Assertion: melatonin's activity | /r/HasProperty | low
Facets:
value: during peaks
type: TEMPORAL
value: during the dark phase
type: TEMPORAL
value: during daylight
type: TEMPORAL
Source sentences:
text: The mechanism behind this pattern of secretion during the dark cycle is that activity of the rate-limiting enzyme in melatonin synthesis - serotonin N-acetyltransferase (NAT) - is low during daylight and peaks during the dark phase.