Assertion: polypeptide's amino acid | /r/HasAspect | important roles
Facets:
value: as metabolic intermediates
type: MANNER
value: in humans
type: OTHER
Source sentences:
text: In humans, non-protein amino acids also have important roles as metabolic intermediates, such as in the biosynthesis of the neurotransmitter gamma-amino-butyric acid (GABA).