Contacts of the strand formed by residues 16 - 21 (chain A) in PDB entry 1P8Z


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 LEU 16 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  GLY*     3.1    12.3    +      -       -      -
     15A  GLY*     1.3    84.7    -      -       -      +
     17A  VAL*     1.3    58.8    +      -       -      +
     18A  LYS*     2.7    35.4    +      -       +      +
     30A  VAL*     4.4    17.5    -      -       +      -
     31A  PHE*     3.2    24.0    -      -       -      +
     32A  PRO*     4.1     9.4    -      -       +      -
     33A  SER*     3.5     5.4    +      -       -      -
    336A  LYS*     6.1     5.2    -      -       +      -
    380A  ATP      2.9    41.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 17 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  CYS*     4.0    26.7    -      -       -      -
     11A  ASP      3.6     5.2    -      -       -      +
     12A  ASN*     4.1    13.5    -      -       +      +
     13A  GLY      4.5     0.2    -      -       -      +
     16A  LEU*     1.3    73.8    -      -       -      +
     18A  LYS*     1.3    66.1    +      -       -      +
     19A  ALA*     4.4     2.0    -      -       +      -
     29A  ALA      3.6     1.2    -      -       -      +
     30A  VAL*     3.3     6.9    -      -       -      +
     31A  PHE*     2.8    58.7    +      -       +      +
     33A  SER*     3.4    17.7    +      -       -      +
     71A  ILE*     5.8     0.7    -      -       +      -
     82A  MET*     5.3     0.2    -      -       +      -
     85A  ILE*     3.5    27.8    -      -       +      -
     89A  THR*     4.1     4.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 18 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  CYS*     3.6     0.3    -      -       -      -
     11A  ASP*     2.8    61.2    +      -       +      +
     13A  GLY      4.0     2.0    -      -       -      +
     16A  LEU*     2.7    36.5    +      -       +      +
     17A  VAL*     1.3    75.8    -      -       -      +
     19A  ALA*     1.3    61.2    +      -       -      +
     27A  PRO*     4.1     6.1    -      -       +      -
     29A  ALA      3.5     2.7    -      -       -      -
     30A  VAL*     4.2     8.7    -      -       +      -
    336A  LYS      4.7     9.4    -      -       -      +
    337A  TYR*     3.8    31.0    -      -       +      +
    340A  TRP*     3.5    20.7    -      -       +      -
    380A  ATP      2.9    36.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 19 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  VAL      3.4     8.7    -      -       -      +
     10A  CYS*     4.4     6.3    -      -       +      -
     17A  VAL*     4.1     4.9    -      -       +      -
     18A  LYS*     1.3    75.5    -      -       -      +
     20A  GLY*     1.3    59.3    +      -       -      +
     27A  PRO*     3.8     2.3    -      -       -      +
     28A  ARG*     2.9     5.3    +      -       -      +
     29A  ALA*     2.8    50.5    +      -       +      +
     31A  PHE*     5.3     1.1    -      -       +      -
     89A  THR*     3.7    29.4    -      -       +      -
     94A  LEU*     4.2     9.2    -      -       +      -
    340A  TRP*     3.7     4.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 20 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  LEU*     3.6    10.7    -      -       -      +
      9A  VAL      3.1    28.1    +      -       -      -
     19A  ALA*     1.3    77.4    -      -       -      +
     21A  PHE*     1.3    67.4    -      -       -      -
     28A  ARG*     4.0     8.1    -      -       -      -
     94A  LEU*     3.9    15.1    -      -       -      +
    340A  TRP*     3.4    14.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 21 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  THR*     4.4    17.3    -      -       +      -
      7A  ALA      3.8     5.2    -      -       -      +
      8A  LEU*     3.4    30.3    -      -       +      -
     20A  GLY*     1.3    71.8    -      -       -      -
     22A  ALA*     1.3    69.1    +      -       -      +
     24A  ASP*     2.9    34.7    +      -       -      +
     28A  ARG*     3.0    43.5    -      -       -      +
     94A  LEU*     4.0    24.9    -      -       +      -
     96A  VAL*     3.9    25.4    -      -       +      -
    101A  HIS*     5.0     5.4    -      +       -      -
    340A  TRP*     3.7     9.4    -      -       -      -
    150G  LYS*     5.6     1.8    -      -       -      +
----------------------------------------------------------
 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