Contacts of the helix formed by residues 87 - 116 (chain A) in PDB entry 1NFV


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 ALA 87 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  MET*     6.0     0.4    -      -       -      -
     85A  GLY      3.7     3.2    +      -       -      -
     86A  GLN*     1.3    73.9    -      -       -      +
     88A  VAL*     1.3    66.5    +      -       -      +
     89A  PRO*     3.4    11.9    -      -       +      -
     90A  VAL*     3.1    18.7    +      -       +      +
     91A  ILE*     3.0    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  LEU*     4.3     8.3    -      -       +      -
     40A  MET*     3.7    33.1    -      -       +      +
     42A  TYR*     4.3    13.0    -      -       +      -
     45A  LEU*     4.7     5.8    -      -       +      -
     86A  GLN      3.9     0.4    +      -       -      -
     87A  ALA*     1.3    70.6    -      -       -      +
     89A  PRO*     1.3    70.6    -      -       +      +
     91A  ILE*     3.3    12.5    +      -       -      +
     92A  TYR*     3.1    28.3    -      -       +      -
    146A  ILE*     3.4    28.3    -      -       +      -
    154A  LEU*     4.5    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  ALA*     3.4    13.0    -      -       +      -
     88A  VAL*     1.3    95.1    -      -       +      +
     90A  VAL*     1.3    59.7    +      -       +      +
     92A  TYR*     3.4     3.6    +      -       +      +
     93A  GLU*     3.0    30.3    +      -       -      +
    143A  GLY*     5.8     1.4    -      -       -      -
    146A  ILE*     4.3    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  GLN*     3.7    28.3    -      -       +      +
     87A  ALA*     3.1    25.7    +      -       +      +
     89A  PRO*     1.3    76.5    -      -       +      +
     91A  ILE*     1.3    59.4    +      -       -      +
     93A  GLU*     4.4    15.3    -      -       -      +
     94A  SER*     2.8    38.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  GLN*     3.7    36.6    -      -       +      +
     36A  SER*     5.0     2.2    -      -       -      -
     37A  LEU*     4.0    24.5    -      -       +      -
     40A  MET*     4.7     6.7    -      -       +      -
     49A  MET*     3.6    30.7    -      -       +      -
     86A  GLN*     3.8    25.1    -      -       +      +
     87A  ALA      3.0    15.8    +      -       -      +
     88A  VAL*     3.3    12.5    +      -       -      +
     90A  VAL*     1.3    77.0    -      -       -      +
     92A  TYR*     1.3    69.2    +      -       +      +
     94A  SER*     3.3     4.5    +      -       -      -
     95A  ASP*     2.9    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  LEU*     3.4    26.3    -      -       +      +
     45A  LEU*     3.4    23.1    +      -       +      +
     49A  MET*     3.9    10.5    -      -       +      +
     88A  VAL*     3.1    34.8    -      -       +      -
     89A  PRO*     3.4     4.5    +      -       +      +
     90A  VAL      3.3     0.2    -      -       -      -
     91A  ILE*     1.3    88.5    -      -       +      +
     93A  GLU*     1.3    67.2    +      -       -      +
     95A  ASP*     4.1     1.7    -      -       -      +
     96A  ALA*     3.0    26.0    +      -       -      +
    138A  TYR*     4.3     4.5    +      +       -      -
    139A  TYR*     3.6    43.5    -      +       -      +
    142A  ILE*     3.7    33.2    -      -       +      -
    143A  GLY*     3.9    16.4    -      -       -      +
    146A  ILE*     3.8    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  PRO      3.0    19.4    +      -       -      +
     90A  VAL*     4.0    15.1    -      -       -      +
     92A  TYR*     1.3    78.2    -      -       -      +
     94A  SER*     1.3    72.1    +      -       -      +
     96A  ALA*     3.4     4.1    +      -       -      +
     97A  ASP*     3.1    39.3    +      -       -      +
    143A  GLY*     5.5     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  GLN*     4.3     0.2    +      -       -      -
