Contacts of the helix formed by residues 95 - 122 (chain L) in PDB entry 1QGH


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 MET 95 (chain L).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  HIS*     5.4     2.0    -      -       +      -
     34L  MET*     3.7    35.7    -      -       +      -
     35L  ARG      3.4    34.4    +      -       -      +
     36L  GLY*     4.6     2.0    -      -       -      +
     38L  ASN*     4.0    15.0    -      -       +      +
     39L  PHE*     3.9    24.2    -      -       -      +
     42L  LEU*     3.4    31.9    -      -       +      -
     93L  LYS      4.1     0.6    +      -       -      -
     94L  THR*     1.3    75.2    -      -       +      +
     96L  ASP*     1.3    55.3    +      -       -      +
     98L  LEU*     3.1     9.0    +      -       -      +
     99L  MET*     2.6    45.8    +      -       -      +
    149L  PHE*     3.9    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 96 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  HIS*     2.9    40.7    +      -       -      -
     94L  THR*     3.0    14.0    -      -       +      +
     95L  MET*     1.3    77.1    -      -       -      +
     97L  GLN*     1.3    68.5    +      -       +      +
     99L  MET*     3.7     0.5    -      -       -      +
    100L  GLU*     2.8    37.4    +      -       -      +
    149L  PHE*     3.7     9.5    -      -       -      -
    150L  LEU*     3.8    23.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 97 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91L  LYS*     4.8     9.4    -      -       -      +
     92L  PRO      4.4     2.6    -      -       -      +
     93L  LYS*     3.5    33.1    -      -       +      +
     94L  THR*     2.6    48.9    +      -       -      +
     96L  ASP*     1.3    76.6    -      -       +      +
     98L  LEU*     1.3    62.4    +      -       -      +
    100L  GLU*     3.3    13.9    +      -       -      +
    101L  ASP*     3.0    21.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 98 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29L  GLN*     5.4     1.6    -      -       +      +
     30L  ILE*     3.8    26.9    -      -       +      +
     33L  TYR*     4.7     3.1    -      -       +      +
     34L  MET*     3.9    37.2    -      -       +      +
     35L  ARG      5.2     0.4    -      -       -      +
     89L  TYR*     4.3    11.9    -      -       +      +
     93L  LYS*     2.8    55.9    -      -       +      +
     94L  THR      2.6    23.5    +      -       -      +
     95L  MET*     3.4     9.6    -      -       -      +
     97L  GLN*     1.3    73.0    -      -       -      +
     99L  MET*     1.3    71.0    +      -       +      +
    101L  ASP*     2.9    20.3    +      -       -      +
    102L  LEU*     2.9    13.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 99 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30L  ILE*     3.7    32.5    -      -       +      -
     34L  MET*     4.8     0.4    -      -       +      -
     42L  LEU*     4.2    17.7    -      -       +      -
     46L  MET*     4.4    10.3    -      -       +      -
     95L  MET*     2.6    26.7    +      -       -      +
     96L  ASP      3.8     2.9    -      -       -      +
     98L  LEU*     1.3    77.1    -      -       +      +
    100L  GLU*     1.3    52.7    +      -       -      +
    102L  LEU*     3.0     9.2    +      -       +      +
    103L  VAL*     2.7    37.3    +      -       -      +
    146L  PHE*     3.7    35.2    -      -       +      +
    149L  PHE*     3.5    26.0    -      -       +      -
    150L  LEU*     4.0    22.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 100 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96L  ASP*     2.8    27.5    +      -       -      +
     97L  GLN*     3.6    15.5    +      -       -      +
     99L  MET*     1.3    74.8    -      -       -      +
    101L  ASP*     1.3    64.5    +      -       -      +
    103L  VAL*     4.0     3.4    -      -       -      +
    104L  GLY*     2.9    21.7    +      -       -      -
    150L  LEU*     3.8    26.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 101 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26L  LYS*     3.2    40.4    +      -       -      +
     29L  GLN*     4.6     5.7    +      -       -      -
     30L  ILE*     5.1     3.6    -      -       +      +
     93L  LYS*     3.8    19.9    +      -       -      +
     97L  GLN      3.0    11.1    +      -       -      +
     98L  LEU      2.9    11.2    +      -       -      +
    100L  GLU*     1.3    77.2    -      -       -      +
    102L  LEU*     1.3    63.4    +      -       -      +
    104L  GLY*     3.4     1.1    +      -       -      -
    105L  THR*     3.1    22.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 102 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  PHE*     3.4    34.3    -      -       +      -
     26L  LYS*     5.2     1.3    -      -       -      -
     27L  ILE*     4.9     2.5    -      -       +      -
     30L  ILE*     4.1    18.8    -      -       +      +
     46L  MET*     4.0     8.5    -      -       +      -
     49L  LEU*     3.8    27.8    -      -       +      -
     98L  LEU      2.9    11.0    +      -       -      +
     99L  MET*     3.1    13.2    -      -       +      +
    101L  ASP*     1.3    77.7    -      -       -      +
    103L  VAL*     1.3    63.3    +      -       -      +
    105L  THR*     3.0     6.2    +      -       -      -
    106L  LEU*     2.9    26.2    +      -       +      +
    146L  PHE*     3.8    38.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 103 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99L  MET      2.7    20.3    +      -       -      +
    100L  GLU*     4.0     6.1    -      -       -      +
    102L  LEU*     1.3    74.1    -      -       -      +
    104L  GLY*     1.3    59.5    +      -       -      +
    106L  LEU*     3.2    11.5    +      -       +      +
    107L  GLU*     2.8    39.3    +      -       +      +
    143L  ILE*     5.0     7.6    -      -       +      +
    146L  PHE*     3.4    39.9    -      -       +      -
    147L  LYS*     3.7    32.3    -      -       +      +
    150L  LEU*     4.4     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 104 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100L  GLU      2.9    17.5    +      -       -      -
    101L  ASP*     3.8     1.6    -      -       -      -
    103L  VAL*     1.3    77.6    -      -       -      +
    105L  THR*     1.3    56.7    +      -       -      +
    107L  GLU*     3.1    15.3    +      -       -      +
    108L  LEU*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 105 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  PHE*     3.4    36.3    -      -       +      -
     26L  LYS*     3.4    19.2    +      -       -      -
     84L  VAL*     3.8    31.2    -      -       +      +
     85L  GLU      5.1     0.3    +      -       -      -
    101L  ASP*     3.1    14.2    +      -       -      -
    102L  LEU      3.0     9.0    +      -       -      -
    104L  GLY*     1.3    72.8    -      -       -      +
    106L  LEU*     1.3    65.4    +      -       -      +
    108L  LEU*     3.2     7.9    +      -       +      +
    109L  LEU*     2.9    25.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 106 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23L  PHE*     3.8    19.7    -      -       +      -
     49L  LEU*     5.6     2.0    -      -       +      -
     53L  PHE*     3.9    24.9    -      -       +      -
    102L  LEU*     2.9    31.4    +      -       +      +
    103L  VAL*     3.2    15.9    +      -       +      +
    105L  THR*     1.3    75.6    -      -       -      +
    107L  GLU*     1.3    58.8    +      -       -      +
    109L  LEU*     3.1     7.2    +      -       +      +
    110L  ARG*     2.7    30.3    +      -       -      +
    139L  ILE*     3.7    13.0    -      -       +      +
    142L  HIS*     4.0    24.7    -      -       +      -
    143L  ILE*     3.8    19.1    -      -       +      +
    146L  PHE*     4.3    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 107 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103L  VAL*     2.8    29.0    +      -       +      +
    104L  GLY*     3.6    12.7    -      -       -      +
    106L  LEU*     1.3    76.7    -      -       -      +
    108L  LEU*     1.3    62.2    -      -       -      +
    110L  ARG*     3.1    25.3    +      -       -      +
    111L  ASP*     3.0    31.5    +      -       -      +
    143L  ILE*     3.9    18.9    -      -       +      +
    147L  LYS*     3.3    23.2    +      -       -      -
    154L  PRO      4.3     5.0    -      -       -      +
    156L  GLU*     3.4    25.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 108 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19L  ASN*     4.2     0.2    -      -       -      +
     83L  SER*     3.7    30.1    -      -       -      +
     84L  VAL*     4.0    23.8    -      -       +      -
     85L  GLU      5.3     0.9    -      -       -      +
    104L  GLY      2.9    13.7    +      -       -      +
    105L  THR*     3.2    10.5    +      -       -      +
    107L  GLU*     1.3    77.0    -      -       -      +
    109L  LEU*     1.3    65.6    +      -       +      +
    111L  ASP*     3.3     6.8    +      -       -      +
    112L  GLU*     2.9    57.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 109 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16L  GLN*     3.7    23.1    -      -       -      +
     19L  ASN*     4.1    22.2    -      -       +      +
     20L  LEU*     4.3    13.9    -      -       +      -
     23L  PHE*     3.6    39.0    -      -       +      -
     53L  PHE*     4.6     7.9    -      -       +      -
     84L  VAL*     4.4     1.1    -      -       +      -
    105L  THR*     2.9    22.6    +      -       +      +
    106L  LEU*     3.6     8.1    -      -       +      +
    108L  LEU*     1.3    77.2    -      -       +      +
    110L  ARG*     1.3    57.8    -      -       -      +
    112L  GLU*     3.2     1.8    +      -       -      -
    113L  TYR*     2.7    50.1    +      -       +      +
    139L  ILE*     4.2    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 110 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106L  LEU      2.7    13.7    +      -       -      +
    107L  GLU*     3.4    33.4    +      -       -      +
    109L  LEU*     1.3    78.7    -      -       -      +
    111L  ASP*     1.3    86.7    +      -       -      +
    113L  TYR*     3.3     6.1    +      -       -      +
    114L  LYS*     2.9    28.4    +      -       +      +
    136L  LYS*     4.1    21.4    -      -       +      +
    139L  ILE*     3.9    15.8    -      -       +      +
    140L  ASP*     3.1    27.8    -      -       -      +
    143L  ILE*     3.8    19.6    -      -       +      +
    154L  PRO      5.0     0.4    +      -       -      -
    155L  LEU*     3.7    27.6    -      -       -      +
    156L  GLU*     5.5     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 111 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107L  GLU*     3.0    21.9    +      -       -      +
    108L  LEU*     3.8     5.7    -      -       -      +
    109L  LEU      3.2     0.2    -      -       -      -
    110L  ARG*     1.3   112.2    +      -       -      +
    112L  GLU*     1.3    61.5    +      -       +      +
    114L  LYS*     3.2    16.7    -      -       -      +
    115L  GLN*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 112 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12L  PHE*     3.1    12.0    -      -       +      -
     15L  HIS*     3.0    10.2    +      -       -      -
     16L  GLN*     3.0    19.0    +      -       -      +
     19L  ASN*     2.9    21.8    +      -       -      -
     83L  SER*     2.4    27.4    +      -       -      -
    108L  LEU*     2.9    35.9    +      -       +      +
    109L  LEU*     3.9     3.8    -      -       -      +
    111L  ASP*     1.3    74.1    -      -       +      +
    113L  TYR*     1.3    67.8    +      -       -      +
    115L  GLN*     2.9    20.8    +      -       +      +
    116L  GLY      3.0    10.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 113 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12L  PHE*     3.9     9.1    -      +       -      -
     16L  GLN*     3.5    33.7    -      -       +      +
     20L  LEU*     3.5    24.8    -      -       -      +
     56L  GLN*     3.0    19.2    +      -       -      -
     60L  VAL*     4.8     1.2    -      -       +      +
    109L  LEU*     2.7    35.1    +      -       +      +
    110L  ARG*     3.6     5.8    -      -       -      +
    112L  GLU*     1.3    72.8    -      -       -      +
    114L  LYS*     1.3    54.3    +      -       -      +
    116L  GLY      2.9     2.4    +      -       -      -
    117L  ILE*     2.5    47.3    +      -       +      +
    132L  LEU*     4.0    20.2    -      -       +      +
    135L  PHE*     3.4    41.1    -      +       +      -
    136L  LYS*     4.2     7.0    -      -       +      -
    139L  ILE*     3.9    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 114 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124G  GLY*     3.7    14.7    +      -       -      -
    126G  ASP*     2.4    37.5    +      -       -      +
    110L  ARG*     2.9    14.2    +      -       +      +
    111L  ASP*     3.2    15.3    -      -       -      +
    112L  GLU      3.1     0.2    -      -       -      -
    113L  TYR*     1.3    77.3    -      -       -      +
    115L  GLN*     1.3    68.0    +      -       -      +
    117L  ILE*     3.1    13.8    +      -       +      +
    118L  GLU*     3.0    53.4    +      -       -      +
    136L  LYS*     4.6    12.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 115 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12L  PHE*     4.7     5.2    -      -       +      -
