Non-reducing polyketide synthase; part of the gene cluster that mediates the biosynthesis of aurofusarin, a red mycelium pigment which is acting as a mycotoxin (PubMed:15811992, PubMed:16278459, PubMed:15809006, PubMed:15780665, PubMed:16879655). The first step is performed by the polyketide synthase which condenses one acetyl-CoA and 6 malonyl-CoA units to form the first intermediate, the cyclic heptaketide and yellow pigment YWA1 (PubMed:21296881, PubMed:23557488). The C2 hydroxyl group in the pyrone ring of YWA1 is probably formed during ring closure by an aldol-type cyclization reaction (PubMed:21296881). The dehydratase aurZ then acts as the first tailoring enzyme in the aurofusarin biosynthetic pathway by converting YWA1 to nor-rubrofusarin (PubMed:21296881, PubMed:23557488). Nor-rubrofusarin is then methylated to rubrofusarin by the O-methyltransferase aurJ (PubMed:21296881, PubMed:23557488). Rubrofusarin is then transported across the plasma membrane by the rubrofusarin-specific pump aurT for further enzymatic processing by the extracellular complex composed of GIP1, aurF, aurO and aurS to yield aurofusarin (PubMed:21296881). acetyl-CoA + 6 H(+) + 6 malonyl-CoA = 6 CO2 + 7 CoA + H2O + YWA1 Pigment biosynthesis. Expression is regulated by the aurofusarin biosynthesis cluster-specific transcription factor aurR1/GIP2 (PubMed:16879655, PubMed:16461721). Expression is negatively regulated by the MAPK-mediated osmotic stress-signaling pathway (PubMed:17897620). Expression is also regulated by the CID1 cyclin C-like protein (PubMed:19909822). Multidomain protein; including a starter unit:ACP transacylase (SAT) that selects the starter unit; a ketosynthase (KS) that catalyzes repeated decarboxylative condensation to elongate the polyketide backbone; a malonyl-CoA:ACP transacylase (MAT) that selects and transfers the extender unit malonyl-CoA; a product template (PT) domain that controls the immediate cyclization regioselectivity of the reactive polyketide backbone; and an acyl-carrier protein (ACP) that serves as the tether of the growing and completed polyketide via its phosphopantetheinyl arm (By similarity). The C-terminal region is involved in Claisen-type cyclization of the second ring of naphthopyrone. Leads to a albinos phanotype and affects conidiation (PubMed:15811992, PubMed:16278459, PubMed:15809006, PubMed:15780665).