Contacts of the strand formed by residues 649 - 651 (chain D) in PDB entry 6T8O


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 ARG 649 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462D  LEU*     4.5     0.2    -      -       -      -
    463D  LEU*     3.5    22.5    -      -       +      +
    643D  LYS*     3.3    45.7    +      -       -      +
    646D  ILE      3.4    13.8    +      -       -      -
    647D  PRO*     3.3    17.6    +      -       -      -
    648D  THR*     1.3    78.3    -      -       -      +
    650D  ILE*     1.3    69.4    +      -       -      +
    651D  ALA      4.2     0.2    -      -       -      -
    663D  ILE*     2.4    50.1    +      -       +      +
    664D  LEU*     3.9    29.9    +      -       +      +
    665D  ASP*     3.6    20.0    +      -       -      +
    679D  LEU      4.5     0.2    -      -       -      -
    681D  LEU*     3.2    39.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 650 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443D  LEU*     4.5     5.6    -      -       +      -
    459D  MET*     6.0     0.2    -      -       +      -
    462D  LEU*     3.7    24.5    -      -       +      -
    463D  LEU      2.7    14.1    +      -       -      +
    464D  VAL*     3.4    10.9    -      -       +      -
    465D  ALA      3.1    24.6    +      -       -      +
    479D  MET*     4.5     5.2    -      -       +      -
    649D  ARG*     1.3    81.5    -      -       -      +
    651D  ALA*     1.3    62.1    +      -       -      +
    652D  PHE*     3.7    28.9    -      -       +      -
    663D  ILE*     3.5     5.9    -      -       -      +
    678D  MET*     3.7    33.0    -      -       +      -
    679D  LEU      3.8     0.9    -      -       -      -
    680D  TYR*     3.5    32.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 651 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    465D  ALA      4.0     3.6    -      -       -      -
    649D  ARG      4.2     0.4    -      -       -      -
    650D  ILE*     1.3    73.5    -      -       -      +
    652D  PHE*     1.3    63.5    +      -       -      +
    654D  VAL*     5.1     1.3    -      -       +      -
    663D  ILE*     4.3    14.8    -      -       +      -
    664D  LEU*     3.7    36.8    -      -       +      -
    669D  ALA*     4.0    13.9    -      -       +      -
    672D  LEU*     3.7     4.2    -      -       -      +
    678D  MET*     3.3     1.4    -      -       -      -
    679D  LEU*     2.8    36.7    +      -       +      +
----------------------------------------------------------
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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