Medical Definition of Serine

Reviewed on 6/3/2021

Serine: An amino acid, one of the 20 building blocks of protein. A dietary nonessential amino acid, serine is present in many proteins participates in the synthesis of purines and pyrimidines, and is in the active sites of many enzymes. Symbol: Ser.

QUESTION

According to the USDA, there is no difference between a “portion” and a “serving.” See Answer

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