Contacts of the helix formed by residues 50 - 75 (chain B) in PDB entry 2RHM


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 50 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  SER*     1.3    89.8    +      -       -      +
     51B  ARG*     1.3    64.4    +      -       -      +
     52B  GLU*     3.4    11.1    +      -       -      +
     53B  TRP*     3.0    24.8    +      -       -      +
     54B  SER*     3.1    21.0    +      -       -      -
    133B  GLY      4.6     0.7    -      -       -      +
    135B  CYS*     3.6    10.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 51 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  ASP*     1.3    76.0    -      -       -      +
     52B  GLU*     1.3    58.2    +      -       -      +
     54B  SER*     3.2     5.7    +      -       -      -
     55B  ARG*     2.9    44.7    +      -       +      +
    134B  HIS      5.2     0.4    -      -       -      +
    135B  CYS*     3.8    28.6    -      -       +      +
    137B  ASP*     5.6     7.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 52 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  ASP*     3.3    12.1    +      -       -      +
     51B  ARG*     1.3    77.0    -      -       -      +
     53B  TRP*     1.3    62.3    -      -       -      +
     55B  ARG*     3.3    12.8    +      -       +      +
     56B  ARG*     3.0    47.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 53 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  LEU*     4.1    13.2    -      -       +      -
     53A  TRP*     3.7    31.4    -      +       -      -
     56A  ARG*     5.6     0.7    -      -       -      -
     42B  MSE      6.2     0.2    -      -       -      -
     43B  PHE*     4.1     5.6    -      +       -      -
     46B  LEU*     4.3    19.7    -      -       +      -
     47B  GLY      3.0    19.1    +      -       -      -
     48B  TRP*     3.8    21.9    -      -       -      +
     49B  SER*     3.3    24.2    -      -       -      +
     50B  ASP*     3.0    11.7    +      -       -      +
     52B  GLU*     1.3    73.7    -      -       -      +
     54B  SER*     1.3    57.1    +      -       -      +
     56B  ARG*     3.2    47.8    +      -       +      +
     57B  VAL*     2.8    61.8    +      -       +      +
    133B  GLY      5.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 54 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  LYS*     3.0    27.6    +      -       -      -
     43B  PHE*     4.0    11.2    -      -       -      -
     50B  ASP      3.1    11.3    +      -       -      -
     51B  ARG*     3.4    11.9    -      -       -      -
     53B  TRP*     1.3    77.3    -      -       -      +
     55B  ARG*     1.3    55.9    +      -       -      +
     57B  VAL      3.4     0.3    +      -       -      -
     58B  GLY*     2.8    24.6    +      -       -      -
    133B  GLY      3.6    12.8    -      -       -      -
    134B  HIS*     2.7    30.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 55 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  LYS*     5.3     0.7    -      -       -      +
     51B  ARG*     2.9    30.4    +      -       +      +
     52B  GLU*     3.5    13.7    -      -       -      +
     53B  TRP      3.2     0.2    -      -       -      -
     54B  SER*     1.3    75.9    -      -       -      +
     56B  ARG*     1.3    59.9    +      -       +      +
     58B  GLY*     3.3     1.5    +      -       -      -
     59B  ALA*     3.0    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  GLY      4.3     7.2    +      -       -      +
     46A  LEU*     2.8    43.2    +      -       +      +
     52B  GLU*     3.0    41.3    +      -       +      +
     53B  TRP*     3.5    37.0    -      -       +      +
     55B  ARG*     1.3    74.1    -      -       +      +
     57B  VAL*     1.3    64.0    +      -       -      +
     59B  ALA*     3.4     6.6    +      -       -      +
     60B  THR*     2.9    28.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  LEU*     4.1    12.6    -      -       +      -
     39B  LYS*     3.9    23.3    -      -       +      +
     42B  MSE      3.7    31.5    -      -       +      +
