1) Enzyme 
Any enzyme (EC subclass 4.1.1) that removes a molecule of carbon dioxide from a carboxylic group (e.g., from an alpha-amino acid, converting it into an amine). ... (05 Mar 2000) ... 
(de″kahr-bok´sә-lās) any of the lyase class of enzymes that catalyze the removal of a carbon dioxide molecule from a compound.
Type: Term Pronunciation: dē′kar-bok′sil-ās Definitions: 1. Any enzyme that removes a molecule of carbon dioxide from a carboxylic group (from an α-amino acid, converting it into an amine).
[n] - any of the enzymes that hydrolize the carboxyl group
noun any of the enzymes that hydrolize the carboxyl group
any of the class of enzymes that catalyze the release of carbon dioxide from the carboxyl group of certain organic acids. Also called