Gaining access to acetyl-CoA by peroxisomal surface display.

Area of Science:

• Biochemistry
• Synthetic Biology
• Metabolic Engineering

Background:

• Synthetic biology aims to engineer biological systems for producing valuable compounds.
• Efficient production often relies on optimizing precursor availability and enzyme localization.
• Peroxisomes are underutilized organelles for metabolic engineering applications.

Purpose of the Study:

• To develop a novel strategy for enhancing the synthesis of valuable compounds using synthetic biology.
• To investigate the potential of anchoring biosynthetic enzymes to the peroxisomal membrane.
• To leverage the peroxisomal acetyl-CoA pool for polyketide production.

Main Methods:

• Engineered yeast strains with biosynthetic enzymes targeted to the peroxisomal membrane.
• Localization studies to confirm enzyme anchoring.
• Metabolic flux analysis to quantify acetyl-CoA utilization.
• Quantification of polyketide production.

Main Results:

• Successful anchoring of key biosynthetic enzymes to the peroxisomal membrane.
• Demonstrated increased availability of acetyl-CoA within the peroxisome.
• Significant stimulation of the target polyketide synthesis compared to control strains.
• Validation of the peroxisomal membrane as a platform for metabolic engineering.

Conclusions:

• Enzyme anchoring to the peroxisomal membrane is a viable strategy to enhance the production of acetyl-CoA derived compounds.
• This approach provides access to a previously untapped metabolic resource.
• The engineered peroxisomal system offers a promising platform for future synthetic biology applications in chemical production.