The clonidine suppression test limits natural production of this class of compounds to identify the presence of pheochromocytomas, which release these compounds.
Tolcapone and entecapone are useful inhibitors for an enzyme that facilitates methylation of these compounds' ring structures, while pteridine is a necessary cofactor for the enzyme that begins their biosynthesis. The clonidine suppression test limits natural production of this class of compounds to identify the presence of pheochromocytomas, which release these compounds. In addition to (*) COMT, another class of enzyme acting on this class of compounds facilitates oxidative deamination to produce either DOMA or DOPEG, called monoamine oxidases. Biosynthesis of these compounds begins with the hydroxylation and subsequent decarboxylation of tyrosine in chromaffin cells. For 10 points, name this class of compounds with namesake dihydroxybenzene groups, including the neurotransmitters and hormones in the sympathetic nervous system such as epinephrine and dopamine.
Tolcapone and entecapone are useful inhibitors for an enzyme that facilitates methylation of these compounds' ring structures, while pteridine is a necessary cofactor for the enzyme that begins their biosynthesis.
{Catecholamines}