The transition of Rhodobacter sphaeroides into a microbial cell factory

Area of Science:

• Industrial biotechnology
• Microbial strain engineering
• Synthetic biology

Background:

• Microbial cell factories are crucial for industrial biotechnology, enhancing bio-based product synthesis.
• Strain optimization using the design-build-test-learn (DBTL) cycle has improved traditional microorganisms like E. coli and S. cerevisiae.
• Novel cell factories are emerging, with Rhodobacter sphaeroides showing potential for producing valuable compounds.

Purpose of the Study:

• To evaluate Rhodobacter sphaeroides as a microbial cell factory through the lens of the DBTL concept.
• To discuss current and future prospects for utilizing R. sphaeroides in the bio-based economy.
• To highlight the potential of the DBTL approach for engineering R. sphaeroides and other under-explored microorganisms.

Main Methods:

• Review and reflection on the application of the DBTL framework to Rhodobacter sphaeroides.
• Analysis of R. sphaeroides' capabilities for synthesizing bio-based products like isoprenoids, poly-β-hydroxybutyrate, and hydrogen.
• Discussion of strain engineering strategies within the DBTL pipeline.

Main Results:

• Rhodobacter sphaeroides possesses inherent traits suitable for industrial applications.
• The DBTL approach provides a standardized framework for optimizing R. sphaeroides as a cell factory.
• Successful implementation of DBTL is expected to enhance the production of target compounds.

Conclusions:

• Applying the DBTL pipeline will solidify Rhodobacter sphaeroides' role as a key microbial cell factory.
• The DBTL methodology can be extended to engineer other novel microorganisms for industrial biotechnology.
• This approach accelerates the development of sustainable bio-based production processes.