Catalysis of the reaction: acetyl-CoA + n malonyl-CoA + 2n NADPH + 2n H+ = long-chain fatty acid + n+1 CoA + n CO2 + 2n NADP+.
Synonyms:
related_synonym:
acyl-CoA:malonyl-CoA C-acyltransferase (decarboxylating, oxoacyl- and enoyl-reducing and thioester-hydrolysing)
xref:
EC:2.3.1.85; MetaCyc:FATTY-ACID-SYNTHASE-RXN; RHEA:14993; Reactome:R-HSA-163756 "Formation of fatty acid synthase (FAS) dimer"; Reactome:R-HSA-75872 "Conversion of malonyl-CoA and acetyl-CoA to palmitate"