ic ▁mechan isms ▁of ▁sch iz op hren ia . ▁D AA O ▁also ▁plays ▁a ▁role ▁in ▁both ▁bi ote chn ological ▁and ▁medical ▁adv anc ements . ▁Ris per id one ▁and ▁sod ium ▁ben zo ate ▁are ▁in hib itors ▁of ▁D AA O . ▁ ▁D - am ino ▁acid ▁ox id ase ▁should ▁not ▁be ▁confused ▁with ▁diam ine ▁ox id ase ▁as ▁they ▁are ▁both ▁sometimes ▁referred ▁to ▁as ▁DA O . ▁ ▁History ▁In ▁ 1 9 3 5 , ▁Hans ▁Adolf ▁Kre bs ▁discovered ▁D - am ino ▁acid ▁ox id ase ▁after ▁an ▁experiment ▁with ▁por c ine ▁kid ney ▁hom ogen ates ▁and ▁am ino ▁ac ids . ▁Short ly ▁after , ▁War burg ▁and ▁Christian ▁observed ▁the ▁ox id ase ▁had ▁a ▁F AD ▁c of actor ▁making ▁it ▁the ▁second ▁fla vo enz yme ▁to ▁be ▁discovered . ▁In ▁the ▁up coming ▁years ▁other ▁scient ists ▁developed ▁and ▁improved ▁the ▁pur ification ▁procedure ▁for ▁a ▁por c ine ▁D - am ino ▁acid ▁ox id ase . ▁ ▁In ▁ 1 9 8 3 , ▁in hib itors ▁for ▁the ▁ox id ase ▁were ▁discovered . ▁In ▁ 2 0 0 6 , ▁the ▁ 3 D ▁structure ▁of ▁the ▁ox id ase ▁was ▁published . ▁Currently , ▁the ▁link ▁between ▁human ▁D - am ino ▁acid ▁ox id ase ▁( h D AA O ) ▁activity ▁and ▁sch iz op hren ia ▁is ▁being ▁research ed . ▁ ▁Str ucture