Contacts of the helix formed by residues 92 - 119 (chain M) in PDB entry 1MFR


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 THR 92 (chain M).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37M  PHE*     3.6    20.0    -      -       -      -
     44M  LEU*     3.8     7.8    -      -       -      +
     47M  VAL*     4.1    17.4    -      -       +      +
     91M  ASN*     1.3    73.2    -      -       -      +
     93M  LEU*     1.3    58.0    +      -       -      +
     95M  ALA*     3.9     1.2    -      -       -      +
     96M  MET*     3.0    38.0    +      -       +      +
    151M  LEU*     4.1     8.3    -      -       +      -
    156M  LEU*     4.0     7.0    -      -       -      -
    163M  GLU*     2.8    31.0    +      -       +      +
    166M  PHE*     3.8    33.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 93 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91M  ASN*     2.9    10.7    +      -       -      +
     92M  THR*     1.3    75.0    -      -       -      +
     94M  GLU*     1.3    62.0    +      -       -      +
     96M  MET*     3.3     1.4    +      -       -      +
     97M  GLN*     2.9    52.9    +      -       -      +
    148M  ILE*     3.9    29.8    -      -       +      +
    151M  LEU*     3.9    23.8    -      -       +      -
    152M  LYS*     4.3    16.2    -      -       +      -
    156M  LEU*     3.4    18.6    -      -       +      +
    157M  PRO*     3.7    35.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 94 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86M  ARG*     3.0    39.3    +      -       -      +
     89M  TRP      3.4    11.9    -      -       -      +
     90M  GLY*     3.7     8.3    -      -       -      -
     91M  ASN*     3.1    27.0    +      -       -      +
     92M  THR      3.4     0.2    -      -       -      -
     93M  LEU*     1.3    79.1    -      -       -      +
     95M  ALA*     1.3    57.3    +      -       -      +
     97M  GLN*     3.5    14.8    +      -       -      +
     98M  ALA*     3.0    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33M  MET*     3.8    10.1    -      -       -      +
     37M  PHE*     3.7    26.7    -      -       +      -
     51M  PHE*     4.1    10.8    -      -       +      -
     89M  TRP*     3.7    16.3    +      -       +      -
     91M  ASN      3.0    18.4    +      -       -      +
     92M  THR      3.9     2.9    -      -       -      +
     94M  GLU*     1.3    76.0    -      -       -      +
     96M  MET*     1.3    60.5    +      -       -      +
     98M  ALA*     3.4     7.7    +      -       -      +
     99M  ALA*     2.9    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 96 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47M  VAL*     4.6     4.5    -      -       +      -
     50M  PHE*     4.0    16.2    -      -       +      -
     51M  PHE*     3.7    31.2    -      -       +      -
     92M  THR*     3.0    26.6    +      -       +      +
     93M  LEU      3.7     3.1    -      -       -      +
     95M  ALA*     1.3    73.9    -      -       -      +
     97M  GLN*     1.3    61.6    +      -       -      +
     99M  ALA*     3.5     2.0    -      -       -      +
    100M  LEU*     2.8    24.3    +      -       -      +
    144M  ILE*     3.4    19.7    -      -       +      +
    147M  PHE*     3.9    34.1    -      -       +      -
    148M  ILE*     3.8    18.6    -      -       +      -
    151M  LEU*     3.8    17.3    -      -       +      -
    166M  PHE*     4.3    15.9    -      -       +      -
    171M  VAL*     5.3     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 97 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93M  LEU*     2.9    43.9    +      -       +      +
     94M  GLU*     3.8    14.1    -      -       -      +
     96M  MET*     1.3    71.9    -      -       -      +
     98M  ALA*     1.3    65.5    +      -       -      +
    100M  LEU*     3.3     3.7    +      -       -      +
    101M  GLN*     3.1    25.6    +      -       -      +
    148M  ILE*     4.0    20.7    -      -       +      +
    152M  LYS*     4.1    21.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 98 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33M  MET*     4.0     4.7    -      -       +      +
     85M  GLU*     5.4     4.3    -      -       -      +
     86M  ARG*     5.6     2.5    -      -       -      +
     89M  TRP*     3.8    32.3    -      -       +      -
     94M  GLU      3.0    16.2    +      -       -      +
     95M  ALA      3.5     8.5    -      -       -      +
     97M  GLN*     1.3    76.1    -      -       -      +
     99M  ALA*     1.3    58.5    -      -       -      +
    101M  GLN*     3.4     7.1    +      -       -      +
    102M  LEU*     3.0    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 99 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30M  TYR*     3.9    26.9    -      -       +      +
     33M  MET*     4.2     5.3    -      -       +      +
     51M  PHE*     4.2     8.5    -      -       +      -
     95M  ALA      2.9    17.3    +      -       -      +
     96M  MET*     3.5    10.3    -      -       -      +
     98M  ALA*     1.3    74.3    -      -       -      +
    100M  LEU*     1.3    59.8    +      -       -      +
    102M  LEU*     3.2     6.3    +      -       -      +
    103M  GLU*     2.9    34.6    +      -       -      +
    144M  ILE*     4.1    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 100 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3L  GLN*     3.8    37.9    -      -       +      +
      4L  VAL*     4.9     0.7    -      -       +      -
     96M  MET      2.8    19.7    +      -       -      +
     97M  GLN*     3.3     6.0    +      -       -      +
     99M  ALA*     1.3    72.2    -      -       -      +
    101M  GLN*     1.3    59.3    +      -       +      +
    103M  GLU*     3.4     3.7    +      -       -      +
    104M  LYS*     3.0    41.9    +      -       +      +
    141M  ILE*     3.9    42.0    -      -       +      +
    144M  ILE*     3.9    11.6    -      -       +      +
    145M  GLY*     4.5     3.4    -      -       -      +
    148M  ILE*     3.7    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 101 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97M  GLN      3.1    11.6    +      -       -      +
     98M  ALA*     3.7     9.4    -      -       -      +
    100M  LEU*     1.3    76.7    -      -       +      +
    102M  LEU*     1.3    61.8    +      -       -      +
    104M  LYS*     3.2    10.8    +      -       -      +
    105M  THR*     2.9    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 102 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22M  LEU*     5.4     1.6    -      -       +      -
     25M  TYR*     4.1    27.6    -      -       +      -
     26M  ALA*     3.9    24.2    -      -       +      +
     29M  THR*     3.7    28.3    -      -       +      -
     30M  TYR*     3.9    33.2    -      -       +      +
     98M  ALA      3.0    17.8    +      -       -      +
     99M  ALA*     3.2     6.0    +      -       -      +
    101M  GLN*     1.3    76.1    -      -       -      +
    103M  GLU*     1.3    60.2    +      -       +      +
    105M  THR*     3.4    10.6    +      -       +      -
    106M  VAL*     3.1    35.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 103 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26M  ALA*     6.5     0.4    -      -       -      -
     30M  TYR*     2.8    28.2    +      -       -      +
     54M  HIS*     3.6    14.4    +      -       -      -
     58M  GLU*     3.4    12.5    -      -       -      +
     99M  ALA      2.9    14.3    +      -       -      +
    100M  LEU*     3.8     5.4    -      -       -      +
    102M  LEU*     1.3    76.7    -      -       -      +
    104M  LYS*     1.3    59.4    +      -       -      +
    106M  VAL*     3.3     5.2    +      -       -      +
    107M  ASN*     2.8    25.6    +      -       -      +
    137M  GLN*     3.0    29.1    +      -       -      +
    140M  ASP*     4.4     7.4    -      -       +      -
    141M  ILE*     3.9    15.0    -      -       +      -
    144M  ILE*     3.9    14.6    -      -       +      -
    177M   MG      2.9    28.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 104 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2L  SER      4.9     0.4    +      -       -      -
      3L  GLN*     2.8    31.8    +      -       -      +
      4L  VAL      4.4     9.9    -      -       -      +
      5L  ARG      3.6    16.6    +      -       -      -
      6L  GLN*     3.1    38.8    +      -       +      +
    100M  LEU*     3.0    30.1    +      -       +      +
    101M  GLN*     3.7     9.0    -      -       -      +
    103M  GLU*     1.3    73.9    -      -       -      +
    105M  THR*     1.3    56.8    +      -       -      +
    107M  ASN*     4.1     0.4    -      -       -      -
    108M  GLN*     2.9    25.6    +      -       -      +
    141M  ILE*     4.2    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 105 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22M  LEU*     4.6    19.3    -      -       +      -
     25M  TYR*     6.5     0.4    -      -       +      -
    101M  GLN*     2.9    20.3    +      -       -      +
    102M  LEU*     3.5    13.4    -      -       +      +
    104M  LYS*     1.3    76.6    -      -       -      +
