Contacts of the helix formed by residues 823 - 833 (chain A) in PDB entry 3BWT


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 GLY 823 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  ILE*     3.8    24.9    -      -       -      +
    818A  GLU      3.4     7.5    +      -       -      -
    819A  ILE      3.3     9.9    -      -       -      -
    821A  ASN      3.3     0.4    -      -       -      -
    822A  ASN*     1.3    80.8    -      -       -      +
    824A  GLY*     1.3    61.0    +      -       -      +
    826A  THR*     3.8     5.7    +      -       -      +
    827A  GLY*     2.8    25.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 824 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    819A  ILE      3.4     8.1    +      -       -      -
    820A  LEU      3.5    16.1    +      -       -      -
    821A  ASN      4.1     4.2    +      -       -      -
    822A  ASN      3.8     0.8    -      -       -      -
    823A  GLY*     1.3    76.4    -      -       -      +
    825A  GLU*     1.3    57.8    +      -       -      -
    828A  ILE*     2.8    38.0    +      -       -      +
    862A  ILE*     4.6     5.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 825 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    824A  GLY*     1.3    71.0    -      -       -      -
    826A  THR*     1.3    56.9    +      -       -      +
    829A  GLN*     2.8    35.3    +      -       +      +
    862A  ILE*     3.4    42.7    -      -       +      +
    865A  PRO*     4.2    16.1    -      -       -      +
    866A  LEU*     4.0    20.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 826 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    823A  GLY      4.2     4.5    -      -       -      +
    824A  GLY      3.2     0.6    -      -       -      -
    825A  GLU*     1.3    78.3    -      -       -      +
    827A  GLY*     1.3    61.1    +      -       -      +
    829A  GLN*     3.3    13.9    +      -       -      +
    830A  SER*     2.9    36.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 827 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  ILE*     3.9    22.7    -      -       -      -
    823A  GLY*     2.8    27.9    +      -       -      -
    826A  THR*     1.3    75.8    -      -       -      +
    828A  ILE*     1.3    56.7    +      -       -      +
    830A  SER*     3.0    11.6    +      -       -      -
    831A  LEU*     2.9    30.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 828 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  ILE*     4.6     0.2    -      -       -      +
    819A  ILE*     4.2    28.7    -      -       +      +
    820A  LEU*     4.4    13.9    -      -       +      -
    824A  GLY      2.8    23.0    +      -       -      +
    825A  GLU      4.1     1.3    -      -       -      +
    827A  GLY*     1.3    75.3    -      -       -      +
    829A  GLN*     1.3    59.0    +      -       -      +
    831A  LEU*     3.1     8.1    +      -       +      +
    832A  LEU*     2.8    27.9    +      -       +      +
    841A  LEU*     3.9    14.1    -      -       +      +
    859A  LEU*     4.6     9.9    -      -       +      +
    862A  ILE*     3.8    38.6    -      -       +      -
    863A  VAL*     3.9    25.6    -      -       +      -
    866A  LEU*     4.3     8.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 829 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    825A  GLU*     2.8    25.0    +      -       -      +
    826A  THR*     3.6    11.2    +      -       -      +
    828A  ILE*     1.3    73.7    -      -       -      +
    830A  SER*     1.3    63.0    +      -       -      +
    832A  LEU*     3.5     3.7    +      -       +      +
    833A  ASN*     3.2    45.9    +      -       -      +
    866A  LEU*     3.6    36.8    -      -       +      +
    871A  ILE*     6.2     0.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 830 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  ILE*     4.9     7.6    -      -       -      +
    794A  ILE*     4.6    10.0    -      -       -      +
    826A  THR*     2.9    23.5    +      -       -      +
    827A  GLY*     3.1    15.4    -      -       -      -
    829A  GLN*     1.3    77.6    -      -       -      +
    831A  LEU*     1.3    63.6    +      -       -      +
    833A  ASN*     3.2     4.0    +      -       -      +
    834A  ASP*     3.1    26.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 831 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  ILE*     4.0    17.3    -      -       +      -
    793A  SER*     3.9    26.7    -      -       -      +
    794A  ILE*     3.9    14.8    -      -       +      -
    819A  ILE*     4.1    31.4    -      -       +      -
    827A  GLY      2.9    17.4    +      -       -      +
    828A  ILE*     3.1     9.4    +      -       -      +
    830A  SER*     1.3    71.3    -      -       -      +
    832A  LEU*     1.3    67.5    +      -       -      +
    833A  ASN      2.8     3.9    +      -       -      -
    834A  ASP*     3.0     6.1    +      -       -      -
    837A  GLY*     3.6    25.6    -      -       -      +
    838A  ASN*     2.9    23.2    +      -       -      -
    840A  VAL*     4.8     0.9    -      -       +      -
    841A  LEU*     4.0    24.2    -      -       +      +
    844A  ALA*     6.2     0.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 832 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    828A  ILE*     2.8    20.9    +      -       +      +
    829A  GLN*     3.7     6.1    -      -       -      +
    831A  LEU*     1.3    72.8    -      -       -      +
    833A  ASN*     1.3    61.2    +      -       -      +
    834A  ASP      3.8     0.2    +      -       -      -
    838A  ASN*     3.0    23.5    -      -       -      +
    841A  LEU*     3.6    13.1    -      -       +      +
    863A  VAL*     5.0     3.4    -      -       +      +
    866A  LEU*     3.6    34.1    -      -       +      -
    867A  LEU*     3.8    23.3    -      -       +      -
    871A  ILE*     3.7    33.0    -      -       +      -
    876A  HIS*     3.6     9.9    -      -       -      -
    877A  GLY*     4.9     1.8    -      -       -      -
    880A  ILE*     3.7    29.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 833 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    829A  GLN*     3.2    40.0    +      -       -      +
    830A  SER*     3.2     4.5    +      -       -      +
    831A  LEU      2.9     1.6    -      -       -      -
    832A  LEU*     1.3    79.8    -      -       -      +
    834A  ASP*     1.3    59.8    +      -       -      +
    835A  SER      4.1     0.5    +      -       -      -
    871A  ILE*     3.8    32.2    -      -       -      +
    876A  HIS*     4.4    14.7    +      -       -      -
----------------------------------------------------------
 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