Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 12.14 kDa 
• Atom Count: 858 
• Residue Count: 99 
• Unique protein chains: 1

1ZIM

GCN4-LEUCINE ZIPPER CORE MUTANT ASN16GLN IN THE TRIMERIC STATE

• DOI: 10.2210/pdb1ZIM/pdb

• Classification: LEUCINE ZIPPER
• Organism(s): Saccharomyces cerevisiae
• Mutation(s): Yes 


• Deposited: 1996-10-30 Released: 1997-07-07 
• Deposition Author(s): Gonzalez Junior, L., Woolfson, D.N., Alber, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.178 

Literature

Buried polar residues and structural specificity in the GCN4 leucine zipper.

Gonzalez Jr., L., Woolfson, D.N., Alber, T.

(1996) Nat Struct Biol 3: 1011-1018

• PubMed: 8946854 
• DOI: 10.1038/nsb1296-1011
• Structures With Same Primary Citation


• PubMed Abstract: 
  

A conserved asparagine (Asn 16) buried in the interface of the GCN4 leucine zipper selectively favours the parallel, dimeric, coiled-coil structure. To test if other polar residues confer oligomerization specificity, the structural effects of Gln and Lys substitutions for Asn 16 were characterized. Like the wild-type peptide, the Asn 16Lys mutant formed exclusively dimers. In contrast, Gln 16, despite its chemical similarity to Asn, allowed the peptide to form both dimers and trimers. The Gln 16 side chain was accommodated by qualitatively different interactions in the dimer and trimer crystal structures. These findings demonstrate that the structural selectivity of polar residues results not only from the burial of polar atoms, but also depends on the complementarity of the side-chain stereochemistry with the surrounding structural environment.

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Related Citations: 

• An Engineered Allosteric Switch in Leucine-Zipper Oligomerization
  Gonzalez Junior, L., Plecs, J.J., Alber, T.
  (1996) Nat Struct Biol 3: 510

• 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, a Two-Stranded, Parallel Coiled Coil
  O'Shea, E.K., Klemm, J.D., Kim, P.S., Alber, T.
  (1991) Science 254: 539

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
GENERAL CONTROL PROTEIN GCN4	A, B, C	34	Saccharomyces cerevisiae	Mutation(s): 1
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: 2.00 Å
• R-Value Work: 0.178 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.24	α = 90
b = 46.61	β = 90
c = 50.83	γ = 90

Software Package:

Software Name	Purpose
TNT	refinement
R-AXIS	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-10-30 
• Released Date: 1997-07-07 
Deposition Author(s): Gonzalez Junior, L., Woolfson, D.N., Alber, T.

Revision History 

• Version 1.0: 1997-07-07
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance