This enzyme belongs to the family of lyases, specifically the class of carbon-sulfur lyases. The systematic name of this enzyme class is L-cysteine hydrogen-sulfide-lyase (adding hydrogen cyanide L-3-cyanoalanine-forming). Other names in common use include β-cyanoalanine synthase, β-cyanoalanine synthetase, β-cyano-L-alanine synthase, and L-cysteine hydrogen-sulfide-lyase (adding HCN). This enzyme participates in cyanoamino acid metabolism.

References

Akopyan TN, Braunstein AE, Goryachenkova EV (1975). "β-Cyanoalanine synthase: purification and characterization". Proc. Natl. Acad. Sci. U.S.A. 72 (4): 1617–21. Bibcode:1975PNAS...72.1617A. doi:10.1073/pnas.72.4.1617. PMC 432590. PMID 1055433.
Castric PA, Conn EE (1971). "Formation of β-cyanoalanine by O-acetylserine sulfhydrylase". J. Bacteriol. 108 (1): 132–6. doi:10.1128/jb.108.1.132-136.1971. PMC 247041. PMID 5001194.
Hendrickson HR (1968). "The β-cyanoalanine synthase of blue lupine". Fed. Proc. 27: 593.
Hendrickson HR, Conn EE (1969). "Cyanide metabolism in higher plants. IV. Purification and properties of the β-cyanolanine synthase of blue lupine". J. Biol. Chem. 244 (10): 2632–40. doi:10.1016/S0021-9258(18)83446-9. PMID 5769995.

v t e Carbon–sulfur lyases (EC 4.4)
4.4.1	Cystathionine gamma-lyase Cystathionine beta-lyase Leukotriene C4 synthase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)