Contacts of the helix formed by residues 27 - 57 (chain D) in PDB entry 5XBY


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 ASP 27 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76C  PRO*     4.6    18.2    -      -       +      +
     25D  PRO*     3.3     4.1    -      -       -      +
     26D  PRO*     1.3    81.9    -      -       +      +
     28D  LEU*     1.3    58.5    +      -       -      +
     29D  VAL*     2.9    24.0    +      -       -      +
     30D  GLU*     3.0    26.9    +      -       +      +
     31D  PHE*     2.9    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 28 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  PRO*     4.2    12.6    -      -       +      -
      7C  PRO      3.9    13.0    -      -       -      +
      8C  GLY*     4.0     4.7    -      -       -      +
      9C  LEU*     3.8    33.7    -      -       +      +
     12C  LEU*     3.8    11.0    -      -       +      -
     16D  TYR*     2.8    30.2    +      -       -      +
     20D  VAL*     3.8    31.6    -      -       +      -
     25D  PRO*     4.9     9.6    -      -       +      +
     26D  PRO      4.1     2.3    +      -       -      +
     27D  ASP*     1.3    71.9    +      -       -      +
     29D  VAL*     1.3    60.8    +      -       +      +
     31D  PHE*     3.6     3.0    +      -       -      -
     32D  ALA*     2.9    18.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 29 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     3.9    26.7    -      -       +      -
     36C  PHE*     4.1     7.0    -      -       +      +
     39C  LEU*     4.4     8.7    -      -       +      +
     40C  ARG*     3.8    38.6    -      -       +      +
     43C  ARG*     4.0    24.7    -      -       +      +
     27D  ASP*     2.9    10.3    +      -       -      +
     28D  LEU*     1.3    74.1    -      -       +      +
     30D  GLU*     1.3    68.0    +      -       -      +
     32D  ALA*     3.1    17.2    +      -       -      +
     33D  VAL*     3.1    14.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 30 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  ARG*     3.2    40.2    +      -       +      +
     27D  ASP*     3.0    31.6    +      -       +      +
     29D  VAL*     1.3    77.1    -      -       -      +
     31D  PHE*     1.3    61.2    +      -       -      +
     33D  VAL*     3.3     5.6    +      -       -      +
     34D  GLU*     3.2    49.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 31 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  TYR*     3.7    16.6    -      +       -      -
     19D  GLU*     3.9    25.6    -      -       +      -
     20D  VAL*     3.8    19.5    -      -       +      -
     23D  GLN*     3.6    41.1    -      -       +      -
     25D  PRO*     3.5    30.3    -      -       +      -
     27D  ASP      2.9    18.4    +      -       -      +
     28D  LEU*     3.8     4.7    -      -       -      +
     30D  GLU*     1.3    74.0    -      -       -      +
     32D  ALA*     1.3    59.4    +      -       -      +
     34D  GLU*     3.4    21.6    +      -       +      +
     35D  TYR*     2.9    41.5    +      +       +      +
     38D  ARG*     5.5     4.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 32 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     4.9     0.2    -      -       +      -
     36C  PHE*     3.8    35.0    -      -       +      -
     16D  TYR*     3.7    22.0    -      -       +      +
     28D  LEU      2.9    16.5    +      -       -      +
     29D  VAL*     3.2    12.1    -      -       -      +
     31D  PHE*     1.3    77.2    -      -       -      +
     33D  VAL*     1.3    62.9    +      -       -      +
     35D  TYR*     3.4     0.3    +      -       -      -
     36D  PHE*     3.1    33.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 33 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  VAL*     5.0     4.2    -      -       +      +
     36C  PHE*     3.5    37.5    -      -       +      +
     37C  THR*     3.6    21.5    -      -       -      +
     40C  ARG*     3.9    32.3    -      -       +      +
     29D  VAL      3.1    13.1    +      -       -      +
     30D  GLU*     3.3     8.3    +      -       -      +
     32D  ALA*     1.3    74.8    -      -       -      +
     34D  GLU*     1.3    61.5    +      -       +      +
     36D  PHE*     4.6     1.5    -      -       -      +
     37D  THR*     2.6    41.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 34 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30D  GLU*     3.2    40.0    +      -       -      +
     31D  PHE*     3.6    24.1    -      -       +      +
     33D  VAL*     1.3    79.8    -      -       +      +
     35D  TYR*     1.3    61.5    +      -       -      +
     37D  THR*     3.8     3.9    -      -       -      -
     38D  ARG*     3.1    54.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 35 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  LEU      4.7     2.3    +      -       -      -
     15D  GLY*     3.7    16.3    +      -       -      -
     16D  TYR*     4.0    30.7    -      +       +      -
     19D  GLU*     3.4    36.5    -      -       +      +
     23D  GLN*     6.2     0.2    -      -       -      -
     31D  PHE*     2.9    31.5    +      +       +      +
     32D  ALA      4.0     2.5    -      -       -      +
     34D  GLU*     1.3    76.3    -      -       -      +
     36D  PHE*     1.3    79.2    +      +       -      +
     38D  ARG*     3.4     7.4    +      -       +      +
     39D  LEU*     2.8    61.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 36 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     5.4     0.4    -      -       +      -
     16C  TYR*     5.5     0.2    -      +       -      -
     29C  VAL*     3.7     5.5    -      -       +      +
     32C  ALA*     3.7    21.1    -      -       +      -
     33C  VAL*     3.5    20.0    -      -       +      +
     36C  PHE*     3.6    31.6    -      +       -      -
     12D  LEU*     3.5    42.0    -      -       +      -
     13D  LEU*     5.1     4.9    -      -       +      -
     16D  TYR*     4.1    29.2    -      +       +      -
     32D  ALA*     3.1    26.3    +      -       +      +
     33D  VAL*     4.6     0.9    -      -       -      +
     35D  TYR*     1.3    90.5    -      +       -      +
     37D  THR*     1.3    56.6    +      -       -      +
     39D  LEU*     3.5    14.2    -      -       +      +
     40D  ARG*     2.7    34.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 37 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  VAL*     3.7    22.2    -      -       -      +
     33D  VAL*     2.6    31.3    +      -       -      +
     34D  GLU*     3.8     4.5    -      -       -      -
     36D  PHE*     1.3    76.9    -      -       -      +
     38D  ARG*     1.3    59.5    +      -       +      +
     40D  ARG*     3.1    23.1    +      -       -      +
     41D  GLU*     2.9    45.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 38 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23D  GLN*     5.4     9.7    +      -       -      +
     31D  PHE*     5.5     4.2    -      -       -      -
     34D  GLU*     3.1    46.1    +      -       -      +
     35D  TYR*     3.7     6.8    -      -       +      +
     37D  THR*     1.3    77.0    -      -       +      +
     39D  LEU*     1.3    52.8    +      -       -      +
     41D  GLU*     3.4    18.3    +      -       -      +
     42D  ALA*     2.7    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 39 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  VAL*     4.2    19.1    -      -       +      -
     12D  LEU*     5.1     8.5    -      -       +      +
     35D  TYR*     2.8    53.2    +      -       +      +
     36D  PHE*     3.6    20.2    -      -       +      +
     38D  ARG*     1.3    74.7    -      -       -      +
     40D  ARG*     1.3    63.9    +      -       -      +
     42D  ALA*     3.9    11.0    -      -       +      -
     43D  ARG*     3.0    42.1    +      -       +      +
     46D  GLU*     6.0     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 40 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  ASP*     6.0     1.6    -      -       -      +
     29C  VAL*     3.7    17.6    -      -       +      +
     30C  GLU*     2.7    45.4    +      -       +      +
     33C  VAL*     3.5    34.4    -      -       +      +
     36D  PHE      2.7    20.8    +      -       -      +
     37D  THR*     3.1    23.9    +      -       -      +
     39D  LEU*     1.3    74.1    -      -       -      +
     41D  GLU*     1.3    65.6    +      -       +      +
     43D  ARG*     3.5     7.4    -      -       -      +
     44D  ASN*     3.3    26.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 41 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37D  THR*     2.9    32.0    +      -       +      +
     38D  ARG*     3.7    23.6    -      -       -      +
     40D  ARG*     1.3    79.4    +      -       +      +
     42D  ALA*     1.3    59.7    +      -       -      +
     44D  ASN*     3.0    25.3    +      -       -      +
     45D  LYS*     3.0    14.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 42 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38D  ARG      2.7    21.8    +      -       -      +
     39D  LEU*     3.2    17.7    +      -       +      +
     41D  GLU*     1.3    71.5    -      -       -      +
     43D  ARG*     1.3    58.5    +      -       +      +
     45D  LYS*     3.3     8.7    +      -       -      +
     46D  GLU*     2.7    49.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 43 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  ASP*     4.9     9.1    +      -       -      -
     28C  LEU*     6.1     1.6    -      -       -      +
     29C  VAL*     3.0    40.7    -      -       -      +
     12D  LEU*     5.0     4.2    -      -       -      +
     39D  LEU*     3.0    34.8    +      -       +      +
     40D  ARG*     3.5     7.2    -      -       -      +
     42D  ALA*     1.3    77.2    -      -       -      +
     44D  ASN*     1.3    65.7    +      -       -      +
     46D  GLU*     3.7    11.2    -      -       -      +
     47D  GLN*     2.9    32.9    +      -       -      +
     76D  PRO*     5.8     1.8    +      -       -      +
     77D  SER*     4.1    32.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 44 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40D  ARG*     3.3    21.0    +      -       -      +
     41D  GLU*     3.0    16.7    +      -       -      +
     43D  ARG*     1.3    77.8    -      -       -      +
     45D  LYS*     1.3    66.5    +      -       -      +
     47D  GLN*     3.0    11.4    +      -       -      +
     48D  GLN*     2.9    37.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 45 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41D  GLU      3.0    12.2    +      -       -      +
     42D  ALA*     3.4    11.7    -      -       -      +
     44D  ASN*     1.3    78.2    -      -       -      +
     46D  GLU*     1.3    64.8    +      -       +      +
     48D  GLN*     3.3    24.8    +      -       -      +
     49D  ASN*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 46 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39D  LEU*     6.0     0.7    -      -       -      +
     42D  ALA*     2.7    32.8    +      -       -      +
     43D  ARG*     4.0    10.3    -      -       -      +
     44D  ASN      3.3     0.2    -      -       -      -
     45D  LYS*     1.3    74.9    -      -       +      +
     47D  GLN*     1.3    59.8    +      -       -      +
     49D  ASN*     4.0     7.8    +      -       -      +
     50D  ALA*     3.7    16.3    +      -       -      +
     79D  SER*     4.6     7.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 47 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43D  ARG*     2.9    25.9    +      -       -      +
     44D  ASN*     3.0    11.2    +      -       -      +
     46D  GLU*     1.3    73.5    -      -       -      +
     48D  GLN*     1.3    72.4    +      -       -      +
     49D  ASN      3.2     0.2    -      -       -      -
     50D  ALA*     3.1    11.6    +      -       -      +
     51D  PHE*     3.4     9.9    +      -       -      +
     72D  LEU*     4.5     9.7    +      -       +      +
     76D  PRO*     1.7    72.7    -      -       +      +
     79D  SER*     3.6    22.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 48 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44D  ASN*     2.9    30.1    +      -       +      +
     45D  LYS*     3.8    20.8    -      -       -      +
     47D  GLN*     1.3    78.0    -      -       -      +
     49D  ASN*     1.3    64.1    +      -       -      +
     51D  PHE*     3.0    21.5    +      -       -      +
     52D  TYR*     3.6    20.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 49 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45D  LYS*     3.0    33.4    +      -       -      +
     46D  GLU*     4.1     8.9    -      -       -      +
     47D  GLN      3.2     0.8    -      -       -      -
     48D  GLN*     1.3    78.9    -      -       -      +
     50D  ALA*     1.3    63.4    +      -       -      +
     52D  TYR*     3.6    11.0    +      -       -      +
     53D  GLU*     3.3    26.4    +      -       +      +
     83D  LEU*     5.5     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 50 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46D  GLU      3.7     9.4    +      -       -      +
     47D  GLN      3.1     9.6    +      -       -      +
     49D  ASN*     1.3    76.9    -      -       -      +
     51D  PHE*     1.3    65.6    -      -       -      +
     53D  GLU*     3.0    14.9    +      -       -      +
