Contacts of the helix formed by residues 141 - 166 (chain I) 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 I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152A  LYS*     5.0     1.3    +      -       -      +
     22I  LEU*     4.2    20.2    -      -       +      +
     25I  SER*     4.0    17.2    -      -       -      +
     79I  ARG*     3.0    25.9    +      -       -      -
     83I  LEU*     3.4    18.4    -      -       -      +
    136I  SER*     2.9    14.4    +      -       -      +
    137I  ASP*     5.6     0.2    -      -       -      -
    139I  GLU      3.2     1.2    -      -       -      -
    140I  GLY*     1.3    73.8    -      -       -      +
    142I  SER*     1.3    56.8    +      -       -      +
    143I  VAL      3.6     1.6    +      -       -      -
    144I  THR*     2.5    30.8    +      -       -      -
    145I  ASN*     3.0    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 142 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  GLN*     4.8     8.8    +      -       -      -
    133A  PHE*     3.2    41.0    -      -       -      -
    149A  ASN*     2.6    33.5    +      -       -      +
    152A  LYS*     4.8     2.7    +      -       -      +
    140I  GLY      3.1     8.9    +      -       -      -
    141I  ASP*     1.3    71.4    -      -       -      +
    143I  VAL*     1.3    66.2    +      -       -      +
    145I  ASN*     3.4     9.5    -      -       -      +
    146I  ASP*     3.0    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 143 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  ASN*     3.7    18.8    -      -       -      +
    152A  LYS*     3.3    26.9    -      -       +      +
    153A  ALA*     3.4    43.5    -      -       +      +
    156A  GLU*     4.1     0.4    -      -       -      +
     79I  ARG*     3.5    36.6    -      -       -      +
    141I  ASP*     3.3     1.4    +      -       -      -
    142I  SER*     1.3    72.0    +      -       -      +
    144I  THR*     1.3    66.6    +      -       -      +
    146I  ASP*     3.1     5.9    +      -       -      +
    147I  ILE*     3.1    30.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 144 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25I  SER*     4.6     4.5    -      -       -      -
     29I  LEU*     4.0    17.7    -      -       +      -
     79I  ARG*     3.3    19.6    +      -       -      +
     83I  LEU*     3.8     3.3    -      -       -      +
    136I  SER*     3.6    12.8    -      -       -      -
    141I  ASP*     2.5    33.7    +      -       -      +
    143I  VAL*     1.3    77.3    -      -       -      +
    145I  ASN*     1.3    62.7    +      -       -      +
    147I  ILE*     3.2    12.9    +      -       -      +
    148I  PHE*     3.2    47.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 145 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133I  PHE*     2.8    67.3    +      -       -      +
    136I  SER*     3.1    14.7    +      -       -      +
    137I  ASP*     3.4    21.6    -      -       -      +
    141I  ASP      3.0    14.0    +      -       -      +
    142I  SER*     3.4    14.9    -      -       -      +
    143I  VAL      3.1     0.2    -      -       -      -
    144I  THR*     1.3    77.6    -      -       -      +
    146I  ASP*     1.3    64.3    +      -       -      +
    148I  PHE*     3.4     1.6    +      -       -      +
    149I  ASN*     3.1    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 146 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  ASP*     4.4    15.1    -      -       -      +
    149A  ASN*     3.9    12.1    -      -       -      +
    150A  VAL*     5.2     7.8    -      -       -      +
    146E  ASP*     4.6    13.0    -      -       -      +
    142I  SER      3.0    16.2    +      -       -      +
    143I  VAL*     3.7     4.7    -      -       -      +
    145I  ASN*     1.3    75.4    +      -       -      +
    147I  ILE*     1.3    67.1    -      -       -      +
    149I  ASN*     3.1     9.7    +      -       -      +
    150I  VAL*     2.9    40.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 147 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29I  LEU*     5.5     2.7    -      -       +      -
     75I  GLU*     4.0    39.2    -      -       +      +
     76I  MET*     3.9    30.5    -      -       +      -
     79I  ARG*     3.8    37.5    -      -       +      -
    143I  VAL*     3.1    20.9    +      -       +      +
    144I  THR*     3.2     8.9    +      -       +      +
    146I  ASP*     1.3    78.5    +      -       +      +
    148I  PHE*     1.3    63.8    +      -       +      +
    150I  VAL*     3.6     4.4    +      -       -      +
    151I  ALA*     3.2    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 148 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28I  VAL*     4.0    24.2    -      -       +      -
