Contacts of the helix formed by residues 92 - 121 (chain A) in PDB entry 2ZA6


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 A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  PHE*     4.2     3.6    -      -       -      -
     90A  TRP      3.6     1.4    -      -       -      +
     91A  GLY*     1.3    78.0    -      -       -      -
     93A  THR*     1.3    66.6    +      -       -      +
     94A  PRO*     3.1    25.6    -      -       -      +
     95A  ASP*     2.9    21.9    +      -       -      +
     96A  ALA*     3.0    20.3    +      -       -      +
    164A  GLU*     3.8    17.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  PHE*     4.0    11.5    -      -       -      -
     45A  LEU*     3.5    18.7    -      -       -      +
     48A  VAL*     4.0    22.2    -      -       +      +
     92A  THR*     1.3    71.3    -      -       -      +
     94A  PRO*     1.3    64.1    -      -       -      +
     96A  ALA*     3.2     3.1    +      -       -      +
     97A  MET*     2.9    32.8    +      -       +      +
    152A  ILE*     3.8    26.7    -      -       +      -
    164A  GLU*     2.7    37.1    +      -       -      +
    167A  PHE*     4.4    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  THR*     3.1    20.6    -      -       -      +
     93A  THR*     1.3    93.9    -      -       -      +
     95A  ASP*     1.3    60.7    +      -       -      +
     97A  MET*     4.5     0.9    -      -       +      -
     98A  LYS*     3.0    39.0    +      -       -      +
    149A  LEU*     3.8    17.4    -      -       +      +
    152A  ILE*     3.4    25.5    -      -       +      -
    153A  GLN*     4.9     7.2    -      -       +      -
    156A  VAL*     4.3    21.5    -      -       +      -
    164A  GLU*     4.4     2.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  GLN*     6.3     0.4    -      -       -      +
     90A  TRP      3.4    12.6    -      -       -      +
     91A  GLY*     3.5     8.3    -      -       -      -
     92A  THR*     2.9    38.7    +      -       -      +
     94A  PRO*     1.3    78.0    -      -       -      +
     96A  ALA*     1.3    58.2    +      -       -      +
     98A  LYS*     3.4    14.3    +      -       -      +
     99A  ALA*     3.1    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  LEU*     3.7    19.6    -      -       +      +
     38A  PHE*     3.5    39.0    -      -       +      -
     48A  VAL*     5.4     0.2    -      -       +      -
     52A  PHE*     3.8    11.1    -      -       +      -
     90A  TRP*     4.1     7.0    -      -       -      +
     92A  THR      3.0     5.6    +      -       -      +
     93A  THR      3.6     5.2    -      -       -      +
     95A  ASP*     1.3    73.5    -      -       -      +
     97A  MET*     1.3    61.2    +      -       -      +
     99A  ALA*     3.3     5.7    +      -       -      +
    100A  ALA*     2.9    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  VAL*     5.8     1.1    -      -       +      -
     51A  PHE*     3.8    36.3    -      -       +      -
     52A  PHE*     4.3    10.4    -      -       +      -
     93A  THR*     2.9    21.2    +      -       +      +
     94A  PRO      4.0     3.4    -      -       -      +
     96A  ALA*     1.3    75.8    -      -       -      +
     98A  LYS*     1.3    57.9    +      -       -      +
    100A  ALA*     3.3     4.5    +      -       -      +
    101A  ILE*     2.9    31.4    +      -       +      +
    145A  MET*     3.7    35.7    -      -       -      +
    148A  HIS*     4.0    22.9    -      -       +      -
    149A  LEU*     4.1    17.7    -      -       +      +
    152A  ILE*     4.0    17.3    -      -       +      -
    167A  PHE*     4.8     4.9    -      -       +      -
    172A  LEU*     5.4     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  PRO*     3.0    29.6    +      -       -      +
     95A  ASP*     3.6    13.4    +      -       -      +
     96A  ALA      3.3     0.2    -      -       -      -
     97A  MET*     1.3    73.7    -      -       -      +
     99A  ALA*     1.3    65.0    +      -       -      +
    101A  ILE*     3.2     7.2    +      -       -      +
    102A  VAL*     3.0    30.0    +      -       +      +
    149A  LEU*     3.8    21.5    -      -       +      +
    153A  GLN*     3.7    26.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  LEU*     5.5     3.1    -      -       +      -
     87A  GLN*     4.8     7.0    -      -       -      +
     90A  TRP*     4.2    30.1    -      -       +      -
     95A  ASP      3.1    14.0    +      -       -      +
     96A  ALA      3.3     7.4    +      -       -      +
     98A  LYS*     1.3    75.1    -      -       -      +
    100A  ALA*     1.3    58.3    +      -       -      +
    102A  VAL*     3.4     9.1    +      -       -      +
    103A  LEU*     2.9    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  TYR*     3.7    10.9    +      -       +      +
     34A  LEU*     5.0     2.8    -      -       +      +
     52A  PHE*     3.8    20.0    -      -       +      -
     96A  ALA      2.9    16.6    +      -       -      +
     97A  MET*     3.5     8.7    -      -       -      +
     98A  LYS      3.2     0.2    -      -       -      -
     99A  ALA*     1.3    77.4    -      -       -      +
    101A  ILE*     1.3    57.7    +      -       -      +
    103A  LEU*     3.3     5.9    +      -       -      +
    104A  GLU*     2.9    32.9    +      -       -      +
    145A  MET*     3.6    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  MET      2.9    19.1    +      -       -      +
     98A  LYS*     3.2     7.4    +      -       -      +
    100A  ALA*     1.3    75.5    -      -       -      +
    102A  VAL*     1.3    60.3    -      -       +      +
    104A  GLU*     3.3     3.1    +      -       -      +
    105A  LYS*     2.9    56.0    +      -       +      +
    142A  ILE*     5.0    11.0    -      -       +      +
    145A  MET*     3.5    48.5    -      -       +      +
    146A  GLY*     3.9     6.7    -      -       -      +
    149A  LEU*     3.8    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LYS*     3.0    20.8    +      -       +      +
     99A  ALA*     3.6     9.9    -      -       -      +
    101A  ILE*     1.3    79.2    -      -       +      +
    103A  LEU*     1.3    63.4    +      -       -      +
    105A  LYS*     3.5     8.0    +      -       +      +
    106A  SER*     3.0    23.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  LEU      5.6     0.4    -      -       -      +
     26A  ARG*     5.6     0.7    -      -       +      -
     27A  ALA*     4.1    25.6    -      -       +      +
     30A  THR*     3.8    34.3    -      -       +      +
     31A  TYR*     3.7    32.8    -      -       +      +
     34A  LEU*     5.5     0.7    -      -       +      -
     99A  ALA      2.9    14.4    +      -       -      +
    100A  ALA*     3.5     9.2    -      -       -      +
    102A  VAL*     1.3    78.0    -      -       -      +
    104A  GLU*     1.3    63.6    +      -       -      +
    106A  SER*     2.6    29.3    +      -       -      +
    107A  LEU*     3.1    12.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  TYR*     2.6    25.1    +      -       -      +
     59A  LYS*     2.7    38.2    +      -       -      -
    100A  ALA      2.9    23.5    +      -       -      +
    101A  ILE      3.9     2.5    -      -       -      +
    103A  LEU*     1.3    70.8    -      -       -      +
    105A  LYS*     1.3    60.4    +      -       -      +
    107A  LEU*     3.2     7.5    +      -       -      +
    108A  ASN*     2.8    30.0    +      -       -      +
    138A  GLU*     2.6    30.6    -      -       -      +
    141A  LEU*     3.5    12.8    -      -       +      +
    142A  ILE*     3.7    21.8    -      -       +      -
    145A  MET*     3.7    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  ILE*     2.9    41.3    +      -       +      +
    102A  VAL*     3.9     7.2    -      -       +      +
    104A  GLU*     1.3    75.7    -      -       -      +
    106A  SER*     1.3    57.4    +      -       -      +
    108A  ASN*     3.7     7.1    -      -       -      +
    109A  GLN*     2.8    30.3    +      -       -      +
    142A  ILE*     4.3    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  LEU*     5.2     1.7    -      -       -      +
