Contacts of the helix formed by residues 10 - 35 (chain B) in PDB entry 2WCD


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 VAL 10 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8B  LYS      5.8     2.0    -      -       -      +
      9B  THR*     1.3    78.4    -      -       +      +
     11B  GLU*     1.3    61.5    +      -       -      +
     12B  VAL      2.9     5.4    -      -       -      -
     13B  VAL*     2.8    35.3    +      -       +      +
     14B  LYS*     3.3     6.5    +      -       -      +
     12C  VAL*     4.8    11.2    -      -       +      +
     15C  ASN*     4.4    12.8    -      -       -      +
     16C  ALA*     4.3    29.6    -      -       +      +
     19C  THR*     4.3    21.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 11 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  LYS*     3.8    26.1    +      -       -      -
      8B  LYS*     4.5    30.7    -      -       -      +
      9B  THR      3.3     1.4    -      -       -      +
     10B  VAL*     1.3    81.5    -      -       -      +
     12B  VAL*     1.3    57.4    +      -       -      +
     14B  LYS*     3.9    25.2    -      -       -      -
     15B  ASN*     2.9    30.8    +      -       +      +
     15C  ASN*     4.1    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 12 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  LYS*     4.8    21.1    -      -       -      +
     10A  VAL*     5.0     8.2    -      -       +      +
      8B  LYS      5.8     1.6    -      -       -      +
      9B  THR*     3.8    13.8    +      -       -      +
     10B  VAL      2.8     0.8    +      -       -      -
     11B  GLU*     1.3    76.7    -      -       +      +
     13B  VAL*     1.3    65.4    +      -       +      +
     15B  ASN*     3.4     5.4    +      -       -      +
     16B  ALA*     2.9    32.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 13 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9B  THR      5.2     1.6    -      -       -      +
     10B  VAL*     2.8    26.7    +      -       +      +
     12B  VAL*     1.3    81.6    -      -       +      +
     14B  LYS*     1.3    52.4    +      -       -      +
     16B  ALA*     3.0     7.4    +      -       +      +
     17B  ILE*     2.7    49.4    +      -       +      +
     19C  THR*     4.4    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 14 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10B  VAL      3.3     2.8    +      -       -      -
     11B  GLU*     3.7    28.9    -      -       +      +
     13B  VAL*     1.3    78.3    -      -       -      +
     15B  ASN*     1.3    69.3    +      -       -      +
     17B  ILE*     3.0    21.6    +      -       +      +
     18B  GLU*     3.1    38.6    +      -       +      +
     15C  ASN*     4.2    20.2    -      -       -      +
     18C  GLU*     5.6     3.4    -      -       +      -
     19C  THR*     3.1    40.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 15 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  LYS*     5.1    12.9    -      -       -      +
     10A  VAL*     4.2    13.3    -      -       +      +
     11A  GLU*     4.2    27.3    -      -       -      +
     14A  LYS*     4.3    15.9    -      -       -      +
     11B  GLU*     2.9    27.0    +      -       +      +
     12B  VAL*     3.8     5.2    -      -       -      +
     14B  LYS*     1.3    81.5    +      -       +      +
     16B  ALA*     1.3    57.1    +      -       -      +
     18B  GLU*     3.4    11.8    +      -       -      +
     19B  THR*     3.0    31.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 16 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  VAL*     4.5    17.9    -      -       +      -
     12B  VAL*     2.9    22.4    +      -       +      +
     13B  VAL*     3.4     6.5    -      -       +      +
     15B  ASN*     1.3    74.2    -      -       -      +
     17B  ILE*     1.3    63.5    +      -       +      +
     19B  THR*     3.1    10.3    +      -       -      +
     20B  ALA*     2.8    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 17 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  VAL*     2.7    32.0    +      -       +      +
     14B  LYS*     3.1    17.5    -      -       +      +
     16B  ALA*     1.3    72.3    -      -       +      +
     18B  GLU*     1.3    70.1    +      -       +      +
     20B  ALA*     3.2     8.6    +      -       +      +
     21B  ASP*     3.0    25.5    +      -       -      +
     19C  THR*     5.0     5.8    -      -       +      +
     22C  GLY*     4.4    19.3    -      -       -      +
     23C  ALA*     4.1    27.6    -      -       +      +
     26C  LEU*     3.9    22.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 18 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  LYS*     5.7     4.3    -      -       +      -
     14B  LYS*     3.1    40.0    +      -       +      +
     15B  ASN*     3.7    12.4    -      -       -      +
     17B  ILE*     1.3    86.9    -      -       +      +
     19B  THR*     1.3    67.8    +      -       -      +
     21B  ASP*     3.2    16.2    +      -       -      +
     22B  GLY*     3.3    10.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 19 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  VAL*     4.3    21.8    -      -       +      +
     13A  VAL*     4.4    11.0    -      -       +      -
     14A  LYS*     3.2    50.2    -      -       +      +
     17A  ILE*     5.1     6.8    -      -       +      +
     15B  ASN*     3.0    16.5    +      -       -      -
