Converse of object

• contain: All of these contain the amino acid tryptophan which helps your body produce the sleep hormone melatonin.

• call: To restore serotonin levels the amino acid called tryptophan is needed.

• take: The symptoms look like auto-immune disease, the same kind ( albeit milder ) that hit the people who took the contaminated tryptophan.

• produce: The modified organism may also produce new toxins: genetically engineered bacteria produced toxic tryptophan.

• convert: Plants have two other pathways to convert tryptophan to IAA [ 8 ] , and the seed containment system introduces a third.

Preposition: in

• supplement: A review of the use of tryptophan in supplements in other member states indicates that the recommended daily dose varies from 45mg to 600mg.

Modifies a noun

• residue: In particular, we have studied by DFS the role of tryptophan residues in membrane protein anchoring using synthetic WALP peptides.

• depletion: The effects of acute tryptophan depletion of cognitive and affective processing in healthy volunteers.

• fluorescence: The protein folding dynamics after mixing are measured by intrinsic tryptophan fluorescence excited by a UV lamp.

• level: When the tryptophan levels in the vat are high enough, the solution is purified by filtration.

• hydroxylase: It performs the conversion by an enzyme called tryptophan hydroxylase.

• breach: Tryptophan breaches the blood-brain barrier and is necessary for the production of the 'feel-good ' brain chemical serotonin.

Noun used with modifier

• amino: All of these contain the amino acid tryptophan which helps your body produce the sleep hormone melatonin.

• acid: All of these contain the amino acid tryptophan which helps your body produce the sleep hormone melatonin.

• plasma: Kishimoto H, Hama Y. The level and diurnal rhythm of plasma tryptophan and tyrosine in manic-depressive patients.