Proteins

Proteins (/ˈproʊˌtiːnz/ or /ˈproʊti.ᵻnz/) are large biomolecules, or macromolecules, consisting of one or more long chains of amino acidresidues. Proteins perform a vast array of functions within living organisms, including catalyzing metabolic reactions, DNA replication,responding to stimuli, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of […]

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How did life on Earth get started?

July 30, 2013 How did life on Earth get started? Three new papers co-authored by Mike Russell, a research scientist at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., strengthen the case that Earth’s first life began at alkaline hydrothermal vents at the bottom of oceans. Scientists are interested in understanding early life on Earth because if […]

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