![]() The Ppant arm is then acylated with malonyl-CoA by either interaction with MAT or self-malonylation. ![]() The ACP is first activated by the PPTase-catalyzed attachment of the Ppant arm, which holds the polyketide intermediate (see Fig. 1 A for structure of the Ppant arm). All rights reserved.ĪCPs play a central role in type II polyketide biosynthesis. We also share how integrating these advances in type II PKS ACP research with newfound access to key enzyme partners, such as the ketosynthase-chain length factor, sets the stage to unlock new biosynthetic potential.Īcyl carrier protein (ACP) biosynthesis fatty acid polyketide protein crosslinking.Ĭopyright © 2021 The Authors. In this review, we summarize how the application of chemical probes and molecular dynamic simulations has increased our understanding of the structure and function of type II PKS ACPs. However, the inherent flexibility and transience of ACP interactions pose challenges to gaining insight into ACP structure and function. Because ACPs serve as central hubs in type II PKSs, they can also represent roadblocks to successfully engineering synthases capable of manufacturing 'unnatural natural products.' Therefore, understanding ACP conformational dynamics and protein interactions is essential to enable the strategic redesign of type II PKSs. Acyl carrier proteins (ACPs) play a central role in biosynthesis by shuttling malonyl-based building blocks and polyketide intermediates to catalytic partners for chemical transformations. ![]() ![]() Type II polyketide synthases (PKSs) are protein assemblies, encoded by biosynthetic gene clusters in microorganisms, that manufacture structurally complex and pharmacologically relevant molecules. ![]()
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