Amino Acid Metabolism — Flashcards

Pyruvate is converted to _____ via the enzyme alanine aminotransferase (ALT) (Cahill cycle)

Difference in proportion of _____ and Pheomelanin leads to difference in skin colours

The amino acid _____ is essential during periods of positive nitrogen balance

_____ cleaves the amino acid arginine into citrulline and nitric oxide

_____ is a metabolic disorder associated with black-colored urine after prolonged exposure to air

After organification of I2, coupling between _____ may combine to form thyroxine (T4)

In the liver, glutamate may transfer its NH3 to _____, forming aspartate and -ketoglutarate

Once in target tissues, the enzyme _____ converts T4 to T3 by removing one atom of I2; a certain portion is also converted to reverse T3 (rT3) which is inactive

_____ and Histidine are semi-essential amino acids

Argininosuccinate may be broken down into _____ and fumarate via the enzyme argininosuccinase