Contacts of the helix formed by residues 95 - 119 (chain A) in PDB entry 5DIR


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 95 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  LEU*     3.3    31.1    -      -       +      +
     92A  LYS*     3.2    43.4    +      -       +      +
     93A  LYS      3.2     0.4    +      -       -      -
     94A  GLY*     1.3    76.8    -      -       -      +
     96A  THR*     1.3    62.0    +      -       -      +
     97A  TRP*     3.3     3.6    -      -       -      -
     98A  LEU*     3.4    27.1    +      -       +      +
     99A  ALA*     3.3    20.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TRP*     4.3    26.7    -      -       +      -
     94A  GLY*     3.2    23.4    +      -       -      +
     95A  GLU*     1.3    74.2    -      -       -      +
     97A  TRP*     1.3    67.5    +      -       -      +
     99A  ALA*     3.5     1.8    +      -       -      +
    100A  ILE*     3.2    35.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  GLU*     5.1     0.7    -      -       -      -
     96A  THR*     1.3    83.1    +      -       -      +
     98A  LEU*     1.3    71.3    +      -       +      +
    100A  ILE*     3.9     4.3    -      -       -      +
    101A  ALA*     3.1    21.0    +      -       +      +
    152A  MET*     2.7    71.3    +      -       +      +
    153A  LEU*     5.5     0.7    -      -       +      -
    155A  LEU*     4.8    17.0    -      -       +      -
    156A  ASP*     3.7    25.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  TRP*     4.6    18.6    -      -       +      +
     91A  LEU*     3.6    31.2    -      -       +      -
     95A  GLU*     3.4    26.8    +      -       +      +
     96A  THR      3.4     0.2    -      -       -      -
     97A  TRP*     1.3    86.6    -      -       +      +
     99A  ALA*     1.3    60.9    +      -       -      +
    101A  ALA*     3.3     4.9    +      -       -      +
    102A  LEU*     2.9    37.1    +      -       +      +
    153A  LEU*     4.8    10.1    -      -       +      -
    156A  ASP*     3.2    39.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  ARG*     5.9     0.9    -      -       +      -
     12A  TRP*     3.5    45.4    -      -       +      +
     88A  LEU*     3.7    18.1    -      -       +      +
     91A  LEU*     3.6     7.5    -      -       +      +
     95A  GLU      3.3    10.8    +      -       -      +
     96A  THR*     3.8     5.2    -      -       -      +
     97A  TRP      3.3     0.2    -      -       -      -
     98A  LEU*     1.3    79.5    -      -       -      +
    100A  ILE*     1.3    57.7    +      -       -      +
    102A  LEU*     3.8     1.6    -      -       -      +
    103A  ALA*     3.0    30.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TRP*     3.5    28.9    -      -       +      -
     15A  ILE*     4.3     9.4    -      -       +      -
     96A  THR*     3.2    23.4    +      -       -      +
     97A  TRP*     3.9     5.4    -      -       -      +
     99A  ALA*     1.3    74.9    -      -       -      +
    101A  ALA*     1.3    60.5    +      -       -      +
    103A  ALA*     3.2     6.3    +      -       -      +
    104A  LEU*     2.9    36.9    +      -       +      +
    152A  MET*     4.0    16.8    -      -       +      -
    201A  OLC      3.6    40.8    -      -       +      -
    204A  OLC      6.2     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  TRP*     3.1    16.9    +      -       +      +
     98A  LEU*     3.7     4.5    -      -       -      +
    100A  ILE*     1.3    79.4    -      -       -      +
    102A  LEU*     1.3    62.9    +      -       -      +
    104A  LEU      3.5     0.3    +      -       -      -
    105A  VAL*     3.2    29.2    +      -       -      +
    149A  GLY*     3.6    26.3    -      -       -      +
    152A  MET*     3.6    22.4    -      -       +      +
    153A  LEU*     4.1    17.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     3.6    23.4    -      -       +      +
