1ZIL

GCN4-LEUCINE ZIPPER CORE MUTANT ASN16GLN IN THE DIMERIC STATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Work: 0.174 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


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

  • DOI: https://doi.org/10.1038/nsb1296-1011
  • Primary Citation of Related Structures:  
    1ZIK, 1ZIL, 1ZIM

  • 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.


  • Organizational Affiliation

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


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GENERAL CONTROL PROTEIN GCN4
A, B
33Saccharomyces cerevisiaeMutation(s): 1 
UniProt
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P03069 
Go to UniProtKB:  P03069
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03069
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Work: 0.174 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.25α = 90
b = 30.79β = 95.57
c = 22.02γ = 90
Software Package:
Software NamePurpose
TNTrefinement
R-AXISdata reduction
R-AXISdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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
  • Version 1.3: 2021-11-03
    Changes: Database references, Other
  • Version 1.4: 2024-02-14
    Changes: Data collection