Contacts of the strand formed by residues 211 - 216 (chain A) in PDB entry 1RI4


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 211 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199A  GLU*     3.1    37.5    +      -       +      +
    209A  VAL*     3.2    22.1    -      -       -      +
    210A  ARG*     1.3    80.7    -      -       +      +
    212A  TYR*     1.3    70.2    +      -       -      +
    224A  ILE*     3.3    35.9    -      -       +      +
    225A  GLU      3.2    15.3    -      -       -      +
    226A  TYR*     3.6    18.6    -      -       +      +
    227A  PHE*     4.0     0.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 212 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  HIS*     4.9     0.9    -      -       -      -
    175A  PRO*     3.5    30.7    -      -       -      +
    180A  ILE*     3.8     7.9    -      -       +      +
    196A  ILE*     3.6    27.6    -      -       +      -
    197A  GLU      2.9    22.2    -      -       -      +
    198A  LEU*     4.1    11.4    -      -       +      +
    199A  GLU*     5.4     0.2    -      -       -      -
    211A  GLU*     1.3    81.9    -      -       -      +
    213A  ARG*     1.3    67.4    +      -       -      +
    214A  PHE*     3.8    11.4    -      +       +      -
    223A  CYS      3.5     1.0    -      -       -      +
    224A  ILE*     3.5     6.6    -      -       -      +
    225A  GLU*     2.9    65.6    +      -       +      +
    226A  TYR      4.6     2.1    +      -       -      -
    227A  PHE*     3.6    43.7    -      +       -      -
    283A  ILE*     5.7     0.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 213 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195A  LYS*     3.3     2.3    -      -       -      +
    196A  ILE*     3.2     8.0    -      -       -      +
    197A  GLU*     2.8    53.4    +      -       +      +
    198A  LEU      5.6     2.5    -      -       -      +
    212A  TYR*     1.3    74.8    -      -       -      +
    214A  PHE*     1.3    59.2    +      -       -      +
    215A  THR*     5.0     0.8    +      -       -      +
    222A  ASN*     2.6    63.8    +      -       -      +
    223A  CYS      3.4     1.8    -      -       -      -
    224A  ILE*     3.0    35.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 214 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194A  TYR*     4.0    13.9    -      -       +      -
    195A  LYS      3.6     0.7    -      -       -      -
    196A  ILE*     3.7    20.9    -      -       +      -
    212A  TYR*     3.8     8.4    +      +       +      -
    213A  ARG*     1.3    71.7    -      -       -      +
    215A  THR*     1.3    74.9    +      -       -      +
    216A  LEU*     4.1    29.2    -      -       +      -
    220A  VAL*     3.7    25.0    -      -       +      +
    222A  ASN      3.3     1.0    +      -       -      -
    223A  CYS*     2.7    42.5    +      -       -      +
    225A  GLU*     3.6    33.2    -      -       +      -
    280A  VAL*     5.2     1.3    -      -       +      -
    283A  ILE*     4.3    19.1    -      -       +      -
    284A  TYR*     3.5    28.3    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 215 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193A  PHE      4.6     0.2    -      -       -      -
    194A  TYR*     3.1    12.0    -      -       -      +
    195A  LYS*     3.1    50.5    +      -       +      +
    213A  ARG*     5.0     1.2    +      -       -      +
    214A  PHE*     1.3    75.9    -      -       -      +
    216A  LEU*     1.3    67.6    +      -       -      +
    217A  LEU*     5.8     0.4    -      -       -      -
    220A  VAL*     3.6    11.4    -      -       -      +
    221A  ASN*     4.3     6.5    -      -       +      +
    222A  ASN*     2.9    27.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 216 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  THR*     5.6     4.7    -      -       +      -
     46A  ILE*     5.3    10.1    -      -       +      -
     50A  ASN*     6.2     1.8    -      -       -      +
    193A  PHE*     3.6    15.5    -      -       +      +
    194A  TYR*     4.3     3.1    -      -       +      -
    214A  PHE*     4.1    19.5    -      -       +      -
    215A  THR*     1.3    78.0    -      -       -      +
    217A  LEU*     1.3    70.8    +      -       +      +
    218A  ASP      3.2     0.3    +      -       -      -
    219A  SER*     2.9    40.3    +      -       -      +
    220A  VAL*     3.0    23.5    +      -       +      +
    221A  ASN*     4.9     1.9    -      -       -      +
    280A  VAL*     3.6    32.3    -      -       +      -
    284A  TYR*     5.3     3.6    -      -       +      +
----------------------------------------------------------
 Back to top of page


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