     87A  TRP*     3.5    53.4    -      -       +      +
     88A  LEU*     3.8    42.0    -      -       +      +
     91A  LEU*     4.3     8.5    -      -       +      -
     98A  LEU*     2.9    21.3    +      -       +      +
     99A  ALA      3.8     3.6    -      -       -      +
    101A  ALA*     1.3    76.2    -      -       -      +
    103A  ALA*     1.3    60.1    -      -       -      +
    105A  VAL*     3.3     6.4    +      -       +      +
    106A  LEU*     2.9    30.5    +      -       -      +
    153A  LEU*     4.4    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  TRP*     3.5    29.4    -      -       +      +
     15A  ILE*     3.9    16.1    -      -       +      -
     16A  THR*     2.8    30.3    +      -       -      +
     88A  LEU*     5.0     6.0    -      -       +      +
     99A  ALA      3.0    18.4    +      -       -      +
    100A  ILE*     3.6     5.4    -      -       -      +
    102A  LEU*     1.3    77.8    -      -       -      +
    104A  LEU*     1.3    55.4    +      -       -      +
    106A  LEU*     4.4     1.3    -      -       -      -
    107A  GLY*     3.0    17.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  ILE*     4.3    11.0    -      -       +      -
     19A  VAL*     3.9    23.1    -      -       +      -
    100A  ILE*     2.9    28.1    +      -       +      +
    101A  ALA      3.7     4.5    -      -       -      +
    102A  LEU      3.2     0.2    -      -       -      -
    103A  ALA*     1.3    77.3    -      -       -      +
    105A  VAL*     1.3    61.3    +      -       -      +
    107A  GLY*     3.3     1.6    +      -       -      -
    108A  GLY      3.1    18.2    +      -       -      -
    145A  ALA*     3.4    32.8    -      -       +      +
    148A  VAL*     3.8    28.9    -      -       +      -
    149A  GLY*     3.9     4.3    -      -       -      +
    152A  MET*     3.9    18.2    -      -       -      -
    201A  OLC      4.2    25.6    -      -       +      -
    204A  OLC      4.7     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  VAL*     5.6     0.2    -      -       +      -
     84A  LEU*     3.6    21.3    -      -       +      -
    101A  ALA      3.2    18.0    +      -       -      +
    102A  LEU*     3.8     4.0    -      -       +      +
    104A  LEU*     1.3    75.8    -      -       -      +
    106A  LEU*     1.3    57.2    +      -       -      +
    108A  GLY      3.4     0.5    +      -       -      -
    109A  ALA*     2.9    27.9    +      -       +      +
    146A  ILE*     3.7    19.5    -      -       +      +
    149A  GLY*     3.5    26.5    -      -       -      +
    150A  ALA*     3.6     8.3    -      -       +      +
    153A  LEU*     4.9     9.0    -      -       +      -
    201E  MLE      4.2    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LEU*     3.7    30.5    -      -       +      -
     16A  THR*     3.6    20.2    -      -       +      +
     81A  SER*     3.6    47.1    -      -       -      +
     84A  LEU*     4.2    11.4    -      -       +      +
     85A  VAL*     3.7    19.1    -      -       +      +
     88A  LEU*     5.9     0.7    -      -       +      -
    102A  LEU      2.9    17.7    +      -       -      +
    103A  ALA*     4.4     0.4    -      -       -      -
    104A  LEU      3.2     0.2    -      -       -      -
    105A  VAL*     1.3    78.0    -      -       -      +
    107A  GLY*     1.3    56.8    +      -       -      +
    109A  ALA*     3.2     4.1    +      -       +      +
    110A  LEU*     2.9    45.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  THR*     3.5    29.1    -      -       -      +
     19A  VAL*     3.6    18.7    -      -       -      +
     20A  PHE*     4.2     6.3    -      -       -      -
     23A  ASP*     5.6     0.2    -      -       -      +
    103A  ALA      3.0    13.1    +      -       -      -
    104A  LEU      3.3     1.5    +      -       -      -
    105A  VAL      3.3     0.2    -      -       -      -
    106A  LEU*     1.3    76.9    -      -       -      +
    108A  GLY*     1.3    55.4    +      -       -      +
    110A  LEU*     3.9     2.3    -      -       -      +
    111A  GLY*     3.0    25.5    +      -       -      -
    142A  ALA*     5.0     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  VAL*     3.8     1.8    -      -       -      +
    104A  LEU      3.1    10.9    +      -       -      -
    107A  GLY*     1.3    72.2    -      -       -      +
    109A  ALA*     1.3    65.3    +      -       -      +
    112A  ASN*     3.2    21.1    +      -       -      +
    142A  ALA*     3.3    40.5    -      -       -      +
    145A  ALA*     4.4     1.1    -      -       -      -
    146A  ILE*     3.4    15.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  ALA*     4.2     6.0    -      -       +      +
     80A  VAL*     5.8     0.4    -      -       +      -
     81A  SER*     3.8    18.8    -      -       -      +
     84A  LEU*     5.7     2.2    -      -       +      -
    105A  VAL*     2.9    20.7    +      -       +      +
    106A  LEU*     3.2     7.4    +      -       +      +
    108A  GLY*     1.3    76.8    -      -       -      +
    110A  LEU*     1.3    57.3    +      -       -      +
    112A  ASN*     3.9     1.4    -      -       -      +
    113A  LEU*     2.9    30.0    +      -       -      +
    146A  ILE*     3.6     7.2    -      -       -      +
    201E  MLE      4.2    29.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  THR*     4.1    20.0    -      -       +      -
     20A  PHE*     3.5     7.8    -      -       +      -
     81A  SER*     3.7    25.8    -      -       -      +
    106A  LEU*     2.9    29.1    +      -       +      +
    107A  GLY*     4.1     3.6    -      -       -      +
    109A  ALA*     1.3    75.1    -      -       -      +
    111A  GLY*     1.3    60.7    +      -       -      +
    113A  LEU*     3.6    20.9    -      -       +      +
    114A  TYR*     2.9    30.8    +      -       -      +
    206A  OLC      3.9    40.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  PHE*     3.6    17.7    -      -       -      -
     23A  ASP*     3.6    22.9    -      -       -      -
     24A  GLN*     3.0    20.1    +      -       -      -
     27A  LYS*     3.6     4.5    +      -       -      -
    107A  GLY      3.0    16.4    +      -       -      -
    108A  GLY      3.7     1.6    -      -       -      -
    109A  ALA      3.3     0.4    -      -       -      -
    110A  LEU*     1.3    77.7    -      -       -      +
    112A  ASN*     1.3    60.5    +      -       -      +
    115A  ASP      3.5     8.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  LYS*     2.9    24.8    +      -       -      +
    108A  GLY      3.2     8.6    +      -       -      +
    109A  ALA      4.3     0.9    -      -       -      +
    111A  GLY*     1.3    73.2    -      -       -      +
    113A  LEU*     1.3    65.8    +      -       -      +
    115A  ASP*     3.2     6.0    +      -       -      +
    116A  ARG*     3.0    37.6    +      -       -      +
    122A  VAL*     3.3    11.7    -      -       +      +
    140A  ASN*     3.3     9.5    +      -       -      -
    142A  ALA*     3.4    12.7    -      -       -      +
    143A  ASP*     3.0    27.3    +      -       -      -
    146A  ILE*     4.3     1.8    -      -       -      +
    201E  MLE      3.0    26.5    +      -       -      +
    202E  IIL      3.8     0.2    -      -       -      -
    203E  SER      3.6     5.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  ALA*     3.5    41.3    -      -       +      +
     77A  ALA*     4.0    12.5    -      -       +      +
     78A  ILE*     3.9    24.9    -      -       +      +
    109A  ALA      2.9    19.7    +      -       -      +
    110A  LEU*     3.6    26.2    -      -       +      +
    112A  ASN*     1.3    73.2    -      -       -      +
    114A  TYR*     1.3    66.1    +      -       -      +
    116A  ARG*     3.2     7.9    +      -       -      +
    117A  MET*     3.0    32.1    +      -       +      +
    206A  OLC      4.0    21.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  PHE*     3.8    17.5    -      +       +      -
     24A  GLN*     3.5    27.8    -      -       -      -
    110A  LEU      2.9    17.4    +      -       -      +
    111A  GLY      3.8     4.3    -      -       -      +
    113A  LEU*     1.3    76.5    -      -       -      +
    115A  ASP*     1.3    65.1    +      -       -      +
    118A  VAL*     2.8    66.5    +      -       +      +
    119A  LEU*     5.7     2.7    -      -       +      -
    206A  OLC      3.7    34.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  GLN*     3.7    18.2    +      -       -      +
     27A  LYS*     2.6    42.9    +      -       -      +
    111A  GLY      3.5     3.5    +      -       -      -
    112A  ASN      3.2     9.8    +      -       -      +
    113A  LEU      3.1     0.4    -      -       -      -
    114A  TYR*     1.3    84.0    -      -       -      +
    116A  ARG*     1.3    50.4    +      -       -      +
    119A  LEU*     2.7    62.9    +      -       +      +
    121A  HIS      3.2    17.7    -      -       -      +
    122A  VAL*     3.9     5.6    -      -       -      -
    123A  VAL*     3.5    10.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  ASN      5.4     2.2    +      -       -      +
     55A  THR      6.4     0.2    -      -       -      -
     69A  GLN*     4.1     3.0    +      -       -      +
     70A  ARG*     2.9    49.6    +      -       +      +
     73A  PHE*     3.5    36.0    +      -       -      +
     74A  ALA*     4.1    10.5    -      -       +      +
     77A  ALA*     5.6     2.0    -      -       -      +
    112A  ASN*     3.0    29.5    +      -       -      +
    113A  LEU*     3.2     5.4    +      -       -      +
    115A  ASP*     1.3    76.8    -      -       -      +
    117A  MET*     1.3    59.2    +      -       -      +
    119A  LEU      2.8    12.3    -      -       -      +
    121A  HIS*     4.2    11.0    -      -       -      +
    122A  VAL*     3.7    15.7    -      -       +      +
    201E  MLE      3.6    22.2    +      -       -      -
    202E  IIL      2.6    26.9    +      -       -      -
    203E  SER*     3.0    19.6    +      -       -      +
    205E  5BV      3.6    11.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  ARG*     2.8    26.3    +      -       -      +
     71A  TRP*     3.4    34.8    -      -       +      -
     74A  ALA*     3.4    27.8    -      -       +      -
     78A  ILE*     5.3     7.4    -      -       +      -
    113A  LEU*     3.0    30.5    +      -       +      +
    114A  TYR      3.9     0.9    -      -       -      +
    116A  ARG*     1.3    81.7    -      -       -      +
    118A  VAL*     1.3    61.2    +      -       -      +
    206A  OLC      3.1    68.2    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     70A  ARG*     4.5     2.8    +      -       -      -
    114A  TYR*     2.8    65.0    +      -       +      +
    117A  MET*     1.3    74.9    -      -       +      +
    119A  LEU*     1.3    74.4    +      -       +      +
    206A  OLC      4.6    19.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  GLN*     3.7    28.9    -      -       -      +
     70A  ARG*     3.8     2.6    +      -       -      -
    114A  TYR*     5.7     2.5    -      -       +      -
    115A  ASP*     2.7    41.6    +      -       -      +
    116A  ARG      2.8    14.7    -      -       -      +
    117A  MET      3.5     1.9    -      -       -      +
    118A  VAL*     1.3    90.6    -      -       +      +
    120A  GLY*     1.3    59.7    +      -       -      +
    121A  HIS*     3.1    20.9    -      -       +      +
    123A  VAL*     3.7    18.4    -      -       +      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il