2ZTA | pdb_00002zta

X-RAY STRUCTURE OF THE GCN4 LEUCINE ZIPPER, A TWO-STRANDED, PARALLEL COILED COIL

• PDB DOI: https://doi.org/10.2210/pdb2ZTA/pdb

• Classification: LEUCINE ZIPPER
• Organism(s): Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 1991-07-05 Released: 1992-10-15 
• Deposition Author(s): O'Shea, E.K., Klemm, J.D., Kim, P.S., Alber, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 
  0.179 (Depositor) 

Literature

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: 539-544

• PubMed: 1948029 
• DOI: https://doi.org/10.1126/science.1948029
• Primary Citation Related Structures: 
  2ZTA


• PubMed Abstract: 
  

  The x-ray crystal structure of a peptide corresponding to the leucine zipper of the yeast transcriptional activator GCN4 has been determined at 1.8 angstrom resolution. The peptide forms a parallel, two-stranded coiled coil of alpha helices packed as in the "knobs-into-holes" model proposed by Crick in 1953. Contacts between the helices include ion pairs and an extensive hydrophobic interface that contains a distinctive hydrogen bond. The conserved leucines, like the residues in the alternate hydrophobic repeat, make side-to-side interactions (as in a handshake) in every other layer of the dimer interface. The crystal structure of the GCN4 leucine zipper suggests a key role for the leucine repeat, but also shows how other features of the coiled coil contribute to dimer formation.

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Organizational Affiliation: 
• Howard Hughes Medical Institute, Cambridge, MA 02142.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 8.06 kDa 
• Atom Count: 576 
• Modeled Residue Count: 64 
• Deposited Residue Count: 68 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GCN4 LEUCINE ZIPPER	A, B	34	Saccharomyces cerevisiae	Mutation(s): 0
UniProt
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P03069  Go to UniProtKB:  P03069

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work:  0.179 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 101.63	α = 90
b = 30.35	β = 94.7
c = 21.86	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1992-10-15 
Deposition Author(s): O'Shea, E.K., Klemm, J.D., Kim, P.S., Alber, T.

Revision History  

• Version 1.0: 1992-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-09
  Changes: Structure summary