1C94

REVERSING THE SEQUENCE OF THE GCN4 LEUCINE ZIPPER DOES NOT AFFECT ITS FOLD.

• PDB DOI: https://doi.org/10.2210/pdb1C94/pdb

• Classification: GENE REGULATION
• Mutation(s): No 


• Deposited: 1999-07-30 Released: 2000-03-22 
• Deposition Author(s): Mittl, P.R.E., Deillon, C.A., Sargent, D., Liu, N., Klauser, S., Thomas, R.M., Gutte, B., Gruetter, M.G.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.08 Å
• R-Value Free: 0.281 
• R-Value Work: 0.180 
• R-Value Observed: 0.180 

Literature

The retro-GCN4 leucine zipper sequence forms a stable three-dimensional structure.

Mittl, P.R., Deillon, C., Sargent, D., Liu, N., Klauser, S., Thomas, R.M., Gutte, B., Grutter, M.G.

(2000) Proc Natl Acad Sci U S A 97: 2562-2566

• PubMed: 10716989 
• DOI: https://doi.org/10.1073/pnas.97.6.2562
• Primary Citation of Related Structures:  
  1C94


• PubMed Abstract: 
  

  The question of whether a protein whose natural sequence is inverted adopts a stable fold is still under debate. We have determined the 2. 1-A crystal structure of the retro-GCN4 leucine zipper. In contrast to the two-stranded helical coiled-coil GCN4 leucine zipper, the retro-leucine zipper formed a very stable, parallel four-helix bundle, which now lends itself to further structural and functional studies.

---

Organizational Affiliation: 

Biochemisches Institut der Universität Zürich, Winterthurer Strasse 190, CH-8057 Zürich, Switzerland.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 8.93 kDa 
• Atom Count: 669 
• Modelled Residue Count: 74 
• Deposited Residue Count: 76 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RETRO-GCN4 LEUCINE ZIPPER	A, B	38	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.08 Å
• R-Value Free: 0.281 
• R-Value Work: 0.180 
• R-Value Observed: 0.180 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 34.11	α = 90
b = 34.09	β = 90
c = 56.44	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement
CNS	refinement
AMoRE	phasing
REFMAC	refinement
MAR345	data collection
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-03-22 
Deposition Author(s): Mittl, P.R.E., Deillon, C.A., Sargent, D., Liu, N., Klauser, S., Thomas, R.M., Gutte, B., Gruetter, M.G.

Revision History  

• Version 1.0: 2000-03-22
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description
• Version 1.4: 2019-07-24
  Changes: Data collection, Refinement description
• Version 1.5: 2019-08-14
  Changes: Data collection
• Version 1.6: 2024-02-07
  Changes: Data collection, Database references