     16B  ALA*     3.3    12.8    -      -       -      +
     18B  GLU*     1.3    78.4    -      -       -      +
     20B  ALA*     1.3    63.6    +      -       -      +
     22B  GLY*     3.5     1.9    +      -       -      -
     23B  ALA*     3.0    21.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 20 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  ALA      2.8    12.7    +      -       -      +
     17B  ILE*     3.2    10.1    +      -       +      +
     19B  THR*     1.3    74.4    -      -       -      +
     21B  ASP*     1.3    66.5    +      -       -      +
     23B  ALA*     3.0    23.5    -      -       +      +
     24B  LEU*     3.2     8.5    +      -       -      +
     26C  LEU*     3.9    20.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 21 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  ILE      3.0    12.5    +      -       -      +
     18B  GLU*     3.4    13.7    -      -       -      +
     19B  THR      3.2     0.2    -      -       -      -
     20B  ALA*     1.3    71.4    -      -       -      +
     22B  GLY*     1.3    64.8    +      -       -      +
     23B  ALA      2.9     5.4    +      -       -      -
     24B  LEU*     3.0    15.4    +      -       -      +
     25B  ASP*     3.2    11.6    +      -       -      +
     25C  ASP*     6.1     1.2    -      -       -      +
     26C  LEU*     3.6    20.6    +      -       +      +
     29C  LYS*     2.8    42.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 22 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ILE*     4.4    15.3    -      -       -      +
     18B  GLU      3.3     8.9    +      -       -      -
     19B  THR      3.8     2.9    -      -       -      -
     21B  ASP*     1.3    78.8    -      -       -      +
     23B  ALA*     1.3    61.0    +      -       -      +
     25B  ASP*     3.5    14.6    -      -       -      +
     26B  LEU*     3.1    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 23 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ILE*     4.2    19.7    -      -       +      -
     19B  THR*     3.0    14.4    +      -       +      +
     20B  ALA*     3.0    18.4    -      -       -      +
     21B  ASP      2.9     1.2    +      -       -      -
     22B  GLY*     1.3    76.5    -      -       -      +
     24B  LEU*     1.3    67.8    +      -       -      +
     26B  LEU*     3.2     2.9    +      -       -      +
     27B  TYR*     2.8    23.5    +      -       -      +
    186C  VAL*     6.1     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 24 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  ALA      3.2     5.4    +      -       -      +
     21B  ASP      3.0     9.9    +      -       -      +
     23B  ALA*     1.3    76.0    -      -       -      +
     25B  ASP*     1.3    70.4    +      -       -      +
     27B  TYR*     2.8    34.5    +      -       +      +
     28B  ASN*     2.8    19.5    +      -       -      +
     26C  LEU*     4.5    12.3    -      -       +      -
     29C  LYS*     4.3    13.7    -      -       +      -
     30C  TYR*     4.1    39.5    -      -       +      -
     33C  GLN*     3.5    38.8    -      -       -      +
    183C  ALA*     4.8     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 25 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  ASP*     6.0     1.3    -      -       -      +
     21B  ASP*     3.2     9.7    +      -       -      +
     22B  GLY*     3.5    16.2    +      -       -      +
     23B  ALA      3.2     0.4    +      -       -      -
     24B  LEU*     1.3    74.1    -      -       -      +
     26B  LEU*     1.3    58.8    +      -       -      +
     28B  ASN*     3.3     6.0    +      -       -      +
     29B  LYS*     2.8    32.6    +      -       -      +
     29C  LYS*     2.9    36.7    +      -       -      -
     33C  GLN*     5.6     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 26 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ILE*     4.0    27.6    -      -       +      +
     20A  ALA*     4.0    23.8    -      -       +      +
     21A  ASP*     3.5    44.3    +      -       +      +
     24A  LEU*     4.6    14.1    -      -       +      -
     22B  GLY      3.1    13.9    +      -       -      +
     23B  ALA      3.7     3.8    -      -       -      +
     25B  ASP*     1.3    78.2    -      -       -      +
     27B  TYR*     1.3    64.7    +      -       -      +
     29B  LYS*     3.6     7.0    -      -       +      +
     30B  TYR*     3.0    25.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 27 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23B  ALA      2.8    13.7    +      -       -      +
     24B  LEU*     2.8    32.9    +      -       +      +
     26B  LEU*     1.3    74.6    -      -       -      +
     28B  ASN*     1.3    79.1    +      -       -      -
     30B  TYR*     3.4     6.4    +      +       -      +
     31B  LEU*     2.8    53.7    +      -       +      +
    198B  ILE*     6.0     1.2    -      -       -      +
     33C  GLN*     5.2     1.1    -      -       -      -
    179C  ALA*     2.8    31.3    +      -       -      -
    182C  ALA*     4.4     6.2    -      -       -      +
    183C  ALA*     3.4    26.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 28 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  LEU*     2.8    21.8    +      -       -      +
     25B  ASP*     3.9     4.8    +      -       -      +
     27B  TYR*     1.3    84.9    -      -       -      +
     29B  LYS*     1.3    69.3    +      -       -      +
     30B  TYR      3.0     2.0    -      -       -      -
     31B  LEU*     2.6    14.4    +      -       -      +
     32B  ASP*     2.6    38.7    +      -       -      +
     33C  GLN*     2.9    42.6    +      -       -      -
    179C  ALA*     5.6     0.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 29 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  ASP*     2.8    36.5    +      -       -      +
     24A  LEU*     4.2    14.8    -      -       +      -
     25A  ASP*     2.9    30.6    +      -       -      -
     25B  ASP      2.8    23.7    +      -       -      +
     26B  LEU*     3.6     8.1    -      -       +      +
     28B  ASN*     1.3    72.9    -      -       -      +
     30B  TYR*     1.3    58.0    +      -       -      +
     32B  ASP*     3.8     7.4    +      -       -      +
     33B  GLN*     3.2    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 30 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  LEU*     4.0    29.4    -      -       +      -
     26B  LEU*     3.0    18.3    +      -       +      +
     27B  TYR*     3.7     5.2    -      +       -      +
     28B  ASN      2.8     3.0    +      -       -      -
     29B  LYS*     1.3    72.7    -      -       -      +
     31B  LEU*     1.3    63.8    +      -       +      +
     32B  ASP      3.0     2.0    -      -       -      -
     33B  GLN*     2.9     8.8    +      -       +      +
     34B  VAL*     2.8    47.9    +      -       +      +
    180B  GLY*     3.1    30.1    +      -       -      -
    181B  ALA*     3.9     1.9    +      -       -      -
    183B  ALA*     4.5    10.1    -      -       +      -
    184B  GLY*     4.5     5.2    +      -       -      -
    195B  SER*     3.2    30.3    +      -       -      -
    198B  ILE*     6.5     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 31 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  TYR*     2.8    54.5    +      -       +      +
     28B  ASN*     2.6    19.3    +      -       -      +
     30B  TYR*     1.3    76.8    -      -       +      +
     32B  ASP*     1.3    54.0    +      -       -      +
     34B  VAL*     3.3     6.7    +      -       +      +
     35B  ILE*     2.7    44.6    +      -       +      +
    198B  ILE*     4.0    30.7    -      -       +      -
    175C  LYS*     5.5     7.4    -      -       -      +
    179C  ALA*     3.7    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 32 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  ASN*     2.6    32.6    +      -       -      +
     29B  LYS*     3.9     7.8    +      -       -      +
     31B  LEU*     1.3    72.8    -      -       -      +
     33B  GLN*     1.3    66.4    +      -       -      +
     34B  VAL      2.9     2.4    +      -       -      -
     35B  ILE      3.1    25.7    +      -       -      +
     36B  PRO*     3.6     5.7    -      -       -      +
     37B  TRP*     5.9     1.0    -      -       -      +
    175C  LYS*     4.5    14.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 33 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  LEU*     3.5    32.1    -      -       -      +
     25A  ASP*     5.5     0.2    +      -       -      -
     27A  TYR*     5.0     1.6    -      -       -      -
     28A  ASN*     2.8    42.9    +      -       -      -
     29B  LYS*     3.2    23.5    +      -       -      +
     30B  TYR*     2.9    14.9    +      -       +      +
     32B  ASP*     1.3    79.8    -      -       +      +
     34B  VAL*     1.3    59.7    +      -       -      +
     36B  PRO*     4.8     0.9    -      -       -      +
    176B  GLU*     2.8    31.7    -      -       -      +
    177B  ALA*     3.8     0.5    -      -       -      -
    179B  ALA      6.0     0.3    -      -       -      -
    180B  GLY*     4.2    10.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 34 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30B  TYR*     2.8    58.9    +      -       +      +
     31B  LEU*     3.4     5.8    -      -       -      +
     32B  ASP      2.9     0.2    -      -       -      -
     33B  GLN*     1.3    81.1    -      -       -      +
     35B  ILE*     1.3    65.3    +      -       +      +
     36B  PRO*     3.5     1.0    -      -       -      +
    177B  ALA*     3.3    27.1    -      -       -      +
    180B  GLY      4.2     8.7    -      -       -      -
    181B  ALA*     4.4     1.8    -      -       -      +
    195B  SER*     4.4     2.9    -      -       -      +
    198B  ILE*     3.6    31.4    -      -       +      -
    199B  ALA*     3.6    20.5    -      -       +      +
    203B  VAL*     4.6     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 35 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  LEU*     2.7    27.1    +      -       +      +
     32B  ASP*     3.1    17.7    -      -       -      +
     34B  VAL*     1.3    89.2    -      -       +      +
     36B  PRO*     1.3    56.6    -      -       +      +
     37B  TRP*     2.6    39.7    +      -       +      +
    198B  ILE*     3.7    31.0    -      -       +      +
    199B  ALA*     4.8     0.4    -      -       -      -
    202B  VAL*     3.6    35.4    -      -       +      -
    203B  VAL*     5.2     1.6    -      -       +      -
    207B  LEU*     4.4     2.9    -      -       +      -
    175C  LYS*     4.5    17.2    -      -       +      -
    179C  ALA*     6.4     1.3    -      -       +      -
----------------------------------------------------------
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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