When molecule A and molecule B are added to the cells, Inositol Triphosphate level decrease. What is molecule b?
context: when molecule A is added to the cells, increased levels of the 2nd messenger (inositol triphosphate (IP3) are detected. The receptor molecule A is binding to is Alpha 1 receptor and the first messenger is Epinephrine(adrenergic ligand). (I’m stumped what molecule b could be I’m thinking norepinephrine, but i do not know if when epi and NE are added to a cell IP3 decreases.)
‘also do you think the receptor site has a greater affinity for molecule A or B.