Contacts of the strand formed by residues 28 - 32 (chain Y) in PDB entry 1XDM


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 GLY 28 (chain Y).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22Y  ILE      4.6     1.8    -      -       -      -
     23Y  VAL*     5.1     0.7    -      -       -      -
     27Y  LYS*     1.3    74.7    -      -       -      +
     29Y  ILE*     1.3    65.3    +      -       -      -
     72Y  SER      2.9     8.5    +      -       -      -
     73Y  ILE*     3.6     4.4    -      -       -      -
     74Y  GLY*     3.0    24.8    +      -       -      -
     75Y  GLY      3.6     2.9    +      -       -      -
    298Y  SER*     2.9    18.4    -      -       -      -
    299Y  PHE*     3.1    20.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 29 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22Y  ILE*     3.2    37.2    -      -       +      -
     28Y  GLY*     1.3    75.6    -      -       -      -
     30Y  LEU*     1.3    71.6    +      -       -      +
     73Y  ILE*     4.8     0.4    -      -       -      -
     75Y  GLY      3.0    15.3    -      -       -      +
     77Y  ILE*     3.7    18.2    -      -       +      -
    144Y  PHE*     4.0     5.6    -      -       +      -
    185Y  ILE*     3.7    26.7    -      -       +      -
    227Y  LEU*     4.1     9.0    -      -       +      -
    268Y  CYS*     4.4     9.0    -      -       -      -
    299Y  PHE*     2.7    13.0    +      -       -      +
    300Y  SER*     3.2    20.7    -      -       -      +
    301Y  TYR      3.2    24.8    +      -       -      +
    305Y  LEU*     3.9     7.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 30 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29Y  ILE*     1.3    76.8    -      -       -      +
     31Y  ALA*     1.3    64.5    +      -       -      +
     32Y  ALA*     3.5     7.8    +      -       +      +
     62Y  LEU*     4.9     5.4    -      -       +      -
     63Y  PHE*     4.1    14.1    -      -       +      -
     73Y  ILE*     4.1    14.8    -      -       +      +
     75Y  GLY      3.0     6.7    +      -       -      -
     76Y  VAL*     3.5    29.2    -      -       +      -
     77Y  ILE      2.8    27.2    +      -       -      -
    301Y  TYR      3.5     8.3    -      -       -      +
    305Y  LEU*     4.0    26.5    -      -       +      -
    306Y  GLN*     3.9    26.0    -      -       +      +
    327Y  PHE*     3.5    29.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 31 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30Y  LEU*     1.3    71.3    -      -       -      +
     32Y  ALA*     1.3    57.3    +      -       -      +
     33Y  ASP*     3.0    25.6    +      -       -      +
     34Y  GLU*     3.4     8.0    -      -       -      +
     77Y  ILE*     4.4    13.5    -      -       +      -
    146Y  LYS*     5.7     0.7    -      -       -      +
    229Y  LYS*     4.6     6.1    -      -       -      +
    300Y  SER      4.5     7.9    -      -       -      +
    301Y  TYR      2.7    24.6    +      -       -      +
    302Y  GLY*     4.0     6.4    -      -       -      -
    303Y  ARG*     4.9     6.1    -      -       -      +
    306Y  GLN*     3.0    17.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 32 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30Y  LEU*     3.5     6.1    +      -       +      -
     31Y  ALA*     1.3    72.7    -      -       -      +
     33Y  ASP*     1.3    54.7    +      -       -      +
     34Y  GLU*     3.0    17.8    +      -       -      +
     59Y  ARG*     3.6    29.5    +      -       +      -
     62Y  LEU*     5.1     2.2    -      -       +      -
     63Y  PHE*     3.7    32.1    -      -       +      -
     76Y  VAL*     4.2     3.1    -      -       +      -
     77Y  ILE      3.3    18.0    +      -       -      +
     78Y  LEU*     4.3     1.6    -      -       -      +
     79Y  PHE      4.0     3.8    +      -       -      -
    306Y  GLN*     3.7    11.9    -      -       -      +
----------------------------------------------------------
 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