Download MendeleyObservation 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
- PubMed: 39815632
- 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.
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States.
Organizational Affiliation:
