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Cystathionine gamma-lyase

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Cystathionine gamma-lyase

(Science: enzyme) a multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyses the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate.

chemical name: L-Cystathionine cysteine-lyase (deaminating)

registry number: EC 4.4.1.1