Contacts of the helix formed by residues 128 - 156 (chain A) in PDB entry 1S13


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 LEU 128 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  ARG*     3.9     4.0    -      -       -      +
    121A  VAL*     3.7     7.9    -      -       +      +
    125A  GLU*     3.0    39.8    +      -       +      +
    126A  PRO      2.7     6.5    +      -       -      -
    127A  GLU*     1.3    83.3    -      -       +      +
    129A  LEU*     1.3    57.5    +      -       -      +
    130A  VAL      3.1     3.1    -      -       -      -
    131A  ALA*     2.8    28.6    +      -       -      +
    132A  HIS*     3.8     1.7    +      -       -      -
    195A  VAL*     4.2     2.0    -      -       +      +
    198A  ARG*     3.6    26.9    -      -       +      +
    199A  VAL*     3.5    40.2    -      -       +      +
    202A  GLU*     3.7    33.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  LEU*     4.0    20.6    -      -       +      -
     64A  GLU*     3.8    31.4    -      -       +      +
     65A  ILE*     3.8    27.1    -      -       +      +
     68A  ASN*     4.4    10.1    -      -       +      +
     74A  PHE*     3.8    22.4    -      -       +      -
    118A  LEU*     4.8     4.9    -      -       +      +
    121A  VAL*     3.4    23.8    -      -       +      +
    122A  GLY*     4.6     2.5    -      -       -      +
    126A  PRO*     2.8    17.4    +      -       +      +
    128A  LEU*     1.3    77.6    -      -       -      +
    130A  VAL*     1.3    61.3    +      -       -      +
    132A  HIS*     3.0     9.1    +      -       +      +
    133A  ALA*     3.0    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LEU*     5.3     1.8    -      -       +      -
     17A  LEU*     6.0     0.2    -      -       -      -
     73A  VAL      4.3     3.8    -      -       -      +
     74A  PHE*     3.8    12.9    -      -       +      -
     77A  VAL*     3.3    37.7    -      -       +      -
    126A  PRO      4.6     0.2    +      -       -      -
    127A  GLU      3.7    19.3    -      -       -      +
    128A  LEU      4.3     0.7    -      -       -      -
    129A  LEU*     1.3    74.0    -      -       -      +
    131A  ALA*     1.3    56.4    +      -       -      +
    133A  ALA*     3.7     2.4    -      -       +      +
    134A  TYR*     2.7    38.3    +      -       -      +
    182A  TYR*     5.1     1.2    +      -       +      +
    186A  MET*     4.9    10.7    -      -       +      +
    189A  LEU*     3.6    32.8    -      -       +      -
    191A  MET*     4.5     2.5    -      -       +      -
    199A  VAL*     4.4    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  LEU*     5.4     2.0    -      -       -      -
    128A  LEU      2.8    16.1    +      -       -      +
    130A  VAL*     1.3    81.7    -      -       -      +
    132A  HIS*     1.3    51.8    +      -       -      +
    134A  TYR*     3.6     6.0    -      -       -      +
    135A  THR*     2.5    37.4    +      -       -      -
    199A  VAL*     3.4    36.6    -      -       +      +
    202A  GLU*     3.7    17.0    -      -       +      -
    203A  ALA*     3.9    10.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  LEU*     4.2     8.9    -      -       +      +
    114A  TYR*     4.1    12.3    -      +       -      -
    117A  ARG*     4.3     3.4    -      -       +      +
    118A  LEU*     3.4    31.7    -      -       +      +
    121A  VAL*     3.8    20.4    -      -       +      +
    128A  LEU      3.8     3.8    +      -       -      -
    129A  LEU*     3.0    10.0    +      -       +      +
    131A  ALA*     1.3    75.2    -      -       -      +
    133A  ALA*     1.3    66.2    +      -       -      +
    135A  THR*     3.8     3.3    -      -       -      -
    136A  ARG*     3.0    31.2    +      -       +      +
    202A  GLU*     2.8    44.7    +      -       +      +
    206A  ALA*     3.7    26.3    +      -       +      +
    209A  LEU*     4.3    12.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  LEU*     4.3     8.0    -      -       +      +
     65A  ILE*     4.7     3.4    -      -       +      -
     74A  PHE*     3.9    23.8    -      -       +      -
    129A  LEU      3.0    13.8    +      -       -      +
    130A  VAL*     3.7     4.5    -      -       -      +
    132A  HIS*     1.3    76.6    -      -       -      +
    134A  TYR*     1.3    58.2    +      -       -      +
    137A  TYR*     2.9    51.7    +      -       +      +
