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Three types of secondary metabolic genes are grouped together. KS, ketosynthase; AT, acyltransferase; DH, dehydratase; MT, methyltransferase; ER, enoylreductase; KR, keto reductase; ACP, acyl carrier protein; A, adenylation domain; PCP, peptidyl carrier protein; TE, thioesterase; R, reductase; C, condensation domain; SAT, starter unit ACP transacylase; and PT, product template.
