Articles on Biochemistry

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ATP synthase is an enzyme that has been using phosphate to generate life’s energy for millions of years. Nanoclustering/Science Photo Library via Getty Images

Molecular ‘fossils’ offer microscopic clues to the origins of life – but they take care to interpret

A protein historian and evolutionary biochemist found that a protein sequence present across all known life didn’t form as researchers previously thought it did.
Synthetic biology offers many tantalizing possibilities, but scientists consider some projects too risky to pursue. DBenitostock/Moment via Getty Images

Mirror life is a scientific fantasy leading to a dangerous reality − a synthetic biologist explains how mirror bacteria could conquer life on Earth

Synthetic cells that look just like natural cells but are chemically reversed could outcompete other living organisms − with dire consequences for human health and the environment.
How did early cells keep themselves distinct while allowing for some amount of exchange? UChicago Pritzker School of Molecular Engineering/Peter Allen, Second Bay Studios

Rain may have helped form the first cells, kick‑starting life as we know it

The earliest cells likely didn’t have membranes to separate and protect their components and chemistry away from a harsh surrounding environment. But they may have made do with rain.

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