    182A  TYR*     3.4    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  SER*     4.5     4.7    +      -       -      -
     17A  LEU*     3.8    34.7    +      -       +      -
     18A  LYS*     3.6    18.4    -      -       -      -
     21A  THR*     4.5     4.6    +      -       +      -
    130A  VAL      2.7    19.0    +      -       -      +
    131A  ALA*     3.6     4.3    -      -       -      +
    133A  ALA*     1.3    74.9    -      -       -      +
    135A  THR*     1.3    83.5    +      -       -      +
    138A  LEU*     3.1    43.5    +      -       +      +
    139A  GLY      3.6     0.7    +      -       -      -
    182A  TYR*     4.1    10.7    +      -       +      -
    183A  ARG*     5.9     0.9    -      -       +      -
    186A  MET*     3.5    31.6    -      -       +      -
    203A  ALA*     4.8     4.5    -      -       +      -
    207A  PHE*     5.5     0.4    -      +       -      -
    300A  2FH      2.6    63.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  TYR*     5.1     1.8    -      -       -      +
    131A  ALA      2.5    22.2    +      -       -      -
    132A  HIS*     3.8     4.7    -      -       -      -
    134A  TYR*     1.3    84.3    -      -       -      +
    136A  ARG*     1.3    64.5    +      -       -      +
    139A  GLY*     3.4    15.2    -      -       -      -
    203A  ALA*     4.0     8.8    +      -       -      +
    206A  ALA*     3.7    29.5    -      -       +      +
    207A  PHE*     4.1    12.7    -      -       +      -
    210A  ASN*     4.7     0.9    -      -       -      +
    300A  2FH      3.2    51.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LEU*     4.0    16.8    -      -       -      +
     57A  ILE*     3.7    23.0    -      -       +      +
     58A  TYR*     3.6    28.1    +      -       -      +
     61A  LEU*     4.0    18.8    -      -       +      -
    114A  TYR*     3.3    27.9    +      -       +      +
    132A  HIS*     3.0    19.8    +      -       +      +
    135A  THR*     1.3    76.2    +      -       -      +
    137A  TYR*     1.3    56.3    +      -       -      +
    139A  GLY      3.2     0.7    +      -       -      -
    140A  ASP*     2.7    76.7    +      -       -      +
    210A  ASN*     3.0    28.5    +      -       -      +
    214A  PHE*     6.4     0.2    -      -       -      -
    300A  2FH      4.0    16.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  TYR*     3.3    29.4    -      +       -      -
     61A  LEU*     4.0     8.9    -      -       +      +
     62A  GLU*     2.7    33.0    +      -       -      +
     65A  ILE*     3.8    28.1    -      -       +      +
     83A  LEU*     3.3    65.7    +      -       +      -
     84A  HIS*     4.6     1.2    -      -       -      -
     85A  ARG*     4.9     0.7    -      -       +      -
    133A  ALA*     2.9    34.5    +      -       +      +
    136A  ARG*     1.3    73.6    -      -       -      +
    138A  LEU*     1.3    60.9    +      -       +      +
    140A  ASP*     3.8     1.8    -      -       -      +
    141A  LEU*     2.9    34.4    +      -       -      +
    169A  PHE*     4.5     7.9    -      +       -      -
    182A  TYR*     4.3     4.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  TYR*     3.1    34.9    +      -       +      +
    137A  TYR*     1.3    81.6    -      -       +      +
    139A  GLY*     1.3    60.2    +      -       -      +
    141A  LEU*     4.0    11.7    -      -       +      +
    142A  SER*     3.0    27.4    +      -       -      -
    178A  PHE*     4.7     3.6    -      -       +      -
    179A  LYS*     3.9    32.6    +      -       +      +
    182A  TYR*     3.6    46.4    -      -       +      -
    183A  ARG*     4.3    20.0    -      -       +      -
    186A  MET*     4.3     0.9    -      -       -      -
    300A  2FH      3.8    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  TYR      3.6     0.8    +      -       -      -
    135A  THR      3.4    19.4    +      -       -      -
    136A  ARG      3.2     2.4    +      -       -      -
    137A  TYR      3.1     0.6    -      -       -      -
    138A  LEU*     1.3    79.6    -      -       -      +
    140A  ASP*     1.3    60.3    +      -       -      +
    142A  SER*     3.4     2.1    +      -       -      -
    143A  GLY*     2.8    28.6    +      -       -      -
    300A  2FH      3.6    33.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LEU*     5.2     0.7    -      -       -      +
     58A  TYR*     2.5    32.7    +      -       -      +
    136A  ARG*     2.7    50.4    +      -       -      +
    137A  TYR      4.1     1.8    -      -       -      +
    139A  GLY*     1.3    71.2    -      -       -      +
    141A  LEU*     1.3    60.9    +      -       -      +
    142A  SER      3.2     0.2    -      -       -      -
    143A  GLY*     5.0     0.4    -      -       -      -
    144A  GLY*     2.9    32.1    +      -       -      +
    166A  PHE*     3.6    23.0    -      -       +      -
    167A  PHE*     6.0     0.2    -      -       -      -
    169A  PHE*     4.1    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  LEU*     4.7     2.0    -      -       +      -
    137A  TYR      2.9    18.8    +      -       -      +
    138A  LEU*     4.0    11.0    -      -       +      +
    139A  GLY      3.2     0.2    -      -       -      -
    140A  ASP*     1.3    78.8    -      -       -      +
    142A  SER*     1.3    62.7    +      -       -      +
    144A  GLY      4.5     0.2    +      -       -      -
    145A  GLN*     3.6    20.3    +      -       -      +
    169A  PHE*     3.9    35.4    -      -       +      -
    172A  ILE*     4.1    13.9    -      -       +      -
    175A  ALA*     4.0    25.2    -      -       +      +
    178A  PHE*     3.8    31.9    -      -       +      -
    179A  LYS*     4.2    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138A  LEU      3.0    16.3    +      -       -      -
    139A  GLY      3.4     3.0    +      -       -      -
    141A  LEU*     1.3    77.1    -      -       -      +
    143A  GLY*     1.3    65.2    +      -       -      +
    145A  GLN*     3.4    22.3    -      -       -      +
    146A  VAL*     4.1     6.5    -      -       -      +
    179A  LYS*     3.5    22.1    +      -       -      +
    300A  2FH      3.9    34.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  GLY      2.8    19.7    +      -       -      -
    140A  ASP*     5.0     0.2    -      -       -      -
    142A  SER*     1.3    74.8    -      -       -      +
    144A  GLY*     1.3    65.3    +      -       -      +
    146A  VAL*     2.7    29.8    +      -       -      +
    147A  LEU*     3.1    16.1    -      -       -      +
    300A  2FH      4.4    19.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ASP*     2.9    26.4    +      -       -      +
    142A  SER      3.4     0.4    -      -       -      -
    143A  GLY*     1.3    73.7    -      -       -      +
    145A  GLN*     1.3    53.6    +      -       -      +
    146A  VAL      2.6    12.6    +      -       -      -
    147A  LEU*     3.0     2.7    +      -       -      -
    148A  LYS*     2.9    21.1    +      -       -      +
    166A  PHE*     6.0     0.9    -      -       -      -
    167A  PHE*     3.5    32.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ASP      4.8     0.2    +      -       -      -
    141A  LEU      3.6    17.3    +      -       -      +
    142A  SER*     3.4    18.7    +      -       -      +
    144A  GLY*     1.3    68.4    -      -       -      -
    146A  VAL*     1.3    63.3    +      -       +      +
    148A  LYS*     4.2    12.9    -      -       +      +
    149A  LYS*     3.7    18.2    +      -       -      +
    167A  PHE      4.9     6.0    +      -       -      +
    175A  ALA*     5.1    11.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  SER      4.1    12.1    -      -       -      +
    143A  GLY*     2.7    22.2    +      -       -      +
    144A  GLY      2.6     5.3    +      -       -      -
    145A  GLN*     1.3    72.7    -      -       +      +
    147A  LEU*     1.3    66.1    +      -       +      +
    148A  LYS      3.4     0.2    +      -       -      -
    149A  LYS*     3.5     5.1    +      -       -      +
    150A  ILE*     3.3    36.8    +      -       +      +
    300A  2FH      4.2    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  MET*     4.8     1.8    -      -       +      -
     37A  PHE*     3.5    37.0    -      -       +      -
     38A  GLN*     5.5     2.5    -      -       +      -
     47A  PHE*     5.7     0.2    -      -       +      -
    143A  GLY*     3.1    26.9    -      -       -      +
    144A  GLY*     3.0     4.0    +      -       -      +
    146A  VAL*     1.3    81.9    -      -       +      +
    148A  LYS*     1.3    65.8    +      -       -      +
    150A  ILE*     3.7    10.1    -      -       +      +
    151A  ALA*     2.9    27.8    +      -       -      +
    167A  PHE*     4.1    17.9    -      -       +      -
    300A  2FH      3.6    36.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  GLY      2.9    15.7    +      -       -      +
