▁as ▁ye ast , ▁can ▁be ▁present ▁as ▁head - to - tail ▁dim ers . ▁The ▁h D AA O ▁gene ▁is ▁found ▁on ▁chrom os ome ▁ 1 2 ▁and ▁contains ▁ 1 1 ▁ex ons . ▁ ▁DA O ▁is ▁capable ▁of ▁reducing ▁o xygen ▁quickly , ▁and ▁when ▁reduced ▁can ▁stabil ize ▁an ionic ▁red ▁sem iqu in one , ▁and ▁it ▁is ▁capable ▁of ▁forming ▁a ▁c oval ent ▁bond ▁with ▁sul f ites . ▁These ▁are ▁all ▁typical ▁properties ▁associated ▁with ▁flav op rote ins . ▁Human ▁D AA O ▁has ▁slightly ▁different ▁properties ▁from ▁other ▁D AA O ▁mole cules , ▁including ▁a ▁we aker ▁ability ▁to ▁bind ▁F AD ▁and ▁decre ased ▁rate ▁of ▁reaction ▁for ▁some ▁mole cules , ▁such ▁as ▁fla vin . ▁ ▁A ctions ▁in ▁the ▁brain ▁DA O ▁acts ▁in ▁the ▁brain ▁to ▁ox id ize ▁specific ▁D - am ino ▁ac ids ▁using ▁the ▁F AD ▁region ▁( f la vin ▁ad en ine ▁din uc le ot ide ▁region ) ▁and ▁is ▁commonly ▁thought ▁to ▁be ▁produced ▁in ▁the ▁h ind bra in , ▁although ▁there ▁is ▁new ▁evidence ▁of ▁DA O ▁expression ▁in ▁the ▁for eb rain ▁as ▁well . ▁The ▁DA O ▁present ▁in ▁the ▁for eb rain ▁seems ▁to ▁be ▁in active , ▁however , ▁causing ▁spec ulation ▁on ▁the ▁topic ▁of ▁DA O ▁function ▁in ▁the ▁for eb rain ▁as ▁opposed ▁to ▁the ▁h ind bra in ▁where ▁the ▁function ▁is ▁more ▁well -