Contacts of the helix formed by residues 390 - 400 (chain l) in PDB entry 6QX2


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 390 (chain l).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386l  ILE*     2.9    44.3    +      -       +      +
    387l  ALA      3.4     3.8    -      -       -      -
    388l  LEU      3.3     0.2    -      -       -      -
    389l  ASP*     1.3    91.6    +      -       +      +
    391l  ILE*     1.3    62.9    +      -       -      +
    392l  ASP*     3.3     3.1    -      -       -      -
    393l  GLU*     3.1    28.8    +      -       -      +
    394l  ILE*     3.1    19.2    +      -       +      +
    415l  PHE*     4.1    20.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with ILE 391 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395j  ILE*     4.8     3.8    -      -       +      -
    399j  ARG*     3.3    45.1    -      -       -      +
    430j  LEU*     4.8     7.4    -      -       +      -
    387l  ALA      3.0    17.9    +      -       -      +
    388l  LEU*     3.6    13.4    +      -       -      +
    389l  ASP      3.7     0.6    -      -       -      -
    390l  HIS*     1.3    75.7    -      -       -      +
    392l  ASP*     1.3    63.7    +      -       -      +
    394l  ILE*     3.3    11.5    +      -       +      -
    395l  ILE*     3.0    49.7    +      -       +      +
    428l  MET*     4.9     2.5    -      -       +      -
    433l  LEU*     3.5    39.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 392 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395j  ILE*     5.6     4.8    -      -       -      +
    399j  ARG*     2.9    29.9    +      -       -      -
    390l  HIS      3.3     0.6    -      -       -      -
    391l  ILE*     1.3    81.9    -      -       -      +
    393l  GLU*     1.3    63.3    +      -       +      +
    395l  ILE*     3.6     7.7    +      -       -      +
    396l  SER*     3.1    26.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 393 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390l  HIS*     3.1    33.7    +      -       -      +
    392l  ASP*     1.3    77.7    -      -       +      +
    394l  ILE*     1.3    59.1    +      -       -      +
    396l  SER*     3.3     7.8    +      -       -      -
    397l  THR*     2.8    33.0    +      -       -      +
    415l  PHE*     3.9    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 394 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    430j  LEU*     4.7     2.2    -      -       +      -
    386l  ILE*     5.0     0.7    -      -       +      +
    387l  ALA*     3.6    32.8    -      -       +      +
    390l  HIS*     3.1    16.2    +      -       +      +
    391l  ILE*     3.3    18.1    +      -       +      +
    393l  GLU*     1.3    75.1    -      -       -      +
    395l  ILE*     1.3    62.6    -      -       -      +
    397l  THR*     3.4     8.4    -      -       -      -
    398l  ILE*     3.1    41.4    +      -       +      +
    411l  LEU*     3.9    11.9    -      -       +      -
    415l  PHE*     3.8    35.2    -      -       +      -
    417l  LEU*     5.0     6.1    -      -       +      -
    425l  ILE*     4.0    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 395 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    391j  ILE*     5.1     4.0    -      -       +      -
    392j  ASP*     6.0     2.9    -      -       +      -
    395j  ILE*     4.1    33.2    -      -       +      -
    430j  LEU*     3.9    29.2    -      -       +      -
    433j  LEU*     4.2    13.5    -      -       +      -
    391l  ILE*     3.0    34.4    +      -       +      +
    392l  ASP*     3.8     7.6    -      -       -      +
    393l  GLU      3.3     0.2    -      -       -      -
    394l  ILE*     1.3    74.8    -      -       -      +
    396l  SER*     1.3    52.0    +      -       -      +
    398l  ILE*     3.1     8.9    +      -       +      +
    399l  ARG*     2.8    59.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 396 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392l  ASP      3.1    13.9    +      -       -      -
    393l  GLU*     3.3     8.9    +      -       -      -
    395l  ILE*     1.3    76.9    -      -       -      +
    397l  THR*     1.3    56.2    +      -       -      +
    399l  ARG*     3.1    12.3    +      -       -      +
    400l  GLU*     2.9    41.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 397 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    393l  GLU*     2.8    22.1    +      -       -      +
    394l  ILE      3.4     8.7    -      -       -      -
    396l  SER*     1.3    74.1    -      -       -      +
    398l  ILE*     1.3    54.5    +      -       -      +
    400l  GLU*     3.5    17.8    -      -       -      +
    401l  SER*     2.6    32.4    +      -       -      -
    407l  ALA      4.8     0.4    -      -       -      +
    410l  SER*     3.6    33.8    -      -       -      +
    411l  LEU*     3.9    22.4    -      -       +      -
    414l  ARG*     4.9     5.8    -      -       +      +
    415l  PHE*     3.8    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 398 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    430j  LEU*     3.7    42.0    -      -       +      +
    433j  LEU*     3.9    21.1    -      -       +      +
    434j  THR*     3.9     8.7    -      -       +      +
    394l  ILE*     3.1    39.2    +      -       +      +
    395l  ILE*     3.5     9.2    -      -       +      +
    397l  THR*     1.3    73.6    -      -       -      +
    399l  ARG*     1.3    64.5    +      -       -      +
    401l  SER*     3.3    24.7    +      -       -      +
    407l  ALA*     4.5     2.9    -      -       +      -
    411l  LEU*     4.1    15.5    -      -       +      -
    425l  ILE*     4.8     1.1    -      -       +      -
    426l  LEU*     4.0    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 399 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388j  LEU      5.3     1.6    +      -       -      -
    391j  ILE*     3.5    34.3    -      -       -      +
    392j  ASP*     4.8    14.4    -      -       -      +
    433j  LEU*     3.8    25.4    -      -       +      +
    435j  GLY*     4.9     4.3    +      -       -      -
    395l  ILE*     2.8    32.4    +      -       +      +
    396l  SER*     3.1    11.4    +      -       -      +
    398l  ILE*     1.3    73.4    -      -       -      +
    400l  GLU*     1.3    59.9    +      -       -      +
    401l  SER      3.1    13.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 400 (chain l). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    396l  SER*     2.9    21.3    +      -       -      +
    397l  THR*     3.5    25.2    +      -       -      +
    399l  ARG*     1.3    74.9    -      -       -      +
    401l  SER*     1.3    61.2    +      -       -      +
    402l  ASP*     3.5    12.5    -      -       -      +
    406l  VAL*     5.6     0.3    -      -       -      +
    410l  SER*     5.6     3.2    -      -       -      +
----------------------------------------------------------
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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