Map Map Learning Sapling macmillan learning Assume that the binding of one molec

Question

Map Map Learning Sapling macmillan learning Assume that the binding of one molecule of epinephrine to a seven-transmembrane helix (7TM) receptor (also called the G protein-coupled receptor, or GPCR) results in the activation of 470 Ga subunits. In addition, suppose that each activated adenylyl cyclase catalyzes the conversion of 30 ATP molecules to CAMP per second. (Assume that each G protein activates a single unique adenylyl cyclase.) Calculate the number of moles of CAMP that are produced per second. Enter your answer to at least two significant figures. Number mol CAMP

Explanation / Answer

470 x 30 = 14100 molecules/sec

(14100molecules/sec) x (1 mol/ 6.022x10^23) = 1.345x10^-20

rounded to 2 sig figs: 2.34x10^-20

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