Hydrogen sulfide is a gasotransmitter, with similarities to nitric oxide and carbon monoxide. Although the enzymes indicated below have multiple enzymatic activities, focus here generation of hydrogen sulphide (H2S) characteristics are described accordingly. Cystathionine β-synthase (CBS) cystathionine γ-lyase (CSE) pyridoxal phosphate (PLP)-dependent enzymes. 3-mercaptopyruvate sulfurtransfera...