Contacts of the helix formed by residues 167 - 192 (chain A) in PDB entry 5ULW


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 167 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164A  ASN*     2.9    26.0    +      -       +      +
    166A  LEU*     1.3    77.6    -      -       -      +
    168A  VAL*     1.3    65.4    +      -       -      +
    169A  LEU*     2.8    29.9    +      -       -      +
    170A  HIS*     3.0    39.7    +      -       +      +
    171A  ILE*     3.1    14.4    +      -       -      +
    223A  PRO*     5.9     0.2    -      -       -      +
    224A  GLU*     4.2     8.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 168 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  LEU*     5.8     2.5    -      -       +      -
    166A  LEU      3.4     6.6    +      -       -      +
    167A  ASP*     1.3    73.6    +      -       -      +
    169A  LEU*     1.3    73.5    +      -       +      +
    171A  ILE*     3.3     8.8    +      -       +      +
    172A  ARG*     3.0    46.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 169 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  SER*     3.7    29.6    -      -       -      +
    167A  ASP*     2.8    23.1    +      -       -      +
    168A  VAL*     1.3    84.4    -      -       +      +
    170A  HIS*     1.3    55.9    +      -       -      +
    172A  ARG*     3.4     9.6    +      -       -      +
    173A  LEU*     3.0    36.7    +      -       +      +
    223A  PRO*     4.2    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 170 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  GLN*     3.9     2.0    -      -       -      -
    162A  SER      3.7     8.1    -      -       -      -
    163A  ILE*     3.8     7.3    -      -       +      -
    164A  ASN*     3.1    43.3    +      -       +      +
    167A  ASP*     3.0    33.3    +      -       +      +
    169A  LEU*     1.3    75.8    -      -       +      +
    171A  ILE*     1.3    59.7    +      -       +      +
    173A  LEU*     3.3     1.2    +      -       -      +
    174A  LEU*     2.8    36.6    +      -       -      +
    222A  LEU*     3.6    36.7    -      -       +      +
    223A  PRO*     4.2    13.5    -      -       +      -
    224A  GLU*     3.0    28.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 171 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  LEU*     3.7    29.8    -      -       +      -
    148A  LEU*     4.1    27.8    -      -       +      +
    151A  VAL*     4.1    17.0    -      -       +      +
    165A  LEU*     3.3    52.9    -      -       +      +
    166A  LEU      5.4     0.2    -      -       -      -
    167A  ASP      3.1    10.8    +      -       -      +
    168A  VAL*     3.7    11.2    -      -       +      +
    170A  HIS*     1.3    74.4    -      -       +      +
    172A  ARG*     1.3    64.3    +      -       +      +
    174A  LEU*     3.2     6.3    +      -       +      +
    175A  VAL*     3.0    23.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 172 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  SER*     3.4    38.8    +      -       -      +
     29A  VAL*     3.9    15.3    -      -       +      +
    133A  THR*     3.8    16.5    -      -       -      +
    136A  VAL*     3.5    25.1    -      -       +      +
    137A  GLU*     2.9    38.2    -      -       -      +
    140A  LEU*     3.6    21.0    -      -       +      +
    168A  VAL*     3.0    40.5    +      -       +      +
    169A  LEU*     3.9     9.0    -      -       +      +
    171A  ILE*     1.3    77.2    -      -       -      +
    173A  LEU*     1.3    58.6    +      -       +      +
    175A  VAL      3.5     0.2    +      -       -      -
    176A  GLY*     2.9    23.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 173 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  ARG      4.6     2.9    -      -       -      +
     29A  VAL*     4.2    13.7    -      -       +      -
    169A  LEU*     3.0    23.6    +      -       +      +
    170A  HIS      3.9     2.9    -      -       -      +
    172A  ARG*     1.3    73.7    -      -       +      +
    174A  LEU*     1.3    63.3    +      -       -      +
    176A  GLY*     3.4     2.2    +      -       -      +
    177A  SER*     3.0    24.9    +      -       -      -
    199A  VAL*     3.8    15.3    -      -       +      +
    200A  ALA*     3.7    33.9    -      -       -      +
    201A  SER*     4.4     7.0    -      -       -      +
    220A  VAL*     3.7    16.4    -      -       +      +
    221A  LEU      3.4    20.6    -      -       -      +
    222A  LEU*     4.1     7.6    -      -       +      -
    223A  PRO*     3.9    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 174 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  VAL*     4.0    23.3    -      -       +      +
    152A  THR*     4.1     7.8    -      -       -      +
    153A  VAL*     3.5    39.5    -      -       +      +
    157A  VAL*     5.1     0.4    -      -       +      -
    163A  ILE*     3.5    42.2    -      -       +      -
    165A  LEU*     4.7     3.6    -      -       +      -
    170A  HIS      2.8    22.7    +      -       -      +
    171A  ILE*     3.2     6.0    +      -       -      +
    173A  LEU*     1.3    77.3    -      -       -      +
    175A  VAL*     1.3    61.5    +      -       -      +
    177A  SER*     2.7    27.3    +      -       -      -
    178A  GLN*     2.9    11.9    +      -       -      +
    220A  VAL*     4.6     7.9    -      -       +      -
    222A  LEU*     4.6    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 175 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  VAL*     4.0    23.8    -      -       +      +
    139A  ARG*     4.0    31.9    -      -       +      -
    140A  LEU*     3.9    24.0    -      -       +      -
    143A  LEU*     5.9     1.8    -      -       +      -
    151A  VAL*     4.4    15.7    -      -       +      -
    171A  ILE      3.0    16.9    +      -       -      +
    172A  ARG      3.7     4.5    -      -       -      +
    174A  LEU*     1.3    73.5    -      -       -      +
    176A  GLY*     1.3    64.2    +      -       -      +
    178A  GLN*     2.8    28.6    +      -       -      +
    179A  ILE*     2.9    14.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 176 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  VAL*     3.8    24.9    -      -       -      -
    132A  LEU*     3.6    11.7    -      -       -      +
    136A  VAL*     3.8     7.6    -      -       -      +
    172A  ARG      2.9    11.5    +      -       -      -
    173A  LEU      3.6     5.2    -      -       -      -
    174A  LEU      3.2     0.2    -      -       -      -
    175A  VAL*     1.3    75.8    -      -       -      +
    177A  SER*     1.3    56.9    +      -       -      +
    179A  ILE*     3.5     1.0    +      -       -      -
    180A  ALA*     3.0    21.3    +      -       -      +
    199A  VAL*     3.5    14.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 177 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153A  VAL*     3.6    11.4    -      -       -      +
    154A  SER*     2.9    37.7    +      -       -      -
    173A  LEU      3.0    12.2    +      -       -      -
    174A  LEU      2.7    16.6    +      -       -      -
    176A  GLY*     1.3    74.2    -      -       -      +
    178A  GLN*     1.3    59.6    +      -       -      +
    180A  ALA      3.2     0.3    +      -       -      -
    181A  ALA      2.9    12.3    +      -       -      -
    199A  VAL*     3.9    10.1    -      -       -      +
    218A  GLN*     2.8    24.5    +      -       -      +
    219A  THR      6.2     0.2    -      -       -      -
    220A  VAL*     4.3    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 178 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  ARG*     4.7    12.6    +      -       -      +
    151A  VAL*     4.0    11.9    -      -       -      +
    152A  THR*     2.8    44.8    +      -       +      +
    154A  SER*     4.1    12.6    -      -       -      -
    174A  LEU      2.9    13.7    +      -       -      +
    175A  VAL*     2.8    21.4    +      -       -      +
    177A  SER*     1.3    75.8    +      -       -      +
    179A  ILE*     1.3    65.8    +      -       -      +
    181A  ALA*     3.2     5.1    +      -       -      +
    182A  GLU*     3.1    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 179 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  PHE*     4.2     5.2    -      -       +      -
