An enzyme of long-chain fatty acid synthesis, that adds a two-carbon unit from malonyl-(acyl carrier protein) to another molecule of fatty acyl-(acyl carrier protein), giving a beta-ketoacyl-(acyl carrier protein) with the release of carbon dioxide. EC 2.3.1.41.

Synonyms: Synthase, 3-Keto-ACP beta Keto-Acyl Carrier Protein Synthase II beta-Ketoacyl-Coenzyme A (CoA) Synthase 3-Oxoacyl (Acyl Carrier Protein) Synthase Synthetase, 3-Oxoacyl Acyl-(acyl carrier protein):malonyl-(acyl-carrier-protein) C-acyltransferase (decarboxylating) 3-Oxoacyl Synthetase Acyl Malonyl ACP Condensing Enzyme 3 Keto ACP Synthase 0 beta Keto-Acyl Carrier Protein Synthase I beta Keto Acyl Carrier Protein Synthase I Condensing Enzyme, Acyl-Malonyl-ACP beta Keto Acyl Synthetase 3-Oxoacyl-(Acyl-Carrier-Protein) Synthase Acyl-Malonyl-ACP Condensing Enzyme EC 2.3.1.41 beta Keto Acyl Carrier Protein Synthase II beta Ketoacyl ACP Synthase 3 Oxoacyl Synthetase 3 Oxoacyl (Acyl Carrier Protein) Synthase 3-Keto-ACP Synthase