Animal muscle proteins are stated by Rose (10) to contain 21 amino acids of which 10 must be derived directly from the food while 11 can be modified by transamination provided some other primary amino acid is supplied. Although storage and particularly seed proteins are relatively simple in their structural pattern and amino acid content, herbivorous, and eventually all, animals derive their amino acids entirely from plant products. It seems reasonable to assume, therefore, that leaf proteins are comparable in complexity and amino acid distribution to muscle proteins.
Proceedings of the Iowa Academy of Science
©1947 Iowa Academy of Science, Inc.
Loomis, W. E.
"Mechanism of Protein Synthesis,"
Proceedings of the Iowa Academy of Science, 54(1), 155-159.
Available at: https://scholarworks.uni.edu/pias/vol54/iss1/17