Cystathionine γ-lyase is an enzyme that plays a crucial role in the metabolism of sulfur-containing amino acids, particularly in the conversion of cystathionine to cysteine. It is involved in the transsulfuration pathway, which helps regulate levels of homocysteine and contributes to the synthesis of important biomolecules. This enzyme is found in various tissues, including the liver and brain, and is essential for maintaining cellular health. Dysregulation of cystathionine γ-lyase activity has been linked to several health conditions, including cardiovascular diseases and neurodegenerative disorders, highlighting its importance in human physiology.