    102A  VAL*     3.0    14.7    +      -       -      -
    103A  LEU*     2.6    31.2    +      -       -      +
    105A  LYS*     1.3    74.5    -      -       -      +
    107A  LEU*     1.3    66.1    +      -       -      +
    109A  GLN*     3.5     6.2    +      -       -      +
    110A  ALA*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  LEU*     4.8     0.7    -      -       +      +
     23A  LEU*     3.6    44.2    -      -       +      +
     24A  TYR*     4.1    23.6    -      -       +      -
     27A  ALA*     3.8    13.9    -      -       +      -
     59A  LYS*     3.7    40.4    -      -       +      +
    103A  LEU*     3.1    13.6    +      -       +      +
    104A  GLU*     3.2    14.8    +      -       -      +
    106A  SER*     1.3    82.0    +      -       -      +
    108A  ASN*     1.3    61.4    +      -       -      +
    110A  ALA*     3.2     7.1    +      -       -      +
    111A  LEU*     2.9    33.2    +      -       -      +
    138A  GLU*     4.4     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  GLU      2.8    18.3    +      -       -      +
    105A  LYS*     3.7     5.8    -      -       -      +
    107A  LEU*     1.3    75.8    -      -       -      +
    109A  GLN*     1.3    57.3    +      -       -      +
    111A  LEU*     3.1    15.5    +      -       -      +
    112A  LEU*     2.9    47.8    +      -       -      +
    135A  LEU*     4.4    12.6    -      -       -      +
    138A  GLU*     3.5    24.5    +      -       +      +
    139A  VAL*     5.0    10.8    -      -       -      +
    142A  ILE*     4.1    17.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  LYS      2.8    18.4    +      -       -      +
    106A  SER*     3.8     6.3    -      -       -      +
    108A  ASN*     1.3    76.0    -      -       -      +
    110A  ALA*     1.3    58.7    +      -       -      +
    112A  LEU*     3.2    22.6    +      -       -      +
    113A  ASP*     2.9    63.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  LEU*     3.9    12.7    -      -       +      +
     23A  LEU*     3.6    29.8    -      -       +      -
    106A  SER      3.0    14.6    +      -       -      +
    107A  LEU      3.2     9.6    +      -       -      +
    109A  GLN*     1.3    77.6    -      -       -      +
    111A  LEU*     1.3    56.1    +      -       -      +
    113A  ASP*     3.3     9.8    +      -       -      +
    114A  LEU*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  LEU*     3.7    25.4    -      -       +      -
     24A  TYR*     3.4    25.1    -      -       +      +
    107A  LEU      2.9    16.7    +      -       -      +
    108A  ASN*     3.1     8.5    +      -       -      +
    110A  ALA*     1.3    75.0    -      -       -      +
    112A  LEU*     1.3    58.4    +      -       -      +
    114A  LEU*     3.3     6.1    +      -       -      +
    115A  HIS*     2.9    28.6    +      -       -      +
    130A  LEU*     3.9    15.8    -      -       +      +
    134A  PHE*     3.6    34.3    -      -       +      +
    135A  LEU*     3.8    19.9    -      -       +      +
    138A  GLU*     3.6    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  ASN*     2.9    37.0    +      -       -      +
    109A  GLN*     3.6    29.2    -      -       -      +
    111A  LEU*     1.3    72.1    -      -       -      +
    113A  ASP*     1.3    61.4    +      -       -      +
    115A  HIS*     3.3     8.0    +      -       +      +
    116A  ALA*     2.9    29.6    +      -       -      +
    135A  LEU*     4.1    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  GLN*     2.9    48.2    +      -       -      +
    110A  ALA*     3.6     8.6    -      -       -      +
    112A  LEU*     1.3    77.6    -      -       -      +
    114A  LEU*     1.3    56.7    +      -       -      +
    116A  ALA*     3.3     7.9    +      -       -      +
    117A  LEU*     3.0    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  VAL*     4.5     6.5    -      -       +      +
     16A  ALA*     3.6    30.5    -      -       +      +
     17A  VAL*     4.2    21.8    -      -       +      -
     20A  LEU*     3.7    28.7    -      -       +      -
