In the early 1930’s william rose fed laboratory rats a mixture of all 19 amino acids known to be present in proteins. he observed that his rats lost weight. this observation led to the discovery of ______ as the 20th amino acid found in proteins.
If these were the missing choices: A)Gly B)Ala C)Tyr D)Asn E)Thr
The answer is E.) Thr.
Thr stands for Threonine. It is a polar amino acid. Its side chains are also hydroxylic. Aside from promoting normal growth by helping maintain proper protein balance in a body, Threonine also supports cardiovascular, central nervous, immune system, and liver function.
