Assertion: protein's amino acid | /r/HasProperty | leucine
Facets:
Source sentences:
text: The amino acids needed in greatest amounts are leucine (number 3), lysine (number 4), and phenylalanine (number 6).
text: Apparently, the limiting amino acid after lysine and tryptophan is isoleucine, as detected from animal feeding studies (Benson, Harper and Elvehjem, 1955).