Contacts of the helix formed by residues 53 - 80 (chain A) in PDB entry 2BEW


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 PRO 53 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  HIS      3.6     4.7    -      -       -      +
     52A  LEU*     1.3    98.0    -      -       +      +
     54A  LYS*     1.3    67.6    +      -       -      +
     55A  GLU*     4.5     5.8    -      -       +      +
     56A  LYS*     3.1    20.1    +      -       +      +
     57A  VAL*     3.1    18.4    +      -       -      +
    328A  TRP*     4.3     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  PRO*     1.3    71.3    -      -       -      +
     55A  GLU*     1.3    58.0    +      -       -      +
     57A  VAL*     3.2     2.6    +      -       -      +
     58A  LEU*     2.8    52.4    +      -       +      +
    327A  GLY      4.6     4.0    +      -       -      -
    328A  TRP*     3.6    75.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  PRO*     3.2     4.2    +      -       +      +
     54A  LYS*     1.3    79.8    -      -       -      +
     56A  LYS*     1.3    58.7    +      -       -      +
     58A  LEU*     3.5     9.3    +      -       -      +
     59A  LYS*     3.0    28.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  LEU*     4.0    27.6    -      -       +      +
     53A  PRO*     3.1    24.8    +      -       +      +
     55A  GLU*     1.3    80.3    -      -       -      +
     57A  VAL*     1.3    65.9    +      -       -      +
     59A  LYS*     3.2     8.1    +      -       +      +
     60A  LEU*     2.9    22.8    +      -       +      +
    101A  ALA*     3.3    33.4    +      -       +      -
    121A  TYR*     3.6    25.5    +      -       -      +
    262A  TYR*     3.7    14.3    +      -       -      -
    266A  LYS*     5.2     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  LEU*     3.6    35.2    -      -       +      +
     53A  PRO      3.1     8.7    +      -       -      +
     54A  LYS      3.9     1.1    -      -       -      +
     56A  LYS*     1.3    76.2    -      -       -      +
     58A  LEU*     1.3    63.4    +      -       -      +
     60A  LEU*     3.2     8.4    +      -       +      +
     61A  TYR*     3.1    20.4    +      -       -      +
    259A  PHE*     4.2    15.9    -      -       +      -
    319A  LEU*     3.8    20.8    -      -       +      +
    322A  TYR*     4.1    13.0    -      -       +      -
    323A  LEU*     3.6    21.5    -      -       +      -
    328A  TRP*     3.9    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LYS*     2.8    52.0    +      -       +      +
     55A  GLU*     3.8     7.9    -      -       -      +
     57A  VAL*     1.3    73.9    -      -       -      +
     59A  LYS*     1.3    56.5    +      -       -      +
     61A  TYR*     3.2     4.8    +      -       +      +
     62A  LYS*     2.8    44.2    +      -       +      +
    323A  LEU*     3.8    25.1    -      -       +      -
    328A  TRP      3.9     8.3    -      -       -      +
    329A  TRP*     3.8    34.3    -      -       +      -
    333A  GLN*     5.9     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  GLU*     3.0    16.7    +      -       +      +
     56A  LYS*     3.2    11.9    +      -       +      +
     58A  LEU*     1.3    75.4    -      -       -      +
     60A  LEU*     1.3    62.6    +      -       -      +
     62A  LYS*     4.5     5.4    -      -       -      +
     63A  SER*     2.7    39.6    +      -       -      +
    120A  MET      5.0     0.6    +      -       -      -
    121A  TYR*     3.2    51.0    +      -       +      +
    123A  ASP*     2.9    32.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  LEU*     4.2    22.2    -      -       +      -
     56A  LYS*     2.9    17.2    +      -       +      +
     57A  VAL*     3.2    21.1    +      -       +      +
     59A  LYS*     1.3    74.7    -      -       -      +
     61A  TYR*     1.3    65.7    +      -       -      +
     63A  SER*     3.7     1.8    -      -       -      -
     64A  MET*     3.1    28.9    +      -       -      +
     97A  VAL*     3.4    43.4    -      -       +      +
     98A  GLY*     4.3     3.4    -      -       -      +
    101A  ALA*     3.7    17.7    -      -       +      -
    121A  TYR*     4.1     6.7    -      -       +      -
    258A  VAL*     4.5    13.2    -      -       +      +
