  LEU*     3.8    20.4    -      -       +      -
    138A  TRP*     4.8    18.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  LEU*     2.9    20.3    +      -       +      +
     74A  THR*     3.6     9.6    -      -       +      +
     76A  LEU*     1.3    76.7    -      -       -      +
     78A  ARG*     1.3    64.6    +      -       -      +
     80A  VAL*     4.7     0.9    -      -       -      -
     81A  ASN*     2.9    47.2    +      -       -      +
    137A  LEU*     3.4    32.0    -      -       +      +
    141A  PHE*     5.0     0.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  LEU*     3.7    32.0    -      -       -      +
     30A  LEU*     4.1    18.1    -      -       -      +
     74A  THR*     3.0    35.7    +      -       +      +
     75A  LEU*     3.3    16.5    +      -       +      +
     77A  ASP*     1.3    79.1    -      -       -      +
     79A  VAL*     1.3    58.9    +      -       +      +
     81A  ASN*     3.8     3.9    -      -       -      +
     82A  GLN*     2.9    30.7    +      -       -      +
     85A  MET*     5.3     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  GLU*     5.3     0.7    -      -       -      +
     75A  LEU*     3.1    16.6    +      -       +      +
     76A  LEU*     3.8     6.1    -      -       +      +
     78A  ARG*     1.3    74.2    -      -       +      +
     80A  VAL*     1.3    61.9    +      -       +      +
     82A  GLN*     3.2     9.5    +      -       -      +
     83A  ALA*     2.9    27.2    +      -       -      +
    113A  THR*     3.7     9.2    -      -       +      +
    114A  PHE*     3.4    30.5    -      -       +      -
    117A  HIS*     3.9    37.7    -      -       +      +
    120A  VAL*     3.9    22.2    -      -       +      -
    121A  THR*     4.8     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  LEU*     2.9    32.5    +      -       +      +
     77A  ASP*     4.1     4.5    -      -       -      +
     79A  VAL*     1.3    76.2    -      -       -      +
     81A  ASN*     1.3    58.1    +      -       -      +
     83A  ALA*     3.3     3.6    +      -       -      +
     84A  ASP*     2.9    26.9    +      -       -      +
    114A  PHE*     4.2    13.9    -      -       +      -
    137A  LEU*     5.0     5.4    -      -       +      +
    138A  TRP*     3.7    32.5    -      -       +      -
    141A  PHE*     3.1    50.0    -      -       +      -
    145A  TRP*     3.8     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  ASP*     2.9    49.5    +      -       -      +
     78A  ARG*     3.9     4.7    -      -       -      +
     80A  VAL*     1.3    75.8    -      -       -      +
     82A  GLN*     1.3    59.3    +      -       -      +
     84A  ASP*     3.7     7.2    -      -       -      +
     85A  MET*     2.8    50.5    +      -       +      +
    141A  PHE*     3.5    26.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  ARG      2.9    20.2    +      -       -      +
     79A  VAL*     3.2     9.5    +      -       -      +
     81A  ASN*     1.3    74.5    -      -       -      +
     83A  ALA*     1.3    64.1    +      -       -      +
     85A  MET*     3.4    15.0    +      -       +      +
     86A  ALA*     3.1    23.7    +      -       +      +
    113A  THR*     3.8    22.4    +      -       +      +
    116A  SER*     6.1     0.6    -      -       -      -
    117A  HIS*     4.0    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  VAL      2.9    13.7    +      -       -      +
     80A  VAL      3.6     7.4    -      -       -      +
     82A  GLN*     1.3    76.8    -      -       -      +
     84A  ASP*     1.3    62.1    +      -       -      +
     86A  ALA      3.3     1.7    +      -       -      -
     87A  LEU*     3.0    21.3    +      -       -      +
    109A  VAL*     3.5     9.9    -      -       +      +
    110A  PHE*     3.7    30.0    -      -       +      -
    113A  THR*     3.7    25.4    -      -       +      +
    114A  PHE*     4.0    11.7    -      -       +      -
    145A  TRP*     4.5     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  VAL      2.9    16.6    +      -       -      +
     81A  ASN*     3.3     7.7    +      -       -      +
     83A  ALA*     1.3    76.2    -      -       -      +
     85A  MET*     1.3    58.8    +      -       +      +
     87A  LEU*     3.3     8.9    +      -       -      +
     88A  GLN*     2.9    54.6    +      -       -      +
    141A  PHE*     3.8    23.1    -      -       +      -
