Contacts of the strand formed by residues 55 - 58 (chain Y) in PDB entry 5FLX


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 ILE 55 (chain Y).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41Y  ARG*     2.7    46.2    +      -       +      +
     44Y  LEU*     3.8    20.9    -      -       +      +
     45Y  ALA*     3.6    34.5    -      -       +      +
     48Y  TYR*     4.7     1.1    -      -       +      -
     50Y  THR*     3.6    20.0    -      -       -      +
     51Y  THR      4.1     2.7    -      -       -      +
     52Y  PRO      3.2     7.0    +      -       -      +
     54Y  VAL*     1.3    89.7    -      -       +      +
     56Y  PHE*     1.3    70.2    +      -       -      +
     57Y  VAL*     5.8     0.9    -      -       +      -
     74Y  MET      3.5     9.6    -      -       -      +
     75Y  ILE*     3.7    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 56 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37Y  LYS*     4.9     3.1    -      -       -      +
     41Y  ARG*     4.6     1.8    -      -       -      +
     44Y  LEU*     5.4     0.3    -      -       -      +
     53Y  ASP      3.9    16.8    -      -       -      -
     54Y  VAL      4.7     3.1    -      -       -      -
     55Y  ILE*     1.3    90.2    -      -       -      +
     57Y  VAL*     1.3    61.1    +      -       -      +
     73Y  GLY*     3.6     0.7    -      -       -      -
     74Y  MET*     2.5    52.3    +      -       +      +
     76Y  TYR*     4.4     7.6    -      +       -      -
     79Y  LEU*     6.5     0.7    -      -       +      -
     82Y  ALA*     3.8    22.4    -      -       +      -
     83Y  LYS*     6.0     1.3    -      -       +      -
     86Y  GLU*     3.6    35.0    -      -       +      -
     90Y  ARG*     4.2    23.3    -      -       +      -
     91Y  LEU*     4.6    12.3    -      -       +      -
     94Y  HIS*     3.4    38.4    -      +       -      -
     96Y  LEU*     6.6     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 57 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25Y  ILE*     4.8    11.2    -      -       +      -
     37Y  LYS*     3.2    48.8    +      -       +      +
     40Y  ILE*     5.4     9.9    -      -       +      -
     41Y  ARG*     5.1    10.8    -      -       +      -
     44Y  LEU*     5.9     2.5    -      -       +      -
     55Y  ILE*     5.8     1.6    -      -       +      -
     56Y  PHE*     1.3    78.8    -      -       -      +
     58Y  PHE*     1.3    69.3    +      -       -      +
     59Y  GLY      5.0     0.4    -      -       -      +
     60Y  PHE*     4.6    23.5    -      -       +      -
     71Y  GLY*     5.1     2.2    -      -       -      -
     72Y  PHE      3.4    23.1    -      -       -      +
     73Y  GLY*     4.0     4.7    -      -       -      -
     74Y  MET      4.4     0.2    -      -       -      +
     90Y  ARG*     5.7     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 58 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    5721    U      4.7     1.1    -      -       -      -
     56E  LEU*     3.5    33.7    -      -       +      -
     57Y  VAL*     1.3    78.0    -      -       -      +
     59Y  GLY*     1.3    69.3    +      -       -      +
     60Y  PHE*     5.1     1.3    -      -       -      -
     72Y  PHE*     3.0    59.3    +      +       +      +
     74Y  MET*     3.5    25.4    -      -       +      -
     90Y  ARG*     3.2    48.0    -      -       +      +
----------------------------------------------------------
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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