title: Functional analysis of the aureothin iterative type I polyketide synthase.
abstract: The modular-type polyketide synthase (PKS) that is involved in aureothin (aur) biosynthesis represents one of the first examples in which a single PKS module (AurA) is used in an iterative fashion. Here we report on the heterologous expression of an engineered AurAB fusion protein that unequivocally proves the iterative nature of AurA. In addition, point mutations reveal that aur PKS module 4 participates in polyketide biosynthesis despite its aberrant acyltransferase domain.
authors.affiliation: Hans-Knöll-Institute for Natural Products Research, Beutenbergstrasse 11a, 07745 Jena, Germany.
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.forename: Christian
authors.initials: C
authors.lastname: Hertweck
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002867:Chromones / Q000737:chemistry / Q000378:metabolism; D009154:Mutation / Q000235:genetics; D048630:Polyketide Synthases / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D017434:Protein Structure, Tertiary
chemical_list: D002867:Chromones; D048630:Polyketide Synthases; C012198:aureothin