     29I  LEU*     3.7    21.1    -      -       +      -
     32I  ALA*     4.3     6.3    -      -       +      -
     76I  MET*     3.9    22.0    -      -       +      -
    128I  LEU*     4.7     0.9    -      -       +      -
    129I  PHE*     3.6    50.6    -      +       -      +
    132I  GLY*     3.5    32.3    -      -       -      -
    133I  PHE*     3.9     5.8    -      -       -      +
    136I  SER*     4.5     0.2    -      -       -      -
    144I  THR*     3.2    42.4    +      -       +      -
    145I  ASN      3.9     5.6    -      -       -      +
    147I  ILE*     1.3    79.1    -      -       +      +
    149I  ASN*     1.3    57.1    +      -       -      +
    151I  ALA*     3.4     3.5    +      -       -      +
    152I  LYS*     2.9    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 149 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142E  SER*     2.7    52.3    +      -       -      +
    143E  VAL*     3.5    17.3    -      -       -      +
    146E  ASP*     3.9    15.2    -      -       -      +
    133I  PHE*     3.9    12.1    -      -       +      -
    145I  ASN      3.1    17.3    +      -       -      +
    146I  ASP*     3.5    12.9    -      -       -      +
    148I  PHE*     1.3    78.5    -      -       -      +
    150I  VAL*     1.3    64.0    +      -       +      +
    152I  LYS*     3.8     6.2    -      -       -      +
    153I  ALA*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 150 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146E  ASP*     4.7    11.7    -      -       -      +
     72I  TYR*     5.2     2.6    -      -       +      -
     75I  GLU*     5.6     7.9    -      -       -      +
    146I  ASP*     2.9    37.8    +      -       -      +
    147I  ILE*     4.1     4.9    -      -       -      +
    149I  ASN*     1.3    73.2    -      -       +      +
    151I  ALA*     1.3    67.4    +      -       -      +
    153I  ALA*     3.3     7.6    +      -       +      +
    154I  SER*     3.3    21.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 151 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72I  TYR*     3.4    37.3    +      -       +      -
     75I  GLU*     5.6     1.3    +      -       -      +
     76I  MET*     3.9     9.2    -      -       +      -
    129I  PHE*     3.5    25.1    -      -       +      -
    147I  ILE      3.2    16.4    +      -       -      +
    148I  PHE      3.8     1.8    -      -       -      +
    150I  VAL*     1.3    80.3    -      -       -      +
    152I  LYS*     1.3    63.7    +      -       -      +
    154I  SER      3.2     2.3    +      -       -      -
    155I  ILE*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 152 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79E  ARG*     4.0     7.7    -      -       -      +
    141E  ASP*     5.1     1.0    +      -       -      -
    142E  SER*     5.4     3.4    +      -       -      +
    143E  VAL*     3.5    17.6    -      -       +      +
    126I  ALA*     4.1    21.8    -      -       -      +
    129I  PHE*     3.5    17.2    -      -       +      +
    130I  GLN*     3.3    35.7    -      -       -      +
    133I  PHE*     6.0     2.2    -      -       +      -
    148I  PHE      2.9    19.0    +      -       -      +
    149I  ASN*     3.8    10.1    -      -       -      +
    151I  ALA*     1.3    75.6    -      -       -      +
    153I  ALA*     1.3    63.9    +      -       -      +
    155I  ILE*     3.3     3.3    +      -       -      +
    156I  GLU*     2.8    72.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 153 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79E  ARG*     5.1     1.6    +      -       -      -
    143E  VAL*     3.5    34.4    -      -       +      +
    149I  ASN      3.1    13.0    +      -       -      +
    150I  VAL*     3.5    11.7    -      -       +      +
    151I  ALA      3.2     0.2    -      -       -      -
    152I  LYS*     1.3    78.9    -      -       -      +
    154I  SER*     1.3    61.0    +      -       -      +
    156I  GLU*     3.5     4.6    +      -       -      +
    157I  LYS*     3.2    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 154 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68I  GLU*     2.5    34.4    +      -       -      -
     72I  TYR*     3.4     7.2    -      -       -      -
    150I  VAL*     3.3     8.6    +      -       -      -
    151I  ALA      3.2     3.4    +      -       -      -
    153I  ALA*     1.3    76.4    -      -       -      +
    155I  ILE*     1.3    65.7    -      -       -      +
    157I  LYS*     3.1    11.6    +      -       -      +
