Contacts of the helix formed by residues 112 - 144 (chain A) in PDB entry 4Z9G


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 SER 112 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LYS*     1.3    76.2    -      -       -      +
    113A  LYS*     1.3    59.5    -      -       -      +
    114A  VAL      3.0     5.4    -      -       -      -
    115A  HIS*     2.9    43.5    +      -       -      +
    116A  TYR*     3.4    27.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LYS      3.4     7.1    -      -       -      +
    112A  SER*     1.3    77.4    -      -       -      +
    114A  VAL*     1.3    51.4    +      -       -      +
    116A  TYR*     3.6    18.5    -      -       +      +
    117A  HIS*     2.3    47.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LYS*     3.2    29.2    -      -       -      +
    112A  SER      2.9     0.6    +      -       -      -
    113A  LYS*     1.3    76.2    -      -       -      +
    115A  HIS*     1.3    69.3    +      -       +      +
    117A  HIS*     3.2    18.1    +      -       +      +
    118A  VAL*     3.1    35.0    +      -       +      +
    346A  TYR*     5.5     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LYS      5.6     0.7    -      -       -      -
    112A  SER*     2.9    26.1    +      -       -      +
    114A  VAL*     1.3    79.6    -      -       +      +
    116A  TYR*     1.3    71.6    +      -       +      +
    119A  ALA*     3.0    29.8    +      -       -      +
    341A  ARG*     3.4    36.6    +      -       -      -
    342A  VAL*     3.1    28.3    -      -       +      +
    345A  ILE*     5.3     6.7    -      -       +      +
    346A  TYR*     3.2    39.6    +      +       +      +
----------------------------------------------------------
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Residues in contact with TYR 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  SER*     3.4    23.5    +      -       -      -
    113A  LYS*     3.2    20.1    +      -       +      +
    114A  VAL      3.2     1.2    -      -       -      -
    115A  HIS*     1.3    93.0    -      +       +      +
    117A  HIS*     1.3    66.9    +      -       -      +
    119A  ALA*     3.5     5.5    +      -       +      +
    120A  ALA*     3.1    25.3    +      -       -      +
    345A  ILE*     5.2    18.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  LYS*     2.3    43.5    +      -       +      +
    114A  VAL*     3.2    27.8    +      -       +      +
    116A  TYR*     1.3    77.1    -      -       -      +
    118A  VAL*     1.3    67.4    +      -       +      +
    120A  ALA*     3.6    10.9    -      -       -      +
    121A  ILE*     3.6    19.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  VAL*     3.1    26.1    +      -       +      +
    117A  HIS*     1.3    80.6    -      -       +      +
    119A  ALA*     1.3    67.5    +      -       -      +
    121A  ILE*     3.2    19.0    +      -       +      +
    122A  ILE*     3.4    17.6    +      -       +      +
    346A  TYR*     3.4    32.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  HIS      3.0    17.7    +      -       -      +
    116A  TYR*     4.0     5.8    -      -       +      +
    118A  VAL*     1.3    76.0    -      -       -      +
    120A  ALA*     1.3    53.9    -      -       -      +
    122A  ILE*     2.9    16.1    +      -       -      +
    123A  ASN*     2.6    38.4    +      -       +      +
    345A  ILE*     5.1    11.9    -      -       +      +
    346A  TYR*     4.5    13.4    +      -       +      -
    349A  ALA*     4.5    11.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  TYR      3.1    18.2    +      -       -      +
    117A  HIS*     3.6    10.5    -      -       -      +
    119A  ALA*     1.3    76.6    -      -       -      +
    121A  ILE*     1.3    56.7    +      -       +      +
    123A  ASN*     3.9     6.9    -      -       -      +
    124A  TYR*     3.0    30.1    +      -       -      +
    169A  TRP*     4.8     2.7    -      -       -      -
    173A  GLN*     5.5     7.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  HIS      3.6    15.2    +      -       -      +
    118A  VAL*     3.2    11.4    +      -       +      +
    119A  ALA      3.1     0.8    -      -       -      -
    120A  ALA*     1.3    75.3    -      -       +      +
    122A  ILE*     1.3    62.4    +      -       +      +
    124A  TYR*     3.1     4.5    +      -       -      +
    125A  LEU*     2.8    35.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 122 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118A  VAL*     3.4    15.9    +      -       +      +
    119A  ALA*     2.9    12.7    +      -       +      +
    121A  ILE*     1.3    76.6    -      -       +      +
    123A  ASN*     1.3    63.7    +      -       -      +
    124A  TYR      3.2     0.7    +      -       -      -
    125A  LEU*     4.0     4.6    -      -       -      +
    126A  GLY*     3.4    17.8    +      -       -      -
    346A  TYR*     4.1    34.8    -      -       +      +
    349A  ALA*     3.9    18.6    -      -       +      -
    350A  PHE*     4.2    18.6    -      -       +      +
    353A  SER*     3.8     4.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 123 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119A  ALA*     2.6    22.2    +      -       -      +
    120A  ALA*     4.1     5.8    -      -       -      +
    122A  ILE*     1.3    73.3    -      -       -      +
    124A  TYR*     1.3    57.9    +      -       -      +
    127A  HIS*     2.5    67.2    +      -       -      -
    169A  TRP*     3.3    18.1    +      -       +      +
    349A  ALA*     3.7    21.5    -      -       +      +
    352A  GLU*     3.6    28.4    +      -       -      +
    353A  SER*     3.5     8.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 124 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120A  ALA      3.0    20.8    +      -       -      +
    121A  ILE*     3.1     6.9    +      -       -      +
    123A  ASN*     1.3    77.8    -      -       -      +
    125A  LEU*     1.3    67.9    +      -       -      +
    127A  HIS*     3.4    11.3    +      -       -      +
    128A  CYS*     3.5    26.8    +      -       -      -
    169A  TRP*     3.6    20.9    -      +       +      -
    170A  PHE*     4.1    25.2    -      +       -      -
    173A  GLN*     5.3     7.4    -      -       +      -
    174A  LEU*     4.8    25.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 125 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121A  ILE*     2.8    21.3    +      -       +      +
    122A  ILE*     4.0     5.4    -      -       -      +
    124A  TYR*     1.3    81.0    -      -       -      +
    126A  GLY*     1.3    59.6    +      -       -      +
    128A  CYS*     3.0    31.0    +      -       +      +
    129A  ILE*     3.3    25.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 126 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122A  ILE      3.4     8.6    +      -       -      -
    125A  LEU*     1.3    74.3    -      -       -      +
    127A  HIS*     1.3    50.2    +      -       -      +
    128A  CYS      3.0     5.2    -      -       -      -
    129A  ILE*     3.1    14.8    +      -       -      +
    130A  SER*     2.7    42.8    +      -       -      -
    353A  SER*     2.9    17.0    -      -       -      -
    354A  PHE*     4.0     8.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 127 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  ASN*     2.5    48.0    +      -       -      +
    124A  TYR      3.4     6.4    +      -       -      +
    125A  LEU      3.2     1.0    -      -       -      -
    126A  GLY*     1.3    75.2    -      -       -      +
    128A  CYS*     1.3    58.2    +      -       -      +
    130A  SER*     3.9     2.5    -      -       -      -
    131A  LEU*     3.3     6.6    +      -       -      +
    166A  ASN*     2.8    52.3    +      -       +      +
    169A  TRP*     3.5    40.5    -      +       +      +
    170A  PHE*     3.7    16.0    -      -       +      -
    352A  GLU*     4.2    14.3    +      -       -      -
    353A  SER*     2.9    30.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 128 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124A  TYR*     3.5    28.7    -      -       -      -
    125A  LEU*     3.0    15.6    +      -       +      +
    126A  GLY      3.0     0.6    -      -       -      -
    127A  HIS*     1.3    76.6    -      -       -      +
    129A  ILE*     1.3    66.3    +      -       +      +
    130A  SER      3.2     1.3    -      -       -      -
    131A  LEU*     3.2     4.3    +      -       -      +
    132A  VAL*     3.1    31.1    +      -       +      +
    170A  PHE*     4.0    21.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125A  LEU*     3.5    32.5    -      -       +      +
