1SWI

GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A COMPLEXED WITH BENZENE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.2 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.Mol.Biol. 3: 510-515


  • 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: 
    • X-Ray Structure of the GCN4 Leucine Zipper
      O'Shea, E.K.,Klemm, J.D.,Kim, P.S.,Alber, T.
      (1991) Science 254: 539
    • 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
    • Crystal Structure of an Isoleucine-Zipper Trimer
      Harbury, P.B.,Kim, P.S.,Alber, T.
      (1994) Nature 371: 80


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GCN4P1
A, B, C
33Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: GCN4 (AAS3, ARG9)
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P03069
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BNZ
Query on BNZ

Download SDF File 
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: 2.6 Å
  • R-Value Work: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 37.210α = 90.00
b = 46.410β = 90.00
c = 52.050γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
R-AXISdata reduction
X-PLORrefinement
TNTrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-11-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance