Contacts of the strand formed by residues 492 - 495 (chain D) in PDB entry 2DB3


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 THR 492 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    485D  LEU*     3.8    20.5    -      -       +      +
    488D  GLN      4.4     4.3    -      -       -      +
    489D  ALA*     2.5    40.2    -      -       -      +
    490D  ASP      4.2     1.3    -      -       -      +
    491D  GLY*     1.3    75.1    -      -       -      +
    493D  ILE*     1.3    61.6    +      -       -      +
    494D  VAL*     3.7    18.4    -      -       -      +
    535D  PHE*     3.5     6.6    -      -       -      -
    541D  LYS      3.5     3.2    +      -       -      +
    542D  VAL*     3.5     5.7    -      -       +      +
    543D  LEU      3.0    22.9    +      -       -      -
    560D  HIS*     3.1    28.5    +      -       +      +
    562D  ILE*     3.9     7.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 493 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491D  GLY      4.3     0.2    +      -       -      -
    492D  THR*     1.3    74.2    +      -       -      +
    494D  VAL*     1.3    63.7    +      -       -      +
    495D  PHE*     3.7    34.7    +      -       +      -
    535D  PHE*     5.0     0.4    -      -       +      -
    543D  LEU*     3.2    36.6    -      -       +      +
    545D  ALA*     4.5     5.8    -      -       +      -
    549D  ALA*     4.3    13.2    -      -       +      +
    553D  LEU*     5.9     2.0    -      -       +      -
    555D  ILE*     6.2     0.4    -      -       +      -
    558D  ILE*     3.8    31.6    -      -       +      +
    560D  HIS      2.9     7.9    +      -       -      +
    561D  VAL*     3.7    29.7    -      -       +      +
    562D  ILE      3.0    21.1    +      -       -      +
    579D  ARG*     4.6     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 494 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481D  LEU*     4.5    15.9    -      -       +      -
    485D  LEU*     5.0     0.4    -      -       +      -
    492D  THR*     3.7    15.7    -      -       -      +
    493D  ILE*     1.3    76.8    -      -       -      +
    495D  PHE*     1.3    62.2    +      -       -      +
    496D  VAL*     3.7     1.4    +      -       +      -
    505D  LEU*     4.3    11.7    -      -       +      -
    542D  VAL*     4.1    10.5    -      -       +      -
    543D  LEU      2.7     8.7    +      -       -      -
    544D  ILE*     3.4    29.0    -      -       +      +
    545D  ALA      2.8    27.8    +      -       -      +
    562D  ILE*     3.4    18.2    -      -       +      +
    564D  TYR*     3.8    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 495 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    493D  ILE*     3.7    23.3    -      -       +      -
    494D  VAL*     1.3    72.8    -      -       -      +
    496D  VAL*     1.3    60.4    +      -       -      +
    545D  ALA*     3.2     5.6    -      -       +      -
    546D  THR      3.6    26.9    -      -       -      -
    549D  ALA*     3.4    34.5    -      -       +      -
    550D  SER*     3.7    13.2    -      -       -      -
    561D  VAL*     3.7    21.8    -      -       +      -
    562D  ILE      2.8    10.3    +      -       -      +
    563D  ASN*     3.8     4.7    -      -       -      +
    564D  TYR*     3.0    26.7    +      -       -      +
    565D  ASP      3.3     5.9    +      -       -      +
    576D  ARG*     3.5    63.7    -      -       +      +
    579D  ARG*     4.0     3.4    -      -       +      -
----------------------------------------------------------
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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