1ZIM

GCN4-LEUCINE ZIPPER CORE MUTANT ASN16GLN IN THE TRIMERIC STATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.2 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.Mol.Biol. 3: 1011-1018

  • Primary Citation of Related Structures:  

  • 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 ...

    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.


    Related Citations: 
    • 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
    • An Engineered Allosteric Switch in Leucine-Zipper Oligomerization
      Gonzalez Junior, L.,Plecs, J.J.,Alber, T.
      (1996) Nat.Struct.Mol.Biol. 3: 510
    • 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
GENERAL CONTROL PROTEIN GCN4
A, B, C
34Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutations: Q17N
Gene Names: GCN4 (AAS3, ARG9)
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P03069
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
A, B, C
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 36.240α = 90.00
b = 46.610β = 90.00
c = 50.830γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
R-AXISdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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