Assertion: tryptophan | /r/CapableOf | compete with 5 other amino acids
Facets:
value: for the same transporter
type: PURPOSE
Source sentences:
text: Tryptophan must compete with 5 other amino acids to pass through the blood-brain barrier and enter the brain.
text: Not only does tryptophan have paltry representation among the passengers; it also competes with five other amino acids for the same transporter.