Contacts of the strand formed by residues 216 - 220 (chain K) in PDB entry 3STJ


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 GLY 216 (chain K).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176K  ILE      3.6     0.2    -      -       -      +
    177K  GLN*     3.3     9.0    -      -       -      +
    178K  THR*     3.0    41.7    +      -       -      +
    180K  ALA      5.4     1.1    +      -       -      -
    182K  ILE*     4.3    12.1    -      -       -      -
    204K  ALA      3.7     7.0    -      -       -      -
    205K  ILE*     4.0    10.3    -      -       -      -
    214K  GLY      3.9     0.2    -      -       -      -
    215K  ILE*     1.3    73.1    -      -       -      +
    217K  PHE*     1.3    64.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 217 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150J  LEU*     4.4    10.1    -      -       +      -
    164K  ARG*     4.2     7.0    -      -       +      -
    167K  LEU*     3.7    24.2    -      -       +      -
    169K  LEU*     4.2    13.0    -      -       +      -
    175K  PHE*     3.7    39.7    -      +       +      -
    176K  ILE      3.3     5.6    -      -       -      -
    177K  GLN*     3.5    27.8    -      -       +      -
    178K  THR*     5.7     0.2    -      -       -      -
    182K  ILE*     4.8     2.6    -      -       -      +
    202K  ASN*     3.7     4.7    +      -       -      +
    203K  THR*     2.8    28.2    +      -       -      -
    204K  ALA*     2.7    34.0    +      -       +      +
    205K  ILE*     4.3     2.0    -      -       -      -
    206K  LEU*     3.9    23.3    -      -       +      -
    215K  ILE*     3.8    24.5    -      -       +      -
    216K  GLY*     1.3    77.9    -      -       -      -
    218K  ALA*     1.4    55.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 218 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175K  PHE*     3.6     8.1    -      -       -      -
    176K  ILE*     3.0    32.1    +      -       +      +
    178K  THR*     5.7     0.7    -      -       +      -
    191K  LEU*     3.8    21.5    -      -       +      -
    200K  GLY*     4.3     0.9    -      -       -      -
    201K  ILE      3.1    27.8    -      -       -      +
    202K  ASN*     3.7    15.9    -      -       -      +
    203K  THR*     4.0     1.1    -      -       -      +
    217K  PHE*     1.4    73.4    -      -       -      +
    219K  ILE*     1.3    62.9    +      -       -      +
    220K  PRO      3.4     0.5    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 219 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80K  ASN*     3.7    17.3    -      -       -      +
    111K  SER*     3.4    25.8    -      -       -      +
    112K  ASP      3.7     5.2    -      -       -      +
    113K  ILE*     3.4    30.5    -      -       +      -
    175K  PHE*     4.3    14.4    -      -       +      -
    200K  GLY*     3.0     4.0    -      -       -      -
    201K  ILE*     2.8    36.9    +      -       +      +
    203K  THR*     3.2    24.4    +      -       +      +
    218K  ALA*     1.3    69.5    -      -       -      +
    220K  PRO*     1.3    82.6    -      -       +      +
    221K  SER*     4.4     0.3    -      -       -      -
    223K  MET*     4.0    19.5    -      -       +      -
    224K  ALA*     4.1     2.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 220 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132K  SER*     3.5    21.1    -      -       -      +
    174K  ASN*     3.0    44.4    -      -       +      +
    176K  ILE*     3.6    20.9    -      -       +      -
    218K  ALA      3.4     4.7    -      -       -      +
    219K  ILE*     1.3    90.0    -      -       +      +
    221K  SER*     1.3    60.0    +      -       -      +
    222K  ASN*     3.2     1.3    -      -       +      +
    223K  MET*     3.0    35.1    +      -       +      +
    224K  ALA      3.0     9.9    +      -       -      -
----------------------------------------------------------
 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