    158I  HIS*     3.0    27.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 155 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68I  GLU*     3.9     5.4    -      -       -      +
     69I  ILE*     4.3    13.9    -      -       +      -
     72I  TYR*     3.4    33.2    -      -       +      +
    122I  PHE*     3.5    50.7    -      -       +      +
    125I  LEU*     4.7     4.0    -      -       +      -
    126I  ALA*     4.4     8.1    -      -       +      +
    129I  PHE*     3.9    12.8    -      -       +      -
    151I  ALA      3.0    17.0    +      -       -      +
    152I  LYS*     3.9     5.4    -      -       -      +
    154I  SER*     1.3    75.7    -      -       -      +
    156I  GLU*     1.3    59.3    +      -       -      +
    158I  HIS*     3.1    13.5    +      -       +      +
    159I  ILE*     3.0    28.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 156 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79E  ARG*     2.7    37.3    +      -       -      +
     82E  THR*     3.4    12.3    -      -       +      +
    143E  VAL*     4.0     2.3    -      -       -      +
    126I  ALA*     4.3    14.4    -      -       +      +
    152I  LYS*     2.8    60.6    +      -       +      +
    153I  ALA      3.8     3.8    -      -       -      +
    155I  ILE*     1.3    74.9    -      -       -      +
    157I  LYS*     1.3    64.1    +      -       -      +
    159I  ILE*     3.2     9.4    +      -       -      +
    160I  TRP      3.2    17.2    +      -       -      -
    172I  LEU*     3.9    31.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 157 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75E  GLU*     4.6    22.7    +      -       -      -
     78E  GLU*     2.8    45.8    +      -       -      +
     79E  ARG*     4.7     3.2    -      -       -      +
     82E  THR*     4.3    11.5    +      -       -      +
    153I  ALA      3.2    13.9    +      -       -      +
    154I  SER*     3.1    15.1    +      -       -      +
    156I  GLU*     1.3    77.1    -      -       -      +
    158I  HIS*     1.3    68.6    +      -       +      +
    160I  TRP*     3.3    25.0    +      -       +      +
    161I  MET*     3.2    25.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 158 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61I  LYS*     6.3     0.4    -      -       -      -
     65I  TYR*     3.6    35.7    +      +       -      +
     68I  GLU*     2.6    37.6    +      -       -      -
    122I  PHE*     3.7    22.9    -      +       +      -
    154I  SER*     3.0    24.0    +      -       -      -
    155I  ILE*     3.1    12.3    +      -       +      +
    157I  LYS*     1.3    80.6    -      -       +      +
    159I  ILE*     1.3    59.5    +      -       -      +
    161I  MET*     3.3    14.2    +      -       -      +
    162I  LEU*     2.9    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 159 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119I  VAL*     4.5     8.3    -      -       +      +
    122I  PHE*     3.7    21.3    -      -       +      +
    123I  ARG*     3.7    47.6    -      -       +      +
    126I  ALA*     4.5     5.4    -      -       +      -
    155I  ILE*     3.0    20.5    +      -       +      +
    156I  GLU*     3.2    10.2    +      -       -      +
    158I  HIS*     1.3    76.7    -      -       -      +
    160I  TRP*     1.3    58.6    +      -       -      +
    162I  LEU*     3.9     6.0    -      -       -      +
    163I  GLN*     2.9    42.6    +      -       +      +
    170I  PRO      3.7    23.8    -      -       -      +
    172I  LEU*     3.9    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 160 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78E  GLU*     3.8    35.9    -      -       +      -
     81E  ILE*     3.5    38.8    -      -       +      +
     82E  THR*     3.7    26.7    -      -       -      +
     48G  TRP*     4.8     6.4    +      +       -      -
     50G  MET      5.3     0.8    +      -       -      -
     51G  ARG*     6.3     1.1    -      -       -      -
     55G  PHE*     4.1    12.0    -      +       -      -
     59G  HIS*     3.7    35.7    -      +       -      -
    107G  TYR*     5.9     0.4    -      -       -      -
    156I  GLU      3.2     6.5    +      -       -      +
    157I  LYS*     3.4    31.9    -      -       +      +
    159I  ILE*     1.3    79.6    -      -       -      +
    161I  MET*     1.3    68.1    +      -       +      +
    163I  GLN*     3.8     1.4    -      -       -      +
    164I  ALA*     2.9    37.1    +      -       +      +
    168I  GLN      6.1     0.2    -      -       -      -
    170I  PRO*     3.8    29.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 161 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78E  GLU*     5.6     2.7    -      -       -      +
     55G  PHE*     3.8    22.6    -      -       +      -
     56G  MET*     3.9    30.0    -      -       +      +
     59G  HIS*     3.4    37.9    -      -       +      +
     60G  PRO*     5.9     0.7    -      -       +      -
     61I  LYS*     6.1     0.7    -      -       -      -
     65I  TYR*     5.3     2.5    -      -       -      +
    157I  LYS*     3.2    19.7    +      -       +      +
    158I  HIS*     3.3    16.6    +      -       -      +
    160I  TRP*     1.3    94.2    -      -       +      +
    162I  LEU*     1.3    65.5    +      -       -      +
    164I  ALA*     3.3     3.2    +      -       -      +
    165I  GLU*     2.9    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 162 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58I  TRP*     3.5    29.4    -      -       +      -
     62I  MET*     5.0     0.2    -      -       +      -
     65I  TYR*     3.7    20.0    -      -       +      +
    115I  LEU*     4.0    28.0    -      -       +      +
    118I  VAL*     4.0    12.6    -      -       +      -
    119I  VAL*     3.5    22.7    -      -       +      +
    122I  PHE*     3.9    28.9    -      -       +      -
    158I  HIS      2.9    21.5    +      -       -      +
    159I  ILE*     3.9     1.6    -      -       -      +
    161I  MET*     1.3    76.3    -      -       -      +
    163I  GLN*     1.3    63.9    +      -       -      +
    165I  GLU*     3.2     7.5    +      -       -      +
    166I  LEU*     3.1    27.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 163 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116I  ALA*     5.7     0.4    -      -       -      +
    119I  VAL*     3.6    26.3    -      -       +      +
    123I  ARG*     3.4    23.6    +      -       -      +
    159I  ILE*     2.9    25.3    +      -       +      +
    160I  TRP      3.8     3.4    -      -       -      +
    162I  LEU*     1.3    77.6    -      -       -      +
    164I  ALA*     1.3    56.4    +      -       -      +
    166I  LEU*     3.0    18.0    +      -       -      +
    167I  GLY      3.0     5.4    +      -       -      -
    168I  GLN*     2.7    59.7    +      -       -      +
    169I  ALA      3.0    32.5    -      -       -      +
    170I  PRO*     3.9     5.8    -      -       +      +
    171I  LYS*     3.4     2.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 164 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50G  MET      3.7    21.3    -      -       -      +
     51G  ARG*     3.3     9.9    -      -       +      +
     52G  GLY      2.6    32.7    +      -       -      -
     55G  PHE*     3.8    18.2    -      -       +      -
    160I  TRP*     2.9    26.2    +      -       +      +
    161I  MET      3.6     5.2    -      -       -      +
    162I  LEU      3.3     0.2    -      -       -      -
    163I  GLN*     1.3    72.5    -      -       -      +
    165I  GLU*     1.3    56.4    +      -       -      +
    167I  GLY      2.8     8.5    +      -       -      -
    168I  GLN      3.5     8.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 165 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52G  GLY      3.1    24.7    -      -       -      -
     53G  ARG*     2.9    34.5    +      -       -      +
     54G  GLY*     2.8    25.1    +      -       -      -
     55G  PHE*     3.2     7.4    +      -       +      +
     56G  MET*     2.9    29.6    +      -       -      +
     58I  TRP*     3.4    40.5    +      -       +      +
    115I  LEU*     3.9    10.3    -      -       +      -
    161I  MET      2.9    13.7    +      -       -      +
    162I  LEU*     3.5     9.0    -      -       -      +
    164I  ALA*     1.3    76.0    -      -       -      +
    166I  LEU*     1.3    57.1    +      -       -      +
    167I  GLY      3.3     1.0    +      -       -      -
   1174I  EPE      4.4     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 166 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52G  GLY*     5.2     0.2    -      -       -      -
     53G  ARG*     5.0     2.0    -      -       -      +
    112I  GLU*     3.8    44.2    -      -       +      +
    115I  LEU*     4.1    18.6    -      -       +      -
    116I  ALA*     4.0    29.6    -      -       +      +
    119I  VAL*     4.5     1.3    -      -       +      -
    162I  LEU      3.1    14.1    +      -       -      +
    163I  GLN*     3.0    27.3    +      -       -      +
    164I  ALA      3.0     0.8    -      -       -      -
    165I  GLU*     1.3    78.7    -      -       -      +
    167I  GLY*     1.3    60.1    +      -       -      -
    168I  GLN*     3.3    21.7    +      -       -      +
----------------------------------------------------------
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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