    106M  VAL*     1.3    61.9    +      -       -      +
    108M  GLN*     3.4     7.0    +      -       -      +
    109M  ALA*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 106 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19M  MET*     5.1     1.6    -      -       -      -
     22M  LEU*     3.9    30.5    -      -       +      +
     23M  GLU*     4.0     9.6    -      -       -      +
     26M  ALA*     4.2    24.2    -      -       +      -
     58M  GLU*     4.9     0.7    -      -       -      +
    102M  LEU*     3.1    19.5    +      -       +      +
    103M  GLU*     3.7    10.1    -      -       -      +
    105M  THR*     1.3    71.9    -      -       -      +
    107M  ASN*     1.3    65.2    +      -       -      +
    109M  ALA*     3.2     3.3    +      -       -      +
    110M  LEU*     3.0    30.6    +      -       +      +
    137M  GLN*     3.9    12.3    -      -       -      +
    176M   MG      3.8    22.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 107 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6L  GLN*     3.1    39.0    +      -       -      +
    103M  GLU      2.8    21.3    +      -       -      +
    105M  THR      3.3     0.2    -      -       -      -
    106M  VAL*     1.3    73.0    -      -       -      +
    108M  GLN*     1.3    57.7    +      -       -      +
    110M  LEU*     3.1     9.9    +      -       -      +
    111M  LEU*     2.9    42.1    +      -       -      +
    134M  LEU*     4.8     8.8    -      -       -      +
    137M  GLN*     3.6    22.4    -      -       -      +
    138M  VAL*     5.0    10.3    -      -       -      +
    141M  ILE*     3.9    17.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 108 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6L  GLN*     3.5    21.0    +      -       -      +
      7L  ASN*     5.8     2.1    -      -       -      +
    104M  LYS      2.9    18.6    +      -       -      +
    105M  THR*     3.6     6.7    -      -       -      +
    107M  ASN*     1.3    79.2    -      -       -      +
    109M  ALA*     1.3    57.4    +      -       -      +
    111M  LEU*     3.4    16.0    +      -       -      +
    112M  ASP*     2.9    62.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 109 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19M  MET*     3.1    19.9    -      -       +      +
     22M  LEU*     3.7    22.7    -      -       +      -
    105M  THR      3.1    12.8    +      -       -      +
    106M  VAL      3.2     9.6    +      -       -      +
    108M  GLN*     1.3    78.6    -      -       -      +
    110M  LEU*     1.3    57.2    +      -       -      +
    112M  ASP*     3.4    10.1    +      -       -      +
    113M  LEU*     2.9    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 110 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19M  MET*     3.7    24.7    -      -       +      -
     23M  GLU*     4.9     2.2    -      -       -      +
     65M  PHE*     4.0    20.4    -      -       +      -
    106M  VAL*     3.0    25.5    +      -       +      +
    107M  ASN*     3.4     6.5    -      -       -      +
    109M  ALA*     1.3    74.6    -      -       -      +
    111M  LEU*     1.3    61.2    +      -       -      +
    113M  LEU*     3.4     3.0    +      -       -      +
    114M  HIS*     2.9    26.3    +      -       -      +
    129M  LEU*     4.2    15.0    -      -       +      +
    133M  TYR*     3.9    32.1    -      -       +      -
    134M  LEU*     3.9    15.8    -      -       +      +
    137M  GLN*     3.7    31.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 111 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6L  GLN*     4.5     4.7    -      -       +      -
      7L  ASN*     3.8    32.1    -      -       +      +
    123L  PRO*     3.7    34.8    -      -       +      +
    124L  HIS*     5.3     4.5    -      -       +      +
    107M  ASN*     2.9    43.7    +      -       -      +
    108M  GLN*     3.7    19.3    -      -       -      +
    110M  LEU*     1.3    75.9    -      -       -      +
    112M  ASP*     1.3    59.2    +      -       -      +
    114M  HIS*     3.2     6.1    +      -       -      +
    115M  LYS*     3.0    27.4    +      -       -      +
    134M  LEU*     4.6    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 112 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108M  GLN*     2.9    48.5    +      -       -      +
    109M  ALA*     3.4    10.1    -      -       -      +
    111M  LEU*     1.3    76.1    -      -       -      +
    113M  LEU*     1.3    60.9    +      -       -      +
    115M  LYS*     3.3     8.0    +      -       -      +
