Minimal genome: Worthwhile or worthless efforts toward being smaller?

Area of Science:

• Synthetic biology
• Microbial biotechnology

Background:

• Microbial cells are efficient hosts for producing valuable products.
• Challenges include innate metabolism, product toxicity, and genetic instability in synthetic pathway implementation.

Purpose of the Study:

• To review artificial reduced genomes and their potential as programmable chassis.
• To discuss prospects and challenges in minimal genome engineering.

Main Methods:

• Review of current artificial reduced genome technologies.
• Analysis of genome reduction strategies and their impact on microbial hosts.

Main Results:

• Genome-reduced strains exhibit comparable growth and enhanced productivity versus ancestral strains.
• Escherichia coli minimal genome estimated at approximately 300 genes under lab conditions.

Conclusions:

• Minimal genomes show promise as programmable chassis for biotechnology.
• Further technological advancements and systematic genomic studies are required for efficient minimal genome construction and application.