Assembly of multi-gene pathways and combinatorial pathway libraries through ePathBrick vectors

Area of Science:

• Synthetic biology
• Metabolic engineering
• Molecular biology

Background:

• Synthetic biology is crucial for designing and optimizing metabolic pathways in organisms.
• Developing efficient gene assembly platforms is key for advancing metabolic engineering.

Purpose of the Study:

• To present a protocol for assembling a seven-gene flavonoid pathway using the ePathBricks platform.
• To demonstrate the combinatorial diversification of a three-gene pathway into 54 variants.

Main Methods:

• Utilizing the ePathBricks gene assembly platform for modular pathway construction.
• Assembling a ~9 kb, seven-gene flavonoid pathway onto a single ePathBrick vector.
• Generating 54 pathway equivalents through combinatorial assembly of a three-gene pathway.

Main Results:

• Successful assembly of a seven-gene flavonoid pathway on a single ePathBrick vector.
• Demonstrated facile diversification of a three-gene pathway into 54 distinct configurations.
• Established a strategy for combinatorial pathway generation and high-throughput screening.

Conclusions:

• The ePathBricks platform facilitates modular assembly and combinatorial generation of metabolic pathway diversity.
• This approach significantly enhances the potential of microbial cell factories for recombinant metabolite production.
• The protocol provides a robust method for optimizing pathways for biofuel and pharmaceutical synthesis.