ate - ph osph at ase , ▁commonly ▁referred ▁to ▁as ▁I MP ase , ▁are ▁en zym es ▁of ▁the ▁ph osph odi ester ase ▁family ▁of ▁en zym es . ▁They ▁are ▁involved ▁in ▁the ▁ph osph op hat id y lin os it ol ▁[ PI ] ▁signal ing ▁path way , ▁which ▁affect s ▁a ▁wide ▁array ▁of ▁cell ▁functions , ▁including ▁but ▁not ▁limited ▁to , ▁cell ▁growth , ▁apo pt osis , ▁secret ion , ▁and ▁information ▁processing . ▁In hib ition ▁of ▁in os it ol ▁mon oph osph at ase ▁may ▁be ▁key ▁in ▁the ▁action ▁of ▁l ith ium ▁in ▁tre ating ▁b ip olar ▁dis order , ▁specifically ▁man ic ▁de pression . ▁ ▁The ▁catal yz ed ▁reaction : ▁ ▁my o - inos it ol ▁ph osph ate ▁+ ▁H 2 O ▁ ▁my o - inos it ol ▁+ ▁ph osph ate ▁ ▁N omen cl ature ▁▁ ▁This ▁en zym e ▁belongs ▁to ▁the ▁family ▁of ▁hyd rol ases , ▁specifically ▁those ▁acting ▁on ▁ph osph or ic ▁mon o ester ▁b onds . ▁The ▁system atic ▁name ▁of ▁this ▁en zym e ▁class ▁is ▁my o - inos it ol - ph osph ate ▁ph osph oh yd rol ase . ▁Other ▁names ▁in ▁common ▁use ▁include : ▁▁ ▁my o - inos it ol - 1 ( or ▁ 4 )- mon oph osph at ase , ▁ ▁in os it ol ▁ 1 - ph osph