Contacts of the helix formed by residues 85 - 96 (chain Z) in PDB entry 6QXT


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 HIS 85 (chain Z).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209Y  PHE      5.1     6.6    -      -       -      +
    211Y  GLN*     5.8     7.3    -      -       -      +
     84Z  ARG*     1.3    73.9    -      -       -      +
     86Z  ASP*     1.3    60.0    +      -       -      +
     87Z  SER      3.1     2.0    +      -       -      -
     88Z  SER*     3.7    13.6    +      -       -      -
     89Z  LEU*     4.2     5.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 86 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84Z  ARG*     3.1     9.2    -      -       +      +
     85Z  HIS*     1.3    76.1    -      -       -      +
     87Z  SER*     1.3    57.8    +      -       -      +
     88Z  SER      3.4     0.2    -      -       -      -
     89Z  LEU*     3.5    10.9    +      -       +      +
     90Z  GLN*     2.9    29.6    +      -       +      +
    195Z  CYS      5.1     5.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 87 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200Y  GLN*     5.4     1.6    -      -       -      -
     81Z  TYR      5.7     2.2    -      -       -      -
     82Z  TYR*     5.7     3.6    -      -       -      -
     83Z  ALA      5.5     4.0    -      -       -      -
     84Z  ARG*     3.2    18.3    +      -       -      +
     85Z  HIS      3.1     1.2    -      -       -      -
     86Z  ASP*     1.3    75.1    -      -       -      +
     88Z  SER*     1.3    61.2    +      -       -      +
     90Z  GLN*     2.9     5.3    +      -       -      +
     91Z  ILE*     2.9    29.3    +      -       -      +
    195Z  CYS      5.0     0.4    +      -       -      -
    196Z  GLY*     3.6    38.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 88 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200Y  GLN*     3.8    33.7    -      -       -      +
    208Y  GLN*     4.1    26.8    -      -       -      +
    209Y  PHE      4.8     3.1    -      -       -      -
    210Y  ASN      4.4     1.3    -      -       -      -
    211Y  GLN*     4.2    21.5    -      -       -      -
     85Z  HIS      3.7     9.6    +      -       -      -
     86Z  ASP      3.4     0.2    -      -       -      -
     87Z  SER*     1.3    78.9    -      -       -      +
     89Z  LEU*     1.3    59.4    +      -       -      +
     91Z  ILE*     3.7    12.2    +      -       -      +
     92Z  ALA*     4.2     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 89 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208Y  GLN*     5.0     7.8    +      -       +      +
     85Z  HIS      4.2     2.5    +      -       -      +
     86Z  ASP*     3.5    14.8    +      -       +      +
     87Z  SER      3.2     0.6    -      -       -      -
     88Z  SER*     1.3    77.9    -      -       -      +
     90Z  GLN*     1.3    61.7    +      -       -      +
     91Z  ILE      3.3     0.4    +      -       -      -
     92Z  ALA*     3.7    12.9    +      -       -      +
     93Z  ARG*     3.9     8.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 90 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86Z  ASP*     2.9    18.8    +      -       +      +
     87Z  SER*     2.9     8.5    +      -       -      +
     89Z  LEU*     1.3    74.9    -      -       -      +
     91Z  ILE*     1.3    60.8    +      -       -      +
     93Z  ARG*     3.2     9.8    +      -       +      +
     94Z  GLN*     2.9    28.6    +      -       -      +
    195Z  CYS      4.5    11.9    -      -       -      +
    197Z  CYS*     4.8    14.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 91 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200Y  GLN*     5.3     9.4    -      -       +      -
    201Y  ILE*     6.2     1.3    -      -       +      +
     87Z  SER      2.9    13.6    +      -       -      +
     88Z  SER*     3.9    10.5    -      -       -      +
     89Z  LEU      3.3     0.4    -      -       -      -
     90Z  GLN*     1.3    76.7    -      -       -      +
     92Z  ALA*     1.3    57.6    +      -       -      +
     94Z  GLN*     3.2     8.4    +      -       -      +
     95Z  ILE*     2.9    29.3    +      -       -      +
    196Z  GLY      5.4     3.1    +      -       -      +
    197Z  CYS*     5.8     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 92 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208Y  GLN*     5.8     7.9    -      -       +      -
     88Z  SER      4.2     4.5    +      -       -      +
     89Z  LEU*     3.7    10.6    +      -       -      +
     90Z  GLN      3.3     0.4    -      -       -      -
     91Z  ILE*     1.3    78.2    -      -       -      +
     93Z  ARG*     1.3    57.8    +      -       -      +
     95Z  ILE*     3.4     7.1    +      -       -      +
     96Z  ALA*     3.0    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 93 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89Z  LEU      3.9     4.1    +      -       -      +
     90Z  GLN*     3.2    16.8    +      -       +      +
     92Z  ALA*     1.3    77.8    -      -       -      +
     94Z  GLN*     1.3    59.9    +      -       -      +
     96Z  ALA*     3.0     9.2    +      -       -      +
     97Z  TRP*     3.0    26.7    +      -       -      +
    278Z  ASN*     5.2    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 94 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90Z  GLN      2.9    13.8    +      -       -      +
     91Z  ILE*     3.2    11.0    +      -       -      +
     93Z  ARG*     1.3    75.5    -      -       -      +
     95Z  ILE*     1.3    62.0    +      -       -      +
     97Z  TRP*     3.4    20.6    +      -       -      +
    197Z  CYS*     4.8    16.4    -      -       +      -
    198Z  MET*     5.0     9.6    -      -       +      +
    201Z  ILE*     6.3     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 95 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91Z  ILE      2.9    16.5    +      -       -      +
     92Z  ALA*     3.8     7.0    -      -       -      +
     94Z  GLN*     1.3    77.0    -      -       -      +
     96Z  ALA*     1.3    57.5    +      -       -      +
     97Z  TRP      3.3     4.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 96 (chain Z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92Z  ALA      3.0    17.3    +      -       -      +
     93Z  ARG*     3.0    10.7    +      -       -      +
     95Z  ILE*     1.3    75.2    -      -       -      +
     97Z  TRP*     1.3    64.8    +      -       -      +
     98Z  LYS*     3.8     1.7    +      -       -      +
----------------------------------------------------------
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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