Advances in consolidated bioprocessing using synthetic cellulosomes. (December 2022)

• Record Type: Journal Article
• Authors: Tsai, Shen-Long; Sun, Qing; Chen, Wilfred
• Is Part Of: Current opinion in biotechnology. Volume 78(2022)
• Publication Date: 2022-12
• Subjects: Biotechnology -- Periodicals; 660.6
• DOI: 10.1016/j.copbio.2022.102840
• Languages: English
• ISSNs: 0958-1669

Abstract

Abstract : The primary obstacle impeding the more widespread use of biomass for energy and chemical production is the absence of a low-cost technology for overcoming their recalcitrant nature. It has been shown that the overall cost can be reduced by using a 'consolidated' bioprocessing (CBP) approach, in which enzyme production, biomass hydrolysis, and sugar fermentation can be combined. Cellulosomes are enzyme complexes found in many anaerobic microorganisms that are highly efficient for biomass depolymerization. While initial efforts to display synthetic cellulosomes have been successful, the overall conversion is still low for practical use. This limitation has been partially alleviated by displaying more complex cellulsome structures either via adaptive assembly or by using synthetic consortia. Since synthetic cellulosome nanostructures have also been created using either protein nanoparticles or DNA as a scaffold, there is the potential to tether these nanostructures onto living cells in order to further enhance the overall efficiency. Graphical Abstract: ga1 Highlights: Synthetic cellulosomes can be displayed onto the surface of different microorganisms. Display of more complex cellulosomes is the key for improved biomass hydrolysis. Practical implementation of CBP remains challenging due to low efficiencies.