cystathionine gamma (gamma)-lyase
cys·ta·thi·o·nine gam·ma (γ)-ly·ase(sis'tă-thī'ō-nēn gam'ă lī'ās)
A liver enzyme that catalyzes the hydrolysis of l-cystathionine to l-cysteine and 2-ketobutyrate. A deficiency of this enzyme results in cystathioninuria. A step in methionine catabolism and in cysteine biosynthesis.
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