    259A  PHE*     4.4    13.2    -      -       +      -
    262A  TYR*     5.9     1.6    -      -       +      -
    319A  LEU*     4.0     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL      3.1    10.2    +      -       -      +
     58A  LEU*     3.7     7.9    -      -       +      +
     60A  LEU*     1.3    81.6    -      -       -      +
     62A  LYS*     1.3    69.6    +      -       +      +
     64A  MET*     3.2     5.9    +      -       -      +
     65A  THR*     3.0    48.4    +      -       +      +
    316A  ILE*     3.8    16.8    -      -       +      -
    319A  LEU*     3.7    22.9    -      -       +      +
    320A  ARG*     2.9    40.9    +      -       +      -
    323A  LEU*     3.6    25.8    -      -       +      -
    329A  TRP*     3.7    26.2    -      +       -      -
    334A  GLU*     2.5    30.2    +      -       -      -
    337A  TRP*     4.5     2.7    -      +       -      -
----------------------------------------------------------
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Residues in contact with LYS 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  LEU*     2.8    32.5    +      -       +      +
     59A  LYS*     4.3     4.3    -      -       -      +
     61A  TYR*     1.3    80.1    -      -       +      +
     63A  SER*     1.3    57.3    +      -       -      +
     65A  THR*     3.4     6.1    +      -       -      -
     66A  LEU*     2.8    34.1    +      -       -      +
    329A  TRP*     4.0    23.7    -      -       +      -
    337A  TRP*     3.5    51.2    -      -       +      +
    340A  GLN*     5.3     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  LYS*     2.7    29.5    +      -       -      +
     60A  LEU      3.7     3.6    -      -       -      -
     62A  LYS*     1.3    76.4    -      -       -      +
     64A  MET*     1.3    58.3    +      -       -      +
     66A  LEU*     4.6     1.3    -      -       -      -
     67A  LEU*     3.0    31.5    +      -       -      +
     97A  VAL*     3.9    18.2    -      -       -      -
    117A  GLY*     5.7     0.2    -      -       -      -
    120A  MET*     3.7    23.8    +      -       -      +
    121A  TYR*     3.9    22.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  LEU      3.1    13.3    +      -       -      +
     61A  TYR*     3.2     6.3    +      -       +      +
     63A  SER*     1.3    76.9    -      -       -      +
     65A  THR*     1.3    59.1    +      -       +      +
     67A  LEU*     3.6     6.0    -      -       -      +
     68A  ASN*     3.0    26.7    +      -       -      +
     93A  GLU*     3.8    16.0    -      -       +      +
     94A  GLY*     3.7    27.1    -      -       -      +
     97A  VAL*     3.3    35.4    -      -       +      -
    258A  VAL*     3.9     5.4    -      -       +      -
    315A  PRO      3.8    24.5    -      -       -      +
    316A  ILE*     3.8    30.8    -      -       +      +
    319A  LEU*     3.4    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  TYR*     3.0    36.0    +      -       +      +
     62A  LYS*     3.4     1.7    +      -       -      -
     64A  MET*     1.3    75.5    -      -       -      +
     66A  LEU*     1.3    58.2    +      -       -      +
     68A  ASN*     3.7     6.9    -      -       +      +
     69A  THR*     2.9    33.7    +      -       -      -
    316A  ILE*     3.7    29.8    -      -       +      -
    320A  ARG*     4.5     3.6    -      -       -      +
    334A  GLU*     5.5     1.8    -      -       -      +
    337A  TRP*     2.8    32.9    +      -       +      -
    341A  SER*     5.5     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  LYS      2.8    19.3    +      -       -      +
     63A  SER*     4.0     3.8    -      -       -      +
     65A  THR*     1.3    72.3    +      -       -      +
     67A  LEU*     1.3    65.8    +      -       -      +
     69A  THR*     3.3     4.8    +      -       -      -
     70A  MET*     3.0    23.6    +      -       -      +
    120A  MET*     3.7    27.8    -      -       +      -
    126A  LEU*     4.3    19.1    -      -       +      -
    337A  TRP*     4.2    16.5    -      -       +      -
    341A  SER*     3.8    24.9    -      -       -      +
    344A  LYS*     4.8     8.5    -      -       +      -
    345A  VAL*     3.8    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  SER      3.0    19.4    +      -       -      +
