The activity of enzymes that act on these molecules can be measured using a spectrophotometric method involving tautomerase and enol borate complexes. Along with AGMO and nitric oxide synthase, tetrahydrobiopterin acts as a cofactor for hydroxylases that act on these molecules. A pathway that synthesizes these molecules uses DAHP synthase to regulate carbon. These molecules are produced in a pathway in which (*) chorismate mutase performs a Claisen rearrangement to synthesize prephenate. One test detects the presence of these molecules by reacting them with nitric acid and looking for a yellow color. These molecules characteristically absorb ultraviolet light at 280 nanometers. Along with folates, the shikimate pathway produces these molecules detected in the xanthoproteic test. For 10 points, name these molecules that include phenylalanine and tryptophan and have a ringed side chain. ■END■
ANSWER: aromatic amino acids [accept phenylalanine, tryptophan, or tyrosine before read; prompt on amino acids with “what property do their side chains have?”; prompt on proteins; prompt on folates before read with “what other molecules are produced by that pathway?”]
<Science - Biology>
= Average correct buzz position