Contacts of the strand formed by residues 523 - 527 (chain X) in PDB entry 6KW5


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 523 (chain X).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    521X  ASP      4.2     7.9    -      -       -      +
    522X  THR*     1.3    71.4    -      -       -      +
    524X  THR*     1.3    58.2    +      -       -      +
    525X  LEU*     3.9    14.6    +      -       +      +
    605X  ARG      3.6     2.1    -      -       -      +
    606X  CYS*     3.5     7.3    -      -       -      -
    607X  GLU*     2.9    57.1    +      -       +      +
    609X  LYS*     4.2    23.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 524 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    513X  SER*     6.0     1.3    -      -       -      +
    515X  LEU*     4.6     7.9    -      -       +      -
    522X  THR*     3.5    18.8    +      -       -      +
    523X  GLU*     1.3    74.8    -      -       -      +
    525X  LEU*     1.3    60.8    +      -       -      +
    533X  VAL      5.0     0.5    -      -       -      +
    534X  LYS      5.0     1.9    -      -       -      +
    589X  GLU*     2.3    36.7    +      -       -      +
    591X  PHE*     3.8    22.4    -      -       -      -
    604X  PHE*     4.4     7.4    -      -       +      -
    605X  ARG      3.7     7.2    -      -       -      -
    606X  CYS*     3.7    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 525 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523X  GLU*     4.7    18.4    -      -       +      +
    524X  THR*     1.3    75.1    -      -       -      +
    526X  LEU*     1.3    64.1    +      -       -      +
    527X  THR*     4.3    16.4    -      -       +      -
    532X  PRO*     5.3     9.4    -      -       +      -
    533X  VAL      5.1     2.7    -      -       -      -
    603X  MET      4.1     0.3    -      -       -      +
    604X  PHE*     3.6    15.9    -      -       -      -
    605X  ARG*     3.7    47.2    +      -       +      +
    607X  GLU*     5.7     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 526 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    511X  LEU*     3.6    31.2    -      -       +      -
    525X  LEU*     1.3    80.1    -      -       -      +
    527X  THR*     1.3    59.9    +      -       -      +
    528X  ILE*     4.4    13.7    -      -       +      -
    531X  GLU      3.5     1.6    -      -       -      +
    532X  PRO*     3.3     1.2    -      -       -      +
    533X  VAL*     2.8    58.3    +      -       +      +
    591X  PHE*     4.0    22.2    -      -       +      -
    593X  ILE*     4.6    14.1    -      -       +      -
    602X  LEU*     4.7    17.7    -      -       +      -
    603X  MET      3.3    11.4    -      -       -      +
    604X  PHE*     3.7    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 527 (chain X). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    525X  LEU*     4.3    15.7    -      -       +      -
    526X  LEU*     1.3    75.1    -      -       -      +
    528X  ILE*     1.3    60.6    +      -       -      +
    529X  ASN      4.5     4.2    +      -       -      -
    530X  LYS*     3.5    33.7    -      -       -      +
    531X  GLU      3.4     3.8    -      -       -      -
    532X  PRO*     4.0    13.9    -      -       +      -
    601X  HIS*     4.8     0.5    +      -       -      -
    602X  LEU*     3.3     1.2    -      -       -      -
    603X  MET*     2.7    58.9    +      -       -      +
----------------------------------------------------------
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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