Contacts of the strand formed by residues 199 - 204 (chain I) in PDB entry 1QDU


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 199 (chain I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161I  PRO*     3.8    21.0    +      -       +      +
    163I  GLY      3.2     9.9    +      -       -      +
    164I  TYR*     3.5    35.0    +      -       +      -
    165I  CYS      3.2    17.7    +      -       -      -
    198I  PHE*     1.3    70.3    -      -       -      +
    200I  ILE*     1.3    68.8    +      -       -      +
    201I  LYS*     3.3    30.7    +      -       -      +
    227I  MET*     5.2     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 200 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165I  CYS*     3.7    14.6    -      -       +      +
    167I  ILE*     3.4    32.3    -      -       +      -
    190I  THR*     3.7    36.8    -      -       +      +
    193I  PHE*     3.9    15.0    -      -       +      -
    194I  GLU*     3.9    28.9    -      -       +      +
    198I  PHE      3.6    13.2    -      -       -      +
    199I  GLU*     1.3    80.2    -      -       -      +
    201I  LYS*     1.3    72.1    +      -       -      +
    202I  PRO*     3.6    17.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 201 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164I  TYR*     4.1    15.7    -      -       +      -
    165I  CYS      3.3     5.7    +      -       -      -
    166I  LEU*     3.8    14.7    -      -       +      -
    167I  ILE      3.4    16.6    +      -       -      -
    199I  GLU*     3.3    31.9    +      -       -      +
    200I  ILE*     1.3    83.8    -      -       -      +
    202I  PRO*     1.3    69.2    -      -       +      +
    203I  HIS*     3.2    13.3    -      -       -      +
    218I  TYR*     3.0    35.2    -      -       +      +
    221I  MET*     6.0     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 202 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167I  ILE*     3.8    17.9    -      -       +      +
    190I  THR*     5.1     5.4    -      -       -      +
    200I  ILE*     3.6    19.0    -      -       +      +
    201I  LYS*     1.3    90.6    -      -       -      +
    203I  HIS*     1.3    76.2    +      -       -      +
    204I  HIS*     3.9    21.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 203 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166I  LEU*     5.4     2.0    -      -       +      -
    167I  ILE      3.2     8.8    +      -       -      +
    168I  ILE*     4.5     7.6    -      -       +      -
    169I  ASN      3.0    24.8    +      -       -      -
    201I  LYS*     3.2    20.7    +      -       +      +
    202I  PRO*     1.3    86.8    +      -       -      +
    204I  HIS*     1.3    70.8    +      -       -      +
    206I  CYS*     4.1     8.7    -      -       -      -
    214I  ILE*     3.3    50.6    -      -       +      +
    217I  ILE*     6.4     1.8    -      -       +      -
    218I  TYR*     4.4    15.2    +      +       -      -
----------------------------------------------------------
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Residues in contact with HIS 204 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167I  ILE*     5.5     0.7    -      -       +      -
    169I  ASN*     3.2    34.6    +      -       +      +
    186I  ALA*     5.3     6.3    -      -       +      -
    202I  PRO*     3.9    23.1    -      -       +      +
    203I  HIS*     1.3    84.0    +      -       -      +
    205I  ASP*     1.3    82.6    +      -       -      +
    206I  CYS*     3.3     7.8    +      -       -      -
    210I  GLN*     5.8     0.3    -      -       -      -
----------------------------------------------------------
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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