1GCL

GCN4 LEUCINE ZIPPER CORE MUTANT P-LI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

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: 1401-1407


  • PubMed Abstract: 
  • Coiled-coil sequences in proteins consist of heptad repeats containing two characteristic hydrophobic positions. The role of these buried hydrophobic residues in determining the structures of coiled coils was investigated by studying mutants of the G ...

    Coiled-coil sequences in proteins consist of heptad repeats containing two characteristic hydrophobic positions. The role of these buried hydrophobic residues in determining the structures of coiled coils was investigated by studying mutants of the GCN4 leucine zipper. When sets of buried residues were altered, two-, three-, and four-helix structures were formed. The x-ray crystal structure of the tetramer revealed a parallel, four-stranded coiled coil. In the tetramer conformation, the local packing geometry of the two hydrophobic positions in the heptad repeat is reversed relative to that in the dimer. These studies demonstrate that conserved, buried residues in the GCN4 leucine zipper direct dimer formation. In contrast to proposals that the pattern of hydrophobic and polar amino acids in a protein sequence is sufficient to determine three-dimensional structure, the shapes of buried side chains in coiled coils are essential determinants of the global fold.


    Related Citations: 
    • X-Ray Structure of the GCN4 Leucine Zipper, a Two-Stranded, Parallel Coiled Coil
      Shea, E.K.,Klemm, J.D.,Kim, P.S.,Alber, T.
      (1991) Science 254: 539
    • Evidence that the Leucine Zipper is a Coiled Coil
      Shea, E.K.,Rutkowski, R.,Kim, P.S.
      (1989) Science 243: 538


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GCN4
A, B, C, D
34Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 8 
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, D
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 47.432α = 90.00
b = 48.634β = 90.00
c = 51.765γ = 90.00
Software Package:
Software NamePurpose
R-AXISdata reduction
X-PLORrefinement
TNTrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-06-03
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2013-04-24
    Type: Other