2NRN

Self-assembly of coiled-coil tetramers in the 1.40 A structure of a leucine-zipper mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Literature

Self-assembly of coiled-coil tetramers in the 1.40 A structure of a leucine-zipper mutant.

Deng, Y.Zheng, Q.Liu, J.Cheng, C.S.Kallenbach, N.R.Lu, M.

(2007) Protein Sci 16: 323-328

  • DOI: https://doi.org/10.1110/ps.062590807
  • Primary Citation of Related Structures:  
    2NRN

  • PubMed Abstract: 

    The hydrophobic core of the GCN4 leucine-zipper dimerization domain is formed by a parallel helical association between nonpolar side chains at the a and d positions of the heptad repeat. Here we report a self-assembling coiled-coil array formed by the GCN4-pAe peptide that differs from the wild-type GCN4 leucine zipper by alanine substitutions at three charged e positions. GCN4-pAe is incompletely folded in normal solution conditions yet self-assembles into an antiparallel tetraplex in crystals by formation of unanticipated hydrophobic seams linking the last two heptads of two parallel double-stranded coiled coils. The GCN4-pAe tetramers in the lattice associate laterally through the identical interactions to those in the intramolecular dimer-dimer interface. The van der Waals packing interaction in the solid state controls extended supramolecular assembly of the protein, providing an unusual atomic scale view of a mesostructure.


  • Organizational Affiliation

    Department of Biochemistry, Weill Medical College of Cornell University, 1300 York Avenue, New York, NY 10021, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
General control protein GCN4
A, B, C, D
34Saccharomyces cerevisiaeMutation(s): 3 
Gene Names: GCN4AAS3ARG9
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: 1.40 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 20.117α = 90
b = 87.875β = 103.83
c = 35.509γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MAR345data collection
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2007-04-17 
  • Deposition Author(s): Liu, J., Lu, M.

Revision History  (Full details and data files)

  • Version 1.0: 2007-04-17
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.5: 2023-08-30
    Changes: Data collection, Refinement description