Contacts of the helix formed by residues 113 - 139 (chain K) in PDB entry 1F33


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 ASN 113 (chain K).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55K  ARG*     3.4     9.0    -      -       -      +
     56K  GLY*     5.0     5.0    -      -       -      -
     57K  ALA      5.6     0.9    +      -       -      -
    112K  HIS*     1.3    80.8    -      -       -      +
    114K  VAL*     1.3    68.1    +      -       -      +
    115K  GLN*     2.8    47.1    -      -       -      +
    116K  ASP*     3.1    35.5    +      -       -      +
    117K  HIS*     3.2    11.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 114 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54K  MET*     4.4    12.8    -      -       +      -
     55K  ARG      2.9    37.5    +      -       -      +
     56K  GLY*     3.8     6.1    -      -       -      +
     57K  ALA      3.4    28.3    -      -       -      +
     58K  ASN*     4.4     1.3    -      -       +      +
     59K  PHE*     4.2    10.8    -      -       -      -
     62K  VAL*     4.2    23.6    -      -       +      -
    112K  HIS      4.1     1.3    -      -       -      -
    113K  ASN*     1.3    74.4    -      -       -      +
    115K  GLN*     1.3    63.5    +      -       +      +
    117K  HIS*     3.2     4.7    +      -       -      +
    118K  LEU*     2.8    46.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 115 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57J  ALA*     5.8     0.6    -      -       -      +
     57K  ALA*     5.3     4.2    +      -       +      +
     58K  ASN*     5.9     2.6    -      -       -      +
    113K  ASN*     2.8    23.5    -      -       -      +
    114K  VAL*     1.3    78.0    -      -       +      +
    116K  ASP*     1.3    61.5    +      -       -      +
    118K  LEU*     3.3    13.2    +      -       -      +
    119K  LYS*     3.0    42.7    +      -       -      +
    165K  ASN      3.2    21.6    +      -       -      -
    166K  ILE*     3.3    14.2    -      -       -      +
    167K  GLU*     2.8    52.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 116 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111K  ILE*     4.1    29.5    -      -       +      +
    112K  HIS      4.8     0.5    +      -       -      -
    113K  ASN*     3.1    32.5    +      -       -      +
    115K  GLN*     1.3    79.7    -      -       -      +
    117K  HIS*     1.3    62.8    +      -       -      +
    119K  LYS*     3.3    13.7    +      -       -      +
    120K  GLU*     3.0    26.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 117 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49K  GLN*     4.6     2.2    -      -       -      -
     50K  ALA*     3.4    20.3    -      -       +      +
     53K  ASN*     3.4    18.2    +      -       +      -
     54K  MET*     3.6    27.4    -      -       +      -
    107K  TYR*     2.6    36.0    +      +       -      +
    108K  PRO      4.9     1.3    -      -       -      -
    111K  ILE*     3.2    41.0    +      -       +      +
    112K  HIS*     3.3    23.8    -      -       -      -
    113K  ASN      3.2     8.3    +      -       -      -
    114K  VAL      3.2     7.3    +      -       -      +
    116K  ASP*     1.3    76.1    -      -       -      +
    118K  LEU*     1.3    56.4    +      -       -      +
    120K  GLU      3.2     0.5    +      -       -      -
    121K  LEU*     2.7    41.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 118 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54K  MET*     5.0     1.1    -      -       +      -
     58K  ASN*     5.7     0.7    -      -       +      +
     62K  VAL*     3.8    28.3    -      -       +      -
     65K  MET*     5.1     3.6    -      -       +      -
    114K  VAL*     2.8    33.2    +      -       +      +
    115K  GLN*     3.5    16.4    -      -       -      +
    116K  ASP      3.3     0.2    -      -       -      -
    117K  HIS*     1.3    79.2    -      -       -      +
    119K  LYS*     1.3    56.5    +      -       -      +
    121K  LEU*     4.5     9.4    -      -       +      -
    122K  ALA*     2.8    25.5    +      -       -      +
    162K  ILE*     3.3    39.9    -      -       +      +
    165K  ASN*     3.7    34.1    -      -       +      +
    166K  ILE*     3.9    10.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 119 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18I  ARG*     4.3     9.9    +      -       -      +
    115K  GLN*     3.0    35.3    +      -       -      +
    116K  ASP*     3.7    13.0    +      -       -      +
    118K  LEU*     1.3    73.0    -      -       -      +
    120K  GLU*     1.3    68.0    +      -       +      +
    122K  ALA*     3.3     7.9    +      -       -      +
    123K  ASP*     3.1    30.2    +      -       -      +
    166K  ILE*     4.0    33.2    -      -       +      -
    167K  GLU      5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 120 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107K  TYR*     3.5    21.1    -      -       +      +
    108K  PRO*     3.9    11.5    -      -       +      +
    111K  ILE*     3.7    20.9    -      -       +      +
    116K  ASP*     3.0    20.3    +      -       +      +
    117K  HIS      3.7     2.5    -      -       -      +
    119K  LYS*     1.3    76.7    -      -       -      +
    121K  LEU*     1.3    61.4    +      -       -      +
    123K  ASP*     3.5    11.5    +      -       -      +
    124K  ARG*     2.8    59.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 121 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46K  ILE*     3.9    27.1    -      -       +      +
     47K  THR*     4.2     9.2    -      -       -      -
     50K  ALA*     3.6    32.1    -      -       +      -
     66K  LEU*     3.7    32.5    -      -       +      -
    107K  TYR*     4.0     2.9    -      -       +      +
    117K  HIS*     2.7    31.1    +      -       +      +
    118K  LEU*     3.7    11.4    -      -       +      +
    120K  GLU*     1.3    70.8    -      -       -      +
    122K  ALA*     1.3    56.6    +      -       -      +
    124K  ARG*     3.1     3.8    +      -       -      -
    125K  TYR*     2.7    51.6    +      -       +      -
    162K  ILE*     4.1    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 122 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18I  ARG*     3.4    36.3    -      -       -      +
    118K  LEU      2.8    18.3    +      -       -      +
    119K  LYS*     3.3     4.5    +      -       -      +
    121K  LEU*     1.3    75.8    -      -       -      +
    123K  ASP*     1.3    56.9    +      -       -      +
    125K  TYR*     4.5     1.1    -      -       -      -
    126K  ALA*     2.8    32.6    +      -       -      +
    159K  LEU*     3.5     9.0    -      -       -      +
    162K  ILE*     3.9    15.4    -      -       +      +
    163K  GLU*     4.3     7.6    -      -       +      -
    166K  ILE*     4.3     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 123 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18I  ARG*     2.8    29.4    +      -       -      +
    119K  LYS*     3.1    14.3    +      -       -      +
    120K  GLU*     3.6    16.3    -      -       -      +
    121K  LEU      3.2     0.2    -      -       -      -
    122K  ALA*     1.3    77.2    -      -       -      +
    124K  ARG*     1.3    69.4    +      -       -      +
    126K  ALA*     3.3     4.1    +      -       -      +
    127K  ILE*     3.1    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 124 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43K  LEU*     3.8    18.6    -      -       +      -
     46K  ILE*     4.2    13.7    -      -       +      +
    104K  LEU*     3.8    19.1    -      -       +      +
    105K  LYS*     3.0    50.1    +      -       -      +
    106K  SER      3.7     6.5    +      -       -      -
    107K  TYR*     2.8    36.7    -      -       -      +
    108K  PRO*     3.6    14.5    -      -       -      +
    120K  GLU*     2.8    43.2    +      -       -      +
    121K  LEU*     3.1     6.2    +      -       -      +
    123K  ASP*     1.3    77.2    -      -       -      +
    125K  TYR*     1.3    68.0    +      -       -      +
    127K  ILE*     3.2     9.6    +      -       -      +
    128K  VAL*     3.1    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 125 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43K  LEU*     3.5    34.5    -      -       +      -
     47K  THR*     2.7    32.3    +      -       +      +
     66K  LEU*     5.4     0.7    -      -       +      -
     69K  PHE*     3.6    16.4    -      +       -      +
     73K  LEU*     3.5    12.2    -      -       +      +
    121K  LEU*     2.7    41.9    +      -       +      +
    122K  ALA      3.8     2.9    -      -       -      +
    124K  ARG*     1.3    72.9    -      -       -      +
    126K  ALA*     1.3    54.0    +      -       -      +
    128K  VAL*     3.3     1.0    +      -       -      +
    129K  ALA*     2.6    40.3    +      -       -      +
    155K  LEU*     4.2     8.7    -      -       +      +
    158K  PHE*     3.7    37.9    -      +       +      -
    159K  LEU*     4.2    13.2    -      -       +      -
    162K  ILE*     3.5    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 126 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18I  ARG*     3.4    33.0    -      -       +      -
    122K  ALA      2.8    19.3    +      -       -      +
    123K  ASP*     3.4     6.3    -      -       -      +
    125K  TYR*     1.3    77.0    -      -       -      +
    127K  ILE*     1.3    55.1    +      -       +      +
    129K  ALA*     4.2     0.2    -      -       -      -
    130K  ASN*     2.7    47.4    +      -       -      +
    159K  LEU*     3.9    15.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 127 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39K  GLN*     4.3    10.8    -      -       -      +
    103K  PRO*     4.5    17.3    -      -       +      +
    104K  LEU*     3.9    23.3    -      -       +      -
    105K  LYS*     5.5     3.1    -      -       +      +
    123K  ASP*     3.1    19.2    +      -       +      +
    124K  ARG*     3.2    11.9    +      -       -      +
    126K  ALA*     1.3    76.5    -      -       +      +
    128K  VAL*     1.3    62.9    +      -       -      +
    130K  ASN*     4.1     4.2    -      -       -      +
    131K  ASP*     3.0    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 128 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39K  GLN*     3.3    36.3    -      -       +      +
     40K  PHE*     3.7    27.8    -      -       +      -
     43K  LEU*     3.9    18.8    -      -       +      -
    104K  LEU*     3.9    17.5    -      -       +      -
    124K  ARG      3.1    14.3    +      -       -      +
    125K  TYR      3.9     4.0    -      -       -      +
    127K  ILE*     1.3    74.7    -      -       -      +
    129K  ALA*     1.3    59.5    +      -       -      +
    131K  ASP*     3.7     0.5    -      -       -      +
    132K  VAL*     2.9    30.3    +      -       -      +
    155K  LEU*     3.6    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 129 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125K  TYR      2.6    24.8    +      -       -      +
    126K  ALA*     3.7     6.1    -      -       -      +
    128K  VAL*     1.3    74.3    -      -       -      +
    130K  ASN*     1.3    62.6    +      -       -      +
    132K  VAL*     3.2     9.5    -      -       -      +
    133K  ARG*     3.0    30.5    +      -       -      +
    155K  LEU*     3.9    23.5    -      -       +      +
    156K  ASP*     3.7    17.9    -      -       -      +
    159K  LEU*     4.4    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 130 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18I  ARG      3.0    20.6    +      -       -      -
     19I  ASN*     3.5     4.0    -      -       -      -
     20I  ASP*     2.7    38.4    +      -       -      +
    126K  ALA*     2.7    31.3    +      -       -      +
    127K  ILE*     4.2     3.3    -      -       -      +
    129K  ALA*     1.3    73.1    -      -       -      +
    131K  ASP*     1.3    63.4    +      -       -      +
    133K  ARG*     2.4    35.5    +      -       -      +
    134K  LYS*     3.3    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 131 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35K  ARG*     2.8    40.6    +      -       -      -
     36K  GLN*     3.6     2.1    -      -       -      +
     39K  GLN*     3.0    26.3    +      -       -      +
    103K  PRO*     5.8     0.2    -      -       -      +
    127K  ILE*     3.0    21.6    +      -       +      +
    128K  VAL      3.7     2.5    -      -       -      +
    130K  ASN*     1.3    73.9    -      -       -      +
    132K  VAL*     1.3    67.3    +      -       -      +
    134K  LYS*     3.0    11.6    +      -       -      +
    135K  ALA*     3.0    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 132 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36K  GLN*     3.6    27.8    -      -       -      +
     40K  PHE*     4.3    19.7    -      -       +      -
    128K  VAL      2.9    19.0    +      -       -      +
    129K  ALA*     3.2    16.6    -      -       -      +
    131K  ASP*     1.3    74.9    -      -       -      +
    133K  ARG*     1.3    66.8    +      -       -      +
    135K  ALA*     3.2    10.7    +      -       -      +
    136K  ILE*     3.3    13.4    +      -       -      +
    148K  LEU*     3.9    35.9    -      -       +      +
    151K  ALA*     4.7     2.0    -      -       +      -
    152K  SER*     4.0    20.2    -      -       -      +
    155K  LEU*     4.8     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 133 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19I  ASN*     3.0    21.1    +      -       -      +
