Contacts of the helix formed by residues 118 - 146 (chain B) in PDB entry 2GFN


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 GLU 118 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  GLU*     2.8    34.1    +      -       +      +
    115B  GLY*     3.7     3.9    -      -       -      -
    117B  ALA*     1.3    74.1    -      -       +      +
    119B  GLU*     1.3    60.4    +      -       -      +
    120B  THR*     3.4    10.4    +      -       +      +
    121B  ALA      3.5     1.6    +      -       -      +
    122B  ARG*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 119 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  ALA      4.1     1.2    +      -       -      -
    118B  GLU*     1.3    70.2    -      -       -      +
    120B  THR*     1.3    65.5    +      -       -      +
    122B  ARG*     3.0    43.1    +      -       -      +
    123B  GLY*     3.1    23.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 120 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54B  HIS*     5.4     6.5    -      -       +      -
     58B  LEU*     5.4    13.5    -      -       +      +
     62B  ARG*     5.2     7.4    +      -       -      -
    111B  PHE*     6.3     0.2    -      -       +      -
    114B  GLU*     4.5     8.3    -      -       -      +
    118B  GLU*     4.9     7.4    -      -       +      -
    119B  GLU*     1.3    78.7    -      -       -      +
    121B  ALA*     1.3    81.3    +      -       +      +
    123B  GLY*     3.5     1.2    +      -       -      -
    124B  GLU*     3.4    24.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 121 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  LEU*     5.7     1.8    -      -       -      -
     61B  LEU*     5.5     0.2    -      -       -      -
    111B  PHE*     3.7    23.3    -      -       +      +
    114B  GLU*     3.6    35.7    -      -       +      +
    115B  GLY*     4.0     9.2    -      -       -      +
    118B  GLU      3.5     3.2    +      -       -      +
    120B  THR*     1.3    80.1    -      -       +      +
    122B  ARG*     1.3    66.0    +      -       -      +
    124B  GLU*     3.2    10.0    +      -       -      +
    125B  ILE*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 122 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  ILE      4.8     3.8    -      -       -      -
    175A  LEU*     2.7    53.1    +      -       +      +
    177A  PRO*     4.0    16.4    -      -       -      +
    115B  GLY*     3.5    23.7    -      -       -      +
    118B  GLU      3.0    18.6    +      -       -      +
    119B  GLU*     3.0    41.7    +      -       -      +
    120B  THR      3.3     0.2    -      -       -      -
    121B  ALA*     1.3    77.6    -      -       -      +
    123B  GLY*     1.3    60.6    +      -       -      +
    125B  ILE*     3.4     6.4    +      -       -      +
    126B  ALA*     2.9    38.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 123 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119B  GLU*     3.1    17.3    +      -       -      -
    120B  THR      3.5     2.2    +      -       -      -
    121B  ALA      3.2     0.2    -      -       -      -
    122B  ARG*     1.3    83.4    -      -       -      +
    124B  GLU*     1.3    59.8    +      -       -      +
    126B  ALA*     3.8     7.1    -      -       -      +
    127B  ALA*     3.1    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 124 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  LEU*     3.5    14.4    -      -       +      +
     61B  LEU*     3.9    17.3    -      -       +      -
     62B  ARG*     2.3    56.5    +      -       -      +
    108B  PHE*     5.0     1.2    -      -       -      -
    120B  THR*     3.4    14.7    +      -       -      +
    121B  ALA*     3.2     8.4    +      -       -      +
    123B  GLY*     1.3    73.9    -      -       -      +
    125B  ILE*     1.3    67.4    -      -       -      +
    127B  ALA*     3.4     7.5    +      -       -      +
    128B  PHE*     3.1    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 125 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175A  LEU*     4.1    18.8    -      -       +      -
     61B  LEU*     4.2     5.2    -      -       +      -
    108B  PHE*     3.6    29.4    -      -       +      -
    111B  PHE*     4.0    31.9    -      -       +      +
    112B  TYR*     3.7    33.2    -      -       +      -
    115B  GLY*     5.5     0.2    -      -       -      -
    121B  ALA      3.0    19.0    +      -       -      +
    122B  ARG*     3.6     9.4    -      -       -      +
    124B  GLU*     1.3    76.8    -      -       -      +
    126B  ALA*     1.3    63.8    +      -       -      +
    128B  PHE*     3.3     6.8    +      -       -      +
    129B  LEU*     3.0    38.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 126 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175A  LEU      4.7     3.6    +      -       -      +
    176A  ASP*     4.6    16.8    -      -       -      +
    177A  PRO*     5.8     0.7    -      -       +      -
    122B  ARG*     2.9    35.2    +      -       -      +
    123B  GLY*     3.9     7.2    -      -       -      +
    124B  GLU      3.3     0.2    -      -       -      -
    125B  ILE*     1.3    77.2    -      -       -      +
    127B  ALA*     1.3    55.9    +      -       -      +
    129B  LEU*     3.3     6.7    +      -       -      +
    130B  ALA*     3.0    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 127 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123B  GLY      3.1    18.8    +      -       -      +
    124B  GLU*     3.8     9.4    -      -       -      +
    125B  ILE      3.3     0.2    -      -       -      -
    126B  ALA*     1.3    70.8    -      -       -      +
    128B  PHE*     1.3    61.9    +      -       -      +
    130B  ALA*     3.3     6.3    +      -       -      +
    131B  ARG*     2.9    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 128 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65B  GLY*     4.0    18.6    -      -       -      -
     68B  GLN*     4.0    20.9    -      -       +      -
     72B  TYR*     4.3     6.2    +      +       -      -
     94B  ILE*     4.0    19.5    -      -       +      -
    104B  MSE      4.1    11.7    -      -       +      -
    108B  PHE*     3.3    50.3    -      +       +      -
    112B  TYR*     5.4     2.5    -      +       -      -
    124B  GLU      3.1    11.2    +      -       -      +
    125B  ILE      3.5     8.1    -      -       -      +
    127B  ALA*     1.3    77.2    -      -       -      +
    129B  LEU*     1.3    69.8    +      -       +      +
    131B  ARG*     3.4    10.8    +      -       -      +
    132B  TRP*     3.1    51.7    +      +       -      +
    167B  ASP*     6.0     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 129 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172A  GLN*     3.7    44.2    -      -       +      +
    175A  LEU*     5.5     0.4    -      -       +      -
    176A  ASP*     3.8    29.8    -      -       +      +
    112B  TYR*     3.7    17.9    -      -       +      +
    125B  ILE*     3.0    37.7    +      -       +      +
    126B  ALA      3.9     1.1    -      -       -      +
    128B  PHE*     1.3    82.0    -      -       +      +
    130B  ALA*     1.3    58.7    +      -       -      +
    132B  TRP*     3.3    25.2    +      -       +      +
    133B  ARG*     2.8    41.2    +      -       -      +
    163B  VAL*     4.4     3.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 130 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126B  ALA      3.0    17.2    +      -       -      +
    127B  ALA*     3.8     6.7    -      -       -      +
    129B  LEU*     1.3    75.3    -      -       -      +
    131B  ARG*     1.3    66.2    +      -       -      +
    133B  ARG*     3.9    17.2    -      -       -      +
    134B  GLY*     2.9    20.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 131 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65B  GLY      3.8    14.7    +      -       -      -
     66B  ASP*     4.6    10.3    +      -       -      +
     69B  GLY*     3.4    35.5    +      -       -      -
     70B  ASP*     5.6     1.0    +      -       -      -
     72B  TYR*     4.2    20.0    -      -       +      -
    127B  ALA      2.9    17.4    +      -       -      +
    128B  PHE*     3.7    10.8    -      -       -      +
    129B  LEU      3.3     0.2    -      -       -      -
    130B  ALA*     1.3    76.6    -      -       -      +
    132B  TRP*     1.3    62.6    +      -       -      +
    134B  GLY*     3.2     3.0    +      -       -      -
    135B  VAL*     3.1    28.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 132 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72B  TYR*     3.2    29.4    +      +       -      +
     90B  ILE*     4.0    16.1    -      -       +      +
     91B  THR*     5.6     1.6    +      -       -      +
     94B  ILE*     3.6    35.2    -      -       +      +
    128B  PHE*     3.1    37.0    +      +       -      +
    129B  LEU*     3.6    13.9    -      -       +      +
    130B  ALA      3.2     0.2    -      -       -      -
    131B  ARG*     1.3    74.5    -      -       -      +
    133B  ARG*     1.3    65.8    +      -       -      +
    134B  GLY      3.2     0.2    +      -       -      -
    135B  VAL*     3.2     3.3    -      -       -      +
    136B  VAL*     3.0    35.7    +      -       +      +
    162B  LEU*     6.2     0.4    -      -       -      +
    163B  VAL*     3.5    45.9    -      -       +      +
    166B  THR*     3.7    20.4    +      -       +      -
    167B  ASP*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 133 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172A  GLN*     4.4     6.1    +      -       -      -
    176A  ASP*     2.8    30.5    +      -       -      -
    178A  VAL*     3.6    33.0    -      -       -      +
    179A  VAL*     3.5    18.4    -      -       -      +
    129B  LEU*     2.8    28.6    +      -       -      +
    130B  ALA*     4.0    21.4    -      -       -      +
    132B  TRP*     1.3    75.5    -      -       -      +
    134B  GLY*     1.3    53.6    +      -       -      +
    137B  ARG*     2.7    38.4    +      -       -      +
    159B  THR*     3.3    22.9    -      -       +      +
    160B  VAL*     4.1    27.1    -      -       -      +
    163B  VAL*     3.9    19.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 134 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130B  ALA      2.9    15.3    +      -       -      -
    131B  ARG*     3.2     4.5    +      -       -      -
    132B  TRP      3.2     0.4    -      -       -      -
    133B  ARG*     1.3    77.9    -      -       -      +
    135B  VAL*     1.3    60.9    +      -       -      +
    137B  ARG*     3.5     5.8    +      -       -      +
    138B  GLU*     3.2    24.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 135 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72B  TYR*     3.9    45.1    -      -       +      -
     76B  LEU*     3.9    27.8    -      -       +      +
     90B  ILE*     4.1    17.1    -      -       +      +
    131B  ARG*     3.1    15.7    +      -       +      +
    132B  TRP      3.2    13.5    -      -       -      +
    134B  GLY*     1.3    72.4    -      -       -      +
    136B  VAL*     1.3    67.2    +      -       -      +
    138B  GLU*     3.5    11.6    +      -       -      +
    139B  SER*     3.4    21.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 136 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87B  LEU*     3.6    21.9    -      -       +      +
     90B  ILE*     3.9    15.9    -      -       +      -
     91B  THR*     5.7     0.2    -      -       -      +
    132B  TRP*     3.0    43.8    +      -       +      +
    133B  ARG*     3.8     3.4    -      -       -      +
    135B  VAL*     1.3    77.2    -      -       -      +
    137B  ARG*     1.3    63.3    +      -       -      +
    139B  SER*     3.1     5.2    +      -       -      -
    140B  VAL*     2.9    25.8    +      -       +      +
    159B  THR*     3.8    28.5    -      -       +      +
    162B  LEU*     3.9    20.6    -      -       +      -
    163B  VAL*     4.0     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 137 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  ARG      2.7    21.6    +      -       -      +
    134B  GLY*     3.9     6.1    -      -       -      +
    135B  VAL      3.3     0.2    -      -       -      -
    136B  VAL*     1.3    73.6    -      -       -      +
    138B  GLU*     1.3    64.0    +      -       -      +
    139B  SER      3.2     0.2    +      -       -      -
    140B  VAL*     3.2     2.6    +      -       -      +
    141B  VAL*     2.9    54.6    +      -       +      +
    155B  ALA*     4.4    13.6    -      -       +      +
    156B  ASP*     2.8    35.4    +      -       -      +
    159B  THR*     3.3    21.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 138 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  LEU*     4.1    32.5    -      -       -      +
    134B  GLY      3.2    17.9    +      -       -      +
    135B  VAL*     3.6     8.2    -      -       -      +
    137B  ARG*     1.3    76.5    -      -       -      +
    139B  SER*     1.3    56.9    +      -       -      +
    141B  VAL*     3.3    11.1    -      -       +      +
    142B  ALA*     3.0    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 139 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  LEU*     3.9    12.8    -      -       -      +
     83B  PRO*     3.4    17.4    -      -       -      +
     86B  LYS*     3.8    23.5    -      -       -      +
     87B  LEU*     3.7    24.4    -      -       -      +
     90B  ILE*     4.5     1.8    -      -       -      +
    135B  VAL      3.4     8.6    +      -       -      -
    136B  VAL      3.1     7.7    +      -       -      -
    138B  GLU*     1.3    78.4    -      -       -      +
    140B  VAL*     1.3    60.3    +      -       -      +
    142B  ALA*     4.2     5.4    -      -       -      -
    143B  ALA*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 140 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87B  LEU*     4.0    24.5    -      -       +      -
    136B  VAL*     2.9    26.9    +      -       +      +
    137B  ARG*     3.6     9.4    -      -       -      +
    139B  SER*     1.3    76.7    -      -       -      +
    141B  VAL*     1.3    63.4    +      -       -      +
    143B  ALA*     3.3     5.6    +      -       -      +
    144B  GLN*     3.0    30.9    +      -       +      +
    149B  VAL*     4.6     6.6    -      -       +      +
    155B  ALA*     3.9    24.9    -      -       +      +
    158B  VAL*     3.8    34.5    -      -       +      -
    159B  THR*     4.0     3.8    -      -       -      +
    162B  LEU*     5.5     1.1    -      -       +      -
    197B  VAL*     5.1     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 141 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137B  ARG*     2.9    45.4    +      -       -      +
    138B  GLU*     3.3    17.7    -      -       +      +
    140B  VAL*     1.3    71.5    -      -       -      +
    142B  ALA*     1.3    64.5    -      -       +      +
    144B  GLN*     3.2    12.4    +      -       -      +
    145B  ARG*     2.8    60.6    +      -       -      +
    155B  ALA*     3.5    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 142 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83B  PRO*     3.9    15.7    -      -       +      -
    138B  GLU*     3.0    20.0    +      -       +      +
    139B  SER*     3.7     7.6    -      -       -      +
    141B  VAL*     1.3    76.8    -      -       +      +
    143B  ALA*     1.3    61.6    +      -       -      +
    145B  ARG*     3.3    10.7    +      -       -      +
    146B  GLU*     3.1    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83B  PRO*     3.6    17.4    -      -       +      +
     84B  ILE*     4.2     7.9    -      -       +      -
     87B  LEU*     5.4     0.9    -      -       +      -
    139B  SER      2.9    20.9    +      -       -      +
    140B  VAL*     3.6     3.8    -      -       -      +
    141B  VAL      3.3     0.2    -      -       -      -
    142B  ALA*     1.3    72.9    -      -       -      +
    144B  GLN*     1.3    63.7    +      -       -      +
    146B  GLU*     3.2     3.0    +      -       -      -
    147B  GLY      3.1     4.3    +      -       -      -
    148B  THR*     3.0    36.6    +      -       -      +
    149B  VAL*     3.5    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 144 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  VAL*     3.0    21.3    +      -       -      +
    141B  VAL*     3.6    14.3    -      -       -      +
    143B  ALA*     1.3    74.5    -      -       -      +
    145B  ARG*     1.3    59.4    +      -       +      +
    147B  GLY*     3.1    18.4    +      -       -      -
    149B  VAL*     3.5    32.1    -      -       +      +
    150B  SER      3.0    15.9    +      -       -      +
    151B  THR*     4.2    14.8    +      -       -      +
    153B  LEU*     2.9    34.0    +      -       -      +
    155B  ALA*     3.8    21.3    -      -       -      +
    158B  VAL*     5.6     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 145 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141B  VAL*     2.8    44.8    +      -       -      +
    142B  ALA*     3.7     8.5    -      -       -      +
    143B  ALA      3.2     0.2    -      -       -      -
    144B  GLN*     1.3    78.8    -      -       +      +
    146B  GLU*     1.3    58.5    +      -       +      +
    147B  GLY      3.3     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 146 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83B  PRO*     3.5    36.7    -      -       -      +
    142B  ALA*     3.1    13.5    +      -       -      +
    143B  ALA      3.2     6.2    +      -       -      +
    145B  ARG*     1.3    74.8    -      -       -      +
    147B  GLY*     1.3    59.8    +      -       -      +
    148B  THR*     3.4    18.9    +      -       +      +
----------------------------------------------------------
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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