Contacts of the strand formed by residues 197 - 200 (chain D) 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 D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62D  ARG*     2.8    34.5    +      -       -      +
     65D  LYS*     5.9     1.4    +      -       -      -
     66D  CYS*     3.7    30.0    -      -       -      -
    173D  ARG*     4.9     1.4    +      -       -      +
    176D  ILE      3.7     5.1    +      -       -      +
    177D  TYR*     3.5    22.3    -      -       +      +
    178D  ALA      2.9    25.5    +      -       -      -
    195D  GLY      3.9     1.0    +      -       -      -
    196D  TYR*     1.3    73.4    -      -       -      +
    198D  THR*     1.3    60.5    +      -       -      +
    199D  PHE*     4.2     6.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 198 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62D  ARG*     2.8    37.1    +      -       -      +
    178D  ALA*     3.3     9.1    +      -       +      +
    180D  THR*     4.5     6.1    -      -       +      -
    181D  ASP      5.2     0.9    -      -       -      +
    188D  LYS*     3.4    37.5    +      -       +      +
    191D  ALA*     4.0    14.7    -      -       -      +
    192D  ASP*     4.4     2.6    +      -       -      -
    196D  TYR      3.4    12.9    +      -       -      -
    197D  GLU*     1.3    75.7    +      -       -      +
    199D  PHE*     1.3    80.3    +      -       -      +
    200D  VAL*     5.3     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 199 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59D  GLU*     3.7    22.0    -      -       +      -
     62D  ARG*     3.9    21.3    -      -       +      +
     63D  ILE*     3.6    41.3    -      -       +      -
     66D  CYS*     3.8    29.4    -      -       +      -
    177D  TYR*     4.7     6.3    -      +       +      -
    178D  ALA      2.9     7.6    +      -       -      -
    179D  THR*     3.7    17.7    -      -       +      +
    180D  THR      2.9    25.7    +      -       -      +
    197D  GLU*     4.2    11.0    -      -       +      -
    198D  THR*     1.3    83.0    -      -       -      +
    200D  VAL*     1.3    64.6    +      -       -      +
    214D  PRO*     3.8    15.0    -      -       +      -
    218D  LEU*     3.8    28.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 200 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59D  GLU*     2.9    19.6    +      -       -      +
     62D  ARG*     6.0     1.8    -      -       -      +
    179D  THR*     4.7     0.9    -      -       -      -
    180D  THR      3.3     3.1    -      -       -      +
    181D  ASP      5.2     0.4    -      -       -      +
    182D  LYS*     3.8    39.0    -      -       +      -
    188D  LYS*     6.0     1.1    -      -       -      +
    198D  THR*     5.3     5.2    -      -       +      -
    199D  PHE*     1.3    77.9    -      -       -      +
    201D  ILE*     1.3    78.0    +      -       -      +
    202D  PRO*     3.4    18.8    -      -       +      +
    214D  PRO*     3.6    20.1    -      -       -      +
----------------------------------------------------------
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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