Probable polyketide synthase. Binds 1 phosphopantetheine covalently. Up-regulated by P.aeruginosa, PAO1 strain and PA14 strain infection and down-regulated by phagocytic stimuli and growth on bacteria. Modular protein that is responsible for the completion of one condensation-processing cycle. The beta-ketoacyl synthase region is responsible for the actual condensation reaction while the acyl/malonyl transferase region is responsible for incorporating carboxylic acids units onto an acyl carrier protein (ACP) domain (By similarity). Encoded by one of the numerous copies of polyketide synthase genes and clustered as a pair pks16/pks17 in chromosome 2.