Contacts of the helix formed by residues 141 - 166 (chain F) in PDB entry 1UMN


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 141 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22F  LEU*     3.9    22.4    -      -       +      +
     25F  SER*     3.9    14.4    -      -       -      +
     79F  ARG*     3.0    24.8    +      -       -      -
     83F  LEU*     3.4    21.5    -      -       -      +
    136F  SER*     2.9    13.9    +      -       -      +
    137F  ASP*     5.7     0.2    -      -       -      -
    139F  GLU      3.3     1.0    -      -       -      -
    140F  GLY*     1.3    73.8    -      -       -      +
    142F  SER*     1.3    57.8    +      -       -      +
    143F  VAL      3.6     1.0    +      -       -      -
    144F  THR*     2.6    31.3    +      -       -      -
    145F  ASN*     3.0    26.4    +      -       -      +
    152K  LYS*     5.1     0.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 142 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140F  GLY      3.1     9.2    +      -       -      -
    141F  ASP*     1.3    71.4    +      -       -      +
    143F  VAL*     1.3    65.3    +      -       -      +
    145F  ASN*     3.4    10.2    -      -       -      +
    146F  ASP*     3.0    18.5    +      -       -      +
    130K  GLN*     4.9     7.8    +      -       -      -
    133K  PHE*     3.2    40.6    -      -       -      -
    149K  ASN*     2.6    34.4    +      -       -      +
    152K  LYS*     5.1     2.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 143 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79F  ARG*     3.5    35.7    -      -       -      +
    141F  ASP*     3.3     1.2    +      -       -      -
    142F  SER*     1.3    76.0    +      -       -      +
    144F  THR*     1.3    64.8    +      -       -      +
    146F  ASP*     3.2     6.5    +      -       -      +
    147F  ILE*     3.0    30.1    +      -       +      +
    149K  ASN*     3.6    21.8    -      -       -      +
    152K  LYS*     3.3    26.7    -      -       -      +
    153K  ALA*     3.4    40.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 144 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25F  SER*     4.6     5.2    -      -       -      -
     29F  LEU*     3.9    19.5    -      -       +      +
     79F  ARG*     3.3    19.8    +      -       -      +
    136F  SER*     3.7    11.4    -      -       -      -
    141F  ASP*     2.6    33.6    +      -       -      +
    143F  VAL*     1.3    77.5    -      -       -      +
    145F  ASN*     1.3    64.5    +      -       -      +
    147F  ILE*     3.2    12.4    +      -       -      +
    148F  PHE*     3.1    48.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 145 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133F  PHE*     2.9    65.5    +      -       -      +
    136F  SER*     3.0    15.8    +      -       -      +
    137F  ASP*     3.6    21.5    -      -       -      +
    141F  ASP      3.0    13.2    +      -       -      +
    142F  SER*     3.4    15.0    -      -       -      +
    144F  THR*     1.3    78.0    -      -       -      +
    146F  ASP*     1.3    59.4    +      -       -      +
    148F  PHE*     3.3     4.3    +      -       -      +
    149F  ASN*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 146 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146D  ASP*     4.5    10.9    -      -       -      +
    142F  SER      3.0    14.3    +      -       -      +
    143F  VAL*     3.6     8.2    -      -       -      +
    145F  ASN*     1.3    75.7    +      -       -      +
    147F  ILE*     1.3    70.6    +      -       -      +
    149F  ASN*     3.1     7.7    +      -       -      +
    150F  VAL*     3.0    41.4    +      -       -      +
    146K  ASP*     4.5    11.0    -      -       -      +
    149K  ASN*     3.8    12.6    -      -       -      +
    150K  VAL*     5.9     4.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 147 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29F  LEU*     5.3     2.2    -      -       +      -
     75F  GLU*     3.9    31.0    -      -       +      +
     76F  MET*     3.7    32.3    -      -       +      -
     79F  ARG*     3.7    38.6    -      -       +      -
    143F  VAL*     3.0    24.8    +      -       +      +
    144F  THR*     3.2     8.7    +      -       +      +
    146F  ASP*     1.3    81.9    -      -       -      +
    148F  PHE*     1.3    65.8    +      -       +      +
    150F  VAL*     3.5     4.7    +      -       -      +
    151F  ALA*     3.2    20.6    +      -       -      +
    157K  LYS*     6.3     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 148 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28F  VAL*     4.0    21.5    -      -       +      -
