Contacts of the helix formed by residues 60 - 84 (chain A) 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 A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  LEU*     3.4     4.1    -      -       -      +
     56A  GLY*     5.3     1.8    -      -       -      -
     59A  TYR*     1.3    76.5    -      -       -      +
     61A  VAL*     1.3    66.0    +      -       -      +
     62A  SER*     3.3    11.0    +      -       -      -
     63A  GLU*     3.0    34.1    +      -       -      +
     64A  GLY      2.9    19.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  LEU*     4.3     9.0    -      -       +      -
     60A  THR*     1.3    73.4    -      -       -      +
     62A  SER*     1.3    58.5    +      -       -      +
     64A  GLY*     3.1     1.7    +      -       -      -
     65A  TYR*     2.9    27.7    +      -       +      +
    105A  CYS*     4.4    14.6    -      -       -      -
    107A  GLU*     3.7    30.5    -      -       +      +
    110A  LYS*     3.7    37.7    -      -       +      +
    111A  ALA*     4.2     5.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  THR*     3.3    10.8    +      -       -      -
     61A  VAL*     1.3    79.3    -      -       -      +
     63A  GLU*     1.3    61.6    +      -       -      +
     65A  TYR*     3.4    10.4    -      -       -      +
     66A  ALA*     3.0    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  TYR*     3.6    12.7    -      -       +      +
     58A  ASP      4.1     2.9    -      -       -      +
     59A  TYR*     3.3    30.2    -      -       +      -
     60A  THR*     3.0    42.0    +      -       -      +
     62A  SER*     1.3    78.8    +      -       -      +
     64A  GLY*     1.3    59.8    +      -       -      +
     66A  ALA*     3.2     8.5    +      -       -      +
     67A  ALA*     2.8    28.4    +      -       -      +
    144A  LEU*     4.7     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  LEU*     3.7    21.0    -      -       -      +
     60A  THR      2.9    11.3    +      -       -      -
     61A  VAL      3.1     4.0    +      -       -      -
     63A  GLU*     1.3    77.0    -      -       -      +
     65A  TYR*     1.3    55.4    +      -       -      +
     67A  ALA*     3.2     1.9    +      -       -      +
     68A  CYS*     2.9    35.0    +      -       -      -
     99A  LEU*     5.1     1.1    -      -       -      -
    111A  ALA*     3.7    10.3    -      -       -      -
    144A  LEU*     3.9    13.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  VAL*     2.9    12.9    +      -       +      +
     62A  SER*     3.4    14.8    -      -       -      +
     64A  GLY*     1.3    74.6    -      -       -      +
     66A  ALA*     1.3    61.2    +      -       +      +
     68A  CYS      3.3     1.0    +      -       -      -
     69A  ARG*     2.9    47.6    +      -       -      +
    110A  LYS      3.5    15.3    -      -       -      +
    111A  ALA*     3.4    12.8    -      -       -      +
    113A  ASP*     3.6     5.2    -      -       +      -
    114A  GLY*     3.4    31.6    +      -       -      -
    117A  ASP*     2.6    39.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  TYR*     3.4    21.9    +      -       -      +
     62A  SER      3.0    14.4    +      -       -      +
     63A  GLU*     3.5     9.0    -      -       -      +
     65A  TYR*     1.3    79.7    -      -       +      +
     67A  ALA*     1.3    56.6    -      -       -      +
     69A  ARG*     3.4    10.6    +      -       -      +
     70A  LEU*     3.0    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  PRO*     3.5     8.6    -      -       +      +
     51A  TYR*     3.5    38.3    -      -       +      -
     63A  GLU      2.8    13.7    +      -       -      +
     64A  GLY      3.2     7.6    +      -       -      +
     66A  ALA*     1.3    76.6    -      -       -      +
     68A  CYS*     1.3    56.6    +      -       -      +
     70A  LEU*     3.2     1.1    +      -       -      -
     71A  ALA*     2.8    27.2    +      -       -      +
    144A  LEU*     3.7    15.3    -      -       +      -
    145A  CYS*     3.7    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  GLY      2.9    16.6    +      -       -      +
     65A  TYR      3.9     0.2    -      -       -      +
     67A  ALA*     1.3    73.3    -      -       -      +
     69A  ARG*     1.3    57.6    +      -       -      +
     71A  ALA*     3.9     2.6    -      -       -      +
     72A  THR*     2.7    38.7    +      -       -      -
     99A  LEU*     3.9    22.2    -      -       -      -
    111A  ALA      3.4    30.1    -      -       -      +
    112A  LEU*     3.9    15.3    -      -       +      -
    115A  ALA*     3.8    17.2    -      -       +      +
    145A  CYS*     4.0    16.8    -      -       -      -
    147A  VAL*     4.2     3.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  ALA*     4.8     3.4    +      -       -      +
     14A  LEU*     3.7    30.6    -      -       +      +
     65A  TYR*     2.9    39.6    +      -       -      +
     66A  ALA*     3.4     8.7    -      -       -      +
     68A  CYS*     1.3    76.7    -      -       -      +