    126A  GLY*     3.1     6.3    +      -       -      +
    128A  CYS*     1.3    75.5    -      -       +      +
    130A  SER*     1.3    57.6    +      -       -      +
    132A  VAL*     3.5     5.3    +      -       -      +
    133A  ALA*     3.0    32.7    +      -       +      +
    354A  PHE*     3.6    37.2    -      -       +      -
    357A  PHE*     4.6    11.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  GLY      2.7    16.4    +      -       -      -
    127A  HIS*     4.0     1.3    -      -       -      -
    128A  CYS      3.2     0.2    -      -       -      -
    129A  ILE*     1.3    79.9    -      -       -      +
    131A  LEU*     1.3    55.8    +      -       -      +
    133A  ALA*     3.9     2.4    -      -       -      +
    134A  LEU*     3.0    32.9    +      -       -      +
    166A  ASN*     3.8    13.2    -      -       -      -
    353A  SER      2.5    29.4    +      -       -      -
    354A  PHE*     3.4    15.1    -      -       -      -
    356A  GLY*     3.8    17.7    -      -       -      -
    357A  PHE*     3.8     9.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127A  HIS      3.3     8.3    +      -       -      +
    128A  CYS*     3.2     6.5    +      -       -      +
    129A  ILE      3.2     0.4    -      -       -      -
    130A  SER*     1.3    79.0    -      -       -      +
    132A  VAL*     1.3    62.6    +      -       +      +
    134A  LEU*     4.7     2.0    -      -       +      -
    135A  LEU*     2.8    47.3    +      -       +      +
    163A  ILE*     4.0    32.1    -      -       +      +
    166A  ASN*     3.2    33.2    -      -       +      +
    167A  ALA*     4.7    13.7    -      -       +      -
    170A  PHE*     4.3    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  CYS*     3.1    18.3    +      -       +      +
    129A  ILE*     4.0     4.7    -      -       -      +
    131A  LEU*     1.3    76.1    -      -       +      +
    133A  ALA*     1.3    59.9    +      -       -      +
    135A  LEU*     3.8     6.5    -      -       +      +
    136A  VAL*     2.9    48.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    129A  ILE*     3.0    19.4    +      -       +      +
    130A  SER      3.9     4.3    -      -       -      +
    132A  VAL*     1.3    78.3    -      -       -      +
    134A  LEU*     1.3    60.9    +      -       -      +
    136A  VAL*     3.8     5.3    -      -       -      +
    137A  ALA*     3.2    23.2    +      -       -      +
    357A  PHE*     3.8    22.4    -      -       +      -
    360A  SER*     3.6    22.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  SER      3.0    22.2    +      -       -      +
    131A  LEU*     3.9     7.4    -      -       +      +
    132A  VAL      3.3     0.2    -      -       -      -
    133A  ALA*     1.3    77.3    -      -       -      +
    135A  LEU*     1.3    59.0    +      -       -      +
    137A  ALA*     3.4     2.4    +      -       -      +
    138A  PHE*     3.0    27.2    +      -       -      +
    159A  ILE*     3.6    36.6    -      -       +      +
    162A  PHE*     3.6    43.1    -      -       +      +
    163A  ILE*     4.0    13.0    -      -       +      +
    166A  ASN*     4.9     4.0    -      -       +      +
    356A  GLY*     3.5    36.1    -      -       -      +
    359A  VAL*     4.6     4.3    -      -       +      -
    360A  SER*     4.0     9.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  LEU*     2.8    40.4    +      -       +      +
    132A  VAL*     3.8     5.8    -      -       +      +
    134A  LEU*     1.3    74.4    -      -       -      +
    136A  VAL*     1.3    67.8    +      -       +      +
    138A  PHE*     3.2    10.6    +      -       +      +
    139A  VAL*     3.0    32.0    +      -       +      +
    163A  ILE*     4.1    29.8    -      -       +      -
   1203A  OLA      5.1     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132A  VAL*     2.9    37.4    +      -       +      +
    133A  ALA*     3.8     6.3    -      -       -      +
    134A  LEU      3.3     0.2    -      -       -      -
    135A  LEU*     1.3    76.5    -      -       +      +
    137A  ALA*     1.3    62.9    +      -       -      +
    139A  VAL*     3.1    11.6    +      -       +      +
    140A  LEU*     3.1    43.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133A  ALA      3.2    14.2    +      -       -      +
