Contacts of the helix formed by residues 101 - 126 (chain J) in PDB entry 2YW7


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 101 (chain J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42J  VAL*     3.8     3.5    -      -       -      +
     43J  VAL      3.9    17.0    -      -       -      +
     44J  GLY*     5.5     0.4    -      -       -      -
     45J  PRO*     4.4    14.4    -      -       +      -
    100J  ASP*     1.3    98.3    +      -       -      +
    102J  VAL*     1.3    68.3    +      -       -      +
    103J  GLN*     4.3     7.1    +      -       -      +
    104J  ALA*     3.4    12.4    +      -       -      +
    105J  HIS*     3.3    26.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 102 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42J  VAL*     4.6    13.5    -      -       +      -
     43J  VAL      5.0     3.3    +      -       -      +
     45J  PRO*     4.2    22.2    -      -       +      +
     46J  ASN*     3.4    22.0    -      -       +      +
     47J  PHE*     5.1     1.1    -      -       -      +
     50J  VAL*     3.2    35.2    -      -       +      -
    101J  THR*     1.3    75.6    -      -       -      +
    103J  GLN*     1.3    79.1    +      -       +      +
    104J  ALA      2.9     9.5    +      -       -      -
    105J  HIS      3.3     0.6    +      -       -      +
    106J  LEU*     3.1    44.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 103 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45F  PRO*     6.0     3.6    -      -       -      +
     45J  PRO*     6.1     2.7    -      -       +      -
    101J  THR*     4.3     5.7    +      -       -      +
    102J  VAL*     1.3    86.4    -      -       +      +
    104J  ALA*     1.3    55.3    +      -       -      +
    106J  LEU*     4.9     6.2    -      -       -      +
    107J  ALA*     3.4    21.7    +      -       -      +
    156J  LEU*     3.5    41.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 104 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97J  VAL*     4.8     6.0    -      -       +      +
    100J  ASP*     3.2    39.0    -      -       +      +
    101J  THR*     3.4    10.2    +      -       -      +
    102J  VAL      2.9     0.6    -      -       -      -
    103J  GLN*     1.3    79.3    -      -       -      +
    105J  HIS*     1.3    66.3    +      -       -      +
    107J  ALA*     3.4     6.1    -      -       -      +
    108J  ALA*     3.3    17.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 105 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37J  HIS*     5.3     0.7    -      +       -      -
     38J  VAL*     3.6    25.6    -      -       +      +
     41J  ASN*     2.5    32.5    +      -       +      +
     42J  VAL*     3.3    17.5    -      -       +      -
     95J  TYR*     2.7    29.8    +      +       -      +
     97J  VAL*     3.3    36.3    -      -       +      +
     98J  GLU      2.9    16.8    +      -       -      -
    100J  ASP*     4.3     4.6    +      -       +      -
    101J  THR      3.3    13.1    +      -       -      +
    102J  VAL      4.1     1.6    -      -       -      +
    104J  ALA*     1.3    74.5    -      -       -      +
    106J  LEU*     1.3    53.6    +      -       +      +
    107J  ALA      3.0     3.6    -      -       -      -
    108J  ALA*     2.8     8.6    +      -       -      +
    109J  LEU*     2.6    38.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 106 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38J  VAL*     5.4     0.4    -      -       +      -
     50J  VAL*     3.7    27.6    -      -       +      -
     53J  MET*     4.3    12.3    -      -       +      -
     54J  ILE*     5.2     1.8    -      -       +      -
    102J  VAL*     3.1    30.4    +      -       +      +
    103J  GLN*     4.9     4.9    -      -       -      +
    105J  HIS*     1.3    82.6    -      -       +      +
    107J  ALA*     1.3    55.3    +      -       -      +
    109J  LEU*     3.8    15.7    -      -       +      -
    110J  ASP*     3.1    22.9    +      -       -      +
    152J  VAL*     3.2    30.8    -      -       +      +
    155J  HIS*     3.6    35.9    -      -       +      +
