Contacts of the strand formed by residues 197 - 200 (chain F) in PDB entry 3IFS


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 197 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62F  ARG*     2.6    44.3    +      -       -      +
     65F  LYS*     5.3     5.0    +      -       -      -
     66F  CYS*     3.9    22.1    -      -       -      -
    173F  ARG      4.8     1.2    +      -       -      -
    176F  ILE      3.7     4.2    +      -       -      +
    177F  TYR*     3.5    27.8    -      -       +      +
    178F  ALA      2.9    24.4    +      -       -      -
    195F  GLY      3.8     0.8    +      -       -      -
    196F  TYR*     1.3    72.4    -      -       -      +
    198F  THR*     1.3    59.5    +      -       -      +
    199F  PHE*     4.6     2.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 198 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62F  ARG*     2.8    35.9    +      -       -      +
    178F  ALA*     3.2    10.5    +      -       +      +
    180F  THR*     4.0    17.3    -      -       +      -
    181F  ASP      5.1     0.7    -      -       -      +
    188F  LYS*     4.1    21.2    -      -       +      +
    191F  ALA*     3.5    18.6    -      -       +      +
    192F  ASP*     5.2     1.4    +      -       -      -
    196F  TYR      3.2    14.7    +      -       -      -
    197F  GLU*     1.3    72.6    +      -       -      +
    199F  PHE*     1.3    71.2    -      -       -      +
    200F  VAL*     5.6     3.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 199 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59F  GLU*     3.6    24.5    -      -       +      -
     62F  ARG*     3.9    26.9    -      -       -      +
     63F  ILE*     3.5    34.5    -      -       +      -
     66F  CYS*     3.7    30.3    -      -       +      -
    177F  TYR*     4.6     9.4    -      +       +      -
    178F  ALA      2.8    10.1    +      -       -      +
    179F  THR*     3.7    18.2    -      -       -      +
    180F  THR      2.9    26.7    +      -       -      +
    197F  GLU*     4.6     4.5    -      -       +      -
    198F  THR*     1.3    82.6    -      -       -      +
    200F  VAL*     1.3    64.8    +      -       -      +
    214F  PRO*     3.7    19.5    -      -       +      -
    218F  LEU*     3.9    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 200 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59F  GLU*     2.8    21.9    +      -       -      +
     62F  ARG*     6.3     0.2    -      -       -      +
    179F  THR*     4.8     0.7    -      -       -      -
    180F  THR      3.3     2.0    -      -       -      -
    181F  ASP      5.4     0.2    -      -       -      +
    182F  LYS*     3.7    41.3    -      -       +      +
    188F  LYS*     6.4     0.2    -      -       -      -
    198F  THR*     5.6     3.8    -      -       +      +
    199F  PHE*     1.3    78.1    -      -       -      +
    201F  ILE*     1.3    77.4    +      -       -      +
    202F  PRO*     3.4    14.5    -      -       +      +
    214F  PRO*     3.4    24.9    -      -       -      +
----------------------------------------------------------
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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