    144A  LYS*     3.5    23.6    -      -       -      +
    145A  TRP*     3.0    29.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  ARG      5.3     0.4    -      -       -      +
     81A  ASN*     2.8    47.8    +      -       +      +
     82A  GLN*     3.7    14.1    -      -       +      +
     84A  ASP*     1.3    72.6    -      -       +      +
     86A  ALA*     1.3    60.1    +      -       -      +
     88A  GLN*     3.2    19.1    +      -       -      +
     89A  THR*     3.0    32.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  GLN*     3.1    17.1    +      -       +      +
     83A  ALA*     3.3     0.9    +      -       -      -
     85A  MET*     1.3    72.1    -      -       -      +
     87A  LEU*     1.3    64.8    +      -       -      +
     89A  THR*     3.3     8.2    +      -       -      -
     90A  LEU*     3.0    24.8    +      -       -      +
    109A  VAL*     3.5    26.9    -      -       +      +
    113A  THR*     4.7     5.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ALA      3.0    13.3    +      -       -      +
     84A  ASP*     3.5    11.7    -      -       -      +
     86A  ALA*     1.3    77.6    -      -       -      +
     88A  GLN*     1.3    57.8    +      -       +      +
     90A  LEU*     3.4     9.3    +      -       +      +
     91A  ALA*     2.9    27.1    +      -       +      +
    106A  GLY*     4.7     7.0    -      -       -      +
    109A  VAL*     3.8     4.6    -      -       +      +
    110A  PHE*     4.0    22.2    -      -       +      -
    145A  TRP*     4.0    15.7    -      -       +      -
    148A  TYR*     4.1    22.2    -      -       +      -
    217A  LL3      3.8    58.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ASP*     2.9    45.0    +      -       -      +
     85A  MET*     3.2    20.0    +      -       -      +
     87A  LEU*     1.3    76.4    -      -       +      +
     89A  THR*     1.3    56.4    +      -       -      +
     91A  ALA*     3.2     8.2    +      -       -      +
     92A  GLU*     3.0    42.7    +      -       -      +
    144A  LYS*     5.6     1.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  MET      3.0    14.4    +      -       -      -
     86A  ALA*     3.6    11.3    -      -       -      -
     87A  LEU      3.3     0.2    -      -       -      -
     88A  GLN*     1.3    72.2    -      -       -      +
     90A  LEU*     1.3    66.4    +      -       -      +
     92A  GLU*     3.3    23.0    +      -       -      +
     93A  ASN*     3.2    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  ALA      3.0    10.7    +      -       -      +
     87A  LEU*     3.5    11.4    -      -       +      +
     89A  THR*     1.3    78.2    -      -       -      +
     91A  ALA*     1.3    62.6    +      -       -      +
     92A  GLU      3.3     0.7    +      -       -      -
     93A  ASN*     3.4    29.9    +      -       +      +
    105A  THR*     3.5    48.0    -      -       +      +
    106A  GLY*     3.6    17.3    -      -       -      +
    109A  VAL*     3.7    15.3    -      -       +      -
    217A  LL3      3.9    23.5    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     87A  LEU      2.9    18.0    +      -       -      +
     88A  GLN*     3.2     9.6    +      -       -      +
     90A  LEU*     1.3    76.4    -      -       -      +
     92A  GLU*     1.3    61.1    +      -       +      +
     93A  ASN      3.6     6.6    -      -       -      +
    148A  TYR*     3.2    40.3    +      -       +      +
    217A  LL3      4.6     8.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  GLN*     3.0    29.7    +      -       -      +
     89A  THR*     3.6    15.9    +      -       -      +
     90A  LEU      3.2     0.4    -      -       -      -
     91A  ALA*     1.3    75.0    -      -       -      +
     93A  ASN*     1.3    69.9    +      -       -      +
     94A  PRO*     3.9     1.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  THR*     3.2    26.2    +      -       -      +
     90A  LEU*     3.4    25.8    +      -       +      +
     91A  ALA*     3.6     8.8    -      -       -      +
     92A  GLU*     1.3    83.5    -      -       -      +
     94A  PRO*     1.4    78.3    -      -       +      +
     95A  ALA*     3.7    15.2    -      -       +      +
----------------------------------------------------------
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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