     20I  ASP*     3.0    15.1    +      -       -      -
     21I  VAL*     3.3    22.6    -      -       -      +
     83I  ARG*     4.1     5.4    -      -       -      +
    141I  ASP*     4.3     6.7    -      -       -      +
    142I  ASP*     4.4     7.0    -      -       +      +
    143I  ASP*     4.0     8.7    -      -       -      +
    129K  ALA*     3.0    21.4    +      -       -      +
    130K  ASN*     2.4    34.6    +      -       -      +
    131K  ASP      3.2     0.2    -      -       -      -
    132K  VAL*     1.3    77.9    -      -       -      +
    134K  LYS*     1.3    65.2    +      -       +      +
    136K  ILE*     3.4    23.5    -      -       +      +
    137K  GLY      4.4     0.5    +      -       -      -
    152K  SER*     3.6    14.8    -      -       -      +
    156K  ASP*     2.5    43.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 134 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20I  ASP*     2.4    44.9    +      -       -      -
    130K  ASN*     3.3    19.2    +      -       -      +
    131K  ASP*     3.0    10.1    +      -       -      +
    133K  ARG*     1.3    76.7    -      -       +      +
    135K  ALA*     1.3    66.3    +      -       -      +
    136K  ILE      3.0     3.7    +      -       -      -
    137K  GLY*     3.1    12.6    +      -       -      -
    138K  GLU*     3.3    14.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 135 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32K  LEU*     3.9    19.6    -      -       +      +
     35K  ARG*     4.3     4.0    -      -       -      +
     36K  GLN*     3.6    23.3    -      -       -      +
    131K  ASP      3.0     8.7    +      -       -      +
    132K  VAL*     3.2    10.5    +      -       -      +
    134K  LYS*     1.3    77.7    -      -       -      +
    136K  ILE*     1.3    57.0    +      -       -      +
    138K  GLU*     3.1    13.7    +      -       -      +
    139K  ALA*     2.8    31.0    +      -       -      +
    148K  LEU*     3.8    13.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 136 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142I  ASP*     3.8    27.8    -      -       +      +
    143I  ASP*     3.5    25.8    -      -       -      +
    132K  VAL      3.5     8.3    -      -       -      +
    133K  ARG*     3.4    19.5    -      -       +      +
    134K  LYS      3.0     0.2    -      -       -      -
    135K  ALA*     1.3    77.4    -      -       -      +
    137K  GLY*     1.3    62.3    +      -       -      +
    139K  ALA*     3.2    20.7    +      -       -      +
    145K  ALA*     4.0    14.3    -      -       +      +
    148K  LEU*     3.9    22.4    -      -       +      +
    149K  THR*     3.5    29.8    -      -       -      +
    152K  SER*     3.7    12.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 137 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142I  ASP*     4.4     9.6    +      -       -      -
    133K  ARG      4.4     0.4    +      -       -      -
    134K  LYS      3.1     7.4    +      -       -      -
    136K  ILE*     1.3    81.9    -      -       -      +
    138K  GLU*     1.3    59.7    +      -       -      +
    139K  ALA      3.1     6.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 138 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32K  LEU*     3.6    30.3    -      -       +      +
     35K  ARG*     3.8    12.7    +      -       -      -
    134K  LYS*     3.3    12.8    +      -       -      +
    135K  ALA*     3.1    13.3    +      -       -      +
    137K  GLY*     1.3    77.0    -      -       -      +
    139K  ALA*     1.3    60.4    +      -       -      +
    140K  LYS*     3.5    12.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 139 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32K  LEU*     4.1    11.4    -      -       +      -
    135K  ALA      2.8    10.8    +      -       -      +
    136K  ILE      3.4    16.6    -      -       -      +
    137K  GLY      3.1     6.1    -      -       -      +
    138K  GLU*     1.3    76.2    -      -       -      +
    140K  LYS*     1.3    64.3    +      -       -      +
    141K  ASP      4.4     1.1    -      -       -      +
    144K  THR*     4.3     7.0    -      -       +      -
    145K  ALA*     4.0    30.9    -      -       -      +
    148K  LEU*     4.1    10.5    -      -       +      -
----------------------------------------------------------
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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