Contacts of the helix formed by residues 60 - 84 (chain B) in PDB entry 2OTM


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 THR 60 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  LEU*     3.4     3.6    -      -       -      +
     56B  GLY*     5.1     1.8    -      -       -      +
     59B  TYR*     1.3    76.0    -      -       -      +
     61B  VAL*     1.3    65.2    +      -       -      +
     62B  SER*     3.3    14.9    +      -       -      -
     63B  GLU*     3.1    32.2    +      -       -      +
     64B  GLY      2.9    19.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  LEU*     4.2     8.5    -      -       +      -
     56B  GLY*     6.5     0.2    -      -       -      -
     60B  THR*     1.3    74.8    -      -       -      +
     62B  SER*     1.3    57.9    +      -       -      +
     64B  GLY*     3.1     1.7    +      -       -      -
     65B  TYR*     2.9    27.8    +      -       +      +
    105B  CYS*     4.3    15.3    -      -       -      -
    107B  GLU*     3.7    32.3    -      -       +      +
    110B  LYS*     3.8    30.3    -      -       +      -
    111B  ALA*     4.2     6.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 62 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60B  THR*     3.3    11.2    +      -       -      -
     61B  VAL*     1.3    77.1    -      -       -      +
     63B  GLU*     1.3    61.8    +      -       -      +
     65B  TYR*     3.3    10.9    -      -       -      +
     66B  ALA*     3.1    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  TYR*     3.8    12.2    -      -       +      -
     58B  ASP      4.2     2.1    -      -       -      +
     59B  TYR*     3.4    29.1    -      -       +      -
     60B  THR*     3.1    40.5    +      -       -      +
     62B  SER*     1.3    77.4    +      -       -      +
     64B  GLY*     1.3    58.8    +      -       -      +
     66B  ALA*     3.2     8.7    +      -       -      +
     67B  ALA*     2.8    28.6    +      -       -      +
    144B  LEU*     4.9     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  LEU*     3.8    20.6    -      -       -      +
     60B  THR      2.9    11.9    +      -       -      -
     61B  VAL      3.1     3.6    +      -       -      -
     63B  GLU*     1.3    74.6    -      -       -      +
     65B  TYR*     1.3    55.8    +      -       -      +
     67B  ALA*     3.1     1.7    +      -       -      +
     68B  CYS*     2.9    34.8    +      -       -      -
     99B  LEU*     5.2     1.6    -      -       -      -
    111B  ALA*     3.7    10.1    -      -       -      -
    144B  LEU*     4.0    14.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61B  VAL*     2.9    14.2    +      -       +      +
     62B  SER*     3.3    14.8    -      -       -      +
     63B  GLU      3.3     0.2    -      -       -      -
     64B  GLY*     1.3    76.7    -      -       -      +
     66B  ALA*     1.3    61.6    +      -       +      +
     68B  CYS      3.3     0.2    +      -       -      -
     69B  ARG*     3.0    44.9    +      -       -      +
    110B  LYS      3.4    13.5    -      -       -      +
    111B  ALA*     3.4    14.9    -      -       -      +
    113B  ASP*     3.6     5.4    -      -       +      -
    114B  GLY*     3.3    34.3    -      -       -      -
    117B  ASP*     2.6    40.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  TYR*     3.5    19.0    +      -       -      +
     62B  SER      3.1    10.7    +      -       -      +
     63B  GLU*     3.4    11.0    -      -       -      +
     65B  TYR*     1.3    83.2    -      -       +      +
     67B  ALA*     1.3    57.8    +      -       -      +
     69B  ARG*     3.3    10.6    +      -       -      +
     70B  LEU*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  PRO*     3.5     8.0    -      -       -      +
     51B  TYR*     3.6    36.1    -      -       +      -
     63B  GLU      2.8    14.0    +      -       -      +
     64B  GLY      3.1     8.3    +      -       -      +
     66B  ALA*     1.3    76.8    -      -       -      +
