They also found hypoxanthine and xanthine , which don 't factor in to dna but are used in other biological functions .
他们还发现了次黄嘌呤和黄嘌呤,它们于dna不发挥作用,但被用于其他生物功能。
Hydrogen peroxide is the major oxidant product of xanthine oxidase .
过氧化氢是黄嘌呤氧化酶的主要氧化产。
Moreover , analysis of the antarctic ice and australian soil around where the meteorites were found showed the amounts of the two nucleobases as well as the hypoxanthine and xanthine to be drastically lower .
Drugs that block some activities of the enzyme , known as xanthine oxidoreductase ( xor ) , might therefore offer a novel antiobesity therapy designed to fight fat before it even forms , the researchers said .