     64A  MET*     3.6     3.8    -      -       -      +
     66A  LEU*     1.3    76.3    -      -       -      +
     68A  ASN*     1.3    57.1    +      -       -      +
     70A  MET*     3.1    20.0    +      -       +      +
     71A  ASP*     2.8    32.7    +      -       -      +
     89A  ASN*     3.8    38.4    -      -       +      +
     93A  GLU*     4.0    17.0    -      -       +      +
     96A  HIS*     3.9     5.6    -      -       -      +
     97A  VAL*     6.2     0.9    -      -       +      -
    116A  ALA*     3.9    18.2    -      -       +      -
    117A  GLY*     3.7    26.2    -      -       -      +
    120A  MET*     3.8    17.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  MET      3.0    18.0    +      -       -      +
     65A  THR*     3.3     9.8    +      -       +      +
     67A  LEU*     1.3    76.7    -      -       -      +
     69A  THR*     1.3    59.8    +      -       -      +
     71A  ASP*     3.4     7.4    +      -       -      +
     72A  ARG*     2.7    67.8    +      -       -      +
     90A  TYR*     3.5    18.7    -      -       -      -
     93A  GLU*     3.2    22.4    +      -       -      +
    314A  HIS*     5.0     5.1    +      -       -      -
    316A  ILE*     4.1    11.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  THR*     2.9    21.0    +      -       -      -
     66A  LEU*     3.5     8.5    -      -       -      -
     67A  LEU      3.3     0.2    -      -       -      -
     68A  ASN*     1.3    71.4    +      -       -      +
     70A  MET*     1.3    64.1    +      -       -      +
     72A  ARG*     3.4    10.6    +      -       -      +
     73A  ILE*     3.2    31.9    +      -       +      +
    341A  SER*     3.8    22.3    +      -       -      +
    342A  ARG*     3.9    34.1    +      -       +      +
    345A  VAL*     3.9    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  LEU      3.0    16.8    +      -       -      +
     67A  LEU*     3.6    24.0    -      -       +      +
     69A  THR*     1.3    74.2    -      -       -      +
     71A  ASP*     1.3    66.9    +      -       -      +
     73A  ILE*     3.3     1.9    +      -       -      +
     74A  LEU*     2.9    41.4    +      -       +      +
     86A  TYR*     3.9    15.3    -      -       -      +
    116A  ALA*     5.3     1.8    -      -       +      -
    120A  MET*     4.1     4.5    -      -       +      -
    126A  LEU*     4.0    14.1    -      -       -      -
    129A  PHE*     3.8    51.8    -      -       +      -
    130A  MET*     3.9    15.7    -      -       +      -
    150A  TYR*     4.5     3.6    -      -       -      +
    345A  VAL*     4.0    15.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  LEU*     2.8    24.2    +      -       -      +
     68A  ASN*     3.5     6.9    -      -       -      +
     70A  MET*     1.3    78.0    -      -       -      +
     72A  ARG*     1.3    58.3    +      -       -      +
     75A  TYR*     2.9    32.9    +      -       -      +
     86A  TYR*     2.6    35.2    +      -       -      -
     88A  THR*     3.7     6.6    -      -       +      -
     89A  ASN*     2.8    49.6    +      -       -      +
     90A  TYR*     3.6    21.6    +      -       +      +
     93A  GLU*     5.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  ASN*     2.7    42.9    +      -       -      +
     69A  THR*     3.7     6.5    -      -       -      +
     70A  MET      3.3     0.2    -      -       -      -
     71A  ASP*     1.3    78.5    -      -       -      +
     73A  ILE*     1.3    65.7    +      -       +      +
     75A  TYR*     3.8     3.4    -      -       -      +
     76A  GLU*     3.1    23.7    +      -       -      +
     90A  TYR*     3.5    19.2    -      -       +      +
    342A  ARG*     3.7    29.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  THR*     3.2    22.8    +      -       +      +
     70A  MET      3.8     2.9    -      -       -      +
     72A  ARG*     1.3    77.6    -      -       +      +
     74A  LEU*     1.3    60.2    +      -       +      +
     76A  GLU*     3.2     7.8    +      -       -      +
     77A  SER*     2.9    25.6    +      -       -      -
    342A  ARG*     4.3    17.0    -      -       +      +
    345A  VAL*     3.3    37.0    -      -       +      -
    346A  MET*     3.7    31.9    -      -       +      -
