1SWI

GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A COMPLEXED WITH BENZENE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

An engineered allosteric switch in leucine-zipper oligomerization.

Gonzalez Jr., L.Plecs, J.J.Alber, T.

(1996) Nat Struct Biol 3: 510-515

  • DOI: 10.1038/nsb0696-510
  • Primary Citation of Related Structures:  
    1SWI

  • PubMed Abstract: 
  • Controversy remains about the role of core side-chain packing in specifying protein structure. To investigate the influence of core packing on the oligomeric structure of a coiled coil, we engineered a GCN4 leucine zipper mutant that switches from tw ...

    Controversy remains about the role of core side-chain packing in specifying protein structure. To investigate the influence of core packing on the oligomeric structure of a coiled coil, we engineered a GCN4 leucine zipper mutant that switches from two to three strands upon binding the hydrophobic ligands cyclohexane and benzene. In solution these ligands increased the apparent thermal stability and the oligomerization order of the mutant leucine zipper. The crystal structure of the peptide-benzene complex shows a single benzene molecule bound at the engineered site in the core of the trimer. These results indicate that coiled coils are well-suited to function as molecular switches and emphasize that core packing is an important determinant of oligomerization specificity.


    Related Citations: 
    • Crystal Structure of an Isoleucine-Zipper Trimer
      Harbury, P.B., Kim, P.S., Alber, T.
      (1994) Nature 371: 80
    • A Switch between Two-, Three-, and Four-Stranded Coiled Coils in GCN4 Leucine Zipper Mutants
      Harbury, P.B., Zhang, T., Kim, P.S., Alber, T.
      (1993) Science 262: 1401
    • X-Ray Structure of the GCN4 Leucine Zipper
      O'Shea, E.K., Klemm, J.D., Kim, P.S., Alber, T.
      (1991) Science 254: 539

    Organizational Affiliation

    Department of Molecular and cell Biology, University of California, Berkeley,94720-3206, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GCN4P1ABC33Saccharomyces cerevisiaeMutation(s): 1 
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P03069 
Go to UniProtKB:  P03069
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BNZ
Query on BNZ

Download CCD File 
B
BENZENE
C6 H6
UHOVQNZJYSORNB-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
BNZKd :  800000   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.21α = 90
b = 46.41β = 90
c = 52.05γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement
TNTrefinement
X-PLORmodel building
R-AXISdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-11-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-17
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection