Contacts of the strand formed by residues 56 - 60 (chain A) in PDB entry 5A91


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 GLN 56 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  LEU*     3.1    11.0    -      -       -      +
     49A  ILE*     4.3    17.4    -      -       +      +
     54A  ASN      3.8    11.0    +      -       -      +
     55A  SER*     1.3    83.0    -      -       -      +
     57A  ILE*     1.3    66.8    +      -       -      +
     59A  LEU*     3.7    31.6    +      -       +      +
    184A  LEU*     4.0    25.6    -      -       -      +
    188A  GLN*     4.6     8.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  VAL*     3.7    34.5    -      -       +      -
     30A  GLN*     4.1    12.1    -      -       -      +
     33A  LEU*     4.3     5.4    -      -       +      -
     46A  VAL*     3.7     3.8    -      -       +      +
     47A  ALA*     3.4     4.3    +      -       -      -
     48A  LEU*     2.9    50.4    +      -       +      -
     56A  GLN*     1.3    76.1    -      -       -      +
     59A  LEU*     1.3    63.2    +      -       -      +
    286A  VAL*     3.6    41.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  GLN*     2.8    30.3    +      -       -      +
     46A  VAL*     3.4     1.8    -      -       -      -
     47A  ALA*     3.9    14.8    -      -       +      -
     48A  LEU      4.7     0.9    -      -       -      +
     49A  ILE*     6.2     0.2    -      -       +      -
     56A  GLN*     3.7    38.1    -      -       +      +
     57A  ILE*     1.3    83.1    -      -       -      +
     60A  TYR*     1.3    60.4    +      -       -      +
     61A  ARG      4.3     0.2    -      -       -      -
     62A  ALA*     3.7    24.0    -      -       +      +
     63A  ASP*     5.8     3.1    -      -       -      +
    184A  LEU*     4.1    17.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  GLN*     3.6    17.7    -      -       -      -
     33A  LEU*     3.8    28.7    -      -       +      -
     34A  GLU*     3.5    46.8    +      -       +      +
     37A  GLU*     2.7    36.2    +      -       +      -
     44A  LEU*     3.3    40.2    -      -       +      -
     45A  GLY*     3.3     0.9    -      -       -      -
     46A  VAL*     2.8    42.0    +      -       +      -
     59A  LEU*     1.3    74.7    -      -       -      +
     61A  ARG*     1.3    81.9    +      -       +      +
     62A  ALA      3.1     0.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  GLU*     2.8    37.4    +      -       -      -
     43A  ARG*     3.7    13.9    -      -       -      +
     44A  LEU      3.3    20.6    -      -       -      +
     45A  GLY*     4.3     2.0    -      -       -      -
     60A  TYR*     1.3    84.9    +      -       +      +
     62A  ALA*     1.3    63.9    +      -       -      +
     63A  ASP      3.2     3.1    -      -       -      -
     64A  GLU*     2.9    61.1    +      -       +      +
     66A  PHE*     3.9     1.8    -      -       +      -
    183A  PRO*     3.7    10.6    -      -       -      +
----------------------------------------------------------
 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