Assertion: intracellular tryptophan | /r/CapableOf | play crucial role
Facets:
value: in the formation of nicotinamide
type: OTHER
Source sentences:
text: Of three rate-limiting or key enzymes, the initial enzyme tryptophan 2,3-dioxygenase (TDO), ACMSD and QPRT in the tryptophan–nicotinamide pathway, ACMSD is considered to play a crucial role in the formation of nicotinamide.