     86A  GLN*     3.1    24.5    +      -       -      -
     90A  VAL*     2.8    30.4    +      -       -      -
     91A  ILE*     3.3     4.2    +      -       -      -
     93A  GLU*     1.3    81.3    -      -       -      +
     95A  ASP*     1.3    63.7    +      -       -      +
     97A  ASP*     3.2    11.8    +      -       -      +
     98A  GLN*     2.8    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  GLN*     4.5     4.3    -      -       -      +
     30A  TYR*     3.3    18.2    +      -       +      -
     33A  GLN*     2.6    40.6    +      -       -      +
     49A  MET*     3.4    16.1    -      -       -      +
     91A  ILE      2.9    22.5    +      -       -      +
     92A  TYR      4.1     0.4    -      -       -      +
     93A  GLU      3.3     0.2    -      -       -      -
     94A  SER*     1.3    77.3    +      -       -      +
     96A  ALA*     1.3    66.8    +      -       -      +
     98A  GLN*     3.8     7.2    -      -       -      +
     99A  GLU*     2.9    28.2    +      -       -      +
    139A  TYR*     3.6    27.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  TYR      3.0    18.6    +      -       -      +
     93A  GLU*     3.8     4.9    -      -       -      +
     95A  ASP*     1.3    77.4    -      -       -      +
     97A  ASP*     1.3    63.4    +      -       -      +
     99A  GLU      3.3     0.2    +      -       -      -
    100A  ASP*     3.0    21.9    +      -       -      +
    136A  LEU*     3.4    14.9    -      -       +      +
    139A  TYR*     3.9    12.2    -      -       +      +
    140A  GLU*     3.9    30.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  GLU*     3.1    31.7    +      -       -      +
     94A  SER*     3.4    13.6    -      -       -      +
     96A  ALA*     1.3    79.7    -      -       -      +
     98A  GLN*     1.3    58.3    +      -       -      +
    100A  ASP*     3.4     5.9    +      -       -      +
    101A  ALA*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  MET      4.8     2.2    +      -       -      -
     25A  HIS*     3.4    37.2    +      -       -      -
     26A  ALA*     3.7    26.3    -      -       -      +
     29A  GLN*     3.9    12.5    -      -       -      +
     30A  TYR*     3.9    15.7    +      -       -      +
     94A  SER      2.8    16.9    +      -       -      +
     95A  ASP*     3.8     8.3    -      -       -      +
     97A  ASP*     1.3    76.8    -      -       -      +
     99A  GLU*     1.3    56.6    +      -       -      +
    101A  ALA*     3.2     7.9    +      -       +      +
    102A  THR*     2.8    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  TYR*     2.8    22.6    +      -       -      +
     56A  GLU*     3.2     2.6    -      -       -      +
     95A  ASP      2.9    20.9    +      -       -      +
     96A  ALA      3.8     2.0    -      -       -      +
     98A  GLN*     1.3    75.2    -      -       -      +
    100A  ASP*     1.3    62.6    +      -       -      +
    102A  THR*     3.1     7.5    +      -       -      -
    103A  ILE*     3.0    29.9    +      -       -      +
    132A  GLU*     3.1    21.9    -      -       -      +
    135A  HIS*     3.4    17.8    +      -       +      +
    136A  LEU*     3.8    20.4    -      -       +      +
    139A  TYR*     3.7    19.1    -      -       +      -
    201A   FE      2.2    30.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  ALA      3.0    17.4    +      -       -      +
     97A  ASP*     3.8     6.0    -      -       -      +
     99A  GLU*     1.3    78.1    -      -       -      +
    101A  ALA*     1.3    62.8    +      -       -      +
    103A  ILE*     3.5     5.4    +      -       -      +
    104A  GLU*     3.1    32.5    +      -       -      +
    136A  LEU*     4.2    22.9    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     22A  MET*     4.9     2.2    -      -       +      -
     97A  ASP      3.0    17.9    +      -       -      +
     98A  GLN*     3.2     7.8    +      -       +      +
    100A  ASP*     1.3    80.7    +      -       -      +
    102A  THR*     1.3    60.8    +      -       -      +