    156J  LEU*     5.5     4.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 107 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103J  GLN      3.4    16.7    +      -       -      +
    104J  ALA*     3.4    12.6    +      -       -      +
    105J  HIS      3.0     0.4    -      -       -      -
    106J  LEU*     1.3    78.8    -      -       -      +
    108J  ALA*     1.3    61.7    +      -       -      +
    110J  ASP*     3.3    18.7    -      -       -      +
    111J  LEU*     3.8    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 108 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95J  TYR*     4.0    12.6    -      -       +      +
     96J  SER*     5.7     0.2    -      -       -      +
     97J  VAL*     3.6    31.2    -      -       +      -
    104J  ALA      3.3     4.7    +      -       -      +
    105J  HIS      2.8     9.1    +      -       -      +
    107J  ALA*     1.3    73.0    -      -       -      +
    109J  LEU*     1.3    65.9    +      -       -      +
    110J  ASP      3.2     0.4    -      -       -      -
    111J  LEU*     3.2    21.2    +      -       -      +
    112J  VAL*     3.3    14.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 109 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31J  LEU*     5.1     0.7    -      -       +      -
     34J  THR*     4.6     9.0    -      -       +      -
     35J  LEU*     3.8    33.9    -      -       +      -
     38J  VAL*     3.8    36.1    -      -       +      -
     54J  ILE*     4.7     7.0    -      -       +      -
     95J  TYR*     4.1     4.1    +      -       -      +
    105J  HIS      2.6    20.4    +      -       -      +
    106J  LEU*     3.8    16.6    -      -       +      +
    108J  ALA*     1.3    72.7    -      -       -      +
    110J  ASP*     1.3    62.4    +      -       -      +
    112J  VAL*     3.3    27.5    +      -       +      +
    113J  TYR*     3.3    31.1    +      -       +      -
    148J  PHE*     5.1     7.4    -      -       +      -
    152J  VAL*     4.9     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 110 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106J  LEU      3.1    14.8    +      -       -      +
    107J  ALA*     3.3    15.3    -      -       -      +
    108J  ALA      3.2     0.2    -      -       -      -
    109J  LEU*     1.3    78.2    -      -       -      +
    111J  LEU*     1.3    60.0    +      -       -      +
    113J  TYR*     3.5     5.8    +      -       -      +
    114J  ASN*     3.1    26.8    +      -       -      +
    149J  GLN*     2.7    33.9    +      -       -      +
    152J  VAL*     4.4    10.9    -      -       +      +
    153J  ARG*     3.6    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 111 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107J  ALA      3.8    15.4    +      -       -      +
    108J  ALA*     3.2    12.7    +      -       -      +
    110J  ASP*     1.3    81.3    -      -       +      +
    112J  VAL*     1.3    68.2    +      -       -      +
    114J  ASN*     3.4    16.7    +      -       +      +
    115J  GLY*     3.2    15.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 112 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30J  ASP*     5.5     5.4    -      -       -      +
     31J  LEU*     4.6    13.0    -      -       +      -
     34J  THR*     4.8     7.2    -      -       +      -
     92J  TRP*     6.0     6.5    -      -       +      +
     95J  TYR*     4.1    22.4    -      -       +      -
    108J  ALA      3.3    14.1    +      -       -      +
    109J  LEU*     3.3    19.9    +      -       +      +
    111J  LEU*     1.3    77.2    -      -       -      +
    113J  TYR*     1.3    63.6    +      -       +      +
    115J  GLY*     2.9    19.4    +      -       -      -
    116J  VAL*     3.0    25.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 113 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31J  LEU*     3.7    32.9    -      -       +      +
     35J  LEU*     3.4    10.8    -      -       +      +
     57J  GLN*     2.8    44.4    +      -       -      +
     61J  VAL*     4.4     0.2    -      -       -      +
    109J  LEU*     3.3    29.1    +      -       +      +
    110J  ASP*     3.7     9.6    -      -       -      +
    112J  VAL*     1.3    79.0    -      -       +      +
    114J  ASN*     1.3    61.2    +      -       -      +
