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Related Concept Videos

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
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Olefin Metathesis Polymerization: Overview01:13

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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Cycloaddition Reactions: Overview01:16

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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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Ziegler–Natta Chain-Growth Polymerization: Overview01:17

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Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Step-Growth Polymerization: Overview01:03

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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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Related Experiment Video

Updated: Mar 24, 2026

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
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Recent Advances in Understanding and Engineering Polyketide Synthesis.

Wenjun Zhang1, Joyce Liu2

  • 1Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA.

F1000Research
|March 11, 2016
PubMed
Summary

Engineering polyketide synthase (PKS) enzymes offers great potential for novel drug discovery. Advances in understanding PKS machinery, including domain activity and building block incorporation, are key to developing new bioactive molecules.

Keywords:
Polyketidespolyketide synthasepolyketide synthesis

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Area of Science:

  • Biochemistry
  • Natural Product Synthesis
  • Synthetic Biology

Background:

  • Polyketides are a crucial class of natural products forming the basis of many pharmaceuticals.
  • Polyketide synthases (PKS) are complex enzymes responsible for polyketide biosynthesis.
  • Engineering PKS offers a promising avenue for discovering new bioactive molecules.

Purpose of the Study:

  • To review recent advances in understanding and engineering polyketide synthases (PKS).
  • To highlight progress in domain activity, unique building block incorporation, and programming rules.
  • To discuss the potential for PKS engineering in drug discovery.

Main Methods:

  • In vitro biochemical analysis of PKS domains.
  • Structural studies of full-length megasynthases.
  • In vivo heterologous expression of engineered PKS systems.

Main Results:

  • Improved understanding of PKS domain function and engineering strategies.
  • Insights into the formation and incorporation of unique polyketide building blocks.
  • Progress in defining the rules and limitations for programming PKS.

Conclusions:

  • Recent advances significantly enhance the understanding of polyketide synthesis.
  • Continued development in analytical and engineering tools will drive future discoveries.
  • PKS engineering holds substantial promise for the production of novel polyketides and pharmaceuticals.