     43B  PHE*     3.9    16.8    -      -       +      -
     46B  LEU*     5.5     0.2    -      -       +      -
     53B  TRP*     2.8    53.9    +      -       +      +
     54B  SER      3.8     3.1    -      -       -      +
     56B  ARG*     1.3    74.6    -      -       -      +
     58B  GLY*     1.3    53.0    +      -       -      +
     60B  THR*     3.2     3.8    +      -       -      -
     61B  ALA*     2.7    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 58 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  LYS*     4.1     5.5    -      -       -      +
     39B  LYS*     3.7    24.2    -      -       -      -
     54B  SER      2.8    18.2    +      -       -      -
     55B  ARG      3.7     2.2    -      -       -      -
     57B  VAL*     1.3    73.6    -      -       -      +
     59B  ALA*     1.3    58.5    +      -       -      +
     61B  ALA*     3.3     1.6    +      -       -      +
     62B  ILE*     3.0    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 59 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  GLY*     5.7     2.7    -      -       -      +
     55B  ARG      3.0    17.8    +      -       -      +
     56B  ARG*     3.7     8.5    -      -       -      +
     58B  GLY*     1.3    74.0    -      -       -      +
     60B  THR*     1.3    61.4    +      -       -      +
     62B  ILE*     3.5    13.1    +      -       -      +
     63B  MSE      3.2    30.3    +      -       -      +
     93B  ARG*     6.4     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 60 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  VAL*     3.9     9.6    -      -       +      +
     42A  MSE      3.8    32.5    -      -       +      +
     45A  GLY*     3.2    23.2    -      -       -      -
     46A  LEU*     3.4     8.9    -      -       +      +
     42B  MSE      3.8    20.2    -      -       -      -
     56B  ARG      2.9    14.7    +      -       -      -
     57B  VAL      3.5     7.6    -      -       -      -
     59B  ALA*     1.3    75.4    -      -       -      +
     61B  ALA*     1.3    59.2    +      -       -      +
     63B  MSE      3.1    12.6    +      -       -      +
     64B  MSE      2.9    26.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  LYS*     3.8    16.4    -      -       +      +
     38B  PHE*     3.8    14.8    -      -       +      -
     39B  LYS*     3.6    22.9    -      -       +      -
     42B  MSE      3.7    12.3    -      -       +      +
     57B  VAL      2.7    19.9    +      -       -      +
     58B  GLY      3.3     5.6    +      -       -      +
     60B  THR*     1.3    73.3    -      -       -      +
     62B  ILE*     1.3    55.9    +      -       -      +
     64B  MSE      3.1     7.7    +      -       -      +
     65B  LEU*     2.8    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 62 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  LYS*     3.5    29.6    -      -       +      +
     58B  GLY      3.0    22.5    +      -       -      +
     59B  ALA*     3.7    11.4    -      -       -      +
     61B  ALA*     1.3    76.8    -      -       -      +
     63B  MSE      1.3    63.8    +      -       +      +
     65B  LEU*     3.1    20.6    +      -       +      +
     66B  TYR*     3.1    34.2    +      -       +      -
     83B  SER*     4.8     4.5    -      -       -      +
     85B  PHE*     6.1     2.9    -      -       +      -
     90B  ASP*     4.1     5.8    -      -       -      +
     93B  ARG*     3.6    36.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with MSE 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  VAL*     2.9    44.2    -      -       +      +
     44A  ASP*     3.6    15.3    -      -       +      +
     45A  GLY*     3.5    25.4    -      -       -      +
     59B  ALA*     3.2    16.1    +      -       -      +
     60B  THR*     3.1    10.2    +      -       +      +
     62B  ILE*     1.3    80.1    -      -       +      +
     64B  MSE      1.3    60.5    +      -       -      +
     66B  TYR*     3.5     6.6    +      -       -      +
     67B  HIS*     3.0    23.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MSE 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  PHE*     3.3    57.7    -      -       +      +