    349A  PHE*     3.8    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  MET*     2.9    48.8    +      -       +      +
     73A  ILE*     1.3    70.0    -      -       +      +
     75A  TYR*     1.3    66.0    +      -       -      +
     77A  SER*     3.2     3.6    +      -       -      -
     78A  GLN*     3.0    20.4    +      -       -      +
     83A  ILE*     3.6    21.5    -      -       +      +
     86A  TYR*     3.6    37.8    -      -       +      +
    129A  PHE      5.4     0.4    -      -       -      +
    130A  MET*     3.7    32.1    -      -       +      -
    133A  CYS*     4.3    13.0    -      -       +      -
    134A  TYR*     4.5     5.4    -      -       +      -
    150A  TYR*     4.7     1.3    -      -       -      +
    349A  PHE*     4.2    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ASP      2.9    20.7    +      -       -      +
     72A  ARG*     3.8     5.2    -      -       -      +
     74A  LEU*     1.3    76.0    -      -       -      +
     76A  GLU*     1.3    67.3    +      -       -      +
     78A  GLN*     3.2     4.4    +      -       -      +
     79A  ARG*     3.1    57.6    +      -       +      +
     86A  TYR*     3.8    10.1    -      +       -      -
     87A  MET*     6.3     0.2    -      -       -      -
     88A  THR*     4.0    23.1    -      -       +      -
     90A  TYR*     4.7     3.6    -      +       -      +
    290A  HIS*     3.4    33.7    +      +       +      -
    292A  SER      4.8     2.2    -      -       -      -
    293A  THR*     3.7    34.3    +      -       +      -
    295A  ASP      5.2     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  ARG      3.1    12.9    +      -       -      +
     73A  ILE*     3.2     9.4    +      -       -      +
     75A  TYR*     1.3    80.9    -      -       -      +
     77A  SER*     1.3    63.6    +      -       -      +
     79A  ARG*     3.2    14.4    +      -       -      +
     80A  GLN*     3.0    55.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 77 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  ILE      2.9    14.0    +      -       -      -
     74A  LEU*     3.5    13.0    -      -       -      -
     75A  TYR      3.2     0.2    -      -       -      -
     76A  GLU*     1.3    77.1    -      -       -      +
     78A  GLN*     1.3    61.4    +      -       -      +
     80A  GLN*     3.2     5.1    +      -       -      +
     81A  GLY      3.2     3.8    +      -       -      -
     82A  ARG*     3.0    44.3    +      -       -      +
     83A  ILE*     3.8    10.5    +      -       -      +
    134A  TYR*     3.0    22.3    +      -       -      -
    349A  PHE*     3.7    20.0    -      -       -      -
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Residues in contact with GLN 78 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  LEU      3.0    12.5    +      -       -      +
     75A  TYR      3.5     8.3    -      -       -      +
     77A  SER*     1.3    78.2    -      -       -      +
     79A  ARG*     1.3    97.6    +      -       -      +
     81A  GLY*     2.9    14.6    +      -       -      -
     83A  ILE*     3.6    15.4    +      -       +      +
     84A  SER      3.4    18.0    +      -       -      -
     85A  PHE*     3.6    23.3    -      -       -      +
     86A  TYR*     4.2     2.0    -      -       +      -
    293A  THR*     3.2    31.4    +      -       +      +
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Residues in contact with ARG 79 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  TYR*     3.1    52.3    +      -       +      +
     76A  GLU*     3.2    19.7    +      -       -      +
     78A  GLN*     1.3   107.6    +      -       -      +
     80A  GLN*     1.3    60.2    +      -       -      +
    293A  THR*     3.0    25.9    +      -       -      -
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Residues in contact with GLN 80 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76A  GLU*     3.0    43.0    +      -       -      +
     77A  SER*     3.7     7.4    -      -       -      +
     78A  GLN      3.0     1.4    -      -       -      -
     79A  ARG*     1.3    76.6    -      -       +      +
     81A  GLY*     1.3    59.3    +      -       -      +
     82A  ARG*     2.9    43.8    +      -       +      +
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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