Contacts of the helix formed by residues 36 - 59 (chain A) in PDB entry 1RVC


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 36 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  GLY*     3.6     1.4    -      -       -      -
     35A  SER*     1.3    76.8    +      -       -      +
     37A  THR*     1.3    63.2    +      -       -      +
     38A  LYS*     3.4    38.1    +      -       -      +
     39A  VAL*     3.0    24.3    +      -       -      +
     40A  LEU*     3.1    11.3    +      -       -      +
    138A  TYR*     3.2     6.7    -      -       -      -
    140A  ARG*     3.8     9.8    +      -       -      +
     69B  GLN*     3.0    39.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 37 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ASP*     1.3    69.1    -      -       -      +
     38A  LYS*     1.3    60.5    +      -       -      +
     40A  LEU      4.3     0.7    -      -       -      +
     41A  SER*     2.7    33.8    +      -       -      -
     93A  THR*     3.7    29.2    -      -       +      +
     94A  THR*     4.3     0.7    -      -       -      +
     95A  TYR*     3.8     3.6    -      -       -      -
    138A  TYR*     2.9    19.6    +      -       +      -
     69B  GLN*     3.0    14.2    +      -       -      -
      8D    T      3.4    29.2    -      -       -      +
      9D    C      2.5    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 38 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ASP*     3.4    30.6    +      -       -      +
     37A  THR*     1.3    77.6    -      -       -      +
     39A  VAL*     1.3    63.2    -      -       +      +
     41A  SER*     3.5     6.6    +      -       -      -
     42A  THR*     3.2    21.0    +      -       -      -
     42B  THR*     3.5    14.1    +      -       -      +
     45B  GLU*     3.1    34.6    +      -       -      +
     69B  GLN*     4.5     1.4    +      -       -      +
     74B  ASP*     4.2     3.4    +      -       -      -
      7D    A      6.1     2.7    -      -       -      -
      8D    T      5.8     1.3    -      -       -      -
      7F    A      3.1    58.0    +      -       +      +
    404F   MG      4.2     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 39 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  LEU*     4.4     6.5    -      -       +      -
     34A  GLY*     3.7    31.6    -      -       -      +
     36A  ASP*     3.0    23.1    +      -       -      +
     38A  LYS*     1.3    85.1    -      -       -      +
     40A  LEU*     1.3    69.7    +      -       +      +
     42A  THR*     3.2     7.3    +      -       -      -
     43A  ILE*     3.1    29.0    +      -       +      +
     42B  THR*     3.7    16.6    -      -       +      -
     45B  GLU*     5.2     2.2    -      -       -      +
     46B  LEU*     4.1    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 40 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  LEU*     4.7     7.6    -      -       +      -
     34A  GLY      4.4     6.5    -      -       -      +
     35A  SER*     4.1    11.4    -      -       -      +
     36A  ASP      3.1     9.1    +      -       -      +
     37A  THR      4.3     0.4    -      -       -      +
     39A  VAL*     1.3    77.9    -      -       +      +
     41A  SER*     1.3    60.5    +      -       -      +
     43A  ILE*     3.2    15.5    +      -       +      +
     44A  PHE*     2.8    51.5    +      -       +      -
    138A  TYR*     3.4    54.5    -      -       +      +
    162A  PRO*     4.5    15.3    -      -       +      +
    163A  TYR*     4.4    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 41 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  THR*     2.7    32.0    +      -       -      -
     38A  LYS*     3.5     8.1    +      -       -      -
     40A  LEU*     1.3    71.8    -      -       -      +
     42A  THR*     1.3    64.4    +      -       -      +
     44A  PHE*     3.5     1.6    +      -       -      +
     45A  GLU*     3.2    28.9    +      -       -      +
     91A  ILE*     5.1     0.7    -      -       -      +
     93A  THR*     3.4    22.9    +      -       -      +
      7D    A      4.0    17.3    +      -       -      +
      8D    T      3.7    23.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 42 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  LYS      3.2     7.7    +      -       -      -
     39A  VAL      3.2     9.6    +      -       -      -
     40A  LEU      3.2     0.2    -      -       -      -
     41A  SER*     1.3    82.4    +      -       -      +
     43A  ILE*     1.3    66.2    +      -       +      +
     45A  GLU*     3.5    11.0    +      -       -      +
     46A  LEU*     3.2    31.8    +      -       +      +
     38B  LYS*     3.8    11.9    +      -       +      +
     39B  VAL*     3.9    35.4    -      -       +      +
     42B  THR*     3.1    30.9    +      -       +      -
     43B  ILE*     4.5     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 43 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  VAL*     4.0    29.4    -      -       +      -
     23A  ILE*     5.2     0.4    -      -       +      -
     33A  LEU*     4.2    29.8    -      -       +      -
     39A  VAL*     3.1    23.9    +      -       +      +
     40A  LEU*     3.2    16.1    +      -       +      +
     42A  THR*     1.3    88.2    -      -       +      +
     44A  PHE*     1.3    75.3    +      -       +      +
     46A  LEU*     3.3     4.4    +      -       +      +
     47A  PHE*     2.8    27.2    +      -       -      +
    163A  TYR*     6.3     0.4    -      -       +      -
     23B  ILE*     3.7    31.2    -      -       +      +
     42B  THR*     5.1     0.9    -      -       +      -
     43B  ILE*     5.1     5.8    -      -       +      -
     46B  LEU*     5.0     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 44 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  ASN*     5.5     1.1    -      -       -      -
     20A  VAL*     6.2     2.2    -      -       +      -
     40A  LEU*     2.8    43.5    +      -       +      +
     41A  SER      4.0     2.9    -      -       -      +
     43A  ILE*     1.3    81.9    -      -       +      +
     45A  GLU*     1.3    64.8    +      -       -      +
     47A  PHE*     3.4     9.9    +      +       +      +
     48A  SER*     2.8    30.4    +      -       -      -
     91A  ILE*     4.6     1.6    -      -       +      -
     93A  THR*     3.7    23.1    -      -       +      +
    136A  TYR*     3.5    53.2    +      +       +      -
    138A  TYR*     4.1    13.2    -      +       +      -
    163A  TYR*     5.4     6.5    -      +       -      -
    166A  VAL*     3.9    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 45 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  SER      3.2    17.0    +      -       -      +
     42A  THR*     3.6    12.5    -      -       -      +
     44A  PHE*     1.3    75.0    -      -       -      +
     46A  LEU*     1.3    67.3    +      -       +      +
     48A  SER*     3.1     4.2    +      -       -      -
     49A  ARG*     3.1    29.6    +      -       +      +
     74A  ASP*     3.0    13.0    -      -       -      +
     75A  PHE*     5.8     2.0    -      -       +      -
     91A  ILE*     3.7    33.4    -      -       +      +
    401A   MG      2.3    29.4    -      -       -      -
     38B  LYS*     3.1    32.5    +      -       -      +
     39B  VAL*     5.1     3.2    -      -       +      +
      7D    A      3.0     4.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 46 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  THR*     3.2    28.1    +      -       +      +
     43A  ILE*     3.6     7.0    -      -       +      +
     45A  GLU*     1.3    81.0    -      -       +      +
     47A  PHE*     1.3    61.6    +      -       -      +
     49A  ARG*     3.6    20.3    +      -       -      +
     50A  PRO*     3.3    19.6    -      -       -      +
     23B  ILE*     3.7    26.0    -      -       +      -
     31B  TYR*     4.1     7.0    -      -       -      +
     32B  PRO*     3.9    14.9    -      -       -      +
     33B  LEU*     3.9    27.1    -      -       +      -
     34B  GLY*     3.6    25.1    -      -       -      +
     39B  VAL*     4.0    17.3    -      -       +      -
     43B  ILE*     5.0     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  LEU      5.1     0.9    -      -       -      -
     14A  GLU*     3.4    37.7    -      -       +      -
     15A  ASN*     4.1    23.6    -      -       +      -
     18A  TYR*     4.1    14.6    -      -       +      -
     20A  VAL*     3.9    22.0    -      -       +      -
     43A  ILE      2.8    18.1    +      -       -      +
     44A  PHE*     3.4    13.0    -      +       +      +
     46A  LEU*     1.3    78.0    -      -       -      +
     48A  SER*     1.3    58.9    +      -       -      +
     50A  PRO*     3.5    15.4    -      -       -      +
     51A  ILE*     3.7    15.7    -      -       +      +
    136A  TYR*     3.7    24.7    -      +       -      -
     23B  ILE*     4.2     2.6    -      -       +      +
     31B  TYR*     3.3    45.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with SER 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  LEU*     4.3     7.0    -      -       -      +
     44A  PHE      2.8    17.4    +      -       -      -
     45A  GLU      3.1     0.6    +      -       -      -
     47A  PHE*     1.3    78.3    -      -       -      +
     49A  ARG*     1.3    64.8    +      -       -      +
     51A  ILE*     3.1    12.1    +      -       -      +
     52A  ILE*     3.0    32.0    +      -       -      +
     91A  ILE*     3.5    23.4    -      -       -      +
    134A  ILE*     4.8     1.0    -      -       -      +
    136A  TYR*     2.6    34.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  GLU*     3.1    15.5    +      -       -      +
     46A  LEU*     3.8    27.9    +      -       -      +
     47A  PHE      3.5     0.2    -      -       -      -
     48A  SER*     1.3    76.4    -      -       -      +
     50A  PRO*     1.3    72.9    -      -       +      +
     52A  ILE*     3.4     2.0    +      -       -      +
     53A  ASN*     3.0    24.1    +      -       -      +
     65A  GLU*     3.0    37.4    +      -       -      -
     75A  PHE*     3.4    27.2    -      -       +      -
     32B  PRO*     4.3    20.4    +      -       -      +
     33B  LEU      4.6     6.6    +      -       -      -
     34B  GLY*     5.2     4.7    -      -       -      -
    146B  SER*     3.4    21.4    -      -       -      -
    147B  SER      3.1    28.1    +      -       -      -
    148B  LEU*     3.8    19.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  LEU      3.3    13.2    -      -       -      +
     47A  PHE      3.5    11.2    -      -       -      +
     49A  ARG*     1.3    97.2    -      -       +      +
     51A  ILE*     1.3    58.3    +      -       +      +
     53A  ASN*     3.5     1.7    +      -       -      +
     54A  LYS*     2.9    29.6    +      -       -      +
     31B  TYR*     3.7    21.5    -      -       +      -
     32B  PRO*     5.6     2.9    -      -       +      -
    148B  LEU*     3.5    24.1    -      -       -      +
    149B  LYS*     4.2     9.4    -      -       -      +
    150B  THR*     3.7    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  LEU*     4.6     4.3    -      -       +      -
     10A  ALA*     3.6    30.7    -      -       +      -
     11A  LEU*     4.0    31.6    -      -       +      +
     14A  GLU*     3.4    46.7    -      -       +      +
     47A  PHE*     3.7    25.1    -      -       +      +
     48A  SER*     3.1     6.1    +      -       -      +
     50A  PRO*     1.3    76.0    -      -       +      +
     52A  ILE*     1.3    67.8    +      -       -      +
     54A  LYS*     3.2     9.4    +      -       +      +
     55A  ILE*     3.0    25.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  LEU*     3.9    24.5    -      -       +      +
     11A  LEU*     5.1     1.6    -      -       +      -
     48A  SER*     3.0    26.7    +      -       -      +
     49A  ARG*     3.8     4.5    -      -       -      +
     51A  ILE*     1.3    76.2    -      -       +      +
     53A  ASN*     1.3    60.0    +      -       -      +
     55A  ILE*     3.4     1.2    +      -       -      +
     56A  ALA*     2.9    31.5    +      -       -      +
     63A  VAL*     4.4    12.6    -      -       +      -
     75A  PHE*     3.6    37.5    -      -       +      -
     77A  LEU*     4.3    26.0    -      -       +      +
     89A  ILE*     4.3    10.3    -      -       +      -
     91A  ILE*     4.6     0.2    -      -       +      -
    134A  ILE*     3.9    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  ARG      3.0    17.4    +      -       -      +
     50A  PRO      3.9     3.3    +      -       -      +
     52A  ILE*     1.3    77.9    -      -       -      +
     54A  LYS*     1.3    64.2    +      -       -      +
     56A  ALA*     3.9     0.3    -      -       -      +
     57A  GLU*     3.1    38.9    +      -       -      +
     63A  VAL*     4.0    23.3    -      -       +      +
    148B  LEU*     3.5    49.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  ALA*     6.4     0.7    -      -       +      -
     50A  PRO      2.9    19.2    +      -       -      +
     51A  ILE*     3.2     8.9    +      -       +      +
     53A  ASN*     1.3    81.2    -      -       -      +
     55A  ILE*     1.3    75.1    +      -       +      +
     57A  GLU*     3.5     6.8    +      -       -      +
     58A  LYS*     3.3    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  LEU*     3.9    16.4    -      -       +      +
      6A  ASP*     3.8    30.7    -      -       +      +
      7A  LEU*     3.8    22.9    -      -       +      +
     10A  ALA*     3.9    28.3    -      -       +      -
     51A  ILE      3.0    15.8    +      -       -      +
     52A  ILE      4.1     1.8    -      -       -      +
     54A  LYS*     1.3    87.0    -      -       +      +
     56A  ALA*     1.3    65.9    +      -       -      +
     58A  LYS*     3.3    18.3    +      -       +      +
     59A  HIS*     3.1    23.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  LEU*     4.1    11.6    -      -       -      +
     52A  ILE      2.9    18.4    +      -       -      +
     53A  ASN      3.9     0.9    -      -       -      +
     55A  ILE*     1.3    75.3    -      -       -      +
     57A  GLU*     1.3    62.4    +      -       -      +
     59A  HIS*     3.0     9.0    +      -       -      +
     60A  GLY      3.2     0.2    +      -       -      -
     61A  TYR*     2.9    32.6    +      -       +      +
     63A  VAL*     3.3    29.6    -      -       +      -
     77A  LEU*     3.9    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  ASN*     3.1    33.4    +      -       -      +
     54A  LYS*     3.7     7.0    -      -       -      +
     55A  ILE      3.3     0.2    -      -       -      -
     56A  ALA*     1.3    76.0    -      -       -      +
     58A  LYS*     1.3    62.4    +      -       -      +
     60A  GLY*     3.2    12.6    +      -       -      +
     61A  TYR      4.1     8.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ASP*     3.6    24.6    +      -       -      +
     54A  LYS      3.3    11.5    +      -       -      +
     55A  ILE*     3.4    22.6    -      -       +      +
     56A  ALA      3.2     0.6    -      -       -      -
     57A  GLU*     1.3    78.6    -      -       -      +
     59A  HIS*     1.3    71.2    +      -       +      +
     60A  GLY      3.8     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  SER*     3.5     6.7    -      -       -      -
      3A  LEU*     3.4    39.2    +      -       +      +
      6A  ASP*     2.8    31.4    +      -       -      +
     55A  ILE*     3.1    24.2    -      -       +      -
     56A  ALA      3.0     5.0    +      -       -      +
     58A  LYS*     1.3    91.7    -      -       +      +
     60A  GLY*     1.3    62.6    +      -       -      +
     61A  TYR*     3.4    28.5    -      -       +      -
     79A  LYS*     3.5    15.1    -      -       -      -
----------------------------------------------------------
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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
------------------------------------------------------------
  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