    104A  GLU*     3.3     8.2    +      -       -      +
    105A  ALA*     2.9    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  MET*     3.7    19.6    -      -       +      +
     23A  GLU*     4.9     0.7    -      -       -      +
     98A  GLN*     2.8    28.5    +      -       -      +
     99A  GLU*     3.1    14.9    +      -       -      -
    101A  ALA*     1.3    73.0    -      -       -      +
    103A  ILE*     1.3    58.0    +      -       -      +
    105A  ALA*     3.3     1.0    +      -       -      +
    106A  TYR*     2.8    70.2    +      -       +      +
    132A  GLU*     4.3    14.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  GLU      3.0    19.9    +      -       -      +
    100A  ASP*     3.8     5.6    -      -       -      +
    102A  THR*     1.3    74.2    -      -       -      +
    104A  GLU*     1.3    63.9    +      -       +      +
    106A  TYR*     4.1     4.2    -      -       -      +
    107A  SER*     2.6    41.5    +      -       -      +
    129A  ILE*     4.3    19.7    -      -       +      +
    132A  GLU*     3.5    24.9    -      -       +      +
    133A  GLN*     3.8    35.7    -      -       +      +
    136A  LEU*     4.0    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  ASP*     3.1    28.5    +      -       -      +
    101A  ALA*     3.6    10.1    -      -       -      +
    103A  ILE*     1.3    81.8    -      -       +      +
    105A  ALA*     1.3    63.1    +      -       -      +
    107A  SER*     3.4     7.7    +      -       -      -
    108A  GLN*     3.2    42.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  MET*     3.8    25.4    -      -       +      -
    101A  ALA      2.9    16.7    +      -       -      +
    102A  THR      3.7     3.4    -      -       -      +
    104A  GLU*     1.3    77.6    -      -       -      +
    106A  TYR*     1.3    59.2    +      -       -      +
    108A  GLN*     2.9    17.3    +      -       -      +
    109A  PHE*     2.9    39.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  ALA*     3.3    35.0    +      -       +      -
     22A  MET*     3.8    15.5    -      -       +      +
     23A  GLU*     2.5    37.4    +      -       -      +
     63A  PHE*     4.0     4.0    -      +       -      -
    102A  THR*     2.8    47.2    +      -       +      +
    103A  ILE      4.1     0.7    -      -       -      +
    105A  ALA*     1.3    72.2    -      -       -      +
    107A  SER*     1.3    52.5    +      -       -      +
    109A  PHE*     3.1    21.3    +      +       -      +
    110A  LEU*     2.8    35.2    +      -       -      +
    125A  PHE*     3.9    14.9    -      +       +      -
    128A  ILE*     3.8    19.1    -      -       +      -
    129A  ILE*     3.6    26.0    -      -       +      +
    132A  GLU*     3.7     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  ILE*     2.6    28.9    +      -       -      +
    104A  GLU*     3.6     9.1    +      -       -      -
    106A  TYR*     1.3    78.7    -      -       -      +
    108A  GLN*     1.3    61.5    +      -       -      +
    110A  LEU*     3.6     6.2    +      -       -      +
    111A  LYS*     3.4    19.9    +      -       -      +
    129A  ILE*     3.7    18.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  GLU*     3.2    34.7    +      -       -      +
    105A  ALA*     2.9    14.1    +      -       -      +
    107A  SER*     1.3    77.0    -      -       -      +
    109A  PHE*     1.3    70.0    +      -       +      +
    111A  LYS*     3.4    23.1    +      -       -      +
    112A  VAL*     3.2    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  VAL*     3.6    35.1    -      -       +      +
     18A  LYS*     3.7    33.4    -      -       +      -
     19A  ALA*     3.8    18.8    -      -       +      -
     22A  MET*     4.1     9.2    -      -       -      -
    105A  ALA*     2.9    30.6    +      -       +      -
    106A  TYR*     3.1    30.7    +      +       -      +
    108A  GLN*     1.3    81.7    -      -       +      +
    110A  LEU*     1.3    62.6    +      -       -      +
    112A  VAL*     3.0     7.4    +      -       +      +
    113A  CYS*     3.0    25.2    +      -       -      -
    125A  PHE*     3.6    19.7    -      +       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    106A  TYR      2.8    14.9    +      -       -      +
    107A  SER*     3.7     8.3    -      -       -      +
    109A  PHE*     1.3    77.1    -      -       -      +
    111A  LYS*     1.3    57.2    +      -       -      +
    113A  CYS*     3.1    11.2    +      -       -      +
    114A  LYS*     2.9    60.4    +      -       +      +
    122A  ALA*     3.9    16.8    -      -       +      +
    125A  PHE*     3.8    11.4    -      -       +      -
    126A  GLU*     3.3    42.8    -      -       +      +
    129A  ILE*     3.9    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  SER      3.4    10.3    +      -       -      +
    108A  GLN*     3.4    25.7    +      -       -      +
    109A  PHE      3.3     0.2    -      -       -      -
    110A  LEU*     1.3    82.2    -      -       +      +
    112A  VAL*     1.3    59.5    +      -       -      +
    114A  LYS*     3.3    12.2    +      -       +      +
    115A  GLU*     2.9    55.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  LYS*     4.3    14.6    -      -       +      +
     12A  VAL*     5.0     0.9    -      -       -      +
     15A  VAL*     4.1    28.0    -      -       +      -
    108A  GLN      3.2    12.0    +      -       -      +
    109A  PHE*     3.0    11.2    +      -       +      +
    111A  LYS*     1.3    75.5    -      -       +      +
    113A  CYS*     1.3    61.9    +      -       -      +
    115A  GLU*     3.1    16.4    +      -       -      +
    116A  GLN*     2.8    50.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  VAL*     4.0    18.8    -      -       -      -
     15A  VAL*     4.3     4.5    -      -       -      -
    109A  PHE      3.0    17.5    +      -       -      -
    110A  LEU      3.1     8.5    +      -       -      +
    112A  VAL*     1.3    77.8    -      -       -      +
    114A  LYS*     1.3    60.3    +      -       -      +
    116A  GLN      3.2     2.3    +      -       -      -
    117A  GLY      3.2     4.3    +      -       -      -
    118A  ASP*     2.9    43.1    +      -       +      +
    121A  THR*     3.4    33.2    -      -       -      -
    122A  ALA*     3.9     9.0    -      -       +      -
    125A  PHE*     3.8    17.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  LEU*     2.9    41.2    +      -       +      +
    111A  LYS*     3.6    14.0    -      -       +      +
    112A  VAL      3.2     0.2    -      -       -      -
    113A  CYS*     1.3    76.0    -      -       -      +
    115A  GLU*     1.3    63.9    +      -       +      +
    117A  GLY*     3.3    12.7    +      -       -      -
    118A  ASP      4.9     2.5    -      -       -      +
    119A  ILE*     5.5     9.0    -      -       +      +
    122A  ALA*     4.3     9.9    -      -       +      -
    126A  GLU*     4.7     9.0    -      -       -      -
   1004A  SO4      5.1    14.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LYS*     2.9    45.0    +      -       +      +
    112A  VAL*     3.1    18.8    +      -       -      +
    114A  LYS*     1.3    78.1    -      -       +      +
    116A  GLN*     1.3    69.1    +      -       -      +
    117A  GLY      3.2     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  ASP*     4.5     0.3    -      -       -      -
      8A  ARG*     3.2    59.9    +      -       -      +
     11A  LYS*     3.6    38.0    +      -       +      +
     12A  VAL*     3.8    19.7    -      -       +      -
    112A  VAL*     2.8    35.5    +      -       +      +
    113A  CYS      3.2     1.5    +      -       -      +
    115A  GLU*     1.3    87.2    +      -       -      +
    117A  GLY*     1.3    62.4    +      -       -      +
    118A  ASP*     3.4     2.4    +      -       -      +
----------------------------------------------------------
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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