Canadian Medical Guide > Chemicals and Drugs > Enzymes and Coenzymes > Enzymes > Lyases > Carbon-Sulfur Lyases Terms and Definitions

Carbon-Sulfur Lyases

Medical Definition:	Enzymes that catalyze the cleavage of a carbon-sulfur bond by means other than hydrolysis or oxidation. EC 4.4.
Guide Notes:	DF: C S LYASES
CAS Number:	EC 4.4

Carbon-Sulfur Lyases Categories.

	Cystathionine gamma-Lyase - A multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyzes the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate. EC 4.4.1.1.
	Lactoylglutathione Lyase - An enzyme that catalyzes the interconversion of methylglyoxal and lactate, with glutathione serving as a coenzyme. EC 4.4.1.5.

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