Type III Polyketide Synthase β-Ketoacyl-ACP Starter Unit and Ethylmalonyl-CoA Extender Unit Selectivity Discovered byStreptomyces coelicolorGenome Mining
نویسندگان
چکیده
منابع مشابه
Hydroxymalonyl-acyl carrier protein (ACP) and aminomalonyl-ACP are two additional type I polyketide synthase extender units.
Combinatorial biosynthesis of type I polyketide synthases is a promising approach for the generation of new structural derivatives of polyketide-containing natural products. A target of this approach has been to change the extender units incorporated into a polyketide backbone to alter the structure and activity of the natural product. One limitation to these efforts is that only four extender ...
متن کاملReview of Platensimycin and Platencin: Inhibitors of β-Ketoacyl-acyl Carrier Protein (ACP) Synthase III (FabH).
Platensimycin and platencin were successively discovered from the strain Streptomyces platensis through systematic screening. These natural products have been defined as promising agents for fighting multidrug resistance in bacteria by targeting type II fatty acid synthesis with slightly different mechanisms. Bioactivity studies have shown that platensimycin and platencin offer great potential ...
متن کاملBiosynthesis of trioxacarcin revealing a different starter unit and complex tailoring steps for type II polyketide synthase.
Trioxacarcins (TXNs) are highly oxygenated, polycyclic aromatic natural products with remarkable biological activity and structural complexity. Evidence from 13C-labelled precursor feeding studies demonstrated that the scaffold was biosynthesized from one unit of l-isoleucine and nine units of malonyl-CoA, which suggested a different starter unit in the biosynthesis. Genetic analysis of the bio...
متن کاملShewanella oneidensis FabB: A β-ketoacyl-ACP Synthase That Works with C16:1-ACP
It is established that Escherichia coli β-ketoacyl-ACP synthase (KAS) I (encoded by EcfabB) is the primary, if not exclusive, factor for elongation of the cis-3-decenoyl-ACP (C10:1-ACP) but not effective with C16:1- or longer-chain-ACPs. To test the extent to which these features apply to KAS I proteins in other species, in this study, we examined the physiological role of FabB in Shewanella on...
متن کاملIdentification of a starter unit acyl-carrier protein transacylase domain in an iterative type I polyketide synthase.
Polyketides are a class of natural products that exhibit a wide range of functional and structural diversity. They include antibiotics, immunosuppressants, antifungals, antihypercholesterolemics, and cytotoxins. Polyketide synthases (PKSs) use chemistry similar to fatty acid synthases (FASs), although building block variation and differing extents of reduction of the growing polyketide chain un...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 2006
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja065247w