    116M  LEU*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 113 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12M  CYS*     4.3     8.5    -      -       -      +
     15M  ALA*     3.5    31.0    -      -       +      +
     16M  VAL*     4.3    17.5    -      -       +      -
     19M  MET*     3.7    34.1    -      -       +      -
     65M  PHE*     4.5     2.2    -      -       +      -
    109M  ALA      2.9    16.8    +      -       -      +
    110M  LEU*     3.7     5.6    -      -       +      +
    112M  ASP*     1.3    76.5    -      -       -      +
    114M  HIS*     1.3    59.3    +      -       -      +
    116M  LEU*     3.4    10.6    +      -       +      +
    117M  ALA*     3.0    26.0    +      -       -      +
    125M  LEU*     4.4    10.1    -      -       +      -
    129M  LEU*     3.9    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 114 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121L  VAL*     6.1     1.2    -      -       -      +
    123L  PRO*     3.5    36.9    -      -       +      +
    110M  LEU      2.9    14.1    +      -       -      +
    111M  LEU*     3.3    12.1    -      -       -      +
    112M  ASP      3.1     0.4    -      -       -      -
    113M  LEU*     1.3    75.4    -      -       -      +
    115M  LYS*     1.3    59.7    +      -       -      +
    117M  ALA*     3.3     3.9    +      -       -      +
    118M  THR*     2.9    43.0    +      -       -      -
    126M  CYS*     3.6    31.3    +      -       -      +
    129M  LEU*     3.8    19.0    -      -       +      +
    130M  GLU*     2.9    25.6    +      -       -      -
    134M  LEU*     4.2     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 115 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121L  VAL*     4.3    24.9    -      -       +      -
    111M  LEU      3.0    12.8    +      -       -      +
    112M  ASP*     3.3    11.4    +      -       -      +
    114M  HIS*     1.3    74.8    +      -       -      +
    116M  LEU*     1.3    60.0    +      -       -      +
    118M  THR*     3.2    10.0    +      -       +      +
    119M  ASP*     2.9    29.7    +      -       -      +
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Residues in contact with LEU 116 (chain M). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11M  ASP*     3.6    39.5    -      -       +      +
     12M  CYS*     4.0    11.7    -      -       -      -
     15M  ALA*     3.7    20.0    -      -       +      -
     18M  ARG*     5.4     2.2    -      -       -      +
    112M  ASP      3.0    15.0    +      -       -      +
    113M  LEU*     3.6    10.1    -      -       +      +
    115M  LYS*     1.3    76.6    -      -       -      +
    117M  ALA*     1.3    57.6    +      -       -      +
    119M  ASP*     3.3     5.5    +      -       +      +
    120M  LYS*     2.9    49.5    +      -       +      +
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Residues in contact with ALA 117 (chain M). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12M  CYS*     4.3    10.5    -      -       -      -
    113M  LEU      3.0    13.1    +      -       -      +
    114M  HIS*     3.3    10.7    +      -       -      +
    116M  LEU*     1.3    74.1    -      -       -      +
    118M  THR*     1.3    64.2    +      -       -      +
    120M  LYS      3.5     0.5    +      -       -      -
    121M  VAL      3.1     3.8    +      -       -      -
    122M  ASP*     2.9    34.8    +      -       +      +
    125M  LEU*     3.9    28.0    -      -       +      -
    126M  CYS*     3.6    17.7    -      -       -      +
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Residues in contact with THR 118 (chain M). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121L  VAL*     6.4     2.5    -      -       +      -
    114M  HIS*     2.9    31.3    +      -       -      -
    115M  LYS*     3.5    10.5    -      -       +      +
    117M  ALA*     1.3    76.6    -      -       -      +
    119M  ASP*     1.3    62.5    +      -       -      +
    121M  VAL*     3.1    17.5    +      -       -      +
    126M  CYS*     3.5    15.1    -      -       -      -
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Residues in contact with ASP 119 (chain M). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115M  LYS      2.9    16.1    +      -       -      +
    116M  LEU*     3.6     8.3    -      -       +      +
    118M  THR*     1.3    79.7    -      -       -      +
    120M  LYS*     1.3    74.1    +      -       +      +
    121M  VAL*     3.4     9.4    +      -       -      +
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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