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Updated: Jul 17, 2026

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

Realizing a two-dimensional ordered array of ferritin molecules directly on a solid surface utilizing carbonaceous

Takuro Matsui¹, Nozomu Matsukawa, Kenji Iwahori

¹Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd. (Panasonic), 3-4 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0237, Japan.

Langmuir : the ACS Journal of Surfaces and Colloids

|February 7, 2007

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Researchers created ordered nanoparticle arrays using genetically modified ferritin proteins. This technique enables the fabrication of two-dimensional hexagonally close-packed (2D-HCP) arrays for potential use in advanced memory devices.

Area of Science:

Biomaterials Engineering
Nanotechnology
Surface Chemistry

Background:

Ferritin's natural protein cage structure can encapsulate nanoparticles.
Controlling nanoparticle assembly on substrates is challenging due to nonspecific interactions.

Purpose of the Study:

To develop a method for fabricating ordered two-dimensional arrays of ferritin-encapsulated nanoparticles.
To enable the application of these arrays in nanotechnology, specifically for floating gate memories.

Main Methods:

Genetically modifying ferritin with carbon-specific binding peptides to control substrate interaction.
Utilizing buffer conditions to tune protein-protein interactions for self-assembly.
Removing the protein shell to yield arrays of inorganic nanoparticles.

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Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

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Last Updated: Jul 17, 2026

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology

Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology

Published on: March 12, 2015

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Covalent Immobilization of Proteins for the Single Molecule Force Spectroscopy

Published on: August 20, 2018

Main Results:

Successful fabrication of two-dimensional hexagonally close-packed (2D-HCP) ferritin arrays on a carbonaceous substrate.
Demonstrated tunable protein-substrate and protein-protein interactions for controlled assembly.
Obtained ordered arrays of independent inorganic nanoparticles after protein removal.

Conclusions:

Genetically engineered ferritin provides a versatile platform for creating ordered nanoparticle arrays.
This method offers a pathway for fabricating functional nanomaterials for electronic applications like floating gate memories.