     54D  ILE*     3.1    17.0    +      -       +      +
     72D  LEU*     4.0    13.7    -      -       +      -
     79D  SER*     4.3    20.9    -      -       -      +
     83D  LEU*     4.1    28.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 51 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47D  GLN      3.4     4.1    +      -       -      +
     48D  GLN*     3.0    13.6    +      -       -      +
     50D  ALA*     1.3    78.4    -      -       -      +
     52D  TYR*     1.3    88.5    +      +       -      +
     54D  ILE*     3.6     5.6    -      -       -      +
     55D  LEU*     2.9    40.0    +      -       +      +
     69D  ILE*     3.6    41.8    -      -       +      +
     72D  LEU*     3.5    21.0    -      -       +      +
     73D  LYS*     6.5     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 52 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48D  GLN*     3.6    24.5    +      -       +      -
     49D  ASN*     4.0     8.5    -      -       -      +
     50D  ALA      3.2     0.8    -      -       -      -
     51D  PHE*     1.3   100.8    -      +       -      +
     53D  GLU*     1.3    61.3    +      -       +      +
     55D  LEU*     2.1    54.0    +      -       +      -
     56D  HIS*     2.9    17.4    +      +       +      -
----------------------------------------------------------
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Residues in contact with GLU 53 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49D  ASN*     3.3    14.2    +      -       +      +
     50D  ALA*     3.0     8.9    +      -       -      +
     52D  TYR*     1.3    83.6    -      -       +      +
     54D  ILE*     1.3    52.3    +      -       -      +
     56D  HIS*     2.8    24.7    +      -       -      +
     57D  LEU*     2.9    22.1    +      -       +      +
     83D  LEU*     3.8    21.4    -      -       +      +
     87D  LYS*     3.2    27.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 54 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50D  ALA*     3.1    13.6    +      -       +      +
     51D  PHE      3.6     6.3    -      -       -      +
     52D  TYR      2.7     2.2    +      -       -      -
     53D  GLU*     1.3    75.9    -      -       -      +
     55D  LEU*     1.3    62.3    +      -       -      +
     56D  HIS      3.2     0.5    +      -       -      -
     57D  LEU*     3.5    20.3    +      -       +      +
     60D  LEU*     4.3    10.9    -      -       +      +
     65D  ARG*     3.7    17.2    +      -       +      +
     68D  PHE*     4.2    26.2    -      -       +      +
     69D  ILE*     3.9    20.6    -      -       +      -
     72D  LEU*     4.2    21.8    -      -       +      -
     82D  LEU*     4.4    19.7    -      -       +      +
     83D  LEU*     4.3    18.4    -      -       +      +
     86D  ALA*     4.1    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 55 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51D  PHE*     2.9    27.6    +      -       +      +
     52D  TYR*     2.1    51.5    +      -       +      +
     54D  ILE*     1.3    68.0    -      -       -      +
     56D  HIS*     1.3    68.3    +      -       +      +
     65D  ARG*     3.4    31.3    +      -       -      +
     69D  ILE*     4.2    19.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 56 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52D  TYR*     2.9    24.2    +      +       +      +
     53D  GLU*     2.8    12.1    +      -       -      +
     55D  LEU*     1.3    92.4    +      -       +      +
     57D  LEU*     1.3    61.9    +      -       -      +
     58D  PRO*     3.2    11.6    -      -       -      +
     65D  ARG*     5.7     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 57 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53D  GLU*     2.9    16.2    +      -       +      +
     54D  ILE*     3.5    21.9    +      -       +      +
     56D  HIS*     1.3    73.8    -      -       -      +
     58D  PRO*     1.3    73.9    -      -       +      +
     59D  ASN      3.4     1.6    +      -       -      -
     60D  LEU*     3.7    21.4    +      -       +      +
     65D  ARG*     3.5    19.1    +      -       -      -
     83D  LEU*     5.4     1.6    -      -       +      -
     86D  ALA*     3.8    33.0    -      -       +      +
     87D  LYS*     4.3    23.1    -      -       +      -
     90D  ASN*     3.5    26.7    -      -       +      +
----------------------------------------------------------
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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