    134A  LEU      3.7     4.3    -      -       -      +
    136A  VAL*     1.3    79.1    -      -       -      +
    138A  PHE*     1.3    63.0    +      -       -      +
    140A  LEU*     3.1    13.8    +      -       -      +
    141A  PHE*     3.0    30.5    +      -       +      -
    159A  ILE*     3.7    19.7    -      -       +      -
    360A  SER*     4.2     9.2    -      -       -      +
    364A  CYS*     3.8    21.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  LEU      3.0    14.3    +      -       -      +
    135A  LEU*     3.2    16.1    +      -       +      +
    137A  ALA*     1.3    76.8    -      -       -      +
    139A  VAL*     1.3    65.2    +      -       +      +
    141A  PHE*     3.4     5.3    +      -       -      +
    142A  LEU*     3.3    58.2    +      -       +      +
    156A  ALA*     3.4    33.2    -      -       +      -
    159A  ILE*     3.7    16.5    -      -       +      +
    160A  ALA*     3.9     9.0    -      -       +      -
    163A  ILE*     3.8    14.6    -      -       +      -
   1203A  OLA      4.1    40.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135A  LEU*     3.0    20.5    +      -       +      +
    136A  VAL*     3.1     9.2    +      -       -      +
    138A  PHE*     1.3    81.3    -      -       +      +
    140A  LEU*     1.3    70.2    -      -       +      +
    142A  LEU*     3.4     7.1    +      -       -      +
    143A  ARG*     3.0    33.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  VAL*     3.1    30.2    +      -       +      +
    137A  ALA*     3.1    12.3    +      -       -      +
    139A  VAL*     1.3    84.0    -      -       +      +
    141A  PHE*     1.3    63.6    +      -       +      +
    143A  ARG*     3.5    18.5    +      -       -      +
    144A  ALA*     3.4    22.7    +      -       -      +
    364A  CYS*     4.6    14.1    -      -       -      -
    367A  ASN*     5.8     6.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137A  ALA*     3.0    32.5    +      -       +      -
    138A  PHE*     3.8     7.2    -      -       -      +
    139A  VAL      3.3     0.2    -      -       -      -
    140A  LEU*     1.3    78.7    -      -       +      +
    142A  LEU*     1.3    64.1    +      -       -      +
    143A  ARG      3.4     0.3    +      -       -      -
    144A  ALA*     3.6     9.2    +      -       -      +
    146A  SER*     5.3     1.9    -      -       -      -
    147A  ILE*     3.6    21.2    +      -       +      +
    152A  ASN*     3.9    22.6    -      -       +      +
    155A  HIS*     3.4    31.6    -      +       +      -
    156A  ALA*     4.2    20.2    -      -       +      -
    159A  ILE*     3.5    26.5    -      -       +      -
    363A  ALA*     3.6    28.0    -      -       +      -
    364A  CYS*     4.5     6.5    -      -       -      -
    367A  ASN*     3.7    29.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138A  PHE*     3.3    54.8    +      -       +      +
    139A  VAL*     3.9     5.8    -      -       -      +
    141A  PHE*     1.3    77.5    -      -       -      +
    143A  ARG*     1.3    62.7    +      -       -      +
    144A  ALA      3.6     5.4    +      -       -      +
    147A  ILE*     3.5    31.4    -      -       +      +
    156A  ALA*     4.6     7.9    -      -       +      -
   1203A  OLA      6.3     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  VAL*     3.0    26.1    +      -       +      +
    140A  LEU*     3.7    20.3    -      -       -      +
    141A  PHE      3.2     0.4    -      -       -      -
    142A  LEU*     1.3    79.7    -      -       -      +
    144A  ALA*     1.3    61.9    +      -       -      +
    145A  ARG*     4.0     1.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  LEU      3.4    13.5    +      -       -      +
    141A  PHE*     3.6     4.1    +      -       -      +
    142A  LEU      3.4     0.9    -      -       -      +
    143A  ARG*     1.3    81.5    -      -       +      +
    145A  ARG*     1.3    59.5    +      -       -      +
    146A  SER*     2.9    28.1    +      -       -      +
    147A  ILE*     3.3    22.9    +      -       -      +
    367A  ASN*     6.3     0.7    -      -       -      +
----------------------------------------------------------
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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