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Substance Name: Cystathionine gamma-Lyase
RN: 9012-96-8


  • 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
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Names and Synonyms

Name of Substance

  • Cystathionine gamma-Lyase

MeSH Heading

  • Cystathionine gamma-Lyase


  • Cystathionase
  • Cystathionine gamma Lyase
  • Cysteine desulfhydrase
  • Cystine desulfhydrase
  • Cystine desulfohydrolase
  • Deaminase, homoserine
  • Dehydratase, homoserine
  • Desulfhydrase, cysteine
  • Desulfhydrase, cystine
  • Desulfohydrolase, cystine
  • gamma Cystathionase
  • gamma-Cystathionase
  • gamma-Lyase, cystathionine
  • Homoserine deaminase
  • Homoserine dehydratase

Systematic Name

  • L-Cystathionine cysteine-lyase (deaminating)

Registry Numbers

CAS Registry Number

  • 9012-96-8

System Generated Number

  • 0009012968