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Bacteria Breakthrough Could Simplify Rare Earth Element Processing

Penn State researchers have discovered that a bacterial protein can selectively bind to different rare earth elements, offering a new and more efficient way to harvest and purify these essential components of modern technologies

A protein mines, sorts rare earths better than humans, paving way for green tech

Rare earth elements, like neodymium and dysprosium, are a critical component to almost all modern technologies, from smartphones to hard drives, but they are notoriously hard to separate from the Earth s crust and from one another. Scientists have discovered a new mechanism by which bacteria can select between different rare earth elements, using the ability of a bacterial protein to bind to another unit of itself, or dimerize, when it is bound to certain rare earths, but prefer to remain a single unit, or monomer, when bound to others.

A protein mines, sorts rare earths better tha

Rare earth elements, like neodymium and dysprosium, are a critical component to almost all modern technologies, from smartphones to hard drives, but they are notoriously hard to separate from the Earth’s crust and from one another. Penn State scientists have discovered a new mechanism by which bacteria can select between different rare earth elements, using the ability of a bacterial protein to bind to another unit of itself, or “dimerize,” when it is bound to certain rare earths, but prefer to remain a single unit, or “monomer,” when bound to others.

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