Contacts of the helix formed by residues 138 - 155 (chain Q) in PDB entry 2X86


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASN 138 (chain Q).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81Q  THR*     3.7    34.4    +      -       -      +
     84Q  TRP*     3.5    20.0    -      -       +      -
    118Q  ALA*     5.0     5.7    -      -       -      +
    136Q  PRO*     4.0     0.3    -      -       -      +
    137Q  LEU*     1.3    81.4    -      -       -      +
    139Q  VAL*     1.3    59.8    -      -       -      +
    140Q  PHE*     3.4     9.4    +      -       -      +
    141Q  GLY*     2.7    35.9    +      -       -      -
    142Q  TYR*     2.9    22.0    +      -       -      +
    268Q  LEU*     6.2     1.0    -      -       -      +
    271Q  ARG*     3.9    20.5    +      -       +      +
    401Q  ADP      5.3     1.4    +      -       -      -
     39R  PHE*     3.2    15.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 139 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83Q  GLU      3.4    24.2    -      -       -      +
     84Q  TRP*     3.6    23.5    -      -       +      -
     86Q  GLY*     4.1    10.8    -      -       -      -
     89Q  MET*     3.8    14.9    -      -       +      +
     90Q  MET*     5.0     3.4    -      -       -      -
    138Q  ASN*     1.3    71.3    -      -       +      +
    140Q  PHE*     1.3    68.9    +      -       -      +
    142Q  TYR*     3.2     7.8    +      -       +      -
    143Q  SER*     2.9    23.0    +      -       -      -
     33R  LEU*     4.1    24.0    -      -       +      -
     36R  GLY*     3.7    24.7    -      -       -      +
     39R  PHE*     3.7     8.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 140 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78Q  CYS      3.4    26.9    -      -       -      -
     79Q  SER*     3.9     5.8    -      -       -      -
     80Q  SER      3.7    22.2    -      -       -      +
     81Q  THR*     3.8    20.4    -      -       +      -
     83Q  GLU      4.9     0.4    +      -       -      -
     89Q  MET*     3.9    10.1    -      -       +      -
     93Q  ASN*     4.0     5.4    -      -       -      -
    116Q  SER*     3.9    12.8    -      -       -      -
    118Q  ALA*     4.1     6.1    -      -       +      -
    138Q  ASN*     3.2     8.6    -      -       -      +
    139Q  VAL*     1.3    81.6    -      -       -      +
    141Q  GLY*     1.3    65.4    +      -       -      +
    143Q  SER*     2.6    25.1    +      -       -      -
    144Q  LYS*     3.2    28.6    +      -       +      +
    400Q  NAP      2.9    28.7    -      -       -      -
    402Q  BMA      3.6    29.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 141 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118Q  ALA*     4.4    14.1    -      -       -      -
    119Q  THR*     3.9     2.4    -      -       -      +
    136Q  PRO*     3.4    17.2    -      -       -      +
    138Q  ASN*     2.7    21.7    +      -       -      -
    140Q  PHE*     1.3    82.5    -      -       -      +
    142Q  TYR*     1.3    56.8    +      -       -      +
    144Q  LYS*     3.2     6.3    +      -       -      +
    145Q  PHE*     2.8    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 142 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90Q  MET*     4.1    30.5    -      -       +      -
    136Q  PRO*     3.6     9.1    -      -       +      +
    138Q  ASN      2.9     6.6    +      -       -      +
    139Q  VAL*     3.5     9.9    -      -       -      +
    140Q  PHE      3.2     0.2    -      -       -      -
    141Q  GLY*     1.3    78.0    -      -       -      +
    143Q  SER*     1.3    57.4    +      -       -      +
    145Q  PHE*     3.2    26.0    +      +       -      +
    146Q  LEU*     2.9    44.9    +      -       +      +
     33R  LEU*     4.8     7.4    -      -       +      -
     39R  PHE*     3.8    37.9    -      +       +      -
     42R  LEU*     3.5    28.8    +      -       +      +
     43R  VAL*     4.2    19.7    -      -       -      -
     47R  ILE*     3.4    28.8    -      -       -      +
     50R  TYR*     5.7     2.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with SER 143 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89Q  MET*     3.6    16.3    -      -       -      +
     90Q  MET*     3.9    22.0    -      -       -      -
     93Q  ASN*     3.2    33.9    +      -       -      +
     94Q  TYR*     4.1    12.4    +      -       -      +
    139Q  VAL      2.9    12.2    +      -       -      -
    140Q  PHE      2.6    19.6    +      -       -      -
    142Q  TYR*     1.3    77.9    -      -       -      +
    144Q  LYS*     1.3    61.3    +      -       -      +