    145A  GLN*     4.3    10.1    -      -       +      +
    147A  LEU*     1.3    77.2    -      -       -      +
    149A  LYS*     1.3    55.1    +      -       -      +
    151A  ALA*     3.7     3.3    -      -       -      +
    152A  GLN*     2.8    55.4    +      -       -      +
    164A  LEU*     4.4    24.6    -      -       +      +
    167A  PHE*     3.8    38.2    -      -       +      +
    168A  THR*     4.1    16.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  GLN      3.7    11.9    +      -       -      +
    146A  VAL*     3.5     8.5    +      -       -      +
    148A  LYS*     1.3    83.4    -      -       -      +
    150A  ILE*     1.3    67.3    +      -       +      +
    152A  GLN*     3.1    39.5    +      -       -      +
    153A  LYS*     3.1    46.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  PHE*     3.5    34.5    -      -       +      +
     38A  GLN*     4.0    31.0    -      -       +      +
     40A  GLY*     4.5    13.0    -      -       -      +
     42A  VAL*     5.0     1.3    -      -       +      -
    146A  VAL*     3.3    29.2    +      -       +      +
    147A  LEU*     3.7    10.8    -      -       +      +
    149A  LYS*     1.3    79.7    -      -       +      +
    151A  ALA*     1.3    65.6    +      -       -      +
    153A  LYS*     3.2    10.6    -      -       -      +
    154A  ALA*     3.2    22.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  PHE*     4.4     5.8    -      -       +      -
     42A  VAL*     5.0     1.6    -      -       -      -
     47A  PHE*     3.7    24.0    -      -       +      -
    147A  LEU      2.9    21.5    +      -       -      +
    148A  LYS*     3.7     2.9    -      -       -      +
    150A  ILE*     1.3    70.9    -      -       -      +
    152A  GLN*     1.3    69.7    +      -       -      +
    153A  LYS      2.6     4.9    +      -       -      -
    154A  ALA*     3.0     3.8    +      -       -      +
    155A  LEU*     2.9    51.1    +      -       +      +
    164A  LEU*     5.2     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  LYS*     2.8    47.6    +      -       -      +
    149A  LYS*     3.1    32.5    -      -       -      +
    151A  ALA*     1.3    71.2    -      -       -      +
    153A  LYS*     1.3    57.8    +      -       +      +
    155A  LEU*     4.8     0.4    -      -       -      +
    156A  ASP*     3.8     5.4    +      -       -      -
    157A  LEU*     3.1    32.6    -      -       +      +
    164A  LEU*     4.5    14.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  LYS*     3.1    49.9    -      -       -      +
    150A  ILE*     3.2    15.5    -      -       -      +
    151A  ALA      2.6     3.2    +      -       -      -
    152A  GLN*     1.3    73.5    -      -       +      +
    154A  ALA*     1.3    66.4    +      -       +      +
    155A  LEU      2.8    11.2    +      -       -      -
    156A  ASP*     3.1    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 154 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  GLY*     3.3    30.1    -      -       -      +
     42A  VAL*     3.8    22.1    -      -       +      +
    150A  ILE*     3.2    15.2    +      -       +      +
    151A  ALA      3.0     1.9    +      -       -      +
    153A  LYS*     1.3    81.5    -      -       +      +
    155A  LEU*     1.3    58.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  VAL*     4.1    11.0    -      -       +      +
     43A  THR      3.8    10.5    -      -       -      +
     44A  ARG*     3.6    57.8    +      -       +      +
     47A  PHE*     3.8    22.9    -      -       +      -
     96A  TRP*     3.8    20.9    -      -       +      -
    151A  ALA*     2.9    38.3    +      -       +      +
    154A  ALA*     1.3    81.8    -      -       -      +
    156A  ASP*     1.3    73.2    +      -       -      +
    157A  LEU*     3.2    11.5    +      -       +      +
    164A  LEU*     5.7     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  ARG*     3.6     7.2    +      -       -      +
    152A  GLN      3.8     8.0    +      -       -      -
    153A  LYS*     3.1    19.5    +      -       -      +
    154A  ALA      5.3     0.2    -      -       -      -
    155A  LEU*     1.3    81.4    -      -       -      +
    157A  LEU*     1.3    70.1    +      -       -      +
    158A  PRO*     4.3     0.9    -      -       -      +
----------------------------------------------------------
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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