lysine decarboxylase

{{infobox enzyme

| Name =

| EC_number = 4.1.1.18

| CAS_number = 9024-76-4

| GO_code = 0008923

| image = cadaverine_synthesis.svg

| width =

| caption = Cadaverine synthesis

}}

The enzyme Lysine decarboxylase ({{EnzExplorer|4.1.1.18}}) converts lysine to cadaverine.{{cite journal |vauthors=Gale EF, Epps HM | title = Studies on bacterial amino-acid decarboxylases: 1. l(+)-lysine decarboxylase | journal = Biochem. J. | volume = 38 | issue = 3 | pages = 232–42 | year = 1944 | doi = 10.1042/bj0380232 | pmid = 16747785 | pmc = 1258073 }}{{cite journal |vauthors=Soda K, Moriguchi M | title = Crystalline lysine decarboxylase | journal = Biochem. Biophys. Res. Commun. | volume = 34 | issue = 1 | pages = 34–9 |date=January 1969 | pmid = 5762458 | doi = 10.1016/0006-291X(69)90524-5}}

Abbreviated as Ldc, the enzyme is involved in acid-stress response in Enterobacteria. The mode of action is the proton consumption, thereby reducing the overall acidity of its environnement.