<cell biology> A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyses the reaction of homocysteine with serine to form cystathionine with the elimination of water.
Chemical name: L-Serine hydro-lyase (adding homocysteine)
Registry number: EC 220.127.116.11
(12 Dec 1998)
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