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Medical Term:


Pronunciation: ok'si-je-nas

Definition: One of a group of enzymes (EC subclass 1.13) that catalyzes direct incorporation of O2 into substrates; tryptophan 2,3-dioxygenase (tryptophan pyrrolase) catalyzes a reaction between O2 and l-tryptophan to form N-l-formylkynurenine.

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