     70A  LEU*     1.3    58.5    +      -       -      +
     72A  THR*     3.3     2.3    +      -       -      -
     73A  LEU*     2.9    25.1    +      -       +      +
    114A  GLY*     3.5    19.8    +      -       -      +
    117A  ASP*     5.3     0.6    -      -       -      +
    118A  LEU*     3.5    31.0    -      -       +      +
    121A  GLU*     3.0    38.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  PRO*     5.5     1.6    -      -       +      -
     43A  PRO*     3.6    29.8    -      -       +      +
     44A  TYR      3.4    22.9    -      -       -      +
     45A  LEU*     4.1    16.2    -      -       +      -
     50A  LEU*     3.8    26.7    -      -       +      -
     51A  TYR*     4.2     6.3    -      -       +      -
     66A  ALA      3.0    17.6    +      -       -      +
     67A  ALA*     3.7     4.5    -      -       -      +
     69A  ARG*     1.3    72.8    -      -       -      +
     71A  ALA*     1.3    65.9    +      -       -      +
     73A  LEU*     3.2    23.5    +      -       +      +
     74A  ASN*     3.0    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  GLN*     3.6    25.5    -      -       -      +
     42A  PHE      3.5    20.4    -      -       -      -
     43A  PRO*     3.8     2.3    -      -       -      +
     67A  ALA      2.8    16.9    +      -       -      +
     68A  CYS      3.9     0.4    -      -       -      +
     70A  LEU*     1.3    75.7    -      -       -      +
     72A  THR*     1.3    57.3    +      -       -      +
     74A  ASN*     3.2     5.5    +      -       -      +
     75A  ALA*     2.9    25.6    +      -       -      +
    145A  CYS*     4.0     9.2    -      -       -      -
    147A  VAL*     3.7    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  CYS      2.7    22.8    +      -       -      -
     69A  ARG      3.6     4.3    -      -       -      -
     71A  ALA*     1.3    74.2    -      -       -      +
     73A  LEU*     1.3    59.9    +      -       -      +
     75A  ALA*     3.1     5.8    +      -       -      +
     76A  ILE*     2.8    30.4    +      -       +      +
    115A  ALA*     2.9    31.5    -      -       +      +
    118A  LEU*     4.0    15.0    -      -       +      -
    119A  LEU*     3.8    29.8    -      -       +      -
    147A  VAL*     3.7     9.2    -      -       -      +
    149A  LEU*     4.5     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  LEU*     3.7    30.1    -      -       +      -
     14A  LEU*     4.1    32.1    -      -       +      -
     15A  GLU      3.7    18.2    -      -       -      +
     16A  LEU*     3.8    13.1    -      -       +      +
     17A  PRO*     3.8    15.7    -      -       +      +
     45A  LEU*     6.3     1.3    -      -       +      -
     69A  ARG*     2.9    14.6    +      -       +      +
     70A  LEU*     3.5    24.5    -      -       +      +
     72A  THR*     1.3    75.8    -      -       -      +
     74A  ASN*     1.3    63.1    +      -       -      +
     76A  ILE*     3.4     5.6    +      -       +      +
     77A  ALA*     3.0    22.7    +      -       -      +
    118A  LEU*     3.7    11.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  PRO*     3.6    23.5    -      -       -      +
     18A  GLU      4.1     8.5    -      -       -      +
     19A  VAL*     5.1     2.8    -      -       -      +
     20A  ALA*     5.0     3.8    +      -       -      +
     41A  GLN*     3.6    15.7    -      -       +      +
     42A  PHE      3.3    20.8    +      -       -      +
     44A  TYR*     2.9    44.8    +      -       +      +
     70A  LEU*     3.0    26.5    +      -       -      +
     71A  ALA      3.3     9.4    -      -       -      +
     73A  LEU*     1.3    77.2    -      -       -      +
     75A  ALA*     1.3    62.7    +      -       -      +
     77A  ALA*     3.1     6.5    +      -       -      +
     78A  GLN*     3.0    17.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  THR*     4.7     3.1    -      -       +      +
     41A  GLN*     3.6    29.6    +      -       +      -
     71A  ALA      2.9    11.5    +      -       -      +
     72A  THR*     3.1     9.4    +      -       -      +
     74A  ASN*     1.3    74.7    -      -       -      +
     76A  ILE*     1.3    57.9    +      -       -      +
     78A  GLN*     3.0     6.1    +      -       -      +
     79A  LEU*     3.0    28.8    +      -       -      +
    147A  VAL*     4.4     3.6    -      -       +      -
    149A  LEU*     3.4    33.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  LEU*     4.4     5.4    -      -       +      -
     16A  LEU*     3.8    15.5    -      -       +      -
     72A  THR*     2.8    27.7    +      -       +      +
     73A  LEU*     3.7     8.5    -      -       +      +
     74A  ASN      3.3     0.2    -      -       -      -
     75A  ALA*     1.3    71.9    -      -       -      +
     77A  ALA*     1.3    60.7    +      -       -      +
     79A  LEU*     3.1     9.4    +      -       +      +
     80A  LYS*     2.8    28.4    +      -       -      +
     86A  LEU*     3.8    26.5    -      -       +      -
    118A  LEU*     3.9    27.8    -      -       +      -
    119A  LEU*     4.5     4.0    -      -       +      -
