Which of the following statement is true regarding "Catecholamines"?
Synthesis of catecholamine is organ specific, so option A is correct.Production of catecholamine begins once tyrosine hydroxylase acts on tyrosine and forms DOPA so option B is wrong.All catecholamine are metabolized to vanillyl mandelic acid (VMA) which gets excreted in urine unchanged. VMA has neither glucogenic nor ketogenic fate. So option C is also wrong.Out of various catecholamine, only epinephrine has got one methyl group. Dopamine and norepinephrine do not contain any methyl group. So option D is also wrong.
Production terminates with dopamine in the brain but epinephrine in the adrenal gland
Production begins with the action of tyrosinase on tyrosine
Are metabolized to both glucogenic and ketogenic fragments
All contain methyl group donated by S-adenosyl methionine
All India exam