The enzyme
L-3-cyanoalanine synthase (EC 4.4.1.9)
catalyzes the
chemical reaction
A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...
:
L-cysteine + hydrogen cyanide
L-3-cyanoalanine + hydrogen sulfide
This enzyme belongs to the family of
lyase
In biochemistry, a lyase is an enzyme that catalyzes the breaking (an elimination reaction) of various chemical bonds by means other than hydrolysis (a substitution reaction) and oxidation, often forming a new double bond or a new ring structure. ...
s, specifically the class of carbon-sulfur lyases. The
systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature.
A semisystematic name or semitrivial ...
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
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EC 4.4.1
Enzymes of unknown structure
{{enzyme-stub