    122A  ILE*     4.5    11.4    -      -       +      -
    123A  PHE*     3.9    30.1    -      -       +      -
    149A  LEU*     4.5     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  LEU*     4.0    16.1    -      -       +      +
     17A  PRO*     3.3    35.9    -      -       +      +
     19A  VAL*     3.6    18.0    -      -       +      +
     73A  LEU      3.0    13.3    +      -       -      +
     74A  ASN*     3.1    11.2    +      -       -      +
     76A  ILE*     1.3    76.3    -      -       -      +
     78A  GLN*     1.3    62.4    +      -       -      +
     80A  LYS*     3.4     2.8    +      -       -      +
     81A  GLN*     3.1    18.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  VAL*     2.8    31.0    -      -       +      +
     20A  ALA      4.9     0.2    -      -       -      +
     28A  PRO*     3.2    29.8    -      -       -      +
     29A  TYR*     3.3    31.7    -      -       +      -
     36A  LEU*     6.2     0.2    -      -       +      -
     38A  THR*     4.4    10.1    -      -       +      -
     41A  GLN*     4.0    18.7    +      -       -      +
     74A  ASN      3.0    10.0    +      -       -      +
     75A  ALA*     3.0    11.4    +      -       -      +
     77A  ALA*     1.3    77.1    -      -       -      +
     79A  LEU*     1.3    63.4    +      -       -      +
     81A  GLN*     3.1    26.8    +      -       -      +
     82A  ALA*     3.1    14.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  LEU*     3.4    33.6    -      -       +      +
     38A  THR*     4.1    12.6    -      -       +      -
     75A  ALA      3.0    16.0    +      -       -      +
     76A  ILE*     3.4    11.7    -      -       +      +
     78A  GLN*     1.3    75.2    -      -       -      +
     80A  LYS*     1.3    59.1    +      -       -      +
     82A  ALA*     3.3     4.9    +      -       -      +
     83A  CYS*     2.9    35.5    +      -       -      +
     86A  LEU*     4.1     8.7    -      -       +      -
     89A  ILE*     4.1    11.9    -      -       +      -
     92A  ILE*     3.5    31.6    -      -       +      -
    123A  PHE*     4.7     5.6    -      -       +      -
    149A  LEU*     3.9    22.4    -      -       +      +
    151A  ALA*     4.4     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  GLU*     2.6    42.0    +      -       +      +
     16A  LEU*     4.1    20.6    -      -       +      -
     76A  ILE      2.8    15.7    +      -       -      +
     77A  ALA      3.7     4.7    -      -       -      +
     78A  GLN      3.3     0.2    -      -       -      -
     79A  LEU*     1.3    75.5    -      -       -      +
     81A  GLN*     1.3    57.8    +      -       -      +
     83A  CYS*     4.2     2.0    -      -       -      -
     84A  GLY*     2.8    52.2    +      -       -      +
     85A  GLU*     4.0     9.1    +      -       -      -
     86A  LEU*     3.7    21.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  VAL*     3.9    24.7    -      -       +      +
     28A  PRO*     5.3     2.8    -      -       -      +
     29A  TYR*     4.4     7.6    +      -       +      +
     77A  ALA      3.1    13.4    +      -       -      +
     78A  GLN*     3.1    31.4    +      -       -      +
     80A  LYS*     1.3    80.2    -      -       -      +
     82A  ALA*     1.3    61.2    +      -       -      +
     84A  GLY*     4.2     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  TYR*     3.4    39.6    +      -       +      -
     31A  ILE*     5.8     0.9    -      -       +      -
     36A  LEU*     3.6    25.6    -      -       +      -
     78A  GLN*     3.1    10.8    +      -       -      +
     79A  LEU*     3.3     6.5    +      -       -      +
     81A  GLN*     1.3    77.9    -      -       -      +
     83A  CYS*     1.3    60.8    +      -       -      +
     84A  GLY      3.7     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  LEU*     5.9     0.7    -      -       +      -
     79A  LEU      2.9    22.5    +      -       -      +
     80A  LYS*     4.2     0.9    -      -       -      -
     82A  ALA*     1.3    78.4    -      -       +      +
     84A  GLY*     1.3    58.6    +      -       -      +
     85A  GLU      2.9    34.5    +      -       -      +
     86A  LEU*     3.8     6.1    -      -       -      -
     88A  ARG*     3.1    26.9    +      -       +      -
     89A  ILE*     3.8    30.5    -      -       +      -
    153A  LEU*     4.9    14.1    -      -       +      -
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Residues in contact with GLY 84 (chain A). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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     80A  LYS*     2.8    47.6    +      -       -      -
     81A  GLN      4.2     2.8    +      -       -      -
     82A  ALA      3.7     1.2    -      -       -      -
     83A  CYS*     1.3    68.7    -      -       -      +
     85A  GLU*     1.3    64.5    +      -       -      +
     86A  LEU      4.2     0.2    -      -       -      -
     88A  ARG*     4.2     6.1    -      -       -      -
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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