Contacts of the helix formed by residues 566 - 576 (chain B) in PDB entry 6IEH


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 566 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233B  ARG*     5.2     1.9    +      -       -      -
    264B  VAL*     5.1     5.2    -      -       +      -
    564B  HIS*     3.7    29.1    +      -       +      +
    565B  LEU*     1.3    79.9    -      -       -      +
    567B  TYR*     1.3    61.3    +      -       -      +
    568B  ASN*     3.4     8.1    +      -       -      +
    569B  MET*     2.9    31.9    +      -       +      +
    570B  VAL*     2.9    23.6    +      -       -      +
    854B  ARG*     4.4     5.4    -      -       -      +
    885B  GLU*     5.4     2.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 567 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    566B  THR*     1.3    72.8    -      -       -      +
    568B  ASN*     1.3    58.5    +      -       -      +
    570B  VAL*     3.6     4.6    -      -       +      +
    571B  LEU*     2.7    36.7    +      -       +      +
    854B  ARG*     3.6    59.7    +      -       +      +
    857B  VAL*     3.9    22.4    -      -       +      +
    858B  LEU*     3.8    24.5    -      -       +      -
    884B  ASP*     5.4     1.3    -      -       -      -
    885B  GLU*     3.6    26.2    +      -       +      +
    886B  LEU*     3.8    34.6    -      -       +      +
    946B  SER*     4.6     3.3    +      -       -      -
    951B  LEU*     4.2     7.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 568 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233B  ARG*     1.8    42.0    +      -       -      +
    566B  THR*     3.2     6.0    +      -       -      +
    567B  TYR*     1.3    75.8    -      -       -      +
    569B  MET*     1.3    65.3    +      -       -      +
    571B  LEU*     4.4     4.5    -      -       -      +
    572B  ASN*     3.1    30.6    +      -       -      +
    877B  ALA      4.1     0.6    +      -       -      -
    878B  CYS*     2.7    36.0    +      -       -      +
    880B  ILE      3.9     7.2    +      -       -      +
    881B  SER*     4.1    14.1    +      -       -      +
    885B  GLU*     3.2    23.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 569 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233B  ARG*     3.9     6.5    -      -       -      +
    237B  TYR*     4.2     2.4    +      -       -      +
    264B  VAL*     4.4     4.0    -      -       +      -
    268B  GLU*     3.3    34.3    -      -       -      +
    563B  PHE*     4.0    15.3    -      -       +      -
    564B  HIS      3.8    20.9    -      -       -      +
    565B  LEU*     3.6    25.8    -      -       +      -
    566B  THR*     2.9    23.8    +      -       +      +
    568B  ASN*     1.3    76.8    +      -       -      +
    570B  VAL*     1.3    67.1    +      -       +      +
    572B  ASN*     4.1     0.5    -      -       -      +
    573B  LEU*     3.1    40.1    +      -       +      +
    581B  PRO*     5.0     3.1    -      -       +      +
    584B  MET*     3.8    24.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 570 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    565B  LEU*     4.6     8.7    -      -       +      -
    566B  THR      2.9    16.2    +      -       -      +
    567B  TYR*     3.6     8.7    -      -       +      +
    569B  MET*     1.3    76.6    -      -       +      +
    571B  LEU*     1.3    66.5    +      -       -      +
    573B  LEU*     3.5     0.6    +      -       -      -
    574B  LEU*     3.1    24.5    +      -       +      +
    581B  PRO*     3.9    23.5    -      -       +      +
    851B  LEU*     4.0    24.7    -      -       +      -
    854B  ARG*     4.5    16.8    -      -       +      -
    855B  LYS*     4.9     5.6    -      -       +      -
    858B  LEU*     3.9    25.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 571 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    567B  TYR*     2.7    26.0    +      -       +      +
    568B  ASN*     4.3     4.0    -      -       -      +
    570B  VAL*     1.3    75.4    -      -       -      +
    572B  ASN*     1.3    65.2    +      -       -      +
