We build materials that know what to look for.

Bioengineered capture of critical metals. Precision at the scale of a single atom — and a platform that is still being pointed.

Bioengineered circularity for critical metals

Rare earth elements back in the loop.

What we're building

Three things we will say out loud.

Precision capture

Rare earths and precious metals, pulled selectively out of dilute streams — the ones where conventional separation chemistry stops paying for itself.

Plug and play

A cartridge that drops into the line that already exists. No solvent inventory. No new plant.

An adaptable platform

The recognition chemistry is a biomolecule. Which metal it binds is a parameter, not a constraint.

Reach out to know more.

Six things we do not compromise on.

They shape the company more than the technology does, which is the part most people get backwards.

Sustainability

Innovating around infrastructure that already exists, and creating value where none was thought left.

Innovation

Synthetic biology, materials science and protein engineering, aimed squarely at industrial biomanufacturing.

Reliability

Built with recyclers and smelters, not at them. They are the stakeholders we exist to serve.

Accountability

Mistakes are encouraged, provided the learning follows. Trial and error is the method, not the excuse.

Efficiency

We accommodate personal needs and welcome difference. Movement encourages focus.

Proactivity

A horizontal approach to ideas. All of them get heard; the good ones get built.

Behind CaptuREE

Team.

CTO

Julien

Molecular biology and experimental design. Turns the concept into an architecture that survives real industrial conditions.

julien contact
CEO

Emma

Protein engineering and synthetic biology, pointed at industry, capital and policy. Connects the bench to the balance sheet.

emma contact

If you know why this matters, get in touch.

We are talking to industrial partners, recyclers and refiners, and investors who are comfortable being early.

reach out