Beta ketoacyl acyl carrier protein synthase I

In enzymology, a beta-ketoacyl-acyl-carrier-protein synthase I (EC 2.3.1.41) is an enzyme that catalyzes the chemical reaction

an acyl-acyl-carrier-protein + malonyl-acyl-carrier-protein ⇌ a 3-oxoacyl-acyl-carrier-protein + CO₂ + acyl-carrier-protein

Thus, the two substrates of this enzyme are acyl-acyl-carrier-protein and malonyl-acyl-carrier-protein, whereas its 3 products are 3-oxoacyl-acyl-carrier-protein, CO₂, and acyl carrier protein. This enzyme participates in fatty acid biosynthesis. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups.