Contacts of the helix formed by residues 58 - 69 (chain B) in PDB entry 3BK3


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 58 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81A  PRO*     6.0     0.9    -      -       +      -
     84A  LEU*     4.4     9.4    -      -       +      +
    105A  ASP*     3.5    27.9    +      -       -      +
     57B  SER*     1.3    76.6    -      -       -      +
     59B  ASN*     1.3    66.1    +      -       -      +
     60B  HIS*     3.7     9.0    -      -       +      +
     61B  ALA*     2.9    41.5    +      -       +      +
     62B  ILE*     3.1     9.0    +      -       -      +
    113B  CYS      3.3     3.6    +      -       -      -
    114B  ARG*     3.8    40.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 59 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     4.0     4.0    -      -       -      +
    104A  GLN*     2.8    40.1    +      -       -      +
    105A  ASP*     3.3     6.0    +      -       +      +
    106A  MET*     3.7    12.1    -      -       -      -
     57B  SER      3.7     1.0    +      -       -      -
     58B  THR*     1.3    71.8    +      -       -      +
     60B  HIS*     1.3    65.4    -      -       -      +
     62B  ILE*     2.9    19.4    +      -       -      +
     63B  VAL*     3.0    10.7    +      -       -      +
      2C  ILE*     3.1    27.6    -      -       +      +
      3C  THR*     3.2    41.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 60 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     5.9     1.3    -      -       +      +
     38A  TYR*     4.6     0.9    -      -       -      -
     40A  ALA*     3.8    11.8    -      -       +      +
     41A  MET      2.7    28.3    +      -       -      -
     42A  TYR*     4.3     2.9    -      -       +      -
     81A  PRO*     4.3     9.6    -      -       +      +
     84A  LEU*     3.9    12.6    -      -       +      -
    105A  ASP      2.8    21.2    +      -       -      +
    106A  MET*     3.3    24.9    -      -       -      +
    108A  VAL*     3.2    26.9    -      -       +      +
     58B  THR*     3.3     5.3    -      -       +      +
     59B  ASN*     1.3    73.4    -      -       -      +
     61B  ALA*     1.3    64.1    +      -       -      +
     63B  VAL*     3.1     9.1    +      -       +      +
     64B  GLN*     2.8    51.4    +      -       +      +
    114B  ARG*     4.7     1.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  SER*     4.1     7.4    -      -       -      +
     58B  THR*     2.9    30.6    +      -       +      +
     60B  HIS*     1.3    75.9    +      -       -      +
     62B  ILE*     1.3    58.4    +      -       -      +
     64B  GLN*     3.1     4.7    +      -       -      +
     65B  THR*     2.9    33.4    +      -       -      +
     77B  ALA*     3.9    22.7    -      -       +      +
    113B  CYS      3.5    19.1    -      -       -      +
    114B  ARG*     4.0     5.8    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 62 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  TRP*     4.5     1.1    -      -       +      -
     51B  LEU*     4.0    32.3    -      -       +      -
     57B  SER*     3.8    35.2    -      -       -      +
     58B  THR      3.1     6.9    +      -       -      +
     59B  ASN*     2.9     9.4    +      -       -      +
     61B  ALA*     1.3    73.1    -      -       -      +
     63B  VAL*     1.3    68.3    +      -       -      +
     65B  THR*     3.1    15.4    +      -       -      -
     66B  LEU*     3.2    24.0    +      -       +      +
      1C  LEU*     3.4    25.8    -      -       +      +
      2C  ILE*     3.8    23.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     6.2     0.2    -      -       +      -
     21A  VAL*     3.9    38.1    -      -       +      -
     23A  PHE*     5.5     0.4    -      -       +      -
     26A  VAL*     5.7     2.5    -      -       +      -
     28A  TRP*     4.1    27.6    -      -       +      -
     38A  TYR*     4.0    21.3    -      -       +      +
     40A  ALA*     5.0     2.7    -      -       +      -
    106A  MET*     4.1    17.5    -      -       +      -
     59B  ASN      3.0    13.2    +      -       -      +
     60B  HIS*     3.1     9.4    +      -       +      +
     62B  ILE*     1.3    79.9    -      -       -      +
     64B  GLN*     1.3    63.7    +      -       -      +
     66B  LEU*     3.1     5.2    +      -       -      +
     67B  VAL*     3.1    22.1    +      -       +      +
      2C  ILE*     4.5     1.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     5.7     3.4    -      -       +      -
     42A  TYR*     3.6    18.3    -      -       +      +
     43A  CYS      4.8     4.8    +      -       -      -
     81A  PRO*     5.5     1.9    -      -       -      +
     60B  HIS*     2.8    46.7    +      -       +      +
     61B  ALA*     3.1     6.0    +      -       -      +
     63B  VAL*     1.3    74.6    -      -       -      +
     65B  THR*     1.3    62.8    +      -       -      +
     67B  VAL*     3.8     7.0    -      -       -      +
     68B  ASN*     3.1    22.2    +      -       -      +
     74B  ILE*     4.1    12.5    -      -       +      +
     75B  PRO*     3.0    39.2    +      -       -      +
     76B  LYS      3.5    14.8    +      -       -      -
     77B  ALA*     4.2     9.0    -      -       -      +
    114B  ARG*     5.3     3.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  CYS*     4.7     8.6    +      -       -      +
     48B  PRO      3.7    24.8    +      -       -      +
     49B  PHE*     3.9    19.6    -      -       +      +
     51B  LEU*     3.7    20.7    -      -       +      +
     61B  ALA      2.9    19.0    +      -       -      -
     62B  ILE      3.1     6.2    +      -       -      -
     64B  GLN*     1.3    81.0    -      -       -      +
     66B  LEU*     1.3    64.1    +      -       +      +
     68B  ASN*     3.3     8.5    +      -       -      +
     69B  SER*     3.1    19.2    +      -       -      -
     76B  LYS*     5.4     2.8    -      -       +      +
     77B  ALA*     4.1    18.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  VAL*     4.3    31.7    -      -       +      +
     28A  TRP*     3.3    39.3    -      -       +      +
     49B  PHE*     3.7    29.6    -      -       +      -
     51B  LEU*     5.1     4.5    -      -       +      -
     62B  ILE*     3.2    25.2    +      -       +      +
     63B  VAL      3.1     6.8    +      -       -      +
     65B  THR*     1.3    78.4    -      -       +      +
     67B  VAL*     1.3    61.1    +      -       -      +
     69B  SER*     2.4    27.6    +      -       -      +
     70B  VAL*     3.7     4.2    +      -       -      +
      1C  LEU*     4.7     9.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     4.4    12.8    -      -       +      -
     20A  TYR      6.0     0.2    -      -       -      +
     21A  VAL*     4.2    25.8    -      -       +      -
     26A  VAL*     4.6    13.9    -      -       +      +
     63B  VAL*     3.1    18.7    +      -       +      +
     64B  GLN*     3.9     7.6    -      -       -      +
     65B  THR      3.3     0.2    -      -       -      -
     66B  LEU*     1.3    74.3    -      -       -      +
     68B  ASN*     1.3    52.9    +      -       -      +
     70B  VAL*     2.8    12.4    +      -       +      +
     71B  ASN*     2.7    40.5    +      -       +      +
     74B  ILE*     3.8    31.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PHE*     5.8     3.4    -      -       -      +
     64B  GLN      3.1    16.1    +      -       -      +
     65B  THR*     3.5     8.4    +      -       -      +
     67B  VAL*     1.3    79.1    -      -       -      +
     69B  SER*     1.3    60.9    +      -       -      +
     70B  VAL      2.9     5.2    +      -       -      -
     71B  ASN      3.4    20.6    +      -       -      -
     72B  SER*     3.7    15.8    +      -       -      +
     74B  ILE*     2.7    25.7    +      -       -      +
     75B  PRO*     3.7     5.4    -      -       -      +
     76B  LYS*     3.5    51.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PHE*     3.8    38.6    -      -       -      -
     65B  THR      3.1    10.3    +      -       -      -
     66B  LEU*     2.4    27.7    +      -       -      +
     67B  VAL      3.0     0.2    -      -       -      -
     68B  ASN*     1.3    80.2    -      -       -      +
     70B  VAL*     1.3    66.3    +      -       -      +
----------------------------------------------------------
 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