Contacts of the strand formed by residues 698 - 704 (chain F) in PDB entry 1XSK


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 GLU 698 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    666F  ASN*     4.5     6.3    -      -       -      +
    693F  LEU*     5.0     0.7    -      -       -      -
    697F  HIS*     1.3    79.2    +      -       -      +
    699F  ALA*     1.3    62.1    +      -       -      +
    700F  VAL*     3.9    15.6    +      -       +      +
    715F  LYS*     3.3    34.6    +      -       -      +
    716F  ALA      3.4    11.7    -      -       -      +
    717F  ALA*     3.9    22.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 699 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    666F  ASN      3.5    28.9    -      -       -      +
    668F  LEU*     3.5    19.7    -      -       -      +
    690F  LEU*     3.8    29.2    -      -       +      -
    693F  LEU*     4.3     4.9    -      -       +      +
    697F  HIS      4.3     0.2    -      -       -      -
    698F  GLU*     1.3    71.1    -      -       -      +
    700F  VAL*     1.3    62.6    +      -       -      +
    716F  ALA      3.0    30.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 700 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    613F  ASN*     5.6     3.1    +      -       -      -
    668F  LEU*     3.9     9.7    +      -       -      +
    698F  GLU*     3.9    22.1    +      -       +      +
    699F  ALA*     1.3    76.6    -      -       -      +
    701F  CYS*     1.3    67.9    +      -       -      +
    702F  GLU*     4.4    10.1    -      -       +      -
    713F  THR*     3.8    26.0    -      -       +      -
    714F  LEU      3.8     2.2    -      -       -      -
    715F  LYS*     4.0    25.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 701 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    668F  LEU*     2.9    43.3    -      -       +      +
    670F  ALA*     3.5    33.9    -      -       -      -
    688F  PHE*     3.5    18.5    -      -       +      -
    700F  VAL*     1.3    73.4    -      -       -      +
    702F  GLU*     1.3    65.6    +      -       -      +
    703F  VAL*     4.1     3.5    +      -       -      -
    712F  PHE      3.9     0.7    -      -       -      +
    713F  THR*     3.5     3.6    -      -       -      +
    714F  LEU*     2.9    31.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 702 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571F  PRO      4.5     1.6    -      -       -      +
    572F  TYR*     5.9     0.3    -      -       -      -
    575F  ARG*     3.5    43.4    +      -       +      +
    579F  ARG*     4.4    10.0    +      -       -      -
    700F  VAL*     4.4     8.0    -      -       +      +
    701F  CYS*     1.3    79.8    -      -       -      +
    703F  VAL*     1.3    62.7    +      -       -      +
    704F  PRO*     3.6     7.8    -      -       -      +
    710F  VAL*     3.4    30.8    -      -       +      +
    712F  PHE      3.6     3.8    -      -       -      -
    713F  THR*     3.9    20.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 703 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571F  PRO*     4.8     4.3    -      -       +      -
    575F  ARG*     5.1     0.2    -      -       -      -
    670F  ALA*     4.2    13.5    -      -       +      -
    682F  TRP*     4.2    10.8    -      -       +      +
    683F  HIS*     3.9    31.2    -      -       +      +
    686F  THR*     4.6     3.8    -      -       +      +
    688F  PHE*     3.8    35.4    -      -       +      -
    701F  CYS*     4.5     0.2    -      -       -      -
    702F  GLU*     1.3    74.8    -      -       -      +
    704F  PRO*     1.3    69.0    -      -       +      +
    710F  VAL*     3.6     2.5    -      -       -      -
    711F  ILE*     2.7    35.0    +      -       +      +
    712F  PHE*     2.8    27.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 704 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571F  PRO*     3.1    26.7    -      -       +      +
    574F  TYR*     4.2     6.1    -      -       +      +
    575F  ARG*     3.9    27.3    -      -       +      +
    682F  TRP*     3.2    28.5    -      -       +      +
    683F  HIS*     5.1     1.9    +      -       -      -
    702F  GLU      3.6     6.7    -      -       -      +
    703F  VAL*     1.3    96.3    -      -       +      +
    705F  ALA*     1.3    64.3    +      -       -      +
    708F  GLY*     3.7    21.1    -      -       -      +
    709F  SER      3.1     8.5    -      -       -      +
    710F  VAL*     4.3     0.4    -      -       -      -
    711F  ILE*     3.9     3.0    -      -       -      +
----------------------------------------------------------
 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