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proteins

For decades, an origin-of-life story starring RNA has prevailed. New research may be shaking that theory’s hold on our understanding of life’s beginnings.
origins of life

The End of the RNA World Is Near, Biochemists Argue

For decades, an origin-of-life story starring RNA has prevailed. New research may be shaking that theory’s hold on our understanding of life’s beginnings.

Preserving its DNA ought to be a cell’s top priority. But bacteria slow their DNA repair to a crawl in favor of proofreading gene transcripts.
molecular biology

Bacteria Sacrifice DNA Repair for Better RNA

Preserving its DNA ought to be a cell’s top priority. But bacteria slow their DNA repair to a crawl in favor of proofreading gene transcripts.

Which mattered first at the dawn of life: proteins or nucleic acids? Proteins may have had the edge if a theorized process let them grow long enough to become self-replicating catalysts.
origins of life

Life’s First Molecule Was Protein, Not RNA, New Model Suggests

Which mattered first at the dawn of life: proteins or nucleic acids? Proteins may have had the edge if a theorized process let them grow long enough to become self-replicating catalysts.

An unexpected mechanism allows wasps to rapidly co-opt genes for new toxic functions.
evolution

Moonlighting Genes Evolve for a Venomous Job

An unexpected mechanism allows wasps to rapidly co-opt genes for new toxic functions.

The proteins that unravel as the temperature starts to rise turn out to be among the most vital.
molecular biology

How Heat Kills Cells

The proteins that unravel as the temperature starts to rise turn out to be among the most vital.

Proteins work like rigid keys to activate cellular functions — or so everyone thought. Scientists are discovering a huge number of proteins that shape-shift to do their work, upending a century-old maxim of biology.
molecular biology

The Shape-Shifting Army Inside Your Cells

Proteins work like rigid keys to activate cellular functions — or so everyone thought. Scientists are discovering a huge number of proteins that shape-shift to do their work, upending a century-old maxim of biology.