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They found the formation of a far larger variety of life's building blocks, including two kinds of nucleobases and nine kinds of proteinogenic amino acids. (sciencedaily.com)
Although more than 200 different amino acids exist, the most well known are the 22 so - called proteinogenic amino acids. (aminoacidstudies.org)
One group of amino acids that are very important to humans are classified as proteinogenic amino acids. (aminoacidstudies.org)