    132A  LEU*     3.8    27.6    -      -       +      -
    135A  MET*     3.8    39.5    -      -       +      -
    136A  VAL*     3.9    26.7    -      -       +      +
    139A  ARG*     3.6    29.8    -      -       -      +
    175A  VAL*     2.9    16.8    +      -       +      +
    176A  GLY      3.9     5.6    -      -       -      +
    178A  GLN*     1.3    76.0    -      -       -      +
    180A  ALA*     1.3    64.8    +      -       -      +
    182A  GLU*     3.1     9.7    +      -       -      +
    183A  MET*     3.0    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 180 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  VAL*     4.1    13.5    -      -       +      -
    132A  LEU*     4.7     0.2    -      -       -      +
    176A  GLY      3.0    15.9    +      -       -      +
    177A  SER      3.4     9.0    -      -       -      +
    178A  GLN      3.2     0.2    -      -       -      -
    179A  ILE*     1.3    77.3    -      -       -      +
    181A  ALA*     1.3    64.2    +      -       -      +
    183A  MET*     3.3    13.9    +      -       -      +
    184A  ARG*     2.9    25.0    +      -       -      +
    197A  ALA*     4.1    11.6    -      -       +      +
    199A  VAL*     3.9    16.6    -      -       +      -
    218A  GLN*     3.6    11.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 181 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  SER*     3.3    26.2    -      -       -      +
    177A  SER      2.9     8.4    +      -       -      +
    178A  GLN*     3.2     8.7    +      -       -      +
    180A  ALA*     1.3    75.3    -      -       -      +
    182A  GLU*     1.3    53.7    +      -       +      +
    184A  ARG*     3.1     7.0    +      -       -      +
    185A  GLU*     2.7    36.6    +      -       -      +
    218A  GLN*     3.3    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 182 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  PHE*     4.1    18.9    -      -       +      -
    139A  ARG*     2.8    44.6    +      -       -      -
    178A  GLN*     3.1    17.2    +      -       -      +
    179A  ILE*     3.1     7.7    +      -       -      +
    181A  ALA*     1.3    75.6    -      -       +      +
    183A  MET*     1.3    52.1    +      -       -      +
    185A  GLU*     2.9    10.2    +      -       -      +
    186A  ALA*     2.7    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 183 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  VAL*     4.1    15.7    -      -       -      -
     33A  VAL*     4.4    12.3    -      -       +      -
    112A  LEU*     5.0     0.2    -      -       -      +
    113A  LEU*     4.0    24.9    -      -       +      +
    116A  PHE*     3.8    45.6    -      -       +      -
    130A  VAL*     4.0    19.5    -      -       +      -
    132A  LEU*     3.5    31.0    -      -       +      -
    179A  ILE*     3.0    20.2    +      -       +      +
    180A  ALA*     3.4    13.2    -      -       -      +
    182A  GLU*     1.3    74.4    -      -       -      +
    184A  ARG*     1.3    65.5    +      -       +      +
    186A  ALA*     3.1     3.6    +      -       -      +
    187A  MET*     2.9    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 184 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  VAL*     5.3     8.5    -      -       +      -
    180A  ALA      2.9    16.5    +      -       -      +
    181A  ALA*     3.6     9.1    -      -       -      +
    183A  MET*     1.3    75.1    -      -       +      +
    185A  GLU*     1.3    61.4    +      -       -      +
    187A  MET*     3.5    10.9    +      -       +      +
    188A  TYR*     3.1    23.0    +      -       -      +
    193A  LEU      4.5     1.6    -      -       -      +
    194A  THR*     6.0     0.3    -      -       -      -
    195A  GLY      3.0    27.3    +      -       -      +
    196A  CYS*     4.1    13.5    -      -       -      +
    197A  ALA*     4.1    11.0    -      -       +      +
    216A  ASN*     3.0    39.4    +      -       -      -
    217A  GLN*     4.1     9.5    -      -       -      +
    218A  GLN*     2.9    38.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 185 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  ALA      2.7    17.3    +      -       -      +
    182A  GLU*     2.9     8.9    +      -       -      +
    184A  ARG*     1.3    77.2    -      -       -      +
    186A  ALA*     1.3    57.5    +      -       -      +
    188A  TYR*     3.4     7.8    +      -       -      +
    189A  ASN*     2.9    64.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 186 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  LEU*     3.7    24.5    -      -       +      -
    116A  PHE*     4.3    12.1    -      -       +      -
    182A  GLU      2.7    15.2    +      -       -      +
    183A  MET*     3.5     8.1    -      -       -      +
    185A  GLU*     1.3    72.2    -      -       -      +
    187A  MET*     1.3    57.7    +      -       -      +
    189A  ASN*     4.4     5.2    -      -       -      +
    190A  GLN*     2.6    47.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 187 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  VAL*     4.0    19.3    -      -       +      -
     35A  LEU*     3.1    42.2    -      -       +      -
    109A  VAL*     3.9    21.5    -      -       +      -
    112A  LEU*     3.7    22.7    -      -       +      -
    113A  LEU*     4.5    10.8    -      -       +      -
    183A  MET*     2.9    20.2    +      -       -      +
    184A  ARG*     4.0     8.3    -      -       +      +
    186A  ALA*     1.3    76.7    -      -       -      +
    188A  TYR*     1.3    58.7    +      -       -      +
    191A  LEU*     3.2    14.3    +      -       +      +
    192A  GLY      3.0     9.9    +      -       -      -
    193A  LEU*     2.9    35.5    +      -       +      +
    195A  GLY*     4.8     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 188 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  ARG      3.1    16.0    +      -       -      +
    185A  GLU*     3.9     9.4    -      -       -      +
    187A  MET*     1.3    78.8    -      -       -      +
    189A  ASN*     1.3    70.7    +      -       -      +
    192A  GLY*     2.9    43.1    +      -       -      -
    193A  LEU      3.3     7.1    +      -       -      +
    194A  THR*     3.7    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 189 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  GLU*     2.9    55.4    +      -       -      +
    186A  ALA*     4.0     4.5    -      -       -      +
    188A  TYR*     1.3    89.9    -      -       -      +
    190A  GLN*     1.3    65.5    +      -       +      +
    192A  GLY      4.9     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 190 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  LEU*     3.8    28.3    -      -       +      +
    115A  GLU*     4.7     8.1    +      -       -      +
    186A  ALA*     2.6    28.9    +      -       -      +
    189A  ASN*     1.3    82.1    -      -       +      +
    191A  LEU*     1.3    73.5    +      -       +      +
    192A  GLY      3.7     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 191 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  ILE*     4.6     6.1    -      -       -      +
    105A  MET*     4.8    10.5    -      -       -      +
    108A  LYS*     3.8    32.1    -      -       +      +
    109A  VAL*     3.7    42.4    -      -       +      +
    112A  LEU*     4.4    15.7    -      -       +      -
    187A  MET*     3.2    12.4    +      -       +      +
    190A  GLN*     1.3    92.2    -      -       +      +
    192A  GLY*     1.3    64.8    +      -       -      +
    193A  LEU*     3.3    18.7    +      -       +      +
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Residues in contact with GLY 192 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  GLN*     4.1     2.1    -      -       -      +
     45A  ILE*     3.4    21.3    -      -       -      +
    187A  MET      3.0     0.4    +      -       -      -
    188A  TYR*     2.9    37.1    +      -       -      -
    189A  ASN      4.6     0.4    -      -       -      -
    190A  GLN      3.7     0.6    -      -       -      -
    191A  LEU*     1.3    77.4    -      -       -      +
    193A  LEU*     1.3    57.6    +      -       -      +
    194A  THR*     4.3     0.5    +      -       -      +
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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