    115J  GLY      3.0     1.6    -      -       -      -
    116J  VAL*     2.7     8.9    +      -       +      -
    117J  ILE*     2.6    55.9    +      -       +      +
    145J  LEU*     4.1    15.3    -      -       +      -
    148J  PHE*     3.2    27.3    -      +       +      -
    149J  GLN*     3.9    12.8    -      -       +      -
    152J  VAL*     6.2     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 114 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110J  ASP*     3.1    12.1    +      -       -      +
    111J  LEU*     3.5    22.9    -      -       +      +
    113J  TYR*     1.3    76.1    -      -       -      +
    115J  GLY*     1.3    56.3    +      -       -      +
    117J  ILE*     4.0     5.0    -      -       -      +
    118J  GLU*     2.9    49.6    +      -       -      +
    149J  GLN*     2.9    36.1    +      -       -      +
    153J  ARG*     3.1    15.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 115 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111J  LEU      3.2     5.5    +      -       -      -
    112J  VAL      2.9    10.8    +      -       -      -
    113J  TYR      2.9     0.4    +      -       -      -
    114J  ASN*     1.3    75.2    -      -       -      +
    116J  VAL*     1.3    63.3    +      -       -      -
    118J  GLU*     3.3    12.9    +      -       -      +
    119J  ASP*     3.0    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 116 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24J  GLN*     5.1     0.4    -      -       -      +
     27J  THR*     4.0    30.7    -      -       +      +
     28J  TYR*     4.8     7.6    -      -       +      -
     31J  LEU*     3.8    30.7    -      -       +      -
     92J  TRP*     6.3     0.7    -      -       +      -
    112J  VAL*     3.0    21.9    +      -       +      +
    113J  TYR*     2.7    16.3    +      -       +      +
    115J  GLY*     1.3    68.0    -      -       -      +
    117J  ILE*     1.3    64.9    +      -       +      +
    119J  ASP*     3.2     2.6    +      -       -      +
    120J  THR*     2.7    40.0    +      -       -      +
    145J  LEU*     3.8    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 117 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113J  TYR*     2.6    60.1    +      -       +      +
    114J  ASN*     4.0     5.4    -      -       -      +
    116J  VAL*     1.3    74.0    -      -       +      +
    118J  GLU*     1.3    58.0    +      -       +      +
    120J  THR*     4.2     5.4    -      -       -      -
    121J  ARG*     2.6    67.0    +      -       +      +
    142J  ALA*     6.2     0.9    -      -       -      +
    145J  LEU*     4.1    15.5    -      -       +      -
    146J  GLU*     3.7    28.7    -      -       +      +
    149J  GLN*     3.7    22.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 118 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114J  ASN*     2.9    46.6    +      -       -      +
    115J  GLY*     3.3     9.8    +      -       -      +
    117J  ILE*     1.3    77.5    -      -       +      +
    119J  ASP*     1.3    53.3    -      -       -      +
    121J  ARG*     3.3     8.9    -      -       -      +
    122J  LYS*     2.7    63.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 119 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24J  GLN*     4.6     4.7    -      -       -      +
     27J  THR*     5.5     8.2    +      -       +      +
     91J  THR*     4.5    11.8    +      -       -      -
     92J  TRP*     5.0     9.4    -      -       -      -
    115J  GLY*     3.0    17.8    +      -       -      +
    116J  VAL*     3.8     3.6    -      -       -      +
    118J  GLU*     1.3    74.7    -      -       -      +
    120J  THR*     1.3    57.7    +      -       -      +
    122J  LYS*     3.2    28.2    +      -       -      +
    123J  SER*     2.5    38.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 120 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24J  GLN*     3.3    33.2    +      -       -      +
     28J  TYR*     4.0     9.6    -      -       -      +
    116J  VAL*     2.7    40.3    +      -       -      +
    117J  ILE*     3.5     6.5    -      -       -      -
    119J  ASP*     1.3    70.5    -      -       -      +
    121J  ARG*     1.3    65.8    +      -       -      +
    123J  SER*     2.9     3.6    +      -       -      -
    124J  ILE*     2.8    26.9    +      -       +      +
    138J  LEU*     4.4    13.9    -      -       +      +
    142J  ALA*     4.4    27.8    -      -       +      +
    145J  LEU*     3.9     5.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 121 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71C  ARG*     3.9     2.4    -      -       -      +
     75C  LEU*     3.7    20.0    -      -       -      +
    131C  ASP*     4.0    15.7    +      -       -      +
    133C  VAL*     5.6     7.9    -      -       +      +
    117J  ILE*     2.6    39.3    +      -       +      +
    118J  GLU*     3.3     7.4    -      -       -      +
    120J  THR*     1.3    72.6    -      -       -      +
    122J  LYS*     1.3    61.2    +      -       +      +
    124J  ILE*     3.3    13.8    +      -       -      +
    125J  GLU*     3.2    30.6    +      -       -      +
    142J  ALA*     5.5     2.4    -      -       +      +
    146J  GLU*     2.7    42.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 122 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118J  GLU*     2.7    45.3    +      -       -      +
    119J  ASP*     3.2    31.6    +      -       -      +
    120J  THR      3.0     0.2    -      -       -      -
    121J  ARG*     1.3    71.0    -      -       +      +
    123J  SER*     1.3    65.4    +      -       -      +
    125J  GLU*     3.0    23.5    +      -       -      +
    126J  LYS*     3.2    19.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 123 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20J  LEU*     3.5    31.4    +      -       -      +
     24J  GLN*     3.9    18.2    +      -       -      -
    119J  ASP      2.5    19.5    +      -       -      -
    120J  THR      3.5     3.4    -      -       -      -
    122J  LYS*     1.3    72.3    -      -       -      +
    124J  ILE*     1.3    62.1    -      -       -      +
    126J  LYS*     3.3    24.9    +      -       -      +
    127J  LEU*     3.5    13.5    +      -       -      +
    138J  LEU*     3.5    15.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 124 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132C  LEU*     4.1    13.2    -      -       +      -
    133C  VAL*     4.3     5.8    -      -       +      -
    120J  THR*     2.8    18.9    +      -       +      +
    121J  ARG*     3.3    14.4    -      -       -      +
    123J  SER*     1.3    72.1    -      -       -      +
    125J  GLU*     1.3    67.2    +      -       +      +
    126J  LYS      3.0     1.6    -      -       -      -
    127J  LEU*     3.0    13.9    +      -       -      +
    135J  GLN*     3.1    36.0    +      -       +      +
    138J  LEU*     3.7    23.1    -      -       +      -
    139J  ILE*     3.5    48.5    -      -       +      +
    142J  ALA*     3.7    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 125 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  LEU      5.6     2.1    -      -       -      +
    132C  LEU*     5.1    15.5    -      -       +      -
    121J  ARG*     3.2    16.4    +      -       -      +
    122J  LYS*     3.0    13.4    +      -       -      +
    124J  ILE*     1.3    80.8    -      -       +      +
    126J  LYS*     1.3    59.9    +      -       +      +
    127J  LEU      3.5     0.3    +      -       -      -
    128J  GLU*     4.1    13.1    +      -       -      +
    129J  ASP*     5.1     3.1    -      -       -      +
    135J  GLN*     5.1     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 126 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20J  LEU*     3.4    38.7    -      -       +      +
     23J  LYS*     5.5     5.9    -      -       -      +
    122J  LYS*     3.4    18.4    -      -       +      +
    123J  SER*     3.5    11.9    -      -       -      +
    124J  ILE      3.0     0.8    -      -       -      -
    125J  GLU*     1.3    80.2    -      -       +      +
    127J  LEU*     1.3    59.1    +      -       -      +
    128J  GLU      3.7     0.4    -      -       -      -
    129J  ASP*     4.7     4.2    +      -       -      +
    130J  LEU*     4.2    18.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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