     68B  CYS*     1.3    58.1    +      -       -      +
     70B  LEU      3.2     1.0    +      -       -      -
     71B  ALA*     2.9    26.5    +      -       -      +
    144B  LEU*     3.8    15.7    -      -       +      -
    145B  CYS*     3.7    13.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64B  GLY      2.9    16.8    +      -       -      +
     67B  ALA*     1.3    73.1    -      -       -      +
     69B  ARG*     1.3    58.7    +      -       -      +
     71B  ALA*     3.9     2.8    -      -       -      +
     72B  THR*     2.7    37.6    +      -       -      -
     99B  LEU*     3.9    25.4    -      -       -      -
    111B  ALA      3.4    26.0    -      -       -      +
    112B  LEU*     4.0    14.6    -      -       +      -
    115B  ALA*     3.8    17.9    -      -       +      +
    145B  CYS*     4.1    18.8    -      -       -      -
    147B  VAL*     4.2     3.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12B  ALA*     4.7     4.2    +      -       -      +
     14B  LEU*     3.6    32.8    -      -       +      +
     65B  TYR*     3.0    39.4    +      -       -      +
     66B  ALA*     3.5     9.9    -      -       -      +
     68B  CYS*     1.3    77.6    -      -       -      +
     70B  LEU*     1.3    56.2    +      -       -      +
     72B  THR*     3.2     2.2    +      -       -      -
     73B  LEU*     2.9    25.7    +      -       +      +
    114B  GLY*     3.5    19.6    +      -       -      +
    117B  ASP*     5.3     1.0    -      -       -      +
    118B  LEU*     3.5    33.6    -      -       +      +
    121B  GLU*     3.0    33.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 70 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  PRO*     5.7     0.9    -      -       +      -
     43B  PRO*     3.7    28.7    -      -       +      +
     44B  TYR      3.5    23.1    -      -       -      +
     45B  LEU*     4.0    15.3    -      -       +      -
     50B  LEU*     3.7    27.8    -      -       +      -
     51B  TYR*     4.1     5.4    -      -       +      +
     66B  ALA      2.9    16.7    +      -       -      +
     67B  ALA*     3.7     4.0    -      -       -      +
     69B  ARG*     1.3    75.0    -      -       -      +
     71B  ALA*     1.3    65.7    +      -       -      +
     73B  LEU*     3.2    24.4    +      -       +      +
     74B  ASN*     3.0    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 71 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  GLN*     3.7    25.2    -      -       -      +
     42B  PHE      3.5    20.0    -      -       -      -
     43B  PRO*     3.8     2.6    -      -       -      +
     67B  ALA      2.9    16.9    +      -       -      +
     68B  CYS      3.9     0.9    -      -       -      +
     70B  LEU*     1.3    74.4    -      -       -      +
     72B  THR*     1.3    58.3    +      -       -      +
     74B  ASN*     3.3     5.0    +      -       -      +
     75B  ALA*     2.9    25.8    +      -       -      +
    145B  CYS*     4.0     8.7    -      -       -      -
    147B  VAL*     3.7    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 72 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68B  CYS      2.7    23.5    +      -       -      -
     69B  ARG      3.6     4.5    -      -       -      -
     70B  LEU      3.2     0.2    -      -       -      -
     71B  ALA*     1.3    73.0    -      -       -      +
     73B  LEU*     1.3    61.0    +      -       -      +
     75B  ALA*     3.1     6.3    +      -       -      +
     76B  ILE*     2.8    31.8    +      -       +      +
    115B  ALA*     2.9    30.6    -      -       +      +
    118B  LEU*     3.9    15.7    -      -       +      -
    119B  LEU*     3.8    30.1    -      -       +      -
    147B  VAL*     3.7     8.8    -      -       -      +
    149B  LEU*     4.5     8.5    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
      9B  LEU*     3.6    31.0    -      -       +      -
     14B  LEU*     4.2    30.7    -      -       +      -
     15B  GLU      3.6    20.6    -      -       -      +
     16B  LEU*     3.6    18.4    -      -       +      +
     17B  PRO*     3.9    12.7    -      -       +      +
     45B  LEU*     6.4     0.9    -      -       +      -
     69B  ARG*     2.9    13.3    +      -       +      +
     70B  LEU*     3.2    26.0    +      -       +      +
     72B  THR*     1.3    76.3    -      -       -      +
     74B  ASN*     1.3    57.2    +      -       -      +
     76B  ILE*     3.3     3.5    +      -       +      -
     77B  ALA*     3.0    23.7    +      -       -      +
    118B  LEU*     3.7    10.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 74 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  PRO*     3.5    25.8    -      -       -      +
     18B  GLU      4.2     7.6    -      -       -      +
     19B  VAL*     5.4     2.8    -      -       -      +
     20B  ALA*     5.1     4.0    +      -       -      +
     41B  GLN*     3.4    15.9    -      -       +      +
     42B  PHE      3.2    22.1    +      -       -      +
     44B  TYR*     3.0    43.7    +      -       -      +
     70B  LEU*     3.0    26.5    +      -       -      +
     71B  ALA      3.3     8.7    -      -       -      +
     73B  LEU*     1.3    75.9    -      -       -      +
     75B  ALA*     1.3    62.7    +      -       -      +
     77B  ALA*     3.1     5.7    +      -       -      +
     78B  GLN*     3.0    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 75 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38B  THR*     4.5     1.9    -      -       -      +
     41B  GLN*     3.6    27.3    +      -       +      -
     71B  ALA      2.9    16.9    +      -       -      +
     72B  THR*     3.1    11.4    +      -       -      +
     74B  ASN*     1.3    72.4    -      -       -      +
     76B  ILE*     1.3    57.9    +      -       -      +
     78B  GLN*     3.1     4.9    +      -       -      +
     79B  LEU*     3.0    30.7    +      -       -      +
    147B  VAL*     4.3     4.7    -      -       +      -
    149B  LEU*     3.5    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 76 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9B  LEU*     4.4     7.9    -      -       +      -
     16B  LEU*     3.9    12.8    -      -       +      -
     72B  THR*     2.8    32.5    +      -       +      +
     73B  LEU*     3.6     7.0    -      -       -      +
     75B  ALA*     1.3    69.8    -      -       -      +
     77B  ALA*     1.3    60.4    +      -       -      +
     79B  LEU*     3.1     8.4    +      -       +      +
     80B  LYS*     2.9    28.1    +      -       -      +
     86B  LEU*     3.6    26.4    -      -       +      +
    118B  LEU*     3.9    26.5    -      -       +      +
    119B  LEU*     4.5     3.8    -      -       +      -
    122B  ILE*     4.5    11.9    -      -       +      -
    123B  PHE*     4.0    30.1    -      -       +      -
    149B  LEU*     4.5     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 77 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  LEU*     3.7    18.5    -      -       +      +
     17B  PRO*     3.3    36.1    -      -       +      +
     19B  VAL*     3.7    14.0    -      -       +      +
     73B  LEU      3.0    12.7    +      -       -      +
     74B  ASN      3.1     9.8    +      -       -      +
     76B  ILE*     1.3    76.4    -      -       -      +
     78B  GLN*     1.3    61.7    +      -       -      +
     80B  LYS*     3.3     3.4    +      -       -      +
     81B  GLN*     3.0    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 78 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19B  VAL*     2.9    26.3    -      -       +      +
     20B  ALA      4.6     1.2    -      -       -      +
     28B  PRO*     3.2    31.7    -      -       -      +
     29B  TYR*     3.4    18.1    -      -       +      -
     38B  THR*     4.0    11.9    -      -       +      -
     41B  GLN*     3.5    27.5    +      -       -      +
     74B  ASN      3.0    11.0    +      -       -      +
     75B  ALA      3.1     9.6    +      -       -      +
     77B  ALA*     1.3    77.8    -      -       -      +
     79B  LEU*     1.3    62.4    +      -       -      +