     66A  LEU*     5.1     1.3    -      -       +      -
    110A  ALA      3.0    17.4    +      -       -      +
    111A  LEU*     3.7     5.4    -      -       -      +
    113A  ASP*     1.3    75.1    -      -       -      +
    115A  HIS*     1.3    60.6    +      -       -      +
    117A  LEU*     3.2    12.3    +      -       +      +
    118A  GLY*     2.9    26.3    +      -       -      -
    126A  LEU*     3.8    19.7    -      -       +      +
    130A  LEU*     3.8    21.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LEU      2.9    17.6    +      -       -      +
    112A  LEU*     3.3    11.4    +      -       +      +
    114A  LEU*     1.3    77.3    -      -       -      +
    116A  ALA*     1.3    57.1    +      -       -      +
    118A  GLY      3.3     0.2    +      -       -      -
    119A  SER*     2.8    33.8    +      -       -      -
    126A  LEU*     5.5     0.2    -      -       -      -
    127A  CYS*     3.5    41.4    -      -       +      +
    130A  LEU*     3.6    12.9    -      -       +      +
    131A  GLU*     2.6    36.8    +      -       +      +
    135A  LEU*     4.3    14.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  LEU      2.9    16.7    +      -       -      +
    113A  ASP*     3.6     8.5    -      -       -      +
    114A  LEU      3.2     0.2    -      -       -      -
    115A  HIS*     1.3    77.1    +      -       -      +
    117A  LEU*     1.3    57.9    +      -       -      +
    119A  SER*     3.3     7.7    +      -       -      -
    120A  ALA*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  GLU*     3.7    37.7    -      -       +      +
     13A  VAL*     3.9    15.3    -      -       +      -
     16A  ALA*     4.0    14.8    -      -       +      -
     19A  ARG*     5.5     2.5    -      -       -      +
    113A  ASP      3.0    12.5    +      -       -      +
    114A  LEU*     3.2    11.0    +      -       +      +
    116A  ALA*     1.3    74.2    -      -       -      +
    118A  GLY*     1.3    66.0    +      -       -      +
    120A  ALA*     3.2     8.1    +      -       +      +
    121A  GLN*     3.0    51.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  VAL*     4.4     4.3    -      -       -      -
    114A  LEU      2.9    14.6    +      -       -      -
    115A  HIS      3.7     2.2    -      -       -      -
    117A  LEU*     1.3    75.8    -      -       -      +
    119A  SER*     1.3    60.8    +      -       -      +
    121A  GLN*     3.3     1.3    +      -       -      -
    122A  ALA      3.0     4.2    +      -       -      -
    123A  ASP*     2.8    34.4    +      -       -      -
    126A  LEU*     3.8    20.8    -      -       -      +
    127A  CYS*     3.7    10.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  HIS*     2.8    25.3    +      -       -      -
    116A  ALA*     3.7     8.1    -      -       -      -
    118A  GLY*     1.3    77.3    -      -       -      +
    120A  ALA*     1.3    61.7    +      -       -      +
    122A  ALA*     3.1    14.9    +      -       -      +
    123A  ASP      5.0     0.2    -      -       -      +
    127A  CYS*     3.5    11.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  ALA      3.0    16.6    +      -       -      +
    117A  LEU*     3.6     9.9    -      -       +      +
    119A  SER*     1.3    76.2    -      -       -      +
    121A  GLN*     1.3    61.4    +      -       +      +
    122A  ALA*     3.3     1.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  ASN*     4.2     8.3    -      -       -      +
     10A  SER*     3.4    28.2    -      -       -      +
     12A  GLU*     3.2    35.5    +      -       -      +
     13A  VAL*     4.9     1.3    -      -       +      -
    117A  LEU*     3.0    35.5    +      -       +      +
    118A  GLY*     4.0     4.9    -      -       -      +
    119A  SER      3.2     0.2    -      -       -      -
    120A  ALA*     1.3    78.5    -      -       +      +
    122A  ALA*     1.3    70.5    -      -       -      +
    123A  ASP*     3.3     7.3    -      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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