Scientists Unveil Artificial Metabolism to Convert CO2 into Useful Chemicals

Breakthrough system called ReForm can transform waste carbon dioxide into valuable compounds like malate, raising ethical questions about synthetic biology.

Apr. 11, 2026 at 10:50am

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A highly structured abstract painting in soft, earthy tones featuring sweeping geometric arcs, concentric circular forms, and precise botanical spirals, conceptually representing the complex chemical reactions and molecular structures involved in an artificial metabolism system that converts carbon dioxide into useful compounds.A synthetic biological system that transforms waste CO2 into valuable chemicals could revolutionize carbon-negative manufacturing.Stanford Today

Researchers at Northwestern and Stanford Universities have developed a groundbreaking artificial metabolism system called ReForm that can efficiently convert carbon dioxide, a major greenhouse gas, into useful chemicals like acetyl-CoA and malate. This synthetic pathway, built using an unprecedented screening of over 3,000 enzyme variants, operates outside of living cells and defies nature's own CO2 metabolic processes, sparking debate about the ethics and limits of engineering biology.

Why it matters

Addressing climate change requires innovative solutions to remove and repurpose excess atmospheric CO2. While nature has its own CO2 conversion methods, they are too slow to keep up with rising emissions. The ReForm system offers a potentially game-changing technology to transform waste CO2 into valuable industrial chemicals, but its reliance on synthetic biology raises complex questions about the role of humans in redesigning natural processes.

The details

The ReForm system is a six-step artificial metabolism pathway that can convert formate, a simple liquid derived from CO2, into acetyl-CoA, a fundamental building block of life. To create this system, the researchers screened an astonishing 66 enzymes and over 3,000 enzyme variants, a feat made possible by cell-free synthetic biology techniques that allow for rapid testing. Beyond formate, ReForm can also use formaldehyde and methanol as carbon sources, expanding its potential applications.

  • The study was published in the journal Nature Chemical Engineering in April 2026.

The players

Ashty Karim

Co-leader of the study and researcher emphasizing the urgent need for new carbon-negative manufacturing solutions.

Michael Jewett

Co-leader of the study and researcher at Stanford University, stating that hybrid technologies like ReForm could revolutionize carbon- and energy-efficient solutions.

Northwestern University

One of the institutions where the researchers who developed the ReForm system are based.

Stanford University

One of the institutions where the researchers who developed the ReForm system are based.

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What they’re saying

“If we're going to address this global challenge, we critically need new routes to carbon-negative manufacturing.”

— Ashty Karim, Co-leader of the study

“Hybrid technologies like ReForm could revolutionize carbon- and energy-efficient solutions.”

— Michael Jewett, Co-leader of the study

What’s next

The research team plans to continue optimizing the ReForm system for even greater efficiency and explore its potential to engineer entirely new enzymes and metabolic pathways.

The takeaway

The development of the ReForm artificial metabolism system represents a significant breakthrough in the quest to find sustainable solutions for converting waste CO2 into valuable chemicals. However, this achievement also raises complex ethical questions about the role of synthetic biology in redesigning natural processes, which will be an important part of the ongoing discussion around this technology.