     29F  LEU*     3.7    25.1    -      -       +      -
     32F  ALA*     4.3     6.3    -      -       +      -
     76F  MET*     3.7    30.1    -      -       +      -
    128F  LEU*     4.8     0.7    -      -       +      -
    129F  PHE*     3.5    44.6    -      +       -      +
    132F  GLY*     3.5    30.5    -      -       -      -
    133F  PHE*     3.8     6.1    -      -       -      +
    144F  THR*     3.1    45.2    +      -       +      -
    145F  ASN      3.7     5.6    -      -       -      +
    147F  ILE*     1.3    78.8    -      -       +      +
    149F  ASN*     1.3    57.4    +      -       -      +
    151F  ALA*     3.9     0.2    -      -       -      +
    152F  LYS*     2.9    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 149 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142D  SER*     2.7    49.3    +      -       -      +
    143D  VAL*     3.5    15.6    -      -       -      +
    146D  ASP*     3.8    15.6    -      -       -      +
    133F  PHE*     3.8    16.9    -      -       +      -
    145F  ASN      3.0    13.8    +      -       -      +
    146F  ASP*     3.1    12.9    +      -       -      +
    148F  PHE*     1.3    76.6    -      -       -      +
    150F  VAL*     1.3    59.3    +      -       +      +
    152F  LYS*     3.4     7.5    +      -       -      +
    153F  ALA*     3.0    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 150 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146D  ASP*     5.5     9.4    -      -       -      +
     72F  TYR*     6.2     1.1    -      -       +      -
    146F  ASP*     3.0    39.9    +      -       -      +
    147F  ILE*     3.9     4.3    -      -       -      +
    149F  ASN*     1.3    78.6    -      -       +      +
    151F  ALA*     1.3    62.2    +      -       -      +
    153F  ALA*     3.4     7.6    +      -       -      +
    154F  SER*     3.3    21.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 151 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72F  TYR*     3.3    41.7    +      -       +      -
     76F  MET*     3.8    10.5    -      -       +      -
    129F  PHE*     3.5    22.0    -      -       +      -
    147F  ILE      3.2    17.7    +      -       -      +
    148F  PHE      3.9     1.1    -      -       -      +
    150F  VAL*     1.3    74.1    -      -       -      +
    152F  LYS*     1.3    66.6    +      -       -      +
    153F  ALA      3.4     0.2    +      -       -      -
    154F  SER      3.5     0.7    +      -       -      -
    155F  ILE*     3.1    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 152 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  ARG*     4.0     6.9    -      -       -      +
    141D  ASP*     5.1     1.4    +      -       -      -
    142D  SER*     4.9     2.6    +      -       -      +
    143D  VAL*     3.4    19.0    -      -       +      +
    126F  ALA*     3.9    22.2    -      -       +      +
    129F  PHE*     3.6    14.3    -      -       +      -
    130F  GLN*     3.2    41.6    -      -       -      +
    133F  PHE*     5.9     2.2    -      -       +      -
    148F  PHE      2.9    19.0    +      -       -      +
    149F  ASN*     3.7    10.3    -      -       -      +
    151F  ALA*     1.3    78.2    -      -       -      +
    153F  ALA*     1.3    56.4    +      -       -      +
    155F  ILE*     3.4     3.2    +      -       -      +
    156F  GLU*     2.9    74.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 153 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  ARG*     4.9     2.1    +      -       -      -
    143D  VAL*     3.5    34.9    -      -       +      +
    147D  ILE*     6.4     0.2    -      -       +      -
    149F  ASN      3.0    16.1    +      -       -      +
    150F  VAL*     3.6     8.7    -      -       -      +
    151F  ALA      3.2     0.2    -      -       -      -
    152F  LYS*     1.3    77.5    -      -       -      +
    154F  SER*     1.3    63.2    +      -       -      +
    156F  GLU*     3.4     4.6    +      -       -      +
    157F  LYS*     3.1    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 154 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68F  GLU*     2.5    34.5    +      -       -      -
     72F  TYR*     3.8     7.0    -      -       -      -
    150F  VAL*     3.3    11.9    +      -       -      -
    153F  ALA*     1.3    77.4    -      -       -      +
    155F  ILE*     1.3    65.5    +      -       -      +
    157F  LYS*     3.1    12.9    +      -       -      +
    158F  HIS*     3.0    27.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 155 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68F  GLU*     4.2     5.2    -      -       -      +
     69F  ILE*     4.4     5.4    -      -       +      -
     72F  TYR*     3.0    37.9    -      -       +      +
    122F  PHE*     3.5    65.7    -      -       +      +
    125F  LEU*     4.8     2.9    -      -       +      -
    126F  ALA*     4.0    15.7    -      -       +      +
    129F  PHE*     4.1     9.0    -      -       +      -
    151F  ALA      3.1    15.5    +      -       -      +
    152F  LYS*     3.8     4.3    -      -       -      +
    154F  SER*     1.3    76.7    -      -       -      +
    156F  GLU*     1.3    64.4    +      -       -      +
    158F  HIS*     3.1     7.3    +      -       +      +
    159F  ILE*     3.0    22.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 156 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  ARG*     2.8    37.3    +      -       -      +
     82D  THR*     3.6    10.6    -      -       +      +
    143D  VAL*     3.9     2.6    -      -       -      +
    126F  ALA*     4.2    17.3    -      -       +      +
    152F  LYS*     2.9    59.3    +      -       -      +
    153F  ALA      3.8     3.6    -      -       -      +
    155F  ILE*     1.3    76.1    -      -       -      +
    157F  LYS*     1.3    62.4    +      -       -      +
    159F  ILE*     3.1    11.2    +      -       -      +
    160F  TRP      3.1    18.0    +      -       -      -
    172F  LEU*     4.0    31.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 157 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  GLU*     4.6    16.5    +      -       -      -
     78D  GLU*     2.7    47.7    +      -       -      +
     79D  ARG*     4.7     3.0    -      -       -      +
     82D  THR*     4.3    11.5    +      -       -      +
    147D  ILE*     6.3     1.2    -      -       -      +
    153F  ALA      3.1    14.6    +      -       -      +
    154F  SER*     3.1    13.9    +      -       -      +
    156F  GLU*     1.3    77.9    -      -       -      +
    158F  HIS*     1.3    65.4    +      -       +      +
    160F  TRP*     3.3    21.8    +      -       +      +
    161F  MET*     3.2    28.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 158 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65F  TYR*     3.6    35.7    +      +       -      +
     68F  GLU*     2.8    38.0    +      -       -      -
    122F  PHE*     3.7    23.1    -      +       +      -
    154F  SER*     3.0    26.4    +      -       -      -
    155F  ILE*     3.1    11.2    +      -       +      +
    157F  LYS*     1.3    78.0    -      -       +      +
    159F  ILE*     1.3    61.1    +      -       -      +
    161F  MET*     3.3    13.1    +      -       -      +
    162F  LEU*     2.9    34.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 159 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119F  VAL*     4.5     8.1    -      -       +      +
    122F  PHE*     3.7    24.2    -      -       +      +
    123F  ARG*     3.8    47.3    -      -       +      +
    126F  ALA*     4.6     4.5    -      -       +      -
    155F  ILE*     3.0    22.6    +      -       +      +
    156F  GLU*     3.1     9.8    +      -       -      +
    158F  HIS*     1.3    73.3    -      -       -      +
    160F  TRP*     1.3    68.7    +      -       -      +
    162F  LEU*     4.0     5.8    -      -       -      +
    163F  GLN*     2.8    31.5    +      -       +      +
    170F  PRO*     3.9     8.5    -      -       +      +
    172F  LEU*     3.8    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 160 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  TRP*     4.7     5.3    +      +       -      -
     50B  MET      5.4     0.6    +      -       -      -
     51B  ARG*     6.4     0.2    -      -       -      -
     55B  PHE*     3.9    14.1    -      +       -      -
     59B  HIS*     3.5    36.6    -      +       -      -
    107B  TYR*     6.0     0.4    -      -       -      -
     78D  GLU*     3.8    33.7    -      -       +      -
     81D  ILE*     3.3    40.9    -      -       +      +
     82D  THR*     3.5    27.4    -      -       +      +
    156F  GLU      3.1     9.0    +      -       -      +
    157F  LYS*     3.4    25.1    -      -       +      +
    158F  HIS      3.2     0.2    -      -       -      -
    159F  ILE*     1.3    76.7    -      -       -      +
    161F  MET*     1.3    77.5    +      -       +      +
    163F  GLN*     3.3     2.3    +      -       -      +
    164F  ALA*     2.8    36.9    +      -       +      +
    168F  GLN      5.0     0.8    -      -       -      +
    170F  PRO*     3.9    28.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 161 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  PHE*     3.7    24.1    -      -       +      -
     56B  MET*     4.0    28.0    -      -       +      +
     59B  HIS*     3.6    26.0    -      -       +      +
     78D  GLU*     5.3     3.6    -      -       -      +
     58F  TRP*     4.9     0.9    -      -       -      -
     65F  TYR*     5.2     2.0    -      -       -      +
    157F  LYS*     3.2    23.3    +      -       +      +
    158F  HIS*     3.8    16.2    -      -       -      +
    160F  TRP*     1.3   101.3    -      -       +      +
    162F  LEU*     1.3    62.2    +      -       -      +
    164F  ALA*     3.3     2.6    +      -       -      +
    165F  GLU*     3.0    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 162 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58F  TRP*     3.5    28.3    -      -       +      -
     62F  MET*     4.9     0.2    -      -       +      -
     65F  TYR*     3.7    19.5    -      -       +      +
    115F  LEU*     3.9    30.7    -      -       +      +
    118F  VAL*     3.9    24.2    -      -       +      -
    119F  VAL*     3.5    21.5    -      -       +      -
    122F  PHE*     3.9    18.4    -      -       +      -
    158F  HIS      2.9    22.2    +      -       -      +
    159F  ILE*     4.0     1.6    -      -       -      +
    161F  MET*     1.3    75.6    -      -       -      +
    163F  GLN*     1.3    63.9    +      -       -      +
    165F  GLU*     3.3     7.2    +      -       -      +
    166F  LEU*     3.0    29.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 163 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119F  VAL*     3.6    26.1    -      -       +      +
    120F  GLU*     4.9     3.0    +      -       -      -
    123F  ARG*     3.3    24.9    +      -       -      +
    159F  ILE*     2.8    25.1    +      -       +      +
    160F  TRP      3.7     2.9    -      -       -      +
    162F  LEU*     1.3    77.2    -      -       -      +
    164F  ALA*     1.3    56.4    +      -       -      +
    166F  LEU*     3.0    17.7    +      -       -      +
    167F  GLY      3.0     5.4    +      -       -      -
    168F  GLN*     2.8    58.3    +      -       -      +
    169F  ALA      3.0    29.7    -      -       -      +
    170F  PRO*     3.9     8.7    -      -       +      +
    171F  LYS*     3.5     2.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 164 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  MET      3.8     8.3    -      -       -      +
     51B  ARG*     3.4     9.3    -      -       +      +
     52B  GLY      2.7    30.2    +      -       -      -
     55B  PHE*     3.6    33.0    -      -       +      -
    160F  TRP*     2.8    24.5    +      -       +      +
    161F  MET      3.6     5.8    -      -       -      +
    162F  LEU      3.2     0.2    -      -       -      -
    163F  GLN*     1.3    73.4    -      -       -      +
    165F  GLU*     1.3    60.7    +      -       -      +
    167F  GLY*     2.9     6.6    +      -       -      -
    168F  GLN      3.6     8.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 165 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  GLY*     3.2    24.4    -      -       -      -
     53B  ARG*     2.9    35.0    +      -       -      +
     54B  GLY*     2.9    25.3    +      -       -      -
     55B  PHE*     3.3     6.6    +      -       +      +
     56B  MET*     3.0    29.6    +      -       -      +
     58F  TRP*     3.4    40.2    +      -       +      +
    115F  LEU*     3.9    13.2    -      -       +      -
    161F  MET      3.0    13.6    +      -       -      +
    162F  LEU      3.5     9.6    -      -       -      +
    164F  ALA*     1.3    75.1    -      -       -      +
    166F  LEU*     1.3    57.5    +      -       -      +
    167F  GLY      3.2     2.1    +      -       -      -
   1174J  EPE      4.6     3.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 166 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53B  ARG*     5.2     7.0    -      -       -      +
    112F  GLU*     4.0    36.6    -      -       +      +
    115F  LEU*     4.0    23.3    -      -       +      -
    116F  ALA*     4.1    27.4    -      -       +      +
    119F  VAL*     4.3     3.6    -      -       +      -
    162F  LEU      3.0    18.2    +      -       -      +
    163F  GLN*     3.0    28.2    +      -       -      +
    165F  GLU*     1.3    77.0    -      -       +      +
    167F  GLY*     1.3    60.7    +      -       -      +
    168F  GLN*     3.4    21.4    +      -       -      +
----------------------------------------------------------
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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