     81B  GLN*     3.1    32.4    +      -       -      +
     82B  ALA*     3.1    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 79 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  TYR*     6.1     0.4    -      -       +      -
     36B  LEU*     3.9    29.3    -      -       +      +
     38B  THR*     3.8    23.1    -      -       +      -
     75B  ALA      3.0    14.8    +      -       -      +
     76B  ILE*     3.1    10.5    +      -       -      +
     78B  GLN*     1.3    75.8    -      -       -      +
     80B  LYS*     1.3    58.2    +      -       -      +
     82B  ALA*     3.1     6.8    +      -       -      +
     83B  CYS*     2.9    32.2    +      -       -      -
     86B  LEU*     4.0    10.1    -      -       +      -
     89B  ILE*     4.0    11.9    -      -       +      -
     92B  ILE*     3.6    31.0    -      -       +      -
    123B  PHE*     4.7     4.7    -      -       +      -
    149B  LEU*     3.8    22.9    -      -       +      +
    151B  ALA*     4.5     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 80 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6B  GLU*     2.8    36.8    +      -       +      +
     16B  LEU*     3.7    25.1    -      -       +      -
     76B  ILE      2.9    16.4    +      -       -      +
     77B  ALA      3.6     4.9    -      -       -      +
     78B  GLN      3.3     0.4    -      -       -      -
     79B  LEU*     1.3    78.7    -      -       -      +
     81B  GLN*     1.3    57.5    +      -       -      +
     83B  CYS*     4.5     2.7    -      -       -      -
     84B  GLY*     2.8    55.6    +      -       -      +
     85B  GLU*     4.3     7.3    +      -       -      +
     86B  LEU*     3.6    16.7    -      -       +      +
    157B  GOL      4.3     7.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 81 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19B  VAL*     3.9    25.5    -      -       +      +
     28B  PRO*     5.0     4.9    -      -       -      +
     29B  TYR*     4.1    13.6    +      -       +      -
     77B  ALA      3.0    12.5    +      -       -      +
     78B  GLN*     3.1    30.1    -      -       -      +
     80B  LYS*     1.3    79.1    -      -       -      +
     82B  ALA*     1.3    61.7    +      -       -      +
     84B  GLY*     4.3     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 82 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  TYR*     3.5    48.3    +      -       +      -
     31B  ILE*     5.6     4.1    -      -       +      +
     36B  LEU*     4.0    18.6    -      -       +      -
     78B  GLN      3.1    10.3    +      -       -      +
     79B  LEU*     3.5     8.7    -      -       +      +
     81B  GLN*     1.3    79.5    -      -       -      +
     83B  CYS*     1.3    59.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 83 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36B  LEU*     5.0     2.9    -      -       +      -
     79B  LEU      2.9    27.4    +      -       -      +
     80B  LYS*     4.5     0.4    -      -       -      -
     82B  ALA*     1.3    79.2    -      -       +      +
     84B  GLY*     1.3    57.9    +      -       -      +
     85B  GLU      2.9    32.7    +      -       -      +
     86B  LEU*     4.2     2.9    -      -       -      -
     88B  ARG*     3.0    28.7    +      -       +      -
     89B  ILE*     4.1    26.9    -      -       -      -
    153B  LEU*     4.3    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 84 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80B  LYS*     2.8    54.8    +      -       -      +
     81B  GLN      4.3     2.1    +      -       -      -
     82B  ALA      3.7     1.2    -      -       -      -
     83B  CYS*     1.3    69.4    -      -       -      +
     85B  GLU*     1.3    59.0    +      -       -      +
     86B  LEU      4.1     0.2    -      -       -      -
     88B  ARG*     3.9     6.3    -      -       -      -
----------------------------------------------------------
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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