     41A  VAL*     4.0    26.2    -      -       +      -
     42A  MSE      5.0    12.1    -      -       +      -
     64A  MSE      3.8    20.4    -      -       +      -
     38B  PHE*     3.5    15.3    -      -       +      -
     42B  MSE      5.1     5.8    -      -       +      -
     60B  THR      2.9    15.1    +      -       -      +
     61B  ALA*     3.4    11.2    -      -       -      +
     63B  MSE      1.3    72.6    -      -       -      +
     65B  LEU*     1.3    61.3    +      -       -      +
     67B  HIS*     3.7     3.9    -      -       +      +
     68B  THR*     2.9    55.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  LEU*     3.8    21.9    -      -       +      +
     34B  SER      3.8    19.1    -      -       -      -
     35B  LYS*     3.9    25.6    -      -       +      +
     38B  PHE*     3.6    33.2    -      -       +      -
     61B  ALA      2.8    10.5    +      -       -      +
     62B  ILE*     3.2    16.6    -      -       +      +
     64B  MSE      1.3    78.0    -      -       -      +
     66B  TYR*     1.3    57.9    +      -       +      +
     69B  ALA*     2.9    31.5    +      -       -      +
     81B  MSE      4.0    25.1    -      -       +      -
     82B  GLU      4.1     9.0    -      -       -      +
     83B  SER*     4.5     7.4    -      -       -      -
     85B  PHE*     4.7     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62B  ILE*     3.1    33.1    +      -       +      +
     63B  MSE      4.0     6.3    -      -       -      +
     65B  LEU*     1.3    78.1    -      -       +      +
     67B  HIS*     1.3    64.6    +      -       -      +
     69B  ALA*     3.8     3.9    -      -       -      +
     70B  ALA*     3.1    23.6    +      -       -      +
     81B  MSE      4.3    10.3    -      -       +      -
     85B  PHE*     4.0     3.3    -      +       -      -
     90B  ASP*     2.8    31.7    +      -       -      +
     93B  ARG*     3.4    56.1    -      -       +      +
     94B  MSE      3.4    37.1    -      -       +      +
     97B  LEU*     3.9    21.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  LEU      5.2     5.9    +      -       -      -
     34A  SER      5.6     0.6    +      -       -      -
     37A  ALA*     4.0    24.5    -      -       +      +
     38A  PHE*     3.6    37.9    -      +       -      -
     41A  VAL*     4.2    16.7    -      -       +      +
     63B  MSE      3.0    18.6    +      -       -      +
     64B  MSE      3.7    11.0    -      -       +      +
     65B  LEU      3.3     0.2    -      -       -      -
     66B  TYR*     1.3    78.2    -      -       -      +
     68B  THR*     1.3    68.2    +      -       -      +
     70B  ALA*     3.4    10.9    +      -       -      +
     71B  THR*     3.6    13.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  LEU*     4.6     6.7    -      -       +      -
     38A  PHE*     4.0     7.3    -      -       -      -
     68A  THR*     3.3    33.4    +      -       +      +
     33B  LEU*     3.8    21.8    -      -       +      -
     38B  PHE*     4.3     4.7    -      -       +      -
     64B  MSE      2.9    37.6    +      -       -      +
     65B  LEU      4.0     1.8    -      -       -      -
     67B  HIS*     1.3    75.1    -      -       -      +
     69B  ALA*     1.3    65.6    +      -       -      +
     70B  ALA      3.3     0.2    +      -       -      -
     71B  THR*     3.3    10.3    -      -       -      +
     72B  ILE*     3.2    25.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  LEU*     3.7    12.7    -      -       +      +
     65B  LEU      2.9    19.0    +      -       -      +
     66B  TYR*     3.8     5.6    -      -       -      +
     67B  HIS      3.3     0.2    -      -       -      -
     68B  THR*     1.3    78.8    -      -       -      +
     70B  ALA*     1.3    57.6    +      -       -      +
     72B  ILE      3.3     0.5    +      -       -      -
     73B  LEU*     2.9    35.5    +      -       +      +
     79B  LEU*     3.7    12.6    -      -       +      +
     81B  MSE      3.9    24.7    -      -       -      -