    111L  ASP*     2.9    27.3    +      -       -      +
    112L  GLU*     2.9    16.5    +      -       +      +
    114L  LYS*     1.3    84.1    -      -       -      +
    116L  GLY*     1.3    59.5    +      -       -      +
    118L  GLU*     3.0    16.6    +      -       -      +
    119L  LEU*     2.8    31.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 116 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12L  PHE*     3.5    34.3    -      -       -      -
    112L  GLU      3.0     7.3    +      -       -      -
    113L  TYR      2.9     6.5    +      -       -      -
    115L  GLN*     1.3    73.2    -      -       -      +
    117L  ILE*     1.3    70.1    +      -       -      +
    119L  LEU*     3.5     6.5    -      -       -      +
    120L  THR*     2.9    26.2    +      -       -      -
    132L  LEU*     4.0     6.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 117 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126G  ASP*     3.8    32.8    -      -       +      +
    113L  TYR      2.5    24.5    +      -       -      +
    114L  LYS*     3.5    11.9    -      -       +      +
    115L  GLN      3.1     0.2    -      -       -      -
    116L  GLY*     1.3    74.3    -      -       -      +
    118L  GLU*     1.3    64.3    +      -       -      +
    120L  THR*     2.9    21.0    -      -       -      +
    121L  ASP*     3.1     6.4    +      -       +      +
    129L  ASN*     3.1    20.8    +      -       -      +
    132L  LEU*     3.8    17.7    -      -       +      +
    133L  ILE*     3.8    33.2    -      -       +      +
    136L  LYS*     4.0    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 118 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114L  LYS*     3.0    45.0    +      -       -      +
    115L  GLN*     3.4    19.2    -      -       -      +
    117L  ILE*     1.3    78.7    -      -       -      +
    119L  LEU*     1.3    65.2    +      -       -      +
    121L  ASP*     3.0     9.0    -      -       -      +
    122L  LYS*     2.8    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7L  VAL*     4.3    15.5    -      -       +      +
      8L  ASP*     3.9    25.6    -      -       -      +
      9L  THR*     4.5     2.9    -      -       -      +
     12L  PHE*     4.0    20.4    -      -       +      -
    115L  GLN*     2.8    19.3    +      -       +      +
    116L  GLY*     3.5     5.2    -      -       -      +
    118L  GLU*     1.3    76.3    -      -       -      +
    120L  THR*     1.3    55.4    +      -       -      +
    121L  ASP      2.8     0.4    -      -       -      -
    122L  LYS*     2.9    11.6    +      -       +      +
    123L  GLU*     2.8    63.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 120 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9L  THR*     4.1    13.4    +      -       -      +
    116L  GLY*     2.9    13.0    +      -       -      +
    117L  ILE*     2.9    11.7    -      -       -      +
    119L  LEU*     1.3    82.6    -      -       -      +
    121L  ASP*     1.3    55.5    -      -       -      +
    123L  GLU*     3.8     1.5    -      -       -      -
    124L  GLY      3.1     2.9    +      -       -      -
    125L  ASP*     2.8    38.1    +      -       -      +
    128L  THR*     3.5    29.3    -      -       -      +
    129L  ASN*     2.9    47.8    +      -       +      +
    132L  LEU*     4.5     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 121 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126G  ASP*     5.4     3.5    -      -       -      +
    117L  ILE*     3.2    12.9    -      -       -      +
    118L  GLU*     3.0    13.9    -      -       -      +
    119L  LEU      2.8     0.2    -      -       -      -
    120L  THR*     1.3    80.1    -      -       -      +
    122L  LYS*     1.3    62.1    +      -       -      +
    123L  GLU      2.9     1.1    -      -       -      -
    124L  GLY*     2.8    21.5    +      -       -      -
    129L  ASN*     4.0    12.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 122 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118L  GLU      2.8    12.7    +      -       -      +
    119L  LEU*     2.9    15.2    +      -       +      +
    121L  ASP*     1.3    75.7    -      -       -      +
    123L  GLU*     1.3    62.2    +      -       +      +
    124L  GLY      3.6     0.3    +      -       -      -
----------------------------------------------------------
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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