– Why are proteins built from amino acids? Why not build them from the chemically simpler hydroxy acids?.This question leads to other related why questions for biochemists: Biochemists want to know why the specific set of 20 amino acids, and not the others, occurs in proteins. Yet, hundreds of amino acids exist in nature. That is, the set of amino acids used in biology is universal. Twenty chemically distinct amino acids comprise the proteins found in every organism on Earth. One that has long fueled our curiosity relates to the choice of amino acids used to build proteins.Īmino acids are the building blocks that make up proteins. Why is the sky blue? Why is grass green? Biochemists like asking why questions, too. This discovery provides new evidence that life’s chemistry stems from the work of a Creator. Recent work from the University of Hawaii adds new insight, indicating that the set of amino acids used to make proteins is the optimal set. Over the last few decades, researchers have made some progress in addressing this question. Biochemists have long puzzled over the 20 amino acids used to build proteins.
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