Enzyme:4.4.1.9

Upper Levels: EC4.-.-.- Lyases. : EC4.4.-.- Carbon-sulfur lyases. : EC4.4.1.- Carbon-sulfur lyases.

IDs and Links
IUBMB	EC4
ExPaSy	NiceZyme 4.4.1.9

L-cysteine hydrogen-sulfide-lyase (adding HCN)
Systematic Name	L-cysteine hydrogen-sulfide-lyase (adding HCN)
Common Name	L-3-cyanoalanine synthase beta-cyanoalanine synthase beta-cyanoalanine synthetase

L-Cysteine + Hydrogen cyanide = 3-Cyano-L-alanine + Hydrogen sulfide (links: = )
L-Cysteine <Mapping> AtomMap:BMAAS3SF0003$BMAXS4AN0001$0 (2S)-2-Amino-3-cyanopropanoic acid 1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 L-Cysteine <Mapping> AtomMap:BMIOSF--0002$BMAAS3SF0003$0 Hydrogen sulfide 5 ↔ 1 Hydrogen cyanide <Mapping> AtomMap:BMXXSX--n012$BMAXS4AN0001$0 (2S)-2-Amino-3-cyanopropanoic acid 1 ↔ 5 2 ↔ 6