吲哚胺2，3双加氧酶（IDO）是一种免疫调节酶，可催化色氨酸分子中吲哚环氧化裂解，从而沿犬尿酸途径分解代谢的限速酶。
The immunoregulatory enzyme indoleamine 2,3-dioxygenase (IDO) catalyzes the oxidative cleavage of the indole ring of tryptophan.
测定了降解途径中相关酶的活性，表明对氯苯胺经过苯胺双加氧酶初始氧化和羟基化后，芳环的裂解是由邻苯二酚2 ，3 双加氧酶催化。
Enzymatic analysis show that initial reactions ofp-chloroaniline degradation by Diaphorobacter sp. PCA039 are catalyzed by aniline dioxygenase and chlorocatechol 2,3-dioxygenase.
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