9BPK | pdb_00009bpk

Human light chain ferritin reacted with iron (3 Fe2+ to ferritin monomer ratio). Reconstruction of particles with no nanoparticle


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Observation of the Protein-Inorganic Interface of Ferritin by Cryo-Electron Microscopy.

Sen, S.Thaker, A.Haymaker, A.Williams, D.Chiu, P.L.Nannenga, B.L.

(2025) J Am Chem Soc 147: 3333-3340

  • DOI: https://doi.org/10.1021/jacs.4c13873
  • Primary Citation of Related Structures:  
    9BPI, 9BPJ, 9BPK, 9BQ5

  • PubMed Abstract: 

    Visualizing the structure of the protein-inorganic interface is critically important for a more complete understanding of biomineralization. Unfortunately, there are limited approaches for the direct and detailed study of biomolecules that interact with inorganic materials. Here, we use single-particle cryo-electron microscopy (cryo-EM) to study the protein-nanoparticle (NP) interactions of human light chain ferritin and visualize the high-resolution details of the protein-inorganic interface. In this work, we determined the 2.85 Å structure of human light chain ferritin bound to its native iron oxide NP substrate. The resulting cryo-EM maps confirmed and enhanced previously proposed interactions of the protein with the material along the B-helix and revealed new interaction at the C-terminus of light chain ferritin. This work sheds new light on the mechanisms of ferritin biomineralization and further demonstrates the application of cryo-EM for the study of protein-inorganic systems.


  • Organizational Affiliation
    • Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferritin light chain
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X
174Homo sapiensMutation(s): 0 
Gene Names: FTL
UniProt & NIH Common Fund Data Resources
Find proteins for P02792 (Homo sapiens)
Explore P02792 
Go to UniProtKB:  P02792
PHAROS:  P02792
GTEx:  ENSG00000087086 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02792
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (NSF, United States)United States1942084

Revision History  (Full details and data files)

  • Version 1.0: 2025-05-14
    Type: Initial release