phenylalanine

Converse of object

• convert: People who lack the enzyme to convert phenylalanine to tyrosine are not able to metabolize phenylalanine normally.
• contain: It contains phenylalanine, which is an excellent natural pain blocker.
• include: The breakdown products of aspartame include phenylalanine which some people are sensitive to.
• metabolize: People who lack the enzyme to convert phenylalanine to tyrosine are not able to metabolize phenylalanine normally.

Preposition: in

• body: In children with PKU, the levels of phenylalanine in the body build up to toxic levels, causing mental retardation and organ damage.
• blood: This rate gives the level of phenylalanine in the blood.

Adjective modifier

excess: Excess phenylalanine is broken down to fumarate and acetoacetate, both of which are part of normal energy metabolism.

Modifies a noun

• hydroxylase: The baby is unable to make an enzyme, phenylalanine hydroxylase, which converts phenylalanine to tyrosine.
• level: They often show very disturbed behavior and have other symptoms from their high phenylalanine levels.
• ammonia-lyase: Tobacco plants epigenetically suppressed in phenylalanine ammonia-lyase expression do not develop systemic acquired resistance in response to infection by tobacco mosaic virus.

Noun used with modifier

• amino: Phenylketonuria is a genetic disorder, which means, from birth, these persons cannot break down the amino acid phenylalanine.
• acid: Phenylketonuria is a genetic disorder, which means, from birth, these persons cannot break down the amino acid phenylalanine.
• blood: The laboratory method used to detect high blood phenylalanine concentrations is tandem mass spectrometry.
• enzyme: Classical PKU is caused by a deficiency of the liver enzyme phenylalanine hydroxylase, which converts the amino acid phenylalanine to tyrosine.