    574B  LEU*     3.1     9.6    +      -       +      +
    575B  ARG*     3.0    21.0    +      -       -      +
    858B  LEU*     3.7    39.7    -      -       +      -
    863B  PHE*     4.6     6.1    -      -       +      -
    864B  ALA*     5.0     1.3    -      -       +      -
    870B  ILE*     3.9    20.2    -      -       +      +
    874B  GLY*     3.4    30.3    -      -       -      +
    877B  ALA*     3.7    20.0    -      -       +      +
    878B  CYS*     4.0    11.7    -      -       -      -
    885B  GLU*     5.7     1.3    -      -       +      -
    886B  LEU*     5.6     1.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 572 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233B  ARG*     4.6     0.2    -      -       -      +
    237B  TYR*     3.7    33.1    -      -       +      +
    568B  ASN*     3.1    41.3    +      -       -      +
    571B  LEU*     1.3    80.8    -      -       -      +
    573B  LEU*     1.3    59.7    +      -       -      +
    575B  ARG*     3.0    37.7    +      -       -      +
    576B  VAL*     2.7    31.4    +      -       -      +
    878B  CYS*     3.8    20.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 573 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237B  TYR*     4.0    20.2    -      -       +      +
    272B  LEU*     4.9     3.8    -      -       +      -
    569B  MET*     3.1    34.4    +      -       +      +
    570B  VAL      4.0     1.6    -      -       -      +
    572B  ASN*     1.3    78.2    -      -       -      +
    574B  LEU*     1.3    61.6    +      -       -      +
    576B  VAL*     3.3    11.0    +      -       +      +
    579B  ILE*     3.2    55.5    -      -       +      +
    580B  ASN*     3.6     8.6    -      -       -      +
    581B  PRO*     3.8    19.1    -      -       +      -
    584B  MET*     3.7    40.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 574 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    570B  VAL*     3.1    24.4    +      -       +      +
    571B  LEU*     3.5    14.1    -      -       +      +
    573B  LEU*     1.3    77.8    -      -       -      +
    575B  ARG*     1.3    61.1    +      -       -      +
    576B  VAL      3.8     4.7    -      -       -      +
    579B  ILE      5.1     0.8    -      -       -      +
    580B  ASN*     5.1     2.0    -      -       +      -
    581B  PRO*     3.3    30.1    -      -       +      -
    855B  LYS*     4.8     4.0    -      -       +      -
    858B  LEU*     4.6     5.2    -      -       +      -
    864B  ALA*     4.3    22.0    -      -       +      -
    868B  ASP*     4.1    53.1    -      -       +      +
    869B  VAL*     5.5     0.2    -      -       -      -
    870B  ILE*     4.7    14.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 575 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237B  TYR*     2.3    39.0    +      -       -      +
    238B  ARG*     4.5     6.0    +      -       -      +
    571B  LEU      3.0    11.6    +      -       -      +
    572B  ASN*     3.0    32.4    +      -       -      +
    574B  LEU*     1.3    76.2    -      -       -      +
    576B  VAL*     1.3    74.4    +      -       -      +
    577B  GLU*     3.5     4.3    +      -       -      +
    870B  ILE*     3.9    31.9    -      -       +      +
    875B  ARG*     4.2    25.7    +      -       +      +
    878B  CYS*     4.5    13.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 576 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236B  LEU      6.0     0.2    -      -       -      +
    237B  TYR*     4.0    23.8    -      -       +      +
    272B  LEU*     5.7     4.5    -      -       +      -
    572B  ASN      2.7    22.2    +      -       -      +
    573B  LEU*     3.3    10.0    -      -       +      +
    574B  LEU      3.4     4.4    -      -       -      +
    575B  ARG*     1.3    91.8    -      -       -      +
    577B  GLU*     1.3    61.4    +      -       -      +
    578B  GLU      4.3     1.3    -      -       -      +
    579B  ILE*     3.2    51.3    -      -       +      +
----------------------------------------------------------
 Back to top of page


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