Related Experiment Video
Updated: Jun 6, 2026
06:28
Standardized Modular Assembly of Polycistronic Operons with Modular Cloning (MoClo) using the In-Cloning toolkit
Published on: September 2, 2025
A novel docking domain interface model predicting recombination between homoeologous modular biosynthetic gene
Antonio Starcevic1, Janko Diminic, Jurica Zucko
1LB Genetik, University of Kaiserslautern, Postfach 3049, 67653, Kaiserslautern, Germany.
Journal of Industrial Microbiology & Biotechnology
|November 26, 2010
Summary
An in silico model predicts that recombination between polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) gene clusters can create new products. Recombination sites in PKS clusters may limit PKS evolution, while NRPS recombination could yield novel substrate specificities.
Area of Science:
- Biotechnology
- Genomics
- Synthetic Biology
Background:
- Polyketide synthases (PKS) and non-ribosomal peptide synthetases (NRPS) are crucial for producing diverse natural products.
- Understanding recombination in these gene clusters is key to exploring novel compound discovery.
Purpose of the Study:
- To develop and utilize an in silico model for analyzing homoeologous recombination between PKS and NRPS gene clusters.
- To predict the potential for generating new bioactive compounds through recombination.
Main Methods:
- Development of a computational model to simulate recombination events between PKS and NRPS gene clusters.
- Analysis of recombination sites and frequencies in 12 PKS clusters from Streptomyces and related genera.
- In silico recombination analysis of four NRPS clusters from Streptomyces strains.
Main Results:
- Limited recombination sites (approx. 13 per pair) were observed in PKS clusters, suggesting evolutionary constraints.
- Recombination predominantly occurred between ketosynthase (KS) domains in PKS clusters.
- Approximately 30% of simulated PKS recombinants were predicted to yield novel polyketides.
- NRPS cluster recombination showed a high frequency of events in adenylation (A) domains, potentially altering substrate specificity.
Conclusions:
- In silico recombination analysis provides insights into the evolution of PKS and NRPS gene clusters.
- Recombination in PKS clusters may be constrained, while NRPS recombination offers a route to new functionalities.
- Streptomyces species possess genetic features that may favor recombinant production.
Related Concept Videos
02:31Homologous Recombination
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
02:31Homologous Recombination
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
02:53Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
02:32Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...