Biological Assembly 1  

 3D View: Structure | Electron Density

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

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

Macromolecule Content

• Total Structure Weight: 22439.83 
• Atom Count: 1555 
• Residue Count: 191 
• Unique protein chains: 1

4UOS

Thermodynamic hyperstability in parametrically designed helical bundles

• DOI: 10.2210/pdb4UOS/pdb

• Classification: DE NOVO PROTEIN
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2014-06-09 Released: 2014-11-05 
• Deposition Author(s): Oberdorfer, G., Huang, P., Pei, X.Y., Xu, C., Gonen, T., Nannenga, B., DiMaio, D., Rogers, J., Luisi, B.F., Baker, D.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.63 Å
• R-Value Free: 0.206 
• R-Value Work: 0.193 

Literature

High Thermodynamic Stability of Parametrically Designed Helical Bundles

Huang, P., Oberdorfer, G., Xu, C., Pei, X.Y., Nannenga, B.L., Rogers, J.M., Dimaio, F., Gonen, T., Luisi, B., Baker, D.

(2014) Science 346: 481

• PubMed: 25342806 
• DOI: 10.1126/science.1257481
• Primary Citation of Related Structures:  
  4UOT, 4TQL


• PubMed Abstract: 
  

We describe a procedure for designing proteins with backbones produced by varying the parameters in the Crick coiled coil-generating equations. Combinatorial design calculations identify low-energy sequences for alternative helix supercoil arrangements, and the helices in the lowest-energy arrangements are connected by loop building. We design an antiparallel monomeric untwisted three-helix bundle with 80-residue helices, an antiparallel monomeric right-handed four-helix bundle, and a pentameric parallel left-handed five-helix bundle. The designed proteins are extremely stable (extrapolated ΔGfold > 60 kilocalories per mole), and their crystal structures are close to those of the design models with nearly identical core packing between the helices. The approach enables the custom design of hyperstable proteins with fine-tuned geometries for a wide range of applications.

---

Organizational Affiliation: 

Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
DESIGNED HELICAL BUNDLE	A	191	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.63 Å
• R-Value Free: 0.206 
• R-Value Work: 0.193 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 29.460	α = 90.00
b = 72.150	β = 92.90
c = 51.260	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
iMOSFLM	data reduction
ACORN	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-06-09 
• Released Date: 2014-11-05 
• Deposition Author(s): Oberdorfer, G., Huang, P., Pei, X.Y., Xu, C., Gonen, T., Nannenga, B., DiMaio, D., Rogers, J., Luisi, B.F., Baker, D.

Revision History 

• Version 1.0: 2014-11-05
  Type: Initial release
• Version 1.1: 2014-11-19
  Type: Database references
• Version 1.2: 2016-12-14
  Type: Data collection