Contacts of the helix formed by residues 32 - 59 (chain D) in PDB entry 2FBW


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 GLY 32 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31D  PRO*     1.3    79.0    -      -       -      +
     33D  PRO*     1.3    70.7    -      -       -      +
     34D  ALA      3.3     2.0    +      -       -      -
     35D  VAL      3.5     2.2    +      -       -      -
     36D  ASP*     2.8    35.7    +      -       -      +
     94D  CYS*     4.1     5.9    -      -       -      -
     95D  LYS*     3.5    21.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 33 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31D  PRO      4.8     0.4    -      -       -      +
     32D  GLY*     1.3    83.3    -      -       -      +
     34D  ALA*     1.3    65.6    +      -       +      +
     36D  ASP*     3.1     7.1    +      -       +      +
     37D  TYR*     3.0    45.0    +      -       +      +
     95D  LYS*     5.3     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 34 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32D  GLY      3.3     1.0    +      -       -      -
     33D  PRO*     1.3    81.8    -      -       +      +
     35D  VAL*     1.3    66.0    +      -       +      +
     37D  TYR*     4.2     1.9    -      -       -      +
     38D  SER*     2.8    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 35 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23D  LEU*     4.5    11.4    -      -       +      +
     26D  ALA*     4.0    22.0    -      -       +      +
     27D  ALA*     3.8    19.5    -      -       +      +
     30D  TYR*     3.2    29.4    +      -       +      +
     32D  GLY      3.5     4.5    +      -       -      +
     33D  PRO      3.4     0.4    -      -       -      -
     34D  ALA*     1.3    79.4    -      -       +      +
     36D  ASP*     1.3    65.5    +      -       -      +
     38D  SER*     3.1     5.9    +      -       -      -
     39D  LEU*     2.8    35.1    +      -       +      +
     94D  CYS*     3.6    22.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 36 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32D  GLY*     2.8    31.2    +      -       -      +
     33D  PRO*     3.1     8.7    +      -       +      +
     35D  VAL*     1.3    76.6    -      -       -      +
     37D  TYR*     1.3    59.2    +      -       +      +
     39D  LEU*     3.7     5.6    +      -       -      +
     40D  ALA*     3.2    17.8    +      -       -      +
     87D  ASN*     2.9    27.7    +      -       +      +
     91D  VAL      4.2     3.8    -      -       -      +
     92D  GLY*     3.6    14.4    -      -       -      -
     93D  ILE*     3.0    18.1    +      -       -      +
     94D  CYS*     2.7    36.7    +      -       -      +
     95D  LYS*     4.5     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 37 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33D  PRO*     3.0    43.3    +      -       +      +
     34D  ALA*     4.3     1.8    -      -       -      +
     36D  ASP*     1.3    76.0    -      -       +      +
     38D  SER*     1.3    60.6    +      -       -      +
     40D  ALA*     3.2     3.9    +      -       -      +
     41D  ALA*     3.0    28.4    +      -       -      +
     80D  PHE*     4.9     1.7    -      -       -      -
     84D  CYS*     4.1    28.5    -      -       +      -
     87D  ASN*     3.5    29.3    +      -       +      +
     88D  TYR*     3.4    38.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 38 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  LEU*     5.4     3.8    -      -       -      +
     23D  LEU*     3.7    25.1    -      -       -      -
     34D  ALA      2.8    23.2    +      -       -      -
     35D  VAL*     3.7     2.7    -      -       -      -
     37D  TYR*     1.3    77.9    -      -       -      +
     39D  LEU*     1.3    57.2    +      -       -      +
     41D  ALA*     3.3     5.1    +      -       -      +
     42D  ALA*     2.8    32.9    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     20D  LEU*     3.9    20.4    -      -       +      -
     23D  LEU*     3.8    29.6    -      -       +      +
     24D  LEU*     5.1    10.1    -      -       +      -
     27D  ALA*     4.2    15.3    -      -       +      -
     35D  VAL*     2.8    36.2    +      -       +      +
     36D  ASP      3.8     4.0    -      -       -      +
     38D  SER*     1.3    70.6    -      -       -      +
     40D  ALA*     1.3    59.8    +      -       -      +
     42D  ALA      4.5     0.2    -      -       -      +
     43D  LEU*     2.8    50.6    +      -       +      +
     93D  ILE*     4.3    27.4    -      -       +      -
     94D  CYS*     4.8     3.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 40 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36D  ASP      3.2    13.2    +      -       -      +
     37D  TYR*     3.3    11.0    -      -       -      +
     39D  LEU*     1.3    79.7    -      -       -      +
     41D  ALA*     1.3    59.9    +      -       -      +
     44D  THR*     2.9    30.8    +      -       -      -
     80D  PHE*     3.6    14.7    -      -       +      -
     83D  LEU*     3.9    33.9    -      -       +      +
     84D  CYS*     4.4     5.2    -      -       -      -
     87D  ASN*     4.0     9.2    -      -       -      +
     93D  ILE*     4.3     2.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 41 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37D  TYR      3.0    15.8    +      -       -      +
     38D  SER*     3.8     6.1    -      -       -      +
     40D  ALA*     1.3    76.4    -      -       -      +
     42D  ALA*     1.3    59.3    +      -       -      +
     44D  THR*     3.2     2.9    +      -       -      -
     45D  LEU*     2.9    31.5    +      -       -      +
     80D  PHE*     3.9    19.2    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
     16D  VAL*     4.0     9.2    -      -       +      +
     19D  LEU*     3.9    27.1    -      -       +      -
     20D  LEU*     3.8    24.9    -      -       +      +
     23D  LEU*     4.0     5.8    -      -       +      -
     38D  SER      2.8    20.7    +      -       -      +
     41D  ALA*     1.3    71.2    -      -       -      +
     43D  LEU*     1.3    61.1    +      -       -      +
     45D  LEU*     4.8     2.0    -      -       -      -
     46D  HIS*     2.9    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 43 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  VAL*     4.5    29.2    -      -       +      -
     20D  LEU*     4.0    28.9    -      -       +      -
     39D  LEU*     2.8    46.3    +      -       +      +
     40D  ALA      4.3     2.0    -      -       -      +
     42D  ALA*     1.3    73.6    -      -       -      +
     44D  THR*     1.3    55.3    +      -       -      +
     46D  HIS*     4.2     0.9    -      -       +      +
     47D  GLY*     2.9    27.2    +      -       -      -
     83D  LEU*     4.7    11.0    -      -       +      -
     93D  ILE*     4.7    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 44 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  VAL*     6.1     0.4    -      -       -      -
     40D  ALA      2.9    20.9    +      -       -      -
     41D  ALA      3.2     4.1    +      -       -      -
     43D  LEU*     1.3    78.3    -      -       -      +
     45D  LEU*     1.3    60.3    +      -       -      +
     47D  GLY*     3.8     0.3    -      -       -      -
     48D  HIS*     2.8    29.3    +      -       +      +
     76D  SER*     3.7    26.7    +      -       -      +
     79D  THR*     4.2     8.7    -      -       -      +
     80D  PHE*     3.5    38.9    +      -       +      +
     83D  LEU*     4.2     7.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 45 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  VAL*     3.8    17.5    -      -       +      -
     41D  ALA      2.9    16.8    +      -       -      +
     42D  ALA*     4.2     2.5    -      -       -      +
     44D  THR*     1.3    76.9    -      -       -      +
     46D  HIS*     1.3    65.3    +      -       -      +
     48D  HIS*     3.8     9.1    -      -       +      +
     49D  TRP*     3.1    79.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 46 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98C  HIS*     4.0    24.2    +      +       -      -
     13D  GLU      4.8     1.6    +      -       -      -
     16D  VAL*     3.7    14.9    -      -       +      +
     17D  SER*     3.0    35.9    +      -       -      -
     20D  LEU*     3.6    26.8    -      -       +      +
     42D  ALA      2.9    19.1    +      -       -      +
     43D  LEU      4.2     1.1    -      -       -      +
     45D  LEU*     1.3    76.3    -      -       -      +
     47D  GLY*     1.3    60.9    +      -       -      +
     49D  TRP*     3.6     6.0    +      -       -      +
     50D  GLY*     3.0    25.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 47 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  SER*     3.6    20.6    -      -       -      -
     43D  LEU      2.9    18.0    +      -       -      -
     44D  THR*     3.8     0.4    -      -       -      -
     46D  HIS*     1.3    79.5    -      -       -      +
     48D  HIS*     1.3    63.6    +      -       -      +
     50D  GLY*     3.8     1.1    -      -       -      -
     51D  LEU*     3.0    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 48 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44D  THR*     2.8    23.6    +      -       +      +
     45D  LEU*     3.3    11.4    +      -       +      +
     47D  GLY*     1.3    74.0    -      -       -      +
     49D  TRP*     1.3    76.8    +      +       -      +
     51D  LEU*     5.4     0.2    -      -       -      -
     52D  GLY*     3.0    22.0    +      -       -      -
     69D  ASN*     5.3     0.4    -      -       -      -
     72D  LEU*     3.4    37.3    -      -       +      +
     73D  TYR*     4.0    44.7    +      +       -      -
     76D  SER*     2.7    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 49 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9D  HIS*     3.2    34.7    +      +       -      -
     12D  SER*     3.8    30.3    -      -       -      -
     13D  GLU*     3.8    29.4    -      -       +      +
     16D  VAL*     3.6    28.5    -      -       +      -
     45D  LEU*     3.1    50.0    +      -       +      +
     46D  HIS*     4.1     3.8    -      -       -      +
     48D  HIS*     1.3    93.7    -      +       -      +
     50D  GLY*     1.3    58.2    +      -       -      +
     52D  GLY*     3.1     3.1    +      -       -      +
     53D  GLN*     2.9    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 50 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46D  HIS*     3.0    20.1    +      -       -      -
     47D  GLY*     3.3     1.8    +      -       -      -
     49D  TRP*     1.3    77.0    -      -       -      +
     51D  LEU*     1.3    62.7    +      -       -      +
     53D  GLN*     3.0    19.5    +      -       -      +
     54D  VAL*     3.1    16.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 51 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  GLY      5.4     0.7    -      -       -      +
     47C  VAL*     3.9    41.3    -      -       +      -
     50C  SER*     4.1    22.4    -      -       -      +
     51C  LEU*     5.5     5.6    -      -       +      -
     47D  GLY      3.0    20.7    +      -       -      +
     50D  GLY*     1.3    75.8    -      -       -      +
     52D  GLY*     1.3    56.5    +      -       -      +
     54D  VAL*     3.2     9.2    +      -       +      +
     55D  ILE*     2.9    33.1    +      -       +      +
     72D  LEU*     3.7    32.1    -      -       +      -
     75D  LEU*     4.5    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 52 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48D  HIS      3.0    16.5    +      -       -      -
     49D  TRP*     3.4     6.1    -      -       -      -
     50D  GLY      3.1     0.4    -      -       -      -
     51D  LEU*     1.3    74.9    -      -       -      +
     53D  GLN*     1.3    64.5    +      -       -      +
     55D  ILE*     3.3     6.0    +      -       -      +
     56D  THR*     2.9    28.9    +      -       -      -
     69D  ASN*     4.8     6.5    +      -       -      -
     72D  LEU*     3.6    11.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 53 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  TYR*     5.4     2.5    +      -       -      +
    214B  ARG*     2.7    45.4    +      -       -      +
    216B  HIS*     3.9    10.6    -      -       +      +
     43C  ARG*     4.3    13.0    -      -       -      +
      9D  HIS*     4.4     8.1    +      -       -      -
     13D  GLU*     2.9    32.4    +      -       -      +
     49D  TRP      2.9    18.3    +      -       -      +
     50D  GLY*     3.0    11.0    +      -       -      +
     52D  GLY*     1.3    75.3    -      -       -      +
     54D  VAL*     1.3    63.2    +      -       -      +
     56D  THR*     3.3     3.6    +      -       -      -
     57D  ASP*     3.0    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 54 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  ARG*     3.7    34.1    -      -       +      +
     47C  VAL*     4.3    22.7    -      -       +      -
     50D  GLY      3.1    14.3    +      -       -      +
     51D  LEU*     3.2    13.4    +      -       +      +
     53D  GLN*     1.3    74.6    -      -       -      +
     55D  ILE*     1.3    65.8    +      -       +      +
     57D  ASP*     3.2     2.1    +      -       -      +
     58D  TYR*     3.2    44.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 55 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51D  LEU*     2.9    21.9    +      -       +      +
     52D  GLY*     3.6     4.9    -      -       -      +
     54D  VAL*     1.3    78.6    -      -       +      +
     56D  THR*     1.3    65.4    +      -       -      +
     59D  VAL*     2.9    42.2    +      -       +      +
     65D  ILE*     4.9     5.4    -      -       +      +
     68D  ALA*     3.8    44.6    -      -       +      +
     69D  ASN*     3.9    24.5    -      -       -      +
     72D  LEU*     3.8    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 56 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174B  ASN*     3.8    10.2    -      -       -      +
    209B  PRO*     4.8     6.1    -      -       +      -
    210B  PHE*     3.6    35.7    -      -       +      -
    214B  ARG*     3.6    28.9    +      -       -      +
     52D  GLY      2.9    17.5    +      -       -      -
     53D  GLN*     3.7     6.2    +      -       -      -
     55D  ILE*     1.3    79.2    -      -       -      +
     57D  ASP*     1.3    62.8    +      -       -      +
     59D  VAL      4.0     8.4    -      -       -      +
     60D  HIS*     4.7     0.5    +      -       -      -
     65D  ILE*     6.3     3.6    -      -       -      -
     69D  ASN*     5.7     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 57 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170B  SER*     4.8     3.5    +      -       -      -
    173B  TRP*     3.8     8.5    -      -       +      +
    174B  ASN*     3.0    26.1    +      -       -      +
    214B  ARG*     2.9    32.4    +      -       -      +
    216B  HIS*     2.8    27.9    +      -       -      -
     43C  ARG*     2.8    32.4    +      -       -      +
     53D  GLN      3.0    11.0    +      -       -      -
     54D  VAL      3.6     7.9    -      -       -      +
     56D  THR*     1.3    78.7    -      -       -      +
     58D  TYR*     1.3    67.0    +      -       +      +
     60D  HIS*     3.2    14.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 58 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173B  TRP*     3.5    38.4    +      +       -      -
     43C  ARG*     3.0    39.2    +      -       -      -
     54D  VAL*     3.2    33.6    +      -       +      +
     55D  ILE*     5.4     0.2    -      -       -      -
     57D  ASP*     1.3    85.0    -      -       +      +
     59D  VAL*     1.3    66.2    +      -       +      +
     60D  HIS*     3.1    21.4    +      +       -      -
----------------------------------------------------------
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Residues in contact with VAL 59 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55D  ILE*     2.9    40.8    +      -       +      +
     56D  THR*     4.0     5.5    -      -       -      +
     58D  TYR*     1.3    82.2    -      -       +      +
     60D  HIS*     1.3    69.2    +      -       -      +
     64D  PRO*     3.6    40.8    -      -       +      +
     65D  ILE*     3.5    21.5    -      -       +      +
     68D  ALA*     4.3     9.2    -      -       +      -
----------------------------------------------------------
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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