SAT is the N-terminal starter unit:ACP transacylase of the aflatoxin biosynthesis pathway. SAT selects the hexanoyl starter unit from a pair of specialised fungal fatty acid synthase subunits (HexA/HexB) and transfers it onto the polyketide synthase A acyl-carrier protein to prime polyketide chain elongation. The family is found in association with Pfam:PF02801, Pfam:PF00109, Pfam:PF00550, Pfam:PF00975, Pfam:PF00698.

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4: Structure and function of an iterative polyketide synthase thioesterase domain catalyzing Claisen cyclization in aflatoxin biosynthesis. Korman TP, Crawford JM, Labonte JW, Newman AG, Wong J, Townsend CA, Tsai SC; Proc Natl Acad Sci U S A. 2010;107:6246-6251. PMID:20332208