Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Octahedral - O  (3D View)
Global Stoichiometry: Homo 24-mer - A24 

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

Macromolecule Content

• Total Structure Weight: 20466.73 
• Atom Count: 1423 
• Residue Count: 172 
• Unique protein chains: 1

4DYX

Crystal Structure of the Cu-adduct of Human H-Ferritin variant 4His-delta C-star

• DOI: 10.2210/pdb4DYX/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): 4 


• Deposited: 2012-02-29 Released: 2013-01-23 
• Deposition Author(s): Tezcan, F.A., Huard, D.J.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.197 
• R-Value Work: 0.169 

Literature

Re-engineering protein interfaces yields copper-inducible ferritin cage assembly.

Huard, D.J., Kane, K.M., Tezcan, F.A.

(2013) Nat.Chem.Biol. 9: 169-176

• PubMed: 23340339 
• DOI: 10.1038/nchembio.1163
• Primary Citation of Related Structures:  
  4DZ0, 4DYZ, 4DYY


• PubMed Abstract: 
  

The ability to chemically control protein-protein interactions would allow the interrogation of dynamic cellular processes and lead to a better understanding and exploitation of self-assembling protein architectures. Here we introduce a new engineering strategy--reverse metal-templated interface redesign (rMeTIR)--that transforms a natural protein-protein interface into one that only engages in selective response to a metal ion. We have applied rMeTIR to render the self-assembly of the cage-like protein ferritin controllable by divalent copper binding, which has allowed the study of the structure and stability of the isolated ferritin monomer, the demonstration of the primary role of conserved hydrogen-bonding interactions in providing geometric specificity for cage assembly and the uniform chemical modification of the cage interior under physiological conditions. Notably, copper acts as a structural template for ferritin assembly in a manner that is highly reminiscent of RNA sequences that template virus capsid formation.

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Organizational Affiliation: 

Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Ferritin heavy chain	A	172	Homo sapiens	Mutation(s): 4  Gene Names: FTH1 (FTH, FTHL6) EC: 1.16.3.1
Find proteins for P02794 (Homo sapiens) Go to Gene View: FTH1 Go to UniProtKB:  P02794

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CA	A	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CU	A	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.197 
• R-Value Work: 0.169 
• Space Group: F 4 3 2

Unit Cell:

Length (Å)	Angle (°)
a = 179.268	α = 90.00
b = 179.268	β = 90.00
c = 179.268	γ = 90.00

Software Package:

Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
MOSFLM	data reduction
PDB_EXTRACT	data extraction
SCALA	data scaling
Blu-Ice	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-02-29 
• Released Date: 2013-01-23 
• Deposition Author(s): Tezcan, F.A., Huard, D.J.E.

Revision History 

• Version 1.0: 2013-01-23
  Type: Initial release
• Version 1.1: 2013-02-13
  Type: Database references
• Version 1.2: 2013-03-06
  Type: Database references