7CPC

His-Mediated Reversible Self-assembly of Ferritin Nanocage with Ni binding


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.199 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

His-Mediated Reversible Self-Assembly of Ferritin Nanocages through Two Different Switches for Encapsulation of Cargo Molecules.

Gu, C.Zhang, T.Lv, C.Liu, Y.Wang, Y.Zhao, G.

(2020) ACS Nano 

  • DOI: https://doi.org/10.1021/acsnano.0c06670
  • Primary Citation of Related Structures:  
    7CPC, 7CPI

  • PubMed Abstract: 

    Protein nanocages represent a class of nanovehicles for a variety of applications. However, precise manipulation of self-assembly behavior of these protein nanocages in response to multiple external stimuli for custom-tailored applications remains challenging. Herein, we established a simple but effective strategy for controlling protein nanocage self-assembly that combines a dual property of His motifs (their significantly pH-dependent protonation state and their capacity to coordinate with transition metals) with its high symmetry. With this strategy, we enabled two different ferritin nanocages to disassemble into protein tetramers under neutral solution by introducing His 6 motifs at the 4-fold channel interfaces. Notably, these tetramers are able to self-assemble into ferritin-like protein nanocages in response to multiple external stimuli such as transition metal ions and pH, and vice versa , indicative of a reversible self-assembly process. Furthermore, such His-mediated reversible protein self-assembly has been explored for encapsulation of bioactive cargo molecules within these reconstituted protein nanocages with higher loading efficiency under milder conditions as compared to the reported acid denaturation encapsulation method for ferritin.


  • Organizational Affiliation

    College of Food Science & Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferritin169Penaeus japonicusMutation(s): 1 
EC: 1.16.3.1
UniProt
Find proteins for T2B7E1 (Penaeus japonicus)
Explore T2B7E1 
Go to UniProtKB:  T2B7E1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupT2B7E1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NI
Query on NI

Download Ideal Coordinates CCD File 
G [auth B]
I [auth A]
J [auth A]
L [auth C]
O [auth E]
G [auth B],
I [auth A],
J [auth A],
L [auth C],
O [auth E],
P [auth E]
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
FE
Query on FE

Download Ideal Coordinates CCD File 
H [auth B]
K [auth A]
M [auth C]
N [auth D]
Q [auth E]
H [auth B],
K [auth A],
M [auth C],
N [auth D],
Q [auth E],
R [auth F]
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.199 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 125.845α = 90
b = 125.845β = 90
c = 176.41γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHENIXphasing
Cootmodel building

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31730069
National Natural Science Foundation of China (NSFC)China31972018

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-16
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Database references, Refinement description