Contacts of the strand formed by residues 68 - 73 (chain K) in PDB entry 6D6U


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 ALA 68 (chain K).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48K  ILE*     4.4    18.8    -      -       +      -
     60K  TYR*     3.5    26.0    -      -       +      -
     64K  PHE*     3.5    14.4    +      -       +      +
     66K  GLY*     3.6     6.4    +      -       -      -
     67K  LYS*     1.3    82.3    +      -       -      +
     69K  THR*     1.3    66.6    +      -       -      +
     81K  LEU*     4.3    15.9    -      -       +      -
     82K  GLN      4.1     4.5    -      -       -      -
     83K  LEU*     4.4    10.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 69 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60K  TYR*     3.3     6.3    -      -       -      +
     66K  GLY      5.7     0.7    +      -       -      -
     68K  ALA*     1.3    78.6    +      -       -      +
     70K  ILE*     1.3    64.9    +      -       -      +
     71K  THR*     4.1    20.1    +      -       +      -
     80K  TYR      4.0     0.5    -      -       -      +
     81K  LEU*     3.6     2.9    -      -       -      +
     82K  GLN*     3.0    47.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 70 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36K  TRP*     3.6    38.8    -      -       +      +
     48K  ILE*     5.0     2.2    -      -       +      -
     49K  GLY*     3.8    21.8    -      -       -      +
     50K  ARG      4.0     8.3    -      -       -      +
     51K  ILE*     3.5    37.3    -      -       +      +
     58K  THR*     3.8    13.1    -      -       +      +
     59K  LYS      4.9     0.2    -      -       -      +
     60K  TYR*     2.7    33.5    +      -       +      +
     69K  THR*     1.3    76.8    -      -       -      +
     71K  THR*     1.3    69.3    +      -       -      +
     79K  ALA*     5.5     0.9    -      -       +      -
     80K  TYR      3.5     7.2    -      -       -      +
     81K  LEU*     3.7    17.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 71 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19K  LYS*     5.4     3.5    +      -       -      -
     51K  ILE*     4.0     4.7    -      -       -      -
     69K  THR*     4.1    18.9    +      -       +      -
     70K  ILE*     1.3    79.0    -      -       -      +
     72K  THR*     1.3    57.5    +      -       -      +
     79K  ALA*     3.9     0.7    -      -       -      +
     80K  TYR*     2.6    52.0    +      -       -      +
     82K  GLN*     5.7     2.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 72 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29K  ILE*     3.4    19.9    -      -       -      +
     34K  MET*     6.5     0.2    -      -       -      -
     51K  ILE*     3.8    21.7    -      -       +      +
     52K  ASP      5.4     0.2    -      -       -      +
     53K  PRO*     4.2    24.5    -      -       +      +
     56K  GLY*     5.8     4.0    -      -       -      -
     71K  THR*     1.3    77.8    -      -       -      +
     73K  ASP*     1.3    58.2    +      -       -      +
     74K  THR*     4.0    10.3    +      -       +      +
     78K  THR      2.9    21.3    +      -       -      -
     79K  ALA*     3.8     9.0    -      -       -      +
     80K  TYR*     4.4     2.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 73 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72K  THR*     1.3    71.9    +      -       -      +
     74K  THR*     1.3    66.1    +      -       -      +
     75K  PHE*     3.3    20.1    +      -       -      +
     76K  SER*     2.8    30.7    +      -       -      +
     77K  ASN      3.0    16.8    +      -       -      -
     78K  THR      2.8    17.6    +      -       -      +
     80K  TYR*     4.0    20.5    +      -       +      -
----------------------------------------------------------
 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