Contacts of the strand formed by residues 183 - 186 (chain W) 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 VAL 183 (chain W).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15W  LEU*     3.7    31.6    -      -       +      +
     18W  ILE*     3.5    33.0    -      -       +      -
     19W  ALA*     3.9    13.0    -      -       +      +
     22W  ILE*     4.9     1.1    -      -       +      -
    143W  ASP      2.7     9.8    +      -       -      +
    144W  PHE*     2.7    37.4    -      -       +      +
    145W  GLY      3.1     6.4    +      -       -      -
    182W  LEU*     1.3    71.5    -      -       -      +
    184W  PRO*     1.3    65.8    -      -       +      +
    185W  ILE*     3.4     2.1    +      -       +      -
    225W  GLY      4.6     1.6    -      -       -      +
    226W  THR*     4.3    21.1    -      -       -      -
    227W  LEU*     4.5    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 184 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145W  GLY      3.6     5.4    -      -       -      +
    173W  TYR*     3.9     7.4    -      -       +      +
    174W  ALA*     4.0    29.8    -      -       +      -
    177W  CYS*     4.0    15.2    -      -       +      -
    178W  GLN*     3.8    21.8    -      -       +      +
    182W  LEU      3.1    12.8    -      -       -      +
    183W  VAL*     1.3    81.7    -      -       +      +
    185W  ILE*     1.3    62.0    +      -       -      +
    186W  VAL*     3.1     9.8    +      -       +      +
    225W  GLY      4.0     5.8    -      -       -      +
    226W  THR*     3.8    19.3    -      -       +      +
    227W  LEU      3.4    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 185 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29W  ILE*     3.6    19.7    -      -       +      -
     77W  ILE*     3.9    15.7    -      -       +      -
    144W  PHE*     3.2    42.2    -      -       +      -
    145W  GLY      2.7    15.5    +      -       -      +
    146W  LYS*     4.3    12.6    -      -       +      -
    147W  TRP      4.3     1.6    +      -       -      -
    173W  TYR*     3.1    13.2    +      -       -      -
    183W  VAL      3.4     1.1    +      -       -      +
    184W  PRO*     1.3    69.9    -      -       -      +
    186W  VAL*     1.3    59.9    +      -       -      +
    187W  GLU*     3.3     7.4    +      -       +      +
    227W  LEU*     4.1    18.8    -      -       +      -
    228W  LEU      4.9     1.3    -      -       -      -
    229W  LYS*     3.6    39.5    -      -       +      +
    300W  SER*     5.3     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 186 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170W  LEU*     4.5    11.4    -      -       +      -
    173W  TYR*     4.8     7.6    -      -       +      -
    174W  ALA*     4.8    11.2    -      -       +      -
    184W  PRO*     3.1    11.6    +      -       +      +
    185W  ILE*     1.3    69.6    -      -       -      +
    187W  GLU*     1.3    62.4    +      -       -      +
    188W  PRO*     4.4     3.6    -      -       +      -
    212W  VAL*     4.0    26.7    -      -       +      -
    213W  TYR*     5.0     2.5    -      -       -      +
    216W  LEU*     4.3    24.2    -      -       +      -
    226W  THR*     4.2    11.0    -      -       +      +
    227W  LEU      3.5    17.8    +      -       -      +
    228W  LEU*     3.4    17.3    -      -       +      +
    229W  LYS      3.0    22.7    +      -       -      -
----------------------------------------------------------
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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