Contacts of the strand formed by residues 46 - 52 (chain A) in PDB entry 1ZRC


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 SER 46 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  ILE*     4.9     1.1    -      -       -      -
     45A  GLY*     1.3    73.8    -      -       -      -
     47A  VAL*     1.3    57.8    +      -       -      +
     64A  LEU      3.4     4.9    -      -       -      -
     65A  ASN*     3.1    26.5    -      -       -      -
     89A  LYS*     2.6    61.3    +      -       -      +
     90A  THR*     2.9    19.0    +      -       -      +
     92A  CYS*     3.4     7.9    -      -       -      -
    155A  ASP*     5.7     2.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  LEU*     4.3    12.1    -      -       +      -
     42A  ILE*     3.7    20.4    -      -       +      -
     46A  SER*     1.3    78.7    -      -       -      +
     48A  ALA*     1.3    63.3    +      -       -      +
     63A  TYR*     3.3     9.5    -      -       -      +
     64A  LEU*     2.8    56.9    +      -       +      +
     70A  ILE*     4.0    11.2    -      -       +      -
     86A  VAL*     3.6    26.2    -      -       +      -
     87A  ARG      3.6     8.3    -      -       -      +
     88A  ALA*     4.3     4.5    -      -       -      -
     89A  LYS*     3.8     5.9    -      -       -      +
     92A  CYS*     4.0    13.7    -      -       -      -
     94A  VAL*     5.6     0.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  VAL*     1.3    74.6    -      -       -      +
     49A  VAL*     1.3    63.9    +      -       -      +
     50A  LEU*     3.7    13.4    +      -       +      +
     60A  ILE*     5.2     7.0    -      -       +      -
     62A  SER      3.6     5.8    -      -       -      +
     63A  TYR*     4.0    20.6    -      -       +      -
     85A  TRP      3.7     0.5    -      -       -      +
     86A  VAL*     3.2     5.1    -      -       -      -
     87A  ARG*     2.8    42.7    +      -       +      +
     89A  LYS*     4.3     6.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  VAL*     4.8     0.2    -      -       +      -
     48A  ALA*     1.3    71.9    -      -       -      +
     50A  LEU*     1.3    62.0    +      -       -      +
     60A  ILE*     3.8     1.4    -      -       -      +
     61A  LEU*     2.9    30.2    +      -       +      +
     62A  SER      2.9    19.5    +      -       -      +
     64A  LEU*     3.6    36.1    -      -       +      -
     84A  ALA*     4.1     9.9    -      -       +      -
     85A  TRP      3.4     4.3    -      -       -      +
     86A  VAL*     4.2    10.1    -      -       +      -
    210A  CMP      3.3    55.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  ALA*     4.5    13.7    -      -       +      +
     49A  VAL*     1.3    75.1    -      -       -      +
     51A  ILE*     1.3    68.0    +      -       -      +
     52A  LYS*     4.5     5.8    -      -       +      -
     58A  GLU*     3.5    24.5    -      -       +      +
     59A  MET      3.2    18.4    -      -       -      +
     60A  ILE*     4.1    16.4    -      -       +      -
     61A  LEU*     4.3     1.3    -      -       -      +
     84A  ALA*     3.3     2.8    -      -       -      +
     85A  TRP*     2.8    65.8    +      -       +      +
     87A  ARG*     3.4    38.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  GLN*     3.9    12.1    -      -       -      +
     50A  LEU*     1.3    73.1    -      -       -      +
     52A  LYS*     1.3    64.1    +      -       -      +
     58A  GLU*     3.6     1.6    -      -       -      -
     59A  MET*     2.9    45.6    +      -       +      +
     61A  LEU*     4.0    31.2    -      -       +      -
     83A  SER      3.7    10.3    -      -       -      +
     84A  ALA*     3.5    25.8    -      -       +      -
    128B  SER*     4.2     6.5    -      -       -      +
    129B  GLU*     5.7     1.1    -      -       -      -
    131B  VAL      5.0     0.2    -      -       -      -
    132B  GLY*     3.9    31.9    -      -       -      +
    136B  PHE*     3.4     8.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  GLN*     3.8    15.4    +      -       -      +
     50A  LEU*     4.5     3.1    -      -       +      -
     51A  ILE*     1.3    78.6    -      -       -      +
     53A  ASP*     1.3    67.4    +      -       -      +
     56A  GLY*     4.0    21.5    +      -       -      +
     57A  LYS      3.3     6.5    -      -       -      +
     58A  GLU*     3.1    31.8    +      -       +      +
     85A  TRP*     3.4    46.2    -      -       +      +
     87A  ARG*     4.7     6.0    -      -       -      +
    136B  PHE*     4.0     8.5    -      -       -      -
----------------------------------------------------------
 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