     97B  LEU*     4.2    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 70 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66B  TYR      3.1    15.7    +      -       -      +
     67B  HIS*     3.7     7.0    -      -       -      +
     68B  THR      3.2     0.6    -      -       -      -
     69B  ALA*     1.3    78.4    -      -       -      +
     71B  THR*     1.3    60.4    +      -       -      +
     74B  GLN*     2.9    39.4    +      -       -      +
     97B  LEU*     3.7    18.4    -      -       +      +
    100B  ILE*     3.8    23.1    -      -       +      -
    101B  ALA*     3.8     6.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 71 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  ALA*     5.7     0.3    -      -       -      +
     30A  LEU      4.5     2.4    +      -       -      +
     31A  PRO*     3.4    17.1    -      -       +      +
     32A  LEU*     2.9    48.0    +      -       -      +
     33A  LEU*     4.4     8.7    -      -       +      -
     67B  HIS*     3.6    10.3    +      -       -      +
     68B  THR*     3.3    20.6    +      -       -      +
     70B  ALA*     1.3    80.2    -      -       -      +
     72B  ILE*     1.3    63.3    +      -       +      +
     74B  GLN*     3.6    13.6    +      -       -      +
     75B  SER      3.4    14.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 72 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  PRO*     4.3     6.3    -      -       +      -
     72A  ILE*     3.8    38.4    -      -       +      -
     31B  PRO*     4.5    10.1    -      -       +      -
     33B  LEU*     4.3    18.6    -      -       +      -
     68B  THR*     3.2    28.0    +      -       +      +
     69B  ALA      3.8     1.3    -      -       -      +
     71B  THR*     1.3    77.7    -      -       +      +
     73B  LEU*     1.3    64.1    +      -       -      +
     75B  SER*     2.7    25.7    +      -       -      +
     77B  GLN*     3.3    34.2    +      -       +      +
     79B  LEU*     3.6    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 73 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ARG*     5.2     0.5    +      -       -      -
      4B  PRO*     3.5    29.3    -      -       +      +
      5B  ALA      4.0    13.2    -      -       -      +
      6B  LEU*     4.5     6.3    -      -       +      -
     69B  ALA*     2.9    22.2    +      -       +      +
     72B  ILE*     1.3    77.8    -      -       -      +
     74B  GLN*     1.3    56.0    +      -       -      +
     76B  GLY*     3.0    20.8    +      -       -      -
     77B  GLN      3.6    16.4    -      -       -      +
     79B  LEU*     3.6    17.7    -      -       +      -
     97B  LEU*     4.0    18.8    -      -       +      -
    101B  ALA*     3.8    31.1    -      -       +      +
    102B  PRO      4.8     1.1    -      -       -      +
    103B  PHE*     3.9    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 74 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ARG*     3.8    17.5    +      -       -      +
     70B  ALA*     2.9    28.1    +      -       -      +
     71B  THR*     3.8    16.1    +      -       -      +
     72B  ILE      3.3     0.2    -      -       -      -
     73B  LEU*     1.3    76.3    -      -       -      +
     75B  SER*     1.3    59.9    +      -       -      +
     76B  GLY      3.2     0.6    +      -       -      -
    100B  ILE*     3.0    49.4    +      -       -      +
    101B  ALA*     3.8     4.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 75 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ARG*     3.5    46.4    +      -       -      +
     30A  LEU      3.8     1.8    -      -       -      -
     31A  PRO*     3.6    36.9    -      -       -      +
     77A  GLN*     3.9     7.6    +      -       -      +
     71B  THR      3.4     3.3    +      -       -      -
     72B  ILE      2.7    18.6    +      -       -      -
     74B  GLN*     1.3    77.0    -      -       -      +
     76B  GLY*     1.3    57.2    +      -       -      +
     77B  GLN*     3.6    11.3    +      -       -      +
----------------------------------------------------------
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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