    147Q  PHE*     3.5    19.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 144 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74Q  HIS      5.9     0.4    +      -       -      -
     76Q  GLY      5.0     1.0    +      -       -      -
     77Q  ALA*     3.6    15.0    -      -       -      +
     93Q  ASN*     4.6     8.0    -      -       +      +
     97Q  SER*     5.6     3.8    +      -       -      -
    113Q  TYR*     6.4     0.2    -      -       +      -
    114Q  ALA*     3.0    26.0    +      -       -      +
    115Q  SER*     4.1    11.0    -      -       -      +
    116Q  SER*     4.2    10.5    -      -       -      +
    119Q  THR*     3.9    14.8    -      -       +      -
    140Q  PHE*     3.2    30.9    +      -       +      +
    141Q  GLY      3.2     7.3    +      -       -      +
    142Q  TYR      3.1     0.2    -      -       -      -
    143Q  SER*     1.3    82.5    +      -       -      +
    145Q  PHE*     1.3    66.5    +      -       -      +
    147Q  PHE*     3.1     7.8    +      -       +      +
    148Q  ASP*     3.0    25.3    +      -       -      +
    400Q  NAP      2.6    42.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 145 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119Q  THR*     3.5    12.9    -      -       +      +
    131Q  ARG*     3.5    43.3    -      -       +      -
    134Q  GLU*     3.2    40.4    -      -       +      -
    136Q  PRO*     3.9    17.9    -      -       +      -
    141Q  GLY      2.8    17.6    +      -       -      +
    142Q  TYR*     3.5    28.0    -      +       -      +
    144Q  LYS*     1.3    77.6    -      -       -      +
    146Q  LEU*     1.3    73.3    +      -       +      +
    148Q  ASP*     3.0     9.4    +      -       -      +
    149Q  GLU*     3.0    45.6    +      -       +      +
    152Q  ARG*     4.9     0.4    -      -       -      -
    166Q  ARG*     5.6     0.7    -      -       -      -
     42R  LEU      5.7     0.2    -      -       -      -
     43R  VAL      4.6     4.9    -      -       -      -
     45R  LEU      4.9     3.8    -      -       -      -
     46R  ASN*     5.4     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 146 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90Q  MET*     3.7    13.2    -      -       +      -
     94Q  TYR*     3.5    30.5    -      -       +      +
    142Q  TYR*     2.9    44.1    +      -       +      +
    143Q  SER      4.5     0.7    -      -       -      +
    145Q  PHE*     1.3    88.6    -      -       +      +
    147Q  PHE*     1.3    58.2    +      -       -      +
    149Q  GLU*     3.3    10.8    +      -       +      +
    150Q  TYR*     2.9    22.7    +      -       -      +
     47R  ILE*     4.0    24.5    -      -       +      +
     48R  ALA      5.6     1.3    -      -       -      +
     49R  ASP*     4.6     2.5    -      -       -      +
     50R  TYR*     3.6    33.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 147 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94Q  TYR*     3.6    18.3    -      +       +      -
     97Q  SER*     3.6    35.9    -      -       -      -
     98Q  LYS*     3.5    32.8    -      -       +      -
    101Q  LEU*     4.0    17.5    -      -       +      -
    111Q  PHE*     4.0     7.6    -      +       -      -
    113Q  TYR*     3.7    39.0    -      +       -      -
    114Q  ALA      5.8     0.2    -      -       -      -
    143Q  SER      3.5    12.6    +      -       -      +
    144Q  LYS*     3.1    11.0    +      -       +      +
    146Q  LEU*     1.3    77.6    -      -       -      +
    148Q  ASP*     1.3    60.3    +      -       -      +
    150Q  TYR*     2.9     9.7    +      +       +      +
    151Q  VAL*     2.8    47.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 148 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113Q  TYR*     2.7    41.5    +      -       -      -
    115Q  SER*     2.6    28.4    +      -       -      -
    119Q  THR*     4.2     3.6    -      -       -      +
    134Q  GLU*     5.5     0.2    -      -       -      +
    144Q  LYS      3.0    15.5    +      -       -      +
    145Q  PHE*     3.0     7.2    +      -       -      +
    147Q  PHE*     1.3    75.2    -      -       -      +
    149Q  GLU*     1.3    57.7    +      -       -      +
    151Q  VAL*     3.2     2.8    +      -       -      +
    152Q  ARG*     2.8    40.2    +      -       -      +
    166Q  ARG*     2.8    26.6    +      -       -      +
    232Q  ILE*     3.8    14.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 149 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131Q  ARG*     3.7    24.9    -      -       -      +
    145Q  PHE*     3.0    38.8    +      -       +      +
    146Q  LEU*     3.4    17.7    -      -       +      +
    147Q  PHE      3.1     0.2    -      -       -      -
    148Q  ASP*     1.3    76.6    -      -       -      +
    150Q  TYR*     1.3    62.7    +      -       -      +
    152Q  ARG*     2.9    40.9    +      -       -      +
    153Q  GLN*     3.2    32.5    +      -       -      +
     46R  ASN*     4.6     6.4    -      -       -      +
     47R  ILE      5.1     8.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 150 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94Q  TYR*     3.7    19.7    -      -       +      +
     98Q  LYS*     3.6    32.3    +      -       +      +
    101Q  LEU*     4.0    23.1    -      -       +      -
    102Q  HIS*     2.6    37.7    +      +       -      -
    146Q  LEU      2.9    13.9    +      -       -      +
    147Q  PHE*     3.2    14.6    -      +       +      +
    149Q  GLU*     1.3    75.7    -      -       -      +
    151Q  VAL*     1.3    66.3    +      -       -      +
    153Q  GLN*     3.1    29.0    +      -       +      +
    154Q  ILE*     3.2    27.0    +      -       +      +
     48R  ALA      4.2    12.1    -      -       -      +
     49R  ASP*     4.4    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 151 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101Q  LEU*     4.3     8.7    -      -       +      -
    113Q  TYR*     3.5    28.7    -      -       +      +
    147Q  PHE*     2.8    44.4    +      -       +      +
    148Q  ASP      3.5     7.0    -      -       -      +
    150Q  TYR*     1.3    72.7    -      -       -      +
    152Q  ARG*     1.3    57.9    +      -       -      +
    154Q  ILE*     2.9    10.0    +      -       -      +
    155Q  LEU*     2.8    45.1    +      -       +      +
    162Q  ILE*     3.7    25.4    -      -       +      -
    231Q  GLY      5.8     0.7    -      -       -      +
    232Q  ILE*     4.4     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 152 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129Q  GLU*     3.5    24.4    +      -       -      +
    130Q  SER*     3.8     2.0    -      -       -      +
    131Q  ARG*     3.9     9.8    -      -       -      +
    134Q  GLU*     2.5    44.9    +      -       -      -
    145Q  PHE*     4.6     0.6    -      -       -      -
    148Q  ASP*     2.8    21.8    +      -       -      +
    149Q  GLU*     2.9    33.5    +      -       -      +
    150Q  TYR      3.2     0.4    -      -       -      -
    151Q  VAL*     1.3    77.1    -      -       -      +
    153Q  GLN*     1.3    60.5    +      -       +      +
    155Q  LEU*     4.1    12.0    -      -       +      +
    156Q  PRO*     3.4    19.8    -      -       -      +
    166Q  ARG*     3.9     7.1    -      -       -      +
    232Q  ILE*     3.9    27.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 153 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149Q  GLU*     3.2    22.9    +      -       -      +
    150Q  TYR*     3.1    24.7    +      -       +      +
    152Q  ARG*     1.3    77.5    -      -       -      +
    154Q  ILE*     1.3    64.8    +      -       +      +
    156Q  PRO*     3.7     8.5    -      -       -      +
    157Q  GLU*     5.3     2.6    +      -       -      +
     47R  ILE      4.7     3.2    +      -       -      -
     48R  ALA*     3.0    44.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 154 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101Q  LEU*     4.3     7.0    -      -       +      -
    102Q  HIS*     4.5    15.5    -      -       +      -
    105Q  LEU*     3.5    27.4    -      -       +      -
    150Q  TYR*     3.5    37.5    -      -       +      +
    151Q  VAL*     2.9    10.0    +      -       -      +
    153Q  GLN*     1.3    82.7    -      -       +      +
    155Q  LEU*     1.3    66.1    +      -       -      +
    156Q  PRO      3.4     0.2    -      -       -      -
    157Q  GLU*     3.0    18.4    +      -       +      +
    158Q  ALA*     3.2    10.7    +      -       +      -
    162Q  ILE*     3.9    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 155 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151Q  VAL*     2.8    32.3    +      -       +      +
    152Q  ARG*     4.1    15.3    -      -       +      +
    154Q  ILE*     1.3    76.6    -      -       -      +
    156Q  PRO*     1.4    70.3    -      -       +      +
    157Q  GLU      3.0     1.2    +      -       -      -
    158Q  ALA*     3.2    20.8    +      -       +      +
    162Q  ILE*     4.0    30.3    -      -       +      +
    230Q  SER*     4.1    21.8    -      -       -      -
    231Q  GLY*     4.2    19.1    -      -       -      -
    232Q  ILE*     5.1     2.7    -      -       +      +
----------------------------------------------------------
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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