1YSA

THE GCN4 BASIC REGION LEUCINE ZIPPER BINDS DNA AS A DIMER OF UNINTERRUPTED ALPHA HELICES: CRYSTAL STRUCTURE OF THE PROTEIN-DNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The GCN4 basic region leucine zipper binds DNA as a dimer of uninterrupted alpha helices: crystal structure of the protein-DNA complex.

Ellenberger, T.E.Brandl, C.J.Struhl, K.Harrison, S.C.

(1992) Cell 71: 1223-1237


  • PubMed Abstract: 
  • The yeast transcriptional activator GCN4 is 1 of over 30 identified eukaryotic proteins containing the basic region leucine zipper (bZIP) DNA-binding motif. We have determined the crystal structure of the GCN4 bZIP element complexed with DNA at 2.9 A ...

    The yeast transcriptional activator GCN4 is 1 of over 30 identified eukaryotic proteins containing the basic region leucine zipper (bZIP) DNA-binding motif. We have determined the crystal structure of the GCN4 bZIP element complexed with DNA at 2.9 A resolution. The bZIP dimer is a pair of continuous alpha helices that form a parallel coiled coil over their carboxy-terminal 30 residues and gradually diverge toward their amino termini to pass through the major groove of the DNA-binding site. The coiled-coil dimerization interface is oriented almost perpendicular to the DNA axis, giving the complex the appearance of the letter T. There are no kinks or sharp bends in either bZIP monomer. Numerous contacts to DNA bases and phosphate oxygens are made by basic region residues that are conserved in the bZIP protein family. The details of the bZIP dimer interaction with DNA can explain recognition of the AP-1 site by the GCN4 protein.


    Related Citations: 
    • X-Ray Structure of the GCN4 Leucine Zipper, a Two-Stranded, Parallel Coiled Coil
      O'Shea, E.K.,Klemm, J.D.,Kim, P.S.,Alber, T.
      (1991) Science 254: 539


    Organizational Affiliation

    Harvard University, Department of Biochemistry and Molecular Biology, Cambridge, Massachusetts 02138.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (GCN4)
C, D
58Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: GCN4 (AAS3, ARG9)
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P03069
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*TP*CP*CP*TP*AP*TP*GP*AP*CP*TP*CP*AP*TP*CP*CP*A P*GP*TP*T)-3')A20N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*AP*AP*CP*TP*GP*GP*AP*TP*GP*AP*GP*TP*CP*AP*TP*A P*GP*GP*A)-3')B20N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.130α = 90.00
b = 88.540β = 90.00
c = 59.240γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance