623994 external_news 1565022910 1565024268 Life on Earth is complex and varied, but every living organism on the planet builds its proteins from the same set of 20 amino acids. All proteins in a human body, for example, are made up of some combination of the 20 common amino acids. But how exactly did that happen? Chemists say they might finally have some answers. ... “The research helps us understand how positively charged peptides could have formed on the pre-biotic earth,” says Moran Frenkel-Pinter, Ph.D., in the press statement. Frenkel-Pinter, a postdoctoral fellow at Georgia Tech, is the first author of the accompanying paper published in the Proceedings of the National Academy of Sciences.

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