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amino acids

Cultural  
  1. Basic organic molecules (see also organic molecule) that combine to form proteins. Amino acids are made up of hydrogen, carbon, oxygen, and nitrogen. Some examples of amino acids are lysine, phenylalanine, and tryptophan.


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Amino acids are the basic molecular building blocks of proteins.

Example Sentences

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Although the SARS-CoV-2 and RaTG13 versions of OrfB9 are nearly identical, they differ by just one amino acid among roughly 100 amino acids in the protein.

From Science Daily • Jun. 24, 2026

To investigate whether these amino acids affect longevity, the researchers analyzed health and genetic information from more than 270,000 participants enrolled in the UK Biobank, one of the world's largest long term health databases.

From Science Daily • Jun. 15, 2026

“You build on the brain’s natural ability to bring in important things, like iron or amino acids, and catch a ride,” he says.

From Barron's • Jun. 3, 2026

Peptides—short chains of amino acids marketed for recovery, muscle growth and antiaging—have become popular among U.S. wellness figures including Robert F. Kennedy Jr. and Joe Rogan, despite limited evidence for many of their claimed benefits.

From The Wall Street Journal • May 29, 2026

Chemical reactions like those in our laboratory vessels may be responsible for the organic matter in interstellar space and the amino